Journal articles on the topic 'Structural South Australia Olary Region'

Model simulations of residential segregation have shown that even modest levels of social homophily (or wishing to live near residents with similar social characteristics) gives rise to distinct spatial patterns of residential segregation. However, this proposition has been contested where social homophily is modest. This paper contrasts two explanations for urban sociospatial patterns (socioeconomic and demographic spatial patterns) in a region where social homophily is modest-South East Queensland (SEQ). The research question is whether sociospatial patterns are better explained by social homophily or by structural homophily. In other words, are they better explained by residents wishing to live in neighborhoods with similar people (social homophily), or by residents with similar social characteristics finding similar neighborhood physical attributes important, and thus moving to neighborhoods with similar people (structural homophily). SEQ residents were asked how important various reasons were in choosing their neighborhood. The survey data were linked to neighborhood social characteristics from census data with the aid of geographic information systems. Six neighborhood social characteristics in SEQ were investigated. Social homophily explained a small, though statistically significant, level of spatial variation in socioeconomic and ethnic (non-Western) environments. However, it did not explain any variation in the other four neighborhood social characteristics which related to household structure: that is, younger nonnuclear household environments; nuclear family environments; and older nonnuclear household environments, or disadvantaged environments. Moreover, structural homophily explained much more variation than did social homophily in all six neighborhood social characteristics. In regions such as SEQ, spatial patterns can largely be explained by structural homophily. Thus, modest levels of social homophily are not necessarily important in explaining sociospatial patterning.

The evolution of the Dipnoi is displayed in the Early Devonian in south-eastern Australia. The main points at issue are as follows. (a) The development of the tubercles in the two-layered rostral region of the skull. (b) The nerves ophthalmicus profundus V and opthalmicus superficialis VII, and their sensory function. (c) The abundance of fine tubules between these tubules and the dermal plates of the skull roof extending posterior to the pineal region. (d) The massive pterygoids and the restriction of the parasphenoids to a small posterior position. (e) The position of the bucco-hypophysial canal running to a buccal opening near the posterior of the pterygoids. (f) The presence of a rostral region, misnamed the ‘dentary’, in the mandible, with abundant tubercles serving sensory systems. (g) The presence of an anterior furrow in the mandible. Dipnoans form a separate evolutionary lineage that began in the Early Devonian. Diabolepis and associated genera are not Dipnomorphs, but are isolated genera formed by gene regulation in the early Devonian.

The crystal structure of paratooite-(La) has been solved using crystals from the type locality, Paratoo copper mine, near Yunta, Olary Province, South Australia, Australia. The mineral is orthorhombic, Pbam, a = 7.2250(3) Å, b = 12.7626(5) Å, c = 10.0559(4) Å, V = 927.25(6) Å3, and R1 = 0.063 for 1299 unique observed reflections. The crystal structure contains eight symmetrically independent cation sites. The La site, which accommodates rare earth elements (REEs), but also contains Sr and Ca, has a tenfold coordination by seven carbonate groups. The Ca, Na1, and Na2 sites are coordinated by eight, eight, and six O atoms, respectively, forming distorted CaO8 and Na1O8 cubes, and Na2O6 octahedra. The Cu site is occupied solely by copper and possess a distorted octahedral coordination with four short (1.941 Å) and two longer (2.676 Å) apical Cu–O bonds. There are three symmetrically independent carbonate groups (CO3)2− with the average <C–O> bond lengths equal to 1.279, 1.280, and 1.279 Å for the C1, C2, and C3 sites, respectively. The crystal structure of paratooite-(La) can be described as a strongly distorted body-centered lattice formed by metal cations with (CO3)2− groups filling its interstices. According to the chemical and crystal-structure data, the crystal-chemical formula of paratooite-(La) can be described as (La0.74Ca0.11Sr0.07)4CuCa(Na0.75Ca0.15)(Na0.63)(CO3)8 or REE2.96Ca1.59Na1.38CuSr0.28(CO3)8. The idealized formula can be written as (La,Sr,Ca)4CuCa(Na,Ca)2(CO3)8. The structure of paratooite is a 1 × 2 × 2 superstructure of carbocernaite, CaSr(CO3)2. The superstructure arises due to the ordering of the chemically different Cu2+ cations, on one hand, and Na+ and Ca2+ cations, on the other hand. The formation of a superstructure due to the cation ordering in paratooite-(La) compared to carbocernaite results in the multiple increase of structural complexity per unit cell. Therefore, paratooite-(La) versus carbocernaite represents a good example of structural complexity increasing due to the increasing chemical complexity controlled by different electronic properties of mineral-forming chemical elements (transitional versus alkali and alkaline earth metals).

A seismic stratigraphic study of the Early Permian Patchawarra Formation has been undertaken to delineate zones of reservoir sandstone development and to identify stratigraphic hydrocarbon traps in the western Patchawarra Trough region. In this intracratonic basinal setting, the Patchawarra Formation is dominated by paludal and lacustrine sediments with fluvial sandstones. The Patchawarra Formation in the Patchawarra Trough is a prolific, liquids-rich gas producer with discovered-in-place resources approaching 28 x 109 cubic metres (1 TCF).With minimal well control in the study area, seismically defined increments of strata (SIS units) have been mapped areally away from nearby fields. The occurrence of sand-prone facies has been predicted through the development of a palaeogeographic model for each unit.Integration of facies and structural maps has led to the identification of a suite of intraformational and basin edge stratigraphic plays.

This study empirically examined unemployment dynamics in 12 countries in the Asia-Pacific region, namely, China, Hong Kong, Taiwan, South Korea, Japan, Indonesia, Malaysia, the Philippines, Singapore, Thailand, Australia and New Zealand. It used quarterly data on the unemployment rates from the first quarter of 1980 to the first quarter of 2013. This paper employed three different econometric methods, including the recently-developed powerful unit root test with structural break (Lee and Strazicich, 2003, 2004) and the nonlinear unit root test (Enders and Lee, 2012). The findings indicated that the unemployment rates in five countries of the region, namely, China, Taiwan, South Korea, the Philippines and Thailand, had highly dynamic labor markets in which higher-than-normal unemployment rates would revert to the normal level. The other seven Asia-Pacific countries had less dynamic labor markets. The findings of this study have some important policy implications.

Provision of information for the purposes of evaluating and monitoring recreation and tourism land use is a conceptually difficult task for economists and land managers. A range of techniques has been developed since the pioneering work of Clawson and Knetsch in the 1960s to estimate the market value of recreation and tourism in natural areas. These techniques involve a number of conceptual and practical difficulties when used for environmental auditing and evaluation purposes. This article outlines the process of evaluating recreation and tourism on public lands in order to provide information for an environmental audit of the Upper North East region of New South Wales. The range of market and non-market values associated with tourism and recreation on public lands is based on existing studies of the region. The values of commercial production, recreation and tourism on public lands are compared within a structural model (input–output) of the regional economy.

The study of pastoral property management in the arid zone is important, but fraught with problems. In 1980, 30 managers in the North-East Pastoral Region of South Australia were surveyed. This paper identifies the human and social factors found to be related to some of the structural and managerial variables measured in the survey. Several of the more important problems associated with studying pastoral property management are noted, and one possible method of overcoming them described.

Modern approaches to predictive ecosystem mapping (PEM) have not thoroughly explored the use of ‘characteristic’ gradients, which describe vegetation structure (e.g., light detection and ranging (lidar)-derived structural profiles). In this study, we apply a PEM approach by classifying the dominant stand types within the Central Highlands region of south-eastern Australia using both lidar and species distribution models (SDMs). Similarity percentages analysis (SIMPER) was applied to comprehensive floristic surveys to identify five species which best separated stand types. The predicted distributions of these species, modelled using random forests with environmental (i.e., climate, topography) and optical characteristic gradients (Landsat-derived seasonal fractional cover), provided an ecological basis for refining stand type classifications based only on lidar-derived structural profiles. The resulting PEM model represents the first continuous distribution map of stand types across the study region that delineates ecotone stands, which are seral communities comprised of species typical of both rainforest and eucalypt forests. The spatial variability of vegetation structure incorporated into the PEM model suggests that many stand types are not as continuous in cover as represented by current ecological vegetation class distributions that describe the region. Improved PEM models can facilitate sustainable forest management, enhanced forest monitoring, and informed decision making at landscape scales.

Analysis of seismic data from the Bowen and Surat Basins has yielded valuable information on the Permian and Triassic evolution of eastern Australia. When combined with seismic data from the Clarence-Moreton and Maryborough Basins, a new understanding of the post-Triassic evolution of the region can be gained, with widespread implications for other eastern Australian basins.The Early Permian-Middle Triassic Bowen-Sydney Basin is a foreland basin system extending 2000 km in preserved section from Nowra in the south to Collinsville in the north. Permian outcrops as far north as Cape York were probably part of the same system prior to deformation and erosion. The basins in the Bowen-Sydney system were linked by similar structural and stratigraphic patterns controlled by a magmatic arc to the east. The Esk Trough and associated remnant basins east of the Taroom Trough were part of the Middle Triassic foreland sequence. The structural style in the system is dominated by thrusting from the east. An Early Triassic deformation is shown to be the most important, rather than the previously believed Middle Triassic event.The overlying Jurassic-Cretaceous foreland system, which included the Surat, Maryborough and Clarence-Moreton Basins, were once joined behind another magmatic arc, east of the Triassic arc position. A major mid-Cretaceous deformation is documented which fragmented the Jurassic-Cretaceous foreland basin into a number of remnant basins prior to the opening of the Tasman Sea in the Cenomanian. The dominant structural style is again thrusting from the east. Given the severity of the deformation, its effects are expected to be present in continental margin basins around Australia.

The Georgina and South Nicholson basins and the Isa Superbasin of North West Queensland (NWQ), represent frontier basins earmarked for examination of resource potential under the Strategic Resources Exploration Program. Little exploration has occurred for petroleum resources in these basins although a proven petroleum system exists in both the Isa Superbasin and the Georgina Basin with demonstrated flow at sub-commercial rates. To increase knowledge of the petroleum system, define the extent of the South Nicholson Basin and examine basin architecture, Geoscience Australia acquired deep (to 20-s listening time) seismic data across the South Nicholson Basin and northern Isa Superbasin area in 2017. However, this survey focused on broader structural architecture definition across the Proterozoic Isa Superbasin and South Nicholson and McArthur basins. Little is understood of the petroleum system in the southern Isa Superbasin, or even if this structure is part of the Isa Superbasin, where Proterozoic gas is inferred from mineral boreholes and oil stained Cambrian-aged carbonates exist. To increase understanding of this southern region, the Queensland Government acquired a new NWQ SEEBASE® (depth to basement) model in 2018, and will be undertaking a 2D deep seismic survey within the Camooweal region to better understand the structural architecture, sediment thicknesses and seismic characteristic of packages of this southern area. The seismic survey is centred on the Georgina Basin and will tie into the South Nicholson survey – extending knowledge further south across major structures featured in the SEEBASE® model.

The Department of Mines and Energy, South Australia (DME) contracted Michael Williams and Associates Pty Ltd to audit the environmental management of seismic exploration operations in the South Australian Otway Basin. The audit was carried out in early 1992 and covered petroleum exploration operators and DME environmental management systems. An innovative field sampling technique was developed to compare the environmental impact of two different seismic line clearing techniques. Recovery of native vegetation as measured by vegetation structure was also quantified.The audit found DME to have a dynamic and integrated environmental management system while company systems varied in standard. Wide consultation assisted the audit process.As a result of clearing for agriculture, native vegetation covers only six per cent of the Otway Basin. With the strict limitations to broad-scale vegetation clearance since the mid-1980s and the cessation since 1991, the greatest environmental impact of seismic exploration is the clearance of native vegetation for access by seismic vehicles. Native vegetation structure and associated abiotic variables on seismic lines and adjacent control sites, were subject to a classification and ordination analysis which compared the impact of seismic lines constructed by bulldozer or Hydro-ax (industrial slasher). Post-seismic recovery rates of three different vegetation associations were also determined. This analytical technique permits the effects of seismic line clearance to be compared with the natural variability of specific vegetation associations within a region. In interpreting the results however, there is a confounding effect of line type and year as most of the more recent seismic lines were constructed using a Hydro-ax. Results indicate that Hydro-ax clearing affects vegetation structure less than bulldozing. Most Hydro-ax sites recovered within a few years whereas some sites, bulldozed as early as 1971, particularly tussock grasslands, have not yet recovered.This study provides a significant break-through in the debate about the persistence of seismic impacts on native vegetation. As a rapid preliminary assessment, sampling vegetation structure rather than floristics, provides a cost-effective audit and monitoring technique which can be used by non-specialists in a range of petroleum exploration environments. Any significant structural differences may require more detailed analysis to determine if floristic composition also differed.

Monitoring forest structural properties is critical for a range of applications because structure is key to understanding and quantifying forest biophysical functioning, including stand dynamics, evapotranspiration, habitat, and recovery from disturbances. Monitoring of forest structural properties at desirable frequencies and cost globally is enabled by space-borne LiDAR missions such as the global ecosystem dynamics investigation (GEDI) mission. This study assessed the accuracy of GEDI estimates for canopy height, total plant area index (PAI), and vertical profile of plant area volume density (PAVD) and elevation over a gradient of canopy height and terrain slope, compared to estimates derived from airborne laser scanning (ALS) across two forest age-classes in the Central Highlands region of south-eastern Australia. ALS was used as a reference dataset for validation of GEDI (Version 2) dataset. Canopy height and total PAI analyses were carried out at the landscape level to understand the influence of beam-type, height of the canopy, and terrain slope. An assessment of GEDI’s terrain elevation accuracy was also carried out at the landscape level. The PAVD profile evaluation was carried out using footprints grouped into two forest age-classes, based on the areas of mountain ash (Eucalyptus regnans) forest burnt in the Central Highlands during the 1939 and 2009 wildfires. The results indicate that although GEDI is found to significantly under-estimate the total PAI and slightly over-estimate the canopy height, the GEDI estimates of canopy height and the vertical PAVD profile (above 25 m) show a good level of accuracy. Both beam-types had comparable accuracies, with increasing slope having a slightly detrimental effect on accuracy. The elevation accuracy of GEDI found the RMSE to be 10.58 m and bias to be 1.28 m, with an R2 of 1.00. The results showed GEDI is suitable for canopy densities and height in complex forests of south-eastern Australia.

A survey of 34 farms covering the major soil types used for growing vegetables within the greater Sydney metropolitan region (New South Wales, Australia) was undertaken to determine the effect of vegetable production on soil chemical and physical properties. Comparison of farmed ‘vegetable’ v. unfarmed ‘reference’ sites revealed that the soils used for vegetable production had extremely high concentrations of total P, Colwell-P, and CaCl2-extractable P (mean 1205, 224, and 4.3 mg/kg in the 0–0.30 m layer, respectively). In the 0–0.30 m soil layer, mean bicarbonate-extractable P (Colwell-P) concentrations have increased to up to 44 times that of the unfarmed reference soils and exceed that required for adequate vegetable nutrition. Concentrations of P in the soil solution (CaCl2-P) were up to 230 times that of the unfarmed reference soils. Moreover, the vegetable soils had low total soil carbon concentrations (mean 14.1 g/kg in the 0–0.10 m layer, only 57% of the mean concentration of the reference soils). These soils exhibited extremely low structural stability, which is likely to reduce soil infiltration rates and increase the potential for runoff. Marked changes in soil pH, EC, and exchangeable cations (Ca, Mg, and K) were also observed as a consequence of vegetable production. All of these changes are a consequence of current management practices used in vegetable production, which include application of high rates of inorganic fertilisers and poultry manure, as well as excessive cultivation. Excessive accumulation of P, to at least 0.30 m depth, coupled with a loss of soil structural stability, is of particular environmental concern. Options such as adopting minimum tillage, in conjunction with using alternative inputs such as low P composts and cover crops, as a means of improving soil structure and reducing the extent of P accumulation in these soils require further investigation.

Exploring for the Future (EFTF) is a four-year, AU$100.5 million initiative from the Australian Government conducted by Geoscience Australia in partnership with state and Northern Territory government agencies, CSIRO and universities to provide new geoscientific datasets for frontier regions. As part of this program, Geoscience Australia acquired two new seismic surveys that collectively extend across the South Nicholson Basin (L120 South Nicholson seismic line) and into the Beetaloo Sub-basin of the McArthur Basin (L212 Barkly seismic line). Interpretation of the seismic has resulted in the discovery of new basins that both contain a significant section of presumed Proterozoic strata. Integration of the seismic results with petroleum systems geochemistry, structural analyses, geochronology, rock properties and a petroleum systems model has expanded the knowledge of the region for energy exploration. These datasets are available through Geoscience Australia’s newly developed Data Discovery Portal: an online platform delivering digital geoscientific information, including seismic locations and cross-section images, and field site and well based sample data. Specifically for the EFTF energy project, a petroleum systems framework with supporting organic geochemical data has been built to access source rock, crude oil and natural gas datasets via interactive maps, graphs and analytical tools that enable the user to gain a better and faster understanding of a basin’s petroleum prospectivity.

Many species of reptiles are sedentary and depend on ground-layer habitats, suggesting that they may be particularly vulnerable to landscape changes that result in isolation or degradation of native vegetation. We investigated patterns of reptile distribution and abundance in remnant woodland across the Victorian Riverina, south-eastern Australia, a bioregion highly modified (>90%) by clearing for agriculture. Reptiles were intensively surveyed by pitfall trapping and censuses at 60 sites, stratified to sample small (<30 ha) and large (>30 ha) remnants, and linear strips of roadside and streamside vegetation, across the regional environmental gradient. The recorded assemblage of 21 species was characterised by low abundance and patchy distribution of species. Reptiles were not recorded by either survey technique at 22% of sites and at a further 10% only a single individual was detected. More than half (53%) of all records were of two widespread, generalist skink species. Multivariate models showed that the distribution of reptiles is influenced by factors operating at several levels. The environmental gradient exerts a strong influence, with increasing species richness and numbers of individuals from east (moister, higher elevation) to west (drier, lower elevation). Differences existed between types of remnants, with roadside vegetation standing out as important; this probably reflects greater structural heterogeneity of ground and shrub strata than in remnants subject to grazing by stock. Although comparative historical data are lacking, we argue that there has been a region-wide decline in the status of reptiles in the Victorian Riverina involving: (1) overall population decline commensurate with loss of >90% of native vegetation; (2) disproportionate decline of grassy dry woodlands and their fauna (cf. floodplains); and (3) changes to populations and assemblages in surviving remnants due to effects of land-use on reptile habitats. Many species now occur as disjunct populations, vulnerable to changing land-use. The status of reptiles in rural Australia warrants greater attention than has been given to date. Effective conservation of this component of the biota requires better understanding of the population dynamics, habitat use and dispersal capacity of species; and a commitment to landscape restoration coupled with effective ecological monitoring.

The Otway Basin is one of the best known and most actively explored of a series of Mesozoic basins formed along the southern coastline of Australia by the rifting of the Antarctic and Australian plates during the Cretaceous. The basin offers a diversity of play types, with at least three major sedimentary sequences forming conventional targets for petroleum exploration in the onshore basin. The Penola Trough in South Australia has enjoyed over 20 years of commercial hydrocarbon production from the sandstones of the Early Cretaceous Otway Group comprising the Crayfish Subgroup (Pretty Hill Formation and Katnook sandstones) and Eumeralla Formation (Windermere Sandstone Member). Lithostratigraphic characterisation and nomenclature for these sequences are poorly constrained, challenging correlation across the border into the potentially petroleum prospective Victorian Penola Trough region. The Geological Survey of Victoria (GSV), as part of the Victorian Gas Program, commissioned Chemostrat Australia to undertake an 11-well chemostratigraphic study of the Victorian Otway Basin. The South Australia Department for Energy and Mining, GSV and Chemostrat Australia are working collaboratively to develop a consistent, basin-wide schema for the stratigraphic nomenclature of the Otway Basin within a chemostratigraphic framework. Variability in the mineralogy and hence inorganic geochemistry of sediments reflects changes in provenance, lithic composition, facies changes, weathering and diagenesis. This geochemical variation enables the differentiation of apparently uniform sedimentary successions into unique sequences and packages, aiding in the resolution of complex structural relationships and facies changes. In this paper, we present the preliminary results of detailed geochemical analyses and interpretation of 15 wells from across the Otway Basin and the potential impacts on hydrocarbon prospectivity.

The south-east Queensland region of subtropical Australia supports a high diversity of landbird species, many of which are migrants which visit lowland areas during winter. However, lowland habitats have been impacted by clearing and fragmentation of native forest types within the past 170 years. This paper considers the implications of loss and fragmentation of lowland eucalypt forests for birds in winter, by comparing the proportionate density of twelve selected species across 49 different cases representing a variety of structural habitat differences. There was little fragmentation effect on forest-dependant winter immigrant species down to about 10 ha. The smallest remnants had reduced proportionate abundances of forest-dependent species together with elevated abundances of two other species: Noisy Miner and Australian Magpie. Similar shifts in species composition occurred in association with a variety of types of change in native eucalypt forest, all involving alteration to physical structure incorporating reduction of foliage cover (at forest edges, in areas without understorey, in regenerating forest, on slopes and ridges, and after fires). We consider the ecological processes that might underlie these patterns, and suggest that: (1) habitat selection, possibly mediated and/or reinforced by interference competition from Noisy Miners, is a key process in the study system in winter; (2) habitat loss, rather than fragmentation, is likely to be the main cause of regional declines in forest-dependent winter migrants; and (3) the management of habitat for winter migrant birds within lowland eucalypt forests of this region should focus on maintaining and improving: (a) the overall percentage of lowland area covered by native forest, and (b) factors associated with the structural integrity (canopy and understorey cover, fire frequency, retention of complete microtopographic gradients) of remnant forest areas irrespective of their size, at least down to about 10 ha.

The Onshore Energy Security Program—funded by the Australian Government and conducted by Geoscience Australia—has acquired deep seismic reflection data in conjunction with state and territory geological surveys, across several frontier sedimentary basins to stimulate petroleum exploration in onshore Australia. Here, we present data from two seismic lines collected in SA and NT. Seismic line 08GA-OM1 crossed the Arckaringa and Officer basins in SA and the southern-most Amadeus Basin in NT. Seismic line 09GA-GA1 crossed the northeastern part of the Amadeus Basin and the complete width of the southern Georgina Basin in NT. Structural and sequence stratigraphic interpretations of the seismic lines will be presented here, followed by an assessment of the petroleum potential of the basins. Seismic line 08GA-OM1 also crosses the Neoproterozoic to Devonian eastern Officer Basin. The basin is structurally complex in this area, being dominated by south-directed thrust faults and fault-related folds—providing potential for underthrust petroleum plays. The northern margin of the basin is overthrust to the south by the Mesoproterozoic Musgrave Province. To the north, the Moorilyanna Trough of the Officer Basin is a major depocentre of up to 7,000 m deep. Both seismic lines cross parts of the eastern Amadeus Basin. Seismic line 08GA-OM1 shows that the southern margin of the basin is overthrust to the north by the Musgrave Province with the main movement during the Petermann Orogeny. In the northeast, seismic line 09GA-GA1 crosses two parts of the basin separated by the Paleoproteroozic to Mesoproterozoic Casey Inlier (part of the Arunta Region). The northern margin of the basin is imaged seismically as a southward-verging, thinned-skinned thrust belt, showing considerable structural thickening of the stratigraphic succession. Seismic line 09GA-GA1 was positioned to cross that part of the southern Georgina Basin that was considered previously to be in the oil window. Here, the basin has a complex southern margin, with Neoproterozoic stratigraphy being thrust interleaved with basement rocks of the Arunta Region. The main part of the basin, containing a Neoproterozoic to Devonian succession, is asymmetric, thinning to the north where it overlies the Paleoproterozoic Davenport Province. The well, Phillip–2, drilled adjacent to the seismic line, intersected basement at a depth of 1,489 m, and has been used to map the stratigraphic sequences across the basin.

Natural fractures can be identified in wellbores using electric resistivity image logs; however, the challenge of predicting fracture orientations, densities, and probable contribution to subsurface fluid flow away from the wellbore remains. Regional interpretations of fracture sets are generally confined to areas featuring an extensive reservoir analog outcrop. We have made use of extensive data sets available in Western Australia’s Northern Carnarvon Basin to map subsurface natural fractures, contributing to a regional understanding of fracture sets that can be applied to broader parts of the basin. The Northern Carnarvon Basin is composed of distinct structural domains that have experienced differing tectonic histories. Interpretation of regional fractures was achieved through an integrated approach, incorporating electric resistivity image logs from 52 Carnarvon Basin wells and seismic attribute analysis of two 3D seismic data sets: Bonaventure_3D ([Formula: see text]) and HC_93_3D ([Formula: see text]). Integration of these two data sets allows for a regionally extensive identification of natural fractures away from well control. Fractures of differing age and character are identified within the basin: Outboard areas are dominated by fractures likely to be open to fluid flow that are parallel to subparallel to the approximately east–west present-day maximum horizontal stress, providing possible flow conduits between potential damage zones identified alongside the north–northeast/south–southwest-striking faults that constitute the major structural trend of the basin, and inboard areas dominated by northeast–southwest to north–northeast/south–southeast fractures formed in fault damage-zones alongside normal, and inverted-normal, faults at those orientations. Finally, fractures observed in wells from the Rankin Platform and Dampier Subbasin occur at neither of these orientations; rather, they closely parallel the strikes of local faults. Additionally, variation is seen in fracture strikes due to isotropic present-day stress magnitudes. This methodology extends fracture interpretations from the wellbore and throughout the region of interest, constituting a regional understanding of fracture sets that can be applied to broader parts of the basin.

The isolated forested ecosystems of south-western Australia are experiencing warming, drying, and increasing wildfires. How are these changes impacting on biodiversity in the region? A wildfire burnt over 98 000 ha in the high-rainfall (>1100 mm) zone between Northcliffe and Walpole in January–February 2015. A lack of permanent plots limited assessment of impact. However, plot establishment in September 2016 enabled benchmarking of local biodiversity responses in areas burnt at high intensity 18 months previously. We assessed floristic composition, fire response traits and vegetation structure in 48 plots (each 78.5 m2) replicated equally across four neighbouring vegetation types (tall open-forest, open-forest, low open-forest and shrubland). We recorded 165 vascular plant species across these four environments, which differed in environmental profiles, species density, fire trait syndromes and fire-determined structural responses. Shrubland (77 species) was most dominated by geophytes and rhizomatous taxa; and open-forest (82 species) and tall open-forest (41 species) by soil-stored seeders. Epicormic resprouters were dominant in all three forest types. Considerable impact was observed in tree structure, suggesting that recovery in height and biomass in forested vegetation will take longer than fire-return times under trends of increasing frequency and intensity of wildfire in the region. In light of these findings we advocate fire management regimes that reduce the impact of on-going climate trends. These are mosaics that take advantage of moisture differentials, sharp ecotones and different suites of fire response syndromes, and target high-value assets for protection.

In the grain growing region of Queensland and New South Wales, Australia, crop production occurs predominantly under semiarid, rainfed conditions. Vertosols dominate the soils used and many are prone to structural problems. In this region, providing that crop nutrition is adequate, optimising yield is largely dependent on maximising the infiltration, storage and plant use of soil water. Soil constraints such as sodicity, salinity, acidity, subsoil compaction and surface sealing can limit these processes, leading to high yield losses. This review examines management options to treat these constraints, focusing on management where multiple constraints exist, and where these occur in the subsoil. The main strategies reviewed include (a) use of gypsum to treat sodicity and lime to treat acidity, which can lead to yield increases of &gt;100% in some circumstances, (b) cultivation or deep ripping to break up compacted sodic layers and surface seals, (c) incorporating soil organic matter to improve conditions for plant growth and (d) selecting species, cultivars and management practices most appropriate for constrained sites. Future research must be directed to improving the profitability of ameliorant use for sodicity by increasing our understanding of how to identify soils responsive to ameliorants, and which combination of ameliorants will be cost effective when sodicity occurs in combination with other constraints. In addition, research needs to target ways to economically apply ameliorants in subsoil environments, and better identify which crop species or cultivars are productive on constrained sites, particularly those with multiple constraints.

Since the offshore discoveries of economic gas accumulations at Geographe and Thylacine, the Otway Basin has become the focus of an exploration resurgence. Its proximity to major markets ensures the discoveries will be commercially valuable. The latest successes in the basin are mainly due to modern 3D-seismic techniques. While the upper sedimentary succession has been imaged at high resolution, details of the deeper successions, however, remained obscure.An integrated study of magnetic, gravimetric, bathymetric and deep seismic data-sets has outlined the way that pre-existing basement fractures controlled much of the later basin-evolution, the structural style and the distribution of hydrocarbon bearing structures.The Otway Basin formed by the profound interaction between crustal fabric in the Proterozoic and Palaeozoic basement and the extensional stresses during Gondwana break-up. Overall, three different rift systems can be distinguished:Early ENE-trending Jurassic to Early Cretaceous rifts are an extension of the E-W rift system in Western Australia and South Australia, Early WNW Late Jurassic to Early Cretaceous rifts are connected to the ENE set and include the western Otway Basin east of the Robe Trough and the Torquay Sub-basin, and Early Cretaceous NNW transtensional rifts in the southern part of the Shipwreck Trough. These control the La Bella, Thylacine and Geographe discoveries, all of which overlie the Neoproterozoic to Cambrian Selwyn Block.Within these rift systems, the Jurassic to Cretaceous rifts along the continental shelf break coincide with the northern edge of the Voluta Trough, whilst the mid-slope rifts are part of the deep Voluta Trough and were possibly generated during the Late Cretaceous.Although the potential field data do not directly delineate hydrocarbon accumulations, when integrated with other data they provide powerful tools for exploration. For instance, it is possible to map the distribution of Paleocene channels that overlie the basement and represent likely reservoir facies, while data integration with palaeoenvironmental interpretations can highlight areas in which source rock facies developed.Regionally, the way the rifts have formed with respect to the basement fabric suggests that the dominant extension direction in the basin was N to NNW. Integrating the interpretation with regional studies in the western Tasmanian region supports the proposition that the western part of the south Tasman Rise was once the outer part of the upper plate adjacent to the deepwater parts of the Otway Basin SW of Cape Otway.

Bluetongue virus (BTV) is the prototype species of the genus Orbivirus within the family Reoviridae. There are 24 (possibly 25) distinct serotypes of BTV, eleven of which have entered, or have been identified in Europe and the Mediterranean region since 1998 (types 1, 2, 4, 6, 8, 9, 11, 15, 16, 24 and 25). The first BTV to arrive in Greece during 1998 was serotype 9 (iso­late GRE1998/01), followed by BTV-16 (GRE1999/13) during 1999. BTV-9 spread to mainland Greece, South-Eastern Bulgaria and European Turkey during 1999, to Italy during 2000, then to Serbia, Montenegro, Kosovo, Macedonia, Bulgaria, Croatia, mainland Italy and Sicily in 2001. In 2002, BTV-9 was again identified in Bosnia, Bulgaria, Montenegro, Yugoslavia and Albania, and was identified in Libya for the first time in 2008. The whole genome was sequenced for representative field and vaccine strains of BTV-9 and 16 from the Mediterranean region, identifying the levels of genetic heterogeneity in each genome segment. The early European isolates of BTV-9 (1998 onwards) were identified as ‘eastern’ strains related to those from India, Indonesia and Australia. BTV-16 isolates are also eastern strains that are most closely related to strains from Turkey and the South African reference strain of type 16 (originally from Pakistan). Analyses of the more conserved genome segments coding for structural and non-structural proteins of BTV-9 (from Bosnia, Bulgaria, Greece and Turkey) and BTV-16 (from Greece and Turkey) show that the Eastern European isolates of these two serotypes have the remaining eight genome segments (1, 3, 4, 5, 7, 8, 9 and 10) with more than 99% similarity, in each case belonging to the same eastern lineage. These data show that the BTV-9 and 16 isolates that were circulating in the Mediterranean region are reassortants, with the majority of their genome seg­ments derived from a single parental lineage. However, the BTV-9 isolate from Libya (LIB2008/08) is more closely related to the western BTV-9 reference strain from South Africa than to the earlier BTV-9 isolates from Eastern Europe. Analysis of the more conserved segments of LIB2008/08 showed only 79.8–80.2% similarity with the eastern European BTV-9 isolates from the Eastern Mediterranean region, but 89–93.5% similarity with the BTV-9 reference and vaccine strains from South Africa. BTV-9 from Libya belongs to a distinct western lineage of viruses and represents both a new introduction to the Mediterranean region and a new threat to Europe.

The clearance of woodlands and the simultaneous creation of alien environments have been identified as the primary reasons for the decline of many woodland birds in southeastern Australia. This study measured how the size of woodland remnants and habitat structural complexity affected bird composition and distribution in the northern Australian Capital Territory and bordering areas of New South Wales. Within this region only 8% of the original woodlands remain, embedded as patches in a matrix of pasture and suburbia. Woodland birds were surveyed in 72 woodland remnants of different size and vegetation structural complexity. Avifaunal species richness was found to increase with remnant area and habitat complexity (p < 0.01). Of the 31 resident woodland bird species detected, 22 were significantly affected by woodland patch size reduction and 20 species were significantly affected by habitat complexity loss (p < 0.05). Of the species affected, 19 were affected by both reductions in patch size and vegetation complexity. Seven species (Weebill, Brown Thornbill, Buff-rumped Thornbill, Spotted Pardalote, Grey Shrike-thrush, Scarlet Robin and White-winged Chough) not previously identified as threatened by habitat fragmentation occurred significantly less often in small remnants with low habitat complexity. Assessment of avifaunal guilds based on body size and foraging behaviour showed that all large species (n = 4) and 85% (n = 17) of insectivorous species that foraged above the ground were statistically affected by patch size and/or loss of habitat complexity. The occurrence of three species (50%) of granivores was also significantly affected (p < 0.05) by patch size and/or habitat complexity reduction. These results show that the distribution of many bird species, including some considered "common" and "widespread", is affected by patch size and habitat complexity. There are few, large complex woodland remnants within the study area, which continue to reduce in size and complexity. It is therefore predicted that the decline of woodland bird species will continue unless appropriate habitat conservation strategies are applied.

Abstract. Bushfires are an intrinsic part of the New South Wales’ (NSW) environment in Australia, especially in the Blue Mountains region (11400km2), that is dominated by fire prone vegetation that includes heathland. Many of the Australian native plants in this region are fire-prone and combustible, and many species even require fire to regenerate. The classification of the lateral and vertical distribution of living vegetation is necessary to manage the complexity of bushfires. Currently, interpretation of aerial and satellite images is the prevalent method for the classification of vegetation in NSW. The result does not represent important vegetation structural attributes, such as vegetation height, subcanopy height, and destiny. This paper presents an automated method for the three-dimensional modelling of heathland and important heathland parameters, such as heath shrub height and continuity, and sparse tree and mallee height and density in support of bushfire behaviour modelling. For this study airborne lidar point clouds with a density of 120 points per square meter are used. For the processing and modelling the study is divided into a point cloud processing phase and a voxel-based modelling phase. The point cloud processing phase consists of the normalisation of the height and extraction of the above ground vegetation, while the voxel phase consists of seeded region growing for segmentation, and K-means clustering for the classification of the vegetation into three different canopy layers: a) heath shrubs, b) sparse trees and mallee, c) tall trees.

Mesozoic extension along Australia's southern margin and the evolution and architecture of the Otway Basin were probably controlled by three factors: 1) changes in global plate movements driven by mantle processes; 2) the structural grain of Palaeozoic basement; and, 3) changes in subduction along Gondwana's Pacific margin. Major plate realignments controlled the Jurassic onset of rifting, the mid-Cretaceous break-up and the Eocene onset of rapid spreading in the Southern Ocean.The initial southern margin rift site was influenced by the northern limit of Pacific margin (extensional) Jurassic dolerites and the rifting may have terminated dolerite emplacement. Changed conditions of Pacific margin subduction (e.g. ridge subduction) in the Aptian may have placed the Australia-Antarctic plates into minor compression, abating Neocomian southern margin rifting. It also produced vast amounts of volcanolithic sediment from the Pacific margin arc that was funnelled down the rift graben, causing additional regional subsidence due to loading. Albian orogenic collapse of the Pacific margin, related to collision with the Phoenix Plate, influenced mid-Cretaceous breakup propagating south of Tasmania and into the Tasman Sea.Major offsets of the spreading axis during breakup, at the Tasman and Spencer Fracture zones, were most likely controlled by the location of Palaeozoic terrane boundaries. The Tasman Fracture System was reactivated during break-up, with considerable uplift and denudation of the Bass failed rift to the east, which controlled Otway Basin facies distribution. Palaeozoic structures also had a significant effect in determining the half graben orientations within a general N-S extensional regime during early Cretaceous rifting. The late Cretaceous second stage of rifting, seaward of the Tartwaup, Timboon and Sorell fault zones, left a stable failed rift margin to the north, but the attenuated lithosphere of the Otway-Sorell microplate to the south records repeated extension that led to continental separation and may be part of an Antarctic upper plate.

Background A fatal case of Japanese encephalitis (JE) occurred in a resident of the Tiwi Islands, in the Northern Territory of Australia in February 2021, preceding the large JE outbreak in south-eastern Australia in 2022. This study reports the detection, whole genome sequencing and analysis of the virus responsible (designated JEV/Australia/NT_Tiwi Islands/2021). Methods Reverse transcription quantitative PCR (RT-qPCR) testing was performed on post-mortem brain specimens using a range of JE virus (JEV)-specific assays. Virus isolation from brain specimens was attempted by inoculation of mosquito and mammalian cells or embryonated chicken eggs. Whole genome sequencing was undertaken using a combination of Illumina next generation sequencing methodologies, including a tiling amplicon approach. Phylogenetic and selection analyses were performed using alignments of the Tiwi Islands JEV genome and envelope (E) protein gene sequences and publicly available JEV sequences. Results Virus isolation was unsuccessful and JEV RNA was detected only by RT-qPCR assays capable of detecting all JEV genotypes. Phylogenetic analysis revealed that the Tiwi Islands strain is a divergent member of genotype IV (GIV) and is closely related to the 2022 Australian outbreak virus (99.8% nucleotide identity). The Australian strains share highest levels of nucleotide identity with Indonesian viruses from 2017 and 2019 (96.7–96.8%). The most recent common ancestor of this Australian-Indonesian clade was estimated to have emerged in 2007 (95% HPD range: 1998–2014). Positive selection was detected using two methods (MEME and FEL) at several sites in the E and non-structural protein genes, including a single site in the E protein (S194N) unique to the Australian GIV strains. Conclusion This case represents the first detection of GIV JEV acquired in Australia, and only the second confirmed fatal human infection with a GIV JEV strain. The close phylogenetic relationship between the Tiwi Islands strain and recent Indonesian viruses is indicative of the origin of this novel GIV lineage, which we estimate has circulated in the region for several years prior to the Tiwi Islands case.

AbstractEcandrewsite, the zinc analogue of ilmenite, is a new mineral which was first described from the Broken Hill lode in 1970 and discovered subsequently in ores from Little Broken Hill (New South Wales) and the San Valentin Mine, Spain. The name ‘ecandrewsite’ was used in a partial description of the mineral in ‘Minerals of Broken Hill’ (1982), thereby establishing the Little Broken Hill locality, specifically the Melbourne Rockwell Mine, as the type locality. Microprobe analysis of ecandrewsite from the type locality gave ZnO 30.42 (wt.%), FeO (total Fe) 11.37, MnO 7.64, TiO2 50.12, total 99.6%, yielding an empirical formula of (Zn0.59Fe0.24Mn0.17)1.00Ti0.99O3 based on 3 oxygen atoms. All compositions from Little Broken Hill and the San Valentin Mine are ferroan manganoan ecandrewsite. The strongest lines in the X-ray powder diffraction data are (d in Å, (hkil), I/Io):2.746, (104), 100; 2.545, (110), 80; 1.867, (024), 40; 3.734, (012), 30; 1.470, (3030), 30; 1.723, (116), 25. Ecandrewsite is hexagonal, space group RR3¯ assigned from a structural study, with a = 5.090(1), c = 14.036(2)Å, V = 314.6(3)Å3, Z = 6, D(calc.) = 4.99. The mineral is opaque, dark brown to black with a similar streak, and a submetallic lustre. In plane polarized light the reflection colour is greyish white with a pinkish tinge. Reflection pleochroism is weak, but anisotropism is strong with colours from greenish grey to dark brownish grey. Reflectance data in air between 470 and 650 nm are given. At the type locality, ecandrewsite forms disseminated tabular euhedral grains up to 250 × 50 µm, in quartz-rich metasediments. Associated minerals include almandine-spessartine, ferroan gahnite and rutile. The name is for E. C. Andrews, pioneering geologist in the Broken Hill region of New South Wales. Type material consisting of one grain is preserved in the Museum of Victoria (M35700). The mineral and name were approved by the IMA Commission on New Minerals and Mineral Names in 1979.

Shelterbelts are common features of farm landscapes that provide shelter for livestock and crops and timber but may also benefit wildlife. The importance of shelterbelt plant diversity for birds was investigated by a survey of 62 sites in the Central West region of New South Wales, Australia. An area search technique was used to assess bird occurrence. An all subsets and exponential regression analysis approach explored the relationships between woody plant diversity and avifauna diversity (using Hill’s diversity index), whilst seasonal variations were analysed using restricted maximum likelihood. Sixty-six bird species, including many that are woodland-dependent, representing eight foraging guilds, were observed in the shelterbelts. More species of birds occurred and at higher density in more floristically diverse shelterbelts. Other factors found to influence avifaunal use of shelterbelts were woody plant density, shelterbelt width, structural complexity, tree height, crown cover index and elevation. Seasonal analysis confirmed the importance of these independent variables but also revealed the significance of shelterbelt’s proximity to water during summer for birds using this habitat. This study shows that floristic diversity, amongst other factors, is a significant predictor of avifauna diversity in shelterbelts and suggests that shelterbelts may be designed to optimize their wildlife habitat and biodiversity conservation values.

Detailed interpretation of reflection seismic and well data from the northern Strzelecki Terrace constrain the effect of Southern Margin and Tasman Sea rifting on the evolution of the Gippsland Basin. A new model is proposed which divides the basin into two structurally distinct provinces (East and West Gippsland Basin), separated by a broad zone of accommodation which is referred to in this paper as the 'Kingfish/Tuna Transition Zone'. This zone is a distinct region across which structural styles change within the basin due to the interaction of extensional forces resulting from both Southern Margin and Tasman Sea rifting. No evidence has been found, however, for the existence of transfer zones within the northern margin of Gippsland Basin as previously suggested by other authors.The Gippsland Basin is observed to have a composite history; a younger 'Tasman Rift' Basin (a Tasman Sea aulacogen) overlying a regionally more extensive 'Strzelecki Basin' (the result of rifting along Australia's Southern Margin). Both basins have formed as half graben with opposing asymmetry. Re-evaluation of the Cretaceous palynology in conjunction with reflection seismic data from selected wells have enabled division of the Cretaceous section of the northern Strzelecki Terrace into three tectonically distinct sedimentary units: the Lower Strzelecki, Upper Strzelecki and Golden Beach Megasequences. The Lower Strzelecki Megasequence exhibits considerable thickening towards a south-bounding master fault, and is inferred to have been deposited during a phase of active rifting. It is separated from the overlying Upper Strzelecki Megasequence by a pronounced late Aptian age angular unconformity. The Upper Strzelecki Megasequence is a thick sedimentary unit which shows less syn-sedimentary faulting and is inferred to be deposited during a period of tectonic quiescence, possibly during a sag phase following active rifting. The Golden Beach Megasequence shows renewal of rifting with growth towards a north bounding fault system and is differentiated from the underlying Strzelecki Megasequences by a distinct change in seismic character across a subtle early Campanian age angular unconformity.

Purpose This paper aims to review the status of development of building information modelling (BIM), its trends and themes across the six continents of the world. Design/methodology/approach A total of 914 journal articles sought from the search engine of Web of Science (WOS) based on the country/region option of the WOS to group them into continents. A best-fit approach was then applied in selecting the suitable software programmes for the scientometric analysis and comparisons and deductions were made. Findings The findings revealed that there are differences in the development of BIM across the six continents of the world. South America and Africa are lagging in the BIM research and Australia and Asia are growing, whilst Europe and North America are ahead. In addition, there exist differences in the research themes and trends in these continents as against the single view presented in extant studies. Originality/value This study introduced a new approach to carry out a comparative and taxonomic review and has provided both academic researchers and industrial practitioners with a clear status of development of BIM research and the trend across the six continents of the world.

In temperate Australia, wildfires are predicted to be more frequent and severe under climate change. This could lead to marked changes in tree mortality and regeneration in the region’s predominant eucalypt forests, which have been burned repeatedly by extensive wildfires in the period 2003–14. Recent studies have applied alternative stable state models to select ‘fire sensitive’ forest types, but comparable models have not been rigorously examined in relation to the more extensive ‘fire tolerant’ forests in the region. We review the effects of increasing wildfire frequency on tree mortality and regeneration in temperate forests of Victoria, south-eastern Australia, based on the functional traits of the dominant eucalypts: those that are typically killed by wildfire to regenerate from seed (‘obligate seeders’) and those that mostly survive to resprout (‘resprouters’). In Victoria, over 4.3 million ha of eucalypt forest has been burned by wildfire in the last decade (2003–14), roughly equivalent to the cumulative area burned in the previous 50 years (1952–2002; 4.4 million ha). This increased wildfire activity has occurred regardless of several advancements in fire management, and has resulted in over 350 000 ha of eucalypt forest being burned twice or more by wildfire at short (≤11 year) intervals. Historical and recent evidence indicates that recurrent wildfires threaten the persistence of the ‘fire sensitive’ obligate seeder eucalypt forests, which can facilitate a shift to non-forest states if successive fires occur within the trees’ primary juvenile period (1–20 years). Our review also highlights potential for structural and state changes in the ‘fire tolerant’ resprouter forests, particularly if recurrent severe wildfires kill seedlings and increase tree mortality. We present conceptual models of state changes in temperate eucalypt forests with increasing wildfire frequency, and highlight knowledge gaps relating to the development and persistence of alternative states driven by changes in fire regimes.

Context. TANAMI is a multiwavelength program monitoring active galactic nuclei (AGN) south of − 30° declination including high-resolution very long baseline interferometry (VLBI) imaging, radio, optical/UV, X-ray, and γ-ray studies. We have previously published first-epoch8.4 GHz VLBI images of the parsec-scale structure of the initial sample. In this paper, we present images of 39 additional sources. The full sample comprises most of the radio- and γ-ray brightest AGN in the southern quarter of the sky, overlapping with the region from which high-energy (> 100 TeV) neutrino events have been found. Aims. We characterize the parsec-scale radio properties of the jets and compare them with the quasi-simultaneous Fermi/LAT γ-ray data. Furthermore, we study the jet properties of sources which are in positional coincidence with high-energy neutrino events compared to the full sample. We test the positional agreement of high-energy neutrino events with various AGN samples. Methods. TANAMI VLBI observations at 8.4 GHz are made with southern hemisphere radio telescopes located in Australia, Antarctica, Chile, New Zealand, and South Africa. Results. Our observations yield the first images of many jets below − 30° declination at milliarcsecond resolution. We find that γ-ray loud TANAMI sources tend to be more compact on parsec-scales and have higher core brightness temperatures than γ-ray faint jets, indicating higher Doppler factors. No significant structural difference is found between sources in positional coincidence with high-energy neutrino events and other TANAMI jets. The 22 γ-ray brightest AGN in the TANAMI sky show only a weak positional agreement with high-energy neutrinos demonstrating that the > 100 TeV IceCube signal is not simply dominated by a small number of the γ-ray brightest blazars. Instead, a larger number of sources have to contribute to the signal with each individual source having only a small Poisson probability for producing an event in multi-year integrations of current neutrino detectors.

The Barrow and Dampier Sub-basins of the Northern Carnarvon Basin developed by repeated reactivation of long-lived basement structures during Palaeozoic and Mesozoic tectonism. Inherited basement fabric specific to the terranes and mobile belts in the region comprise northwest, northeast, and north–south-trending Archaean and Proterozoic structures. Reactivation of these structures controlled the shape of the sub-basin depocentres and basement topography, and determined the orientation and style of structures in the sediments.The Lewis Trough is localised over a reactivated NEtrending former strike-slip zone, the North West Shelf (NWS) Megashear. The inboard Dampier Sub-basin reflects the influence of the fabric of the underlying Pilbara Craton. Proterozoic mobile belts underlie the Barrow Sub-basin where basement fabric is dominated by two structural trends, NE-trending Megashear structures offset sinistrally by NS-trending Pinjarra structures.The present-day geometry and basement topography of the basins is the result of accumulated deformation produced by three main tectonic phases. Regional NESW extension in the Devonian produced sinistral strikeslip on NE-trending Megashear structures. Large Devonian-Carboniferous pull-apart basins were introduced in the Barrow Sub-basin where Megashear structures stepped to the left and are responsible for the major structural differences between the Barrow and Dampier Sub-basins. Northwest extension in the Late Carboniferous to Early Permian marks the main extensional phase with extreme crustal attenuation. The majority of the Northern Carnarvon basin sediments were deposited during this extensional basin phase and the subsequent Triassic sag phase. Jurassic extension reactivated Permian faults during renewed NW extension. A change in extension direction occurred prior to Cretaceous sea floor spreading, manifest in basement block rotation concentrated in the Tithonian. This event changed the shape and size of basin compartments and altered fluid migration pathways.The currently mapped structural trends, compartment size and shape of the Barrow and Dampier Sub-basins of the Northern Carnarvon Basin reflect the “character” of the basement beneath and surrounding each of the subbasins.Basement character is defined by the composition, lithology, structure, grain, fabric, rheology and regolith of each basement terrane beneath or surrounding the target basins. Basement character can be discriminated and mapped with mineral exploration methods that use non-seismic data such as gravity, magnetics and bathymetry, and then calibrated with available seismic and well datasets. A range of remote sensing and geophysical datasets were systematically calibrated, integrated and interpreted starting at a scale of about 1:1.5 million (covering much of Western Australia) and progressing to scales of about 1:250,000 in the sub-basins. The interpretation produced a new view of the basement geology of the region and its influence on basin architecture and fill history. The bottom-up or basement-first interpretation process complements the more traditional top-down seismic and well-driven exploration methods, providing a consistent map-based regional structural model that constrains structural interpretation of seismic data.The combination of non-seismic and seismic data provides a powerful tool for mapping basement architecture (SEEBASE™: Structurally Enhanced view of Economic Basement); basement-involved faults (trap type and size); intra-sedimentary geology (igneous bodies, basement-detached faults, basin floor fans); primary fluid focussing and migration pathways and paleo-river drainage patterns, sediment composition and lithology.

Abstract We investigated emerald, the bright-green gem variety of beryl, from a new locality at Kruta Balka, Ukraine, and compare its chemical characteristics with those of emeralds from selected occurrences worldwide (Austria, Australia, Colombia, South Africa, Russia) to clarify the types and amounts of substitutions as well as the factors controlling such substitutions. For selected crystals, Be and Li were determined by secondary ion mass spectrometry, which showed that the generally assumed value of 3 Be atoms per formula unit (apfu) is valid; only some samples such as the emerald from Kruta Balka deviate from this value (2.944 Be apfu). An important substitution in emerald (expressed as an exchange vector with the additive component Al2Be3Si6O18) is (Mg,Fe2+)NaAl–1☐–1, leading to a hypothetical end-member NaAl(Mg,Fe2+)[Be3Si6O18] called femag-beryl with Na occupying a vacancy position (☐) in the structural channels of beryl. Based on both our results and data from the literature, emeralds worldwide can be characterized based on the amount of femag-substitution. Other minor substitutions in Li-bearing emerald include the exchange vectors LiNa2Al–1☐–2 and LiNaBe–1☐–1, where the former is unique to the Kruta Balka emeralds. Rarely, some Li can also be situated at a channel site, based on stoichiometric considerations. Both Cr- and V-distribution can be very heterogeneous in individual crystals, as shown in the samples from Kruta Balka, Madagascar, and Zimbabwe. Nevertheless, taking average values available for emerald occurrences, the Cr/(Cr+V) ratio (Cr#) in combination with the Mg/(Mg+Fe) ratio (Mg#) and the amount of femag-substitution allows emerald occurrences to be characterized. The “ultramafic” schist-type emeralds with high Cr# and Mg# come from occur-rences where the Fe-Mg-Cr-V component is controlled by the presence of ultramafic meta-igneous rocks. Emeralds with highly variable Mg# come from “sedimentary” localities, where the Fe-Mg-Cr-V component is controlled by metamorphosed sediments such as black shales and carbonates. A “transitional” group has both metasediments and ultramafic rocks as country rocks. Most “ultramafic” schist type occurrences are characterized by a high amount of femag-component, whereas those from the “sedimentary” and “transitional” groups have low femag contents. Growth conditions derived from the zoning pattern—combined replacement, sector, and oscillatory zoning—in the Kruta Balka emeralds indicate disequilibrium growth from a fluid along with late-stage Na-infiltration. Inclusions in Kruta Balka emeralds (zircon with up to 11 wt% Hf, tourmaline, albite, Sc-bearing apatite) point to a pegmatitic origin.

Objectives: To explicate the organisational change agenda of the COAG coordinated care trials within the Australian health system and to illuminate the role of science in this process. Methods and Results: This article briefly outlines the COAG coordinated care trial aims and the effect of the trial as a change initiative in rural South Australia. It is proposed that although the formal trial outcomes are still not clear, the trial had significant impact upon health service delivery in some sites. The trial involved standard research methods with control and intervention groups and with key hypotheses being tested to compare the costs and service utilization profile of intervention and control groups. Formal results indicate that costs were not significantly different between intervention and control groups across all sites, but that the trial, nonetheless, had a powerful impact on the attitude and behaviours of service providers in the rural trial on Eyre Peninsula in particular. Some of the key structural changes now in place are outlined. Conclusions: The COAG trial has had many and varied impacts upon those organisations and individual providers involved with it. It is argued here that since successive initiatives had been implemented before final evaluation results were published, other agendas were served by the trial apart from those of standard scientific research and hypothesis testing. That is, the main impact of the coordinated care trial in Eyre Region at least has been change by stealth, and not through scientific research and demonstration. Implications: The COAG trials have set in train a series of structural and procedural changes in the methods of delivery and management of primary health care systems; changes that are embodied in the Enhanced Primary Care packages (EPC) and other initiatives recently introduced by the Commonwealth Government. These changes have occurred and are occurring across the system without formal evidence as to their efficacy, suggesting that other financial motives are driving these new approaches apart from the goal of improving health outcomes for consumers. Also, if science is to be used in this way to drive policy and procedural change ahead of actual outcome evidence, it is important that we examine the more subtle agendas of such research projects in future if the integrity of the scientific method is to be maintained. The occurrence of such phenomena questions the very foundation of scientific endeavour and weakens the application of scientific principles in the arena of social and political science.

Approximately 40 per cent of the 52,000 km2 Sydney Basin lies in shallow waters (less than 200 m) off the central New South Wales coast. Containing more than 5,000 m of Permo-Triassic marine and non-marine sediments, and having been the subject of several previous exploration campaigns, no wells have been drilled in the offshore despite widespread numerous occurrences of oil and gas onshore.The Sydney Basin, together with the Bowen and Gunnedah basins, form a major longitudinal Permo-Triassic basinal complex stretching 2,500 km down the eastern margin of Australia. Whereas the onset of this basinal development may have been extensional, reinterpretation of seismic and other geophysical data highlight the potential role played in the early development of the Sydney Basin by easterly directed compression. A compressional style is to be contrasted with the dominantly extensional style interpreted by others for the adjacent onshore areas. The most conspicuous structural element in the offshore, the Offshore Uplift, is interpreted to represent the western overthrust edge of the Currarong Orogen. Accepting the Panthalassan margin geometry of Veevers and Powell (1994) it follows that the Offshore Uplift and restored Dampier Ridge would have constituted a 'greater Currarong Orogen'. A series of progressive westerly directed thrust fronts may have been established across the Panthalassan margin, including the uplifted western margin of the Currarong Orogen, which over-rode and created a thrust load onto the eastern margin of the Lachlan Fold Belt. Much of the Early Permian development of the Sydney Basin therefore could have resulted as a consequence of foreland loading. This is consistent with depositional trends including the overall westerly directed marine transgression which dominated the sedimentary record of the Early Permian. Alternatively, this marine transgression may represent the sag phase induced along a segment of the Bowen-Sydney rift system that had been offset by the Hunter River Transverse Zone from the Gunnedah Basin to a site coincident with the Offshore Syncline.Previous interpretations identified structural development of the Currarong Orogen as either a Cretaceous (Tasman Sea rift related) or Middle to Late Permian phenomena. Early Permian structural growth of the offshore Uplift has important implications for petroleum exploration. The major impediment to exploration appears to be the perception that the Sydney Basin lacks suitable reservoir targets and is gas-prone. Potential source and seal sequences occur extensively within both Early Permian marine shales and siltstones and Early and Late Permian coal measure sequences. The emerging uplift provided a major sediment provenance area and represented a barrier behind which restricted anoxic conditions flourished, conditions favouring the preservation of organic matter. Late Permian and Triassic sequences are absent across the crestal portions of the uplift. However, the emerging, sea-ward facing flank of the uplift would have been subject to marginal and shallow marine, wave-base, barrier and strand bar deposition during the Lower Permian, conditions known in the onshore to favour better reservoir development.Gas demand to the greater Sydney region is anticipated to exceed supply by the year 2000, and new gas markets are being eagerly sought in time for the expiration, in 2006, of the current contract under which gas is supplied to Sydney via the Moomba pipeline.Cretaceous, Tasman Sea rift related, structuring is subordinate to that of the earlier compressional and wrench related structuring. Several new structural targets have been added to the existing inventory of prospects and leads, including some now considered optiminally located with respect to source rock and reservoir development.

The immense structural inequalities of the global social /political economy can no longer be contained through consensual mechanisms of state control. The ruling classes have lost legitimacy; we are witnessing a breakdown of ruling-class hegemony on a world scale. There is good and evil among mankind; thus it necessitates the conflict between the good and evil on Earth. We are in for a period of major conflicts and great upheavals. It's generally regarded that Mencius (c.371- c.289 B.C) a student of Confucianism developed his entire philosophy from two basic propositions: the first, that Man's original nature is good; and the second, that Man's original nature becomes evil when his wishes are not fulfilled. What is good and what is evil? Philosophers of all ages have thought over this question. Each reckoned that he had solved the question once and for all, yet within a few years the problem would re-emerge with new dimensions. Repeated acts of corruption and evil action makes a man corrupt and takes away a man from his original nature. Still now majority of the people of the world give compliance to corruption because of social pressures, economic pressures, cultural pressures and political pressures. The conflict between good and evil is ancient on earth and is prevalent to this day. May be the final confrontation between the descendants of Cain and Abel is at our doorsteps. During the 2nd World War America with its European allies went into world wide military campaign to defeat Germany, Italy and Japan. When the Second World War ended in 1945 the United States of America came out as victorious. America was the first country to detonate atomic bomb in another country. During that period Russia fell into competition with America in politically colonizing countries after countries. With the fall of Communism Russia terminated its desire wanting to be the champion of the oppressed of the world. The situation in Russia continues to deteriorate, a country which until only a few years ago was a superpower. Russians are deeply disillusioned today with the new politicians in Russia, who they says "promise everything and give nothing." The Russians still strongly oppose a world order dominated by the United States. If anyone looks at or investigates the situations in other countries it can be seen that at present almost all countries of the world are similar or same in the forms of structures of corruption and evil. The Worldwide control of humanity‘s economic, social and political activities is under the helm of US corporate and military power. The US has established its control over 191 governments which are members of the United Nations. The last head of state of the former Soviet Union, Mikhail Gorbachev on December 2012, at a conference on the future of the Middle East and the Black Sea region in the Turkish city of Istanbul, has warned the US of an imminent Soviet-like collapse if Washington persists with its hegemonic policies. Mass public protest occurred against US hegemony are mainly from Muslim countries of South East Asia, South Asia, Central Asia, West Asia, North Africa and Africa. The latest mass protests erupted in September 2012 when the divine Prophet Muhammad (pbuh) was insulted by America and Israel. There were strong mass protests by people from Indonesia to Morocco and in the European countries by mostly immigrants and Australia were there are Muslim populations. This worldwide protest had occurred while the rise of the masses is ongoing against corrupt rulers in West Asia and North Africa. The masses of the people are thirsty and desperate for justice, dignity, economic welfare and human rights. Most major religions have their own sources of information on the Last Age of Mankind or the End of Times, which often include fateful battles between the forces of good and evil and cataclysmic natural disasters. Humans are evolving to a final stage of their evolution towards a 'New Age‘ that is to come which the corrupt does not understand. At present times a final battle of good versus evil on Earth will ensue. The World powers (leaders) and their entourages who are really detached from the masses have organized to keep aloft the present world order that degenerates the masses in corruption, keeps the people in unhappiness, and deprives the masses from economic well being, education and keeps promoting wars and conflicts to support corruption and evil. We are at the ?End of Times?. The Promised Messiah will come to set right what is wrong, no doubt. DOI: http://dx.doi.org/10.3329/bioethics.v4i1.14264 Bangladesh Journal of Bioethics 2013; 4(1):9-19

The immense structural inequalities of the global social /political economy can no longer be contained through consensual mechanisms of state control. The ruling classes have lost legitimacy; we are witnessing a breakdown of ruling-class hegemony on a world scale. There is good and evil among mankind; thus it necessitates the conflict between the good and evil on Earth. We are in for a period of major conflicts and great upheavals. It's generally regarded that Mencius (c.371-c.289 B.C) a student of Confucianism developed his entire philosophy from two basic propositions: the first, that Man's original nature is good; and the second, that Man's original nature becomes evil when his wishes are not fulfilled. What is good and what is evil? Philosophers of all ages have thought over this question. Each reckoned that he had solved the question once and for all, yet within a few years the problem would re-emerge with new dimensions. Repeated acts of corruption and evil action makes a man corrupt and takes away a man from his original nature. Still now majority of the people of the world give compliance to corruption because of social pressures, economic pressures, cultural pressures and political pressures. The conflict between good and evil is ancient on earth and is prevalent to this day. May be the final confrontation between the descendants of Cain and Abel is at our doorsteps. During the 2nd World War America with its European allies went into world wide military campaign to defeat Germany, Italy and Japan. When the Second World War ended in 1945 the United States of America came out as victorious. America was the first country to detonate atomic bomb in another country. During that period Russia fell into competition with America in politically colonizing countries after countries. With the fall of Communism Russia terminated its desire wanting to be the champion of the oppressed of the world. The situation in Russia continues to deteriorate, a country which until only a few years ago was a superpower. Russians are deeply disillusioned today with the new politicians in Russia, who they says "promise everything and give nothing." The Russians still strongly oppose a world order dominated by the United States. If anyone looks at or investigates the situations in other countries it can be seen that at present almost all countries of the world are similar or same in the forms of structures of corruption and evil. The Worldwide control of humanity‘s economic, social and political activities is under the helm of US corporate and military power. The US has established its control over 191 governments which are members of the United Nations. The last head of state of the former Soviet Union, Mikhail Gorbachev on December 2012, at a conference on the future of the Middle East and the Black Sea region in the Turkish city of Istanbul, has warned the US of an imminent Soviet-like collapse if Washington persists with its hegemonic policies. Mass public protest occurred against US hegemony are mainly from Muslim countries of South East Asia, South Asia, Central Asia, West Asia, North Africa and Africa. The latest mass protests erupted in September 2012 when the divine Prophet Muhammad (pbuh) was insulted by America and Israel. There were strong mass protests by people from Indonesia to Morocco and in the European countries by mostly immigrants and Australia were there are Muslim populations. This worldwide protest had occurred while the rise of the masses is ongoing against corrupt rulers in West Asia and North Africa. The masses of the people are thirsty and desperate for justice, dignity, economic welfare and human rights. Most major religions have their own sources of information on the Last Age of Mankind or the End of Times, which often include fateful battles between the forces of good and evil and cataclysmic natural disasters. Humans are evolving to a final stage of their evolution towards a ?New Age‘ that is to come which the corrupt does not understand. At present times a final battle of good versus evil on Earth will ensue. The World powers (leaders) and their entourages who are really detached from the masses have organized to keep aloft the present world order that degenerates the masses in corruption, keeps the people in unhappiness, and deprives the masses from economic well being, education and keeps promoting wars and conflicts to support corruption and evil. We are at the ?End of Times?. The Promised Messiah will come to set right what is wrong, no doubt. DOI: http://dx.doi.org/10.3329/bioethics.v4i2.16372 Bangladesh Journal of Bioethics 2013; 4(2) 9-21

Drawing on communication, feminist studies and public relations scholarship, this interdisciplinary paper contributes to feminist perspectives on public relations in order to draw attention to the disciplinary implications of the ongoing exclusion of diverse women’s voices and the ways gendered exclusion is exacerbated by the marginalisation of voices from Global South, Indigenous and settler colonial contexts. Writing from three countries located in the Asia-Pacific region, the authors interrogate the field as feminist public relations scholars and highlight the need for more inclusive practices in academic processes that shape disciplinary knowledge. The paper challenges liberal feminist and postfeminist perspectives, arguing these have significant implications for the production of public relations knowledge. Instead, it argues that feminist public relations scholarship needs to foreground intersectionality and social justice and embrace perspectives and research outside the US and Europe. It calls for greater awareness of the ways power is associated with privilege and determines ‘legitimate’ disciplinary knowledge within public relations in order to challenge structural and institutional inequalities. In advocating for critical, intersectional and transnational feminist public relations, the paper argues for greater reflexivity and vigilance in opening up the field to new and diverse perspectives and improving disciplinary processes.

Abstract As Proteaceae subfamily Proteoideae are richly represented in the Cape Floristic Region of southern Africa and in south-western Australia, it is a convenient group for comparative studies of evolution and adaptation of plants in widely separated areas with a Mediterranean-type climate. Although species of Proteoideae attract considerable attention of researchers, the structural diversity of wood in this group remains under-explored. The wood structure of 51 species of 14 African and Australian genera of Proteoideae (Proteaceae) has been studied. These taxa are uniform in their wood structure; the diversity patterns are more related to plant stature, climatic factors and fire-survival strategies than to the taxonomy or phylogeny of the subfamily. Increases in length and diameter of fibres and diameter of pits in fibre walls are associated with a shift from a semi-arid winter-dry climate to a milder climate with winter rainfall. These trends may imply the transition from non-conducting imperforate tracheary elements to conducting elements in Mediterranean-type climatic regions. This presumable gain of hydraulic function of imperforate tracheary elements could be explained by adaptation to freeze–thaw stress during the late Quaternary, at least in the Cape Region. Vessel grouping shows no correlations with climatic factors. The seeders have a higher vessel frequency and narrower and lower rays than sprouters. We hypothesize that the larger rays in overground stems of sprouters serve as the sites of epicormic buds that provide for resprouting after fire or other damage. The occurrence of sclerified cells and/or irregularly arranged (occasionally circular) tracheary elements in broad rays of some species are thought to be responses to excessive sucrose transport in secondary phloem.

This paper reports on an empirical study to examine the relationship between supply chain performance and its impact on firm performance - a controversial issue in the literature. It develops an integrated performance measurement framework to survey the relationship between best practice firms and their position in supply/buy networks operating between firms in the Electronics and IT Communications industry in the Northern Adelaide Region of South Australia. The methodology joins models of best practice with theories of structural network analysis applied to a sample of 44 original equipment manufacturers (OEMs) and their first tier suppliers and customer firms. It uses a combination of quantitative and qualitative analysis to arrive at a classification of best practice firms, and correlates their leader and lagger status against a five class typology of supply and buy networks for the OEM firm, to show the impact of supply chain performance on firm performance. The results reported here are a pilot study to test the validity of the conceptual framework preparatory to a future survey of the full population of firms in the industry operating multi-tier supply/buy chains. Advanced statistical techniques and snowball sampling will be used to test and confirm the preliminary relationships presented here. The study was sponsored by Playford City Council as part of its Industrial Renewal Program for Northern Adelaide to build regional systems of innovation and agendas for change.

Introduction I am a transmigrant who has moved back and forth between the West and the Rest. I was born and raised in a Muslim family in a predominantly Muslim country, Bangladesh, but I spent several years of my childhood in Pakistan. After my marriage, I lived in the United States for a year and a half, the Middle East for 5 years, Australia for three years, back to the Middle East for another 5 years, then, finally, in Australia for the last 12 years. I speak Bengali (my mother tongue), Urdu (which I learnt in Pakistan), a bit of Arabic (learnt in the Middle East); but English has always been my medium of instruction. So where is home? Is it my place of origin, the Muslim umma, or my land of settlement? Or is it my ‘root’ or my ‘route’ (Blunt and Dowling)? Blunt and Dowling (199) observe that the lives of transmigrants are often interpreted in terms of their ‘roots’ and ‘routes’, which are two frameworks for thinking about home, homeland and diaspora. Whereas ‘roots’ might imply an original homeland from which people have scattered, and to which they might seek to return, ‘routes’ focuses on mobile, multiple and transcultural geographies of home. However, both ‘roots’ and ‘routes’ are attached to emotion and identity, and both invoke a sense of place, belonging or alienation that is intrinsically tied to a sense of self (Blunt and Dowling 196-219). In this paper, I equate home with my root (place of birth) and route (transnational homing) within the context of the ‘diaspora and belonging’. First I define the diaspora and possible criteria of belonging. Next I describe my transnational homing within the framework of diaspora and belonging. Finally, I consider how Australia can be a ‘home’ for me and other Muslim Australians. The Diaspora and Belonging Blunt and Dowling (199) define diaspora as “scattering of people over space and transnational connections between people and the places”. Cohen emphasised the ethno-cultural aspects of the diaspora setting; that is, how migrants identify and position themselves in other nations in terms of their (different) ethnic and cultural orientation. Hall argues that the diasporic subjects form a cultural identity through transformation and difference. Speaking of the Hindu diaspora in the UK and Caribbean, Vertovec (21-23) contends that the migrants’ contact with their original ‘home’ or diaspora depends on four factors: migration processes and factors of settlement, cultural composition, structural and political power, and community development. With regard to the first factor, migration processes and factors of settlement, Vertovec explains that if the migrants are political or economic refugees, or on a temporary visa, they are likely to live in a ‘myth of return’. In the cultural composition context, Vertovec argues that religion, language, region of origin, caste, and degree of cultural homogenisation are factors in which migrants are bound to their homeland. Concerning the social structure and political power issue, Vertovec suggests that the extent and nature of racial and ethnic pluralism or social stigma, class composition, degree of institutionalised racism, involvement in party politics (or active citizenship) determine migrants’ connection to their new or old home. Finally, community development, including membership in organisations (political, union, religious, cultural, leisure), leadership qualities, and ethnic convergence or conflict (trends towards intra-communal or inter-ethnic/inter-religious co-operation) would also affect the migrants’ sense of belonging. Using these scholarly ideas as triggers, I will examine my home and belonging over the last few decades. My Home In an initial stage of my transmigrant history, my home was my root (place of birth, Dhaka, Bangladesh). Subsequently, my routes (settlement in different countries) reshaped my homes. In all respects, the ethno-cultural factors have played a big part in my definition of ‘home’. But on some occasions my ethnic identification has been overridden by my religious identification and vice versa. By ethnic identity, I mean my language (mother tongue) and my connection to my people (Bangladeshi). By my religious identity, I mean my Muslim religion, and my spiritual connection to the umma, a Muslim nation transcending all boundaries. Umma refers to the Muslim identity and unity within a larger Muslim group across national boundaries. The only thing the members of the umma have in common is their Islamic belief (Spencer and Wollman 169-170). In my childhood my father, a banker, was relocated to Karachi, Pakistan (then West Pakistan). Although I lived in Pakistan for much of my childhood, I have never considered it to be my home, even though it is predominantly a Muslim country. In this case, my home was my root (Bangladesh) where my grandparents and extended family lived. Every year I used to visit my grandparents who resided in a small town in Bangladesh (then East Pakistan). Thus my connection with my home was sustained through my extended family, ethnic traditions, language (Bengali/Bangla), and the occasional visits to the landscape of Bangladesh. Smith (9-11) notes that people build their connection or identity to their homeland through their historic land, common historical memories, myths, symbols and traditions. Though Pakistan and Bangladesh had common histories, their traditions of language, dress and ethnic culture were very different. For example, the celebration of the Bengali New Year (Pohela Baishakh), folk dance, folk music and folk tales, drama, poetry, lyrics of poets Rabindranath Tagore (Rabindra Sangeet) and Nazrul Islam (Nazrul Geeti) are distinct in the cultural heritage of Bangladesh. Special musical instruments such as the banshi (a bamboo flute), dhol (drums), ektara (a single-stringed instrument) and dotara (a four-stringed instrument) are unique to Bangladeshi culture. The Bangladeshi cuisine (rice and freshwater fish) is also different from Pakistan where people mainly eat flat round bread (roti) and meat (gosh). However, my bonding factor to Bangladesh was my relatives, particularly my grandparents as they made me feel one of ‘us’. Their affection for me was irreplaceable. The train journey from Dhaka (capital city) to their town, Noakhali, was captivating. The hustle and bustle at the train station and the lush green paddy fields along the train journey reminded me that this was my ‘home’. Though I spoke the official language (Urdu) in Pakistan and had a few Pakistani friends in Karachi, they could never replace my feelings for my friends, extended relatives and cousins who lived in Bangladesh. I could not relate to the landscape or dry weather of Pakistan. More importantly, some Pakistani women (our neighbours) were critical of my mother’s traditional dress (saree), and described it as revealing because it showed a bit of her back. They took pride in their traditional dress (shalwar, kameez, dopatta), which they considered to be more covered and ‘Islamic’. So, because of our traditional dress (saree) and perhaps other differences, we were regarded as the ‘Other’. In 1970 my father was relocated back to Dhaka, Bangladesh, and I was glad to go home. It should be noted that both Pakistan and Bangladesh were separated from India in 1947 – first as one nation; then, in 1971, Bangladesh became independent from Pakistan. The conflict between Bangladesh (then East Pakistan) and Pakistan (then West Pakistan) originated for economic and political reasons. At this time I was a high school student and witnessed acts of genocide committed by the Pakistani regime against the Bangladeshis (March-December 1971). My memories of these acts are vivid and still very painful. After my marriage, I moved from Bangladesh to the United States. In this instance, my new route (Austin, Texas, USA), as it happened, did not become my home. Here the ethno-cultural and Islamic cultural factors took precedence. I spoke the English language, made some American friends, and studied history at the University of Texas. I appreciated the warm friendship extended to me in the US, but experienced a degree of culture shock. I did not appreciate the pub life, alcohol consumption, and what I perceived to be the lack of family bonds (children moving out at the age of 18, families only meeting occasionally on birthdays and Christmas). Furthermore, I could not relate to de facto relationships and acceptance of sex before marriage. However, to me ‘home’ meant a family orientation and living in close contact with family. Besides the cultural divide, my husband and I were living in the US on student visas and, as Vertovec (21-23) noted, temporary visa status can deter people from their sense of belonging to the host country. In retrospect I can see that we lived in the ‘myth of return’. However, our next move for a better life was not to our root (Bangladesh), but another route to the Muslim world of Dhahran in Saudi Arabia. My husband moved to Dhahran not because it was a Muslim world but because it gave him better economic opportunities. However, I thought this new destination would become my home – the home that was coined by Anderson as the imagined nation, or my Muslim umma. Anderson argues that the imagined communities are “to be distinguished, not by their falsity/genuineness, but by the style in which they are imagined” (6; Wood 61). Hall (122) asserts: identity is actually formed through unconscious processes over time, rather than being innate in consciousness at birth. There is always something ‘imaginary’ or fantasized about its unity. It always remains incomplete, is always ‘in process’, always ‘being formed’. As discussed above, when I had returned home to Bangladesh from Pakistan – both Muslim countries – my primary connection to my home country was my ethnic identity, language and traditions. My ethnic identity overshadowed the religious identity. But when I moved to Saudi Arabia, where my ethnic identity differed from that of the mainstream Arabs and Bedouin/nomadic Arabs, my connection to this new land was through my Islamic cultural and religious identity. Admittedly, this connection to the umma was more psychological than physical, but I was now in close proximity to Mecca, and to my home of Dhaka, Bangladesh. Mecca is an important city in Saudi Arabia for Muslims because it is the holy city of Islam, the home to the Ka’aba (the religious centre of Islam), and the birthplace of Prophet Muhammad [Peace Be Upon Him]. It is also the destination of the Hajj, one of the five pillars of Islamic faith. Therefore, Mecca is home to significant events in Islamic history, as well as being an important present day centre for the Islamic faith. We lived in Dhahran, Saudi Arabia for 5 years. Though it was a 2.5 hours flight away, I treasured Mecca’s proximity and regarded Dhahran as my second and spiritual home. Saudi Arabia had a restricted lifestyle for women, but I liked it because it was a Muslim country that gave me the opportunity to perform umrah Hajj (pilgrimage). However, Saudi Arabia did not allow citizenship to expatriates. Saudi Arabia’s government was keen to protect the status quo and did not want to compromise its cultural values or standard of living by allowing foreigners to become a permanent part of society. In exceptional circumstances only, the King granted citizenship to a foreigner for outstanding service to the state over a number of years. Children of foreigners born in Saudi Arabia did not have rights of local citizenship; they automatically assumed the nationality of their parents. If it was available, Saudi citizenship would assure expatriates a secure and permanent living in Saudi Arabia; as it was, there was a fear among the non-Saudis that they would have to leave the country once their job contract expired. Under the circumstances, though my spiritual connection to Mecca was strong, my husband was convinced that Saudi Arabia did not provide any job security. So, in 1987 when Australia offered migration to highly skilled people, my husband decided to migrate to Australia for a better and more secure economic life. I agreed to his decision, but quite reluctantly because we were again moving to a non-Muslim part of the world, which would be culturally different and far away from my original homeland (Bangladesh). In Australia, we lived first in Brisbane, then Adelaide, and after three years we took our Australian citizenship. At that stage I loved the Barossa Valley and Victor Harbour in South Australia, and the Gold Coast and Sunshine Coast in Queensland, but did not feel at home in Australia. We bought a house in Adelaide and I was a full time home-maker but was always apprehensive that my children (two boys) would lose their culture in this non-Muslim world. In 1990 we once again moved back to the Muslim world, this time to Muscat, Sultanate of Oman. My connection to this route was again spiritual. I valued the fact that we would live in a Muslim country and our children would be brought up in a Muslim environment. But my husband’s move was purely financial as he got a lucrative job offer in Muscat. We had another son in Oman. We enjoyed the luxurious lifestyle provided by my husband’s workplace and the service provided by the housemaid. I loved the beaches and freedom to drive my car, and I appreciated the friendly Omani people. I also enjoyed our frequent trips (4 hours flight) to my root, Dhaka, Bangladesh. So our children were raised within our ethnic and Islamic culture, remained close to my root (family in Dhaka), though they attended a British school in Muscat. But by the time I started considering Oman to be my second home, we had to leave once again for a place that could provide us with a more secure future. Oman was like Saudi Arabia; it employed expatriates only on a contract basis, and did not give them citizenship (not even fellow Muslims). So after 5 years it was time to move back to Australia. It was with great reluctance that I moved with my husband to Brisbane in 1995 because once again we were to face a different cultural context. As mentioned earlier, we lived in Brisbane in the late 1980s; I liked the weather, the landscape, but did not consider it home for cultural reasons. Our boys started attending expensive private schools and we bought a house in a prestigious Western suburb in Brisbane. Soon after arriving I started my tertiary education at the University of Queensland, and finished an MA in Historical Studies in Indian History in 1998. Still Australia was not my home. I kept thinking that we would return to my previous routes or the ‘imagined’ homeland somewhere in the Middle East, in close proximity to my root (Bangladesh), where we could remain economically secure in a Muslim country. But gradually I began to feel that Australia was becoming my ‘home’. I had gradually become involved in professional and community activities (with university colleagues, the Bangladeshi community and Muslim women’s organisations), and in retrospect I could see that this was an early stage of my ‘self-actualisation’ (Maslow). Through my involvement with diverse people, I felt emotionally connected with the concerns, hopes and dreams of my Muslim-Australian friends. Subsequently, I also felt connected with my mainstream Australian friends whose emotions and fears (9/11 incident, Bali bombing and 7/7 tragedy) were similar to mine. In late 1998 I started my PhD studies on the immigration history of Australia, with a particular focus on the historical settlement of Muslims in Australia. This entailed retrieving archival files and interviewing people, mostly Muslims and some mainstream Australians, and enquiring into relevant migration issues. I also became more active in community issues, and was not constrained by my circumstances. By circumstances, I mean that even though I belonged to a patriarchally structured Muslim family, where my husband was the main breadwinner, main decision-maker, my independence and research activities (entailing frequent interstate trips for data collection, and public speaking) were not frowned upon or forbidden (Khan 14-15); fortunately, my husband appreciated my passion for research and gave me his trust and support. This, along with the Muslim community’s support (interviews), and the wider community’s recognition (for example, the publication of my letters in Australian newspapers, interviews on radio and television) enabled me to develop my self-esteem and built up my bicultural identity as a Muslim in a predominantly Christian country and as a Bangladeshi-Australian. In 2005, for the sake of a better job opportunity, my husband moved to the UK, but this time I asserted that I would not move again. I felt that here in Australia (now in Perth) I had a job, an identity and a home. This time my husband was able to secure a good job back in Australia and was only away for a year. I no longer dream of finding a home in the Middle East. Through my bicultural identity here in Australia I feel connected to the wider community and to the Muslim umma. However, my attachment to the umma has become ambivalent. I feel proud of my Australian-Muslim identity but I am concerned about the jihadi ideology of militant Muslims. By jihadi ideology, I mean the extremist ideology of the al-Qaeda terrorist group (Farrar 2007). The Muslim umma now incorporates both moderate and radical Muslims. The radical Muslims (though only a tiny minority of 1.4 billion Muslims worldwide) pose a threat to their moderate counterparts as well as to non-Muslims. In the UK, some second- and third-generation Muslims identify themselves with the umma rather than their parents’ homelands or their country of birth (Husain). It should not be a matter of concern if these young Muslims adopt a ‘pure’ Muslim identity, providing at the same time they are loyal to their country of residence. But when they resort to terrorism with their ‘pure’ Muslim identity (e.g., the 7/7 London bombers) they defame my religion Islam, and undermine my spiritual connection to the umma. As a 1st generation immigrant, the defining criteria of my ‘homeliness’ in Australia are my ethno-cultural and religious identity (which includes my family), my active citizenship, and my community development/contribution through my research work – all of which allow me a sense of efficacy in my life. My ethnic and religious identities generally co-exist equally, but when I see some Muslims kill my fellow Australians (such as the Bali bombings in 2002 and 2005) my Australian identity takes precedence. I feel for the victims and condemn the perpetrators. On the other hand, when I see politics play a role over the human rights issues (e.g., the Tampa incident), my religious identity begs me to comment on it (see Kabir, Muslims in Australia 295-305). Problematising ‘Home’ for Muslim Australians In the European context, Grillo (863) and Werbner (904), and in the Australian context, Kabir (Muslims in Australia) and Poynting and Mason, have identified the diversity within Islam (national, ethnic, religious etc). Werbner (904) notes that in spite of the “wishful talk of the emergence of a ‘British Islam’, even today there are Pakistani, Bangladeshi and Arab mosques, as well as Turkish and Shia’a mosques”; thus British Muslims retain their separate identities. Similarly, in Australia, the existence of separate mosques for the Bangladeshi, Pakistani, Arab and Shia’a peoples indicates that Australian Muslims have also kept their ethnic identities discrete (Saeed 64-77). However, in times of crisis, such as the Salman Rushdie affair in 1989, and the 1990-1991 Gulf crises, both British and Australian Muslims were quick to unite and express their Islamic identity by way of resistance (Kabir, Muslims in Australia 160-162; Poynting and Mason 68-70). In both British and Australian contexts, I argue that a peaceful rally or resistance is indicative of active citizenship of Muslims as it reveals their sense of belonging (also Werbner 905). So when a transmigrant Muslim wants to make a peaceful demonstration, the Western world should be encouraged, not threatened – as long as the transmigrant’s allegiances lie also with the host country. In the European context, Grillo (868) writes: when I asked Mehmet if he was planning to stay in Germany he answered without hesitation: ‘Yes, of course’. And then, after a little break, he added ‘as long as we can live here as Muslims’. In this context, I support Mehmet’s desire to live as a Muslim in a non-Muslim world as long as this is peaceful. Paradoxically, living a Muslim life through ijtihad can be either socially progressive or destructive. The Canadian Muslim feminist Irshad Manji relies on ijtihad, but so does Osama bin Laden! Manji emphasises that ijtihad can be, on the one hand, the adaptation of Islam using independent reasoning, hybridity and the contesting of ‘traditional’ family values (c.f. Doogue and Kirkwood 275-276, 314); and, on the other, ijtihad can take the form of conservative, patriarchal and militant Islamic values. The al-Qaeda terrorist Osama bin Laden espouses the jihadi ideology of Sayyid Qutb (1906-1966), an Egyptian who early in his career might have been described as a Muslim modernist who believed that Islam and Western secular ideals could be reconciled. But he discarded that idea after going to the US in 1948-50; there he was treated as ‘different’ and that treatment turned him against the West. He came back to Egypt and embraced a much more rigid and militaristic form of Islam (Esposito 136). Other scholars, such as Cesari, have identified a third orientation – a ‘secularised Islam’, which stresses general beliefs in the values of Islam and an Islamic identity, without too much concern for practices. Grillo (871) observed Islam in the West emphasised diversity. He stressed that, “some [Muslims were] more quietest, some more secular, some more clamorous, some more negotiatory”, while some were exclusively characterised by Islamic identity, such as wearing the burqa (elaborate veils), hijabs (headscarves), beards by men and total abstinence from drinking alcohol. So Mehmet, cited above, could be living a Muslim life within the spectrum of these possibilities, ranging from an integrating mode to a strict, militant Muslim manner. In the UK context, Zubaida (96) contends that marginalised, culturally-impoverished youth are the people for whom radical, militant Islamism may have an appeal, though it must be noted that the 7/7 bombers belonged to affluent families (O’Sullivan 14; Husain). In Australia, Muslim Australians are facing three challenges. First, the Muslim unemployment rate: it was three times higher than the national total in 1996 and 2001 (Kabir, Muslims in Australia 266-278; Kabir, “What Does It Mean” 63). Second, some spiritual leaders have used extreme rhetoric to appeal to marginalised youth; in January 2007, the Australian-born imam of Lebanese background, Sheikh Feiz Mohammad, was alleged to have employed a DVD format to urge children to kill the enemies of Islam and to have praised martyrs with a violent interpretation of jihad (Chulov 2). Third, the proposed citizenship test has the potential to make new migrants’ – particularly Muslims’ – settlement in Australia stressful (Kabir, “What Does It Mean” 62-79); in May 2007, fuelled by perceptions that some migrants – especially Muslims – were not integrating quickly enough, the Howard government introduced a citizenship test bill that proposes to test applicants on their English language skills and knowledge of Australian history and ‘values’. I contend that being able to demonstrate knowledge of history and having English language skills is no guarantee that a migrant will be a good citizen. Through my transmigrant history, I have learnt that developing a bond with a new place takes time, acceptance and a gradual change of identity, which are less likely to happen when facing assimilationist constraints. I spoke English and studied history in the United States, but I did not consider it my home. I did not speak the Arabic language, and did not study Middle Eastern history while I was in the Middle East, but I felt connected to it for cultural and religious reasons. Through my knowledge of history and English language proficiency I did not make Australia my home when I first migrated to Australia. Australia became my home when I started interacting with other Australians, which was made possible by having the time at my disposal and by fortunate circumstances, which included a fairly high level of efficacy and affluence. If I had been rejected because of my lack of knowledge of ‘Australian values’, or had encountered discrimination in the job market, I would have been much less willing to embrace my host country and call it home. I believe a stringent citizenship test is more likely to alienate would-be citizens than to induce their adoption of values and loyalty to their new home. Conclusion Blunt (5) observes that current studies of home often investigate mobile geographies of dwelling and how it shapes one’s identity and belonging. Such geographies of home negotiate from the domestic to the global context, thus mobilising the home beyond a fixed, bounded and confining location. Similarly, in this paper I have discussed how my mobile geography, from the domestic (root) to global (route), has shaped my identity. Though I received a degree of culture shock in the United States, loved the Middle East, and was at first quite resistant to the idea of making Australia my second home, the confidence I acquired in residing in these ‘several homes’ were cumulative and eventually enabled me to regard Australia as my ‘home’. I loved the Middle East, but I did not pursue an active involvement with the Arab community because I was a busy mother. Also I lacked the communication skill (fluency in Arabic) with the local residents who lived outside the expatriates’ campus. I am no longer a cultural freak. I am no longer the same Bangladeshi woman who saw her ethnic and Islamic culture as superior to all other cultures. I have learnt to appreciate Australian values, such as tolerance, ‘a fair go’ and multiculturalism (see Kabir, “What Does It Mean” 62-79). My bicultural identity is my strength. With my ethnic and religious identity, I can relate to the concerns of the Muslim community and other Australian ethnic and religious minorities. And with my Australian identity I have developed ‘a voice’ to pursue active citizenship. Thus my biculturalism has enabled me to retain and merge my former home with my present and permanent home of Australia. References Anderson, Benedict. Imagined Communities: Reflections on the Origin and Spread of Nationalism. London, New York: Verso, 1983. Australian Bureau of Statistics: Census of Housing and Population, 1996 and 2001. Blunt, Alison. Domicile and Diaspora: Anglo-Indian Women and the Spatial Politics of Home. Oxford: Blackwell, 2005. Blunt, Alison, and Robyn Dowling. Home. London and New York: Routledge, 2006. Cesari, Jocelyne. “Muslim Minorities in Europe: The Silent Revolution.” In John L. Esposito and Burgat, eds., Modernising Islam: Religion in the Public Sphere in Europe and the Middle East. London: Hurst, 2003. 251-269. Chulov, Martin. “Treatment Has Sheik Wary of Returning Home.” Weekend Australian 6-7 Jan. 2007: 2. Cohen, Robin. Global Diasporas: An Introduction. Seattle: University of Washington, 1997. Doogue, Geraldine, and Peter Kirkwood. Tomorrow’s Islam: Uniting Old-Age Beliefs and a Modern World. Sydney: ABC Books, 2005. Esposito, John. The Islamic Threat: Myth or Reality? 3rd ed. New York, Oxford: Oxford UP, 1999. Farrar, Max. “When the Bombs Go Off: Rethinking and Managing Diversity Strategies in Leeds, UK.” International Journal of Diversity in Organisations, Communities and Nations 6.5 (2007): 63-68. Grillo, Ralph. “Islam and Transnationalism.” Journal of Ethnic and Migration Studies 30.5 (Sep. 2004): 861-878. Hall, Stuart. Polity Reader in Cultural Theory. Cambridge: Polity Press, 1994. Huntington, Samuel, P. The Clash of Civilisation and the Remaking of World Order. London: Touchstone, 1998. Husain, Ed. The Islamist: Why I Joined Radical Islam in Britain, What I Saw inside and Why I Left. London: Penguin, 2007. Kabir, Nahid. Muslims in Australia: Immigration, Race Relations and Cultural History. London: Kegan Paul, 2005. ———. “What Does It Mean to Be Un-Australian: Views of Australian Muslim Students in 2006.” People and Place 15.1 (2007): 62-79. Khan, Shahnaz. Aversion and Desire: Negotiating Muslim Female Identity in the Diaspora. Toronto: Women’s Press, 2002. Manji, Irshad. The Trouble with Islam Today. Canada:Vintage, 2005. Maslow, Abraham. Motivation and Personality. New York: Harper, 1954. O’Sullivan, J. “The Real British Disease.” Quadrant (Jan.-Feb. 2006): 14-20. Poynting, Scott, and Victoria Mason. “The Resistible Rise of Islamophobia: Anti-Muslim Racism in the UK and Australia before 11 September 2001.” Journal of Sociology 43.1 (2007): 61-86. Saeed, Abdallah. Islam in Australia. Sydney: Allen and Unwin, 2003. Smith, Anthony D. National Identity. Harmondsworth: Penguin, 1991. Spencer, Philip, and Howard Wollman. Nationalism: A Critical Introduction. London: Sage, 2002. Vertovec, Stevens. The Hindu Diaspora: Comparative Patterns. London: Routledge. 2000. Werbner, Pnina, “Theorising Complex Diasporas: Purity and Hybridity in the South Asian Public Sphere in Britain.” Journal of Ethnic and Migration Studies 30.5 (2004): 895-911. Wood, Dennis. “The Diaspora, Community and the Vagrant Space.” In Cynthia Vanden Driesen and Ralph Crane, eds., Diaspora: The Australasian Experience. New Delhi: Prestige, 2005. 59-64. Zubaida, Sami. “Islam in Europe: Unity or Diversity.” Critical Quarterly 45.1-2 (2003): 88-98. Citation reference for this article MLA Style Kabir, Nahid. "Why I Call Australia ‘Home’?: A Transmigrant’s Perspective." M/C Journal 10.4 (2007). echo date('d M. Y'); ?> <http://journal.media-culture.org.au/0708/15-kabir.php>. APA Style Kabir, N. (Aug. 2007) "Why I Call Australia ‘Home’?: A Transmigrant’s Perspective," M/C Journal, 10(4). Retrieved echo date('d M. Y'); ?> from <http://journal.media-culture.org.au/0708/15-kabir.php>.

Old growth is a critical growth stage in many forest types globally. It has many key ecological roles including biodiversity conservation, carbon storage and the provision of services such as water production. The extent of old growth forest has been declining in many ecosystems around the world, with major ecological and ecosystem service consequences. Important insights about such declines, as well as the structure, function and conservation of old growth forest, can be gained from detailed cross-sectional and longitudinal studies of different age cohorts within a given forest ecosystem. In this review article, we outline key insights into the characteristics of, and threats to old growth forests, using the Mountain Ash (Eucalyptus regnans) forests of the Central Highlands of Victoria, south-eastern Australia as a detailed case study. These forests are dominated by the tallest flowering plants on earth and have been subject to several decades of intense study. These studies show that old growth Mountain Ash forests are characterized by (among other features): giant trees (approaching 100 m tall and sometimes exceeding 20 m in circumference), numerous trees with hollows, an understorey of Acacia and rainforest trees, a range of plant and animal species that are rare or absent in younger aged stands, and moist, nutrient-rich soils. The area of old growth Mountain Ash forest has declined to 1.16% of the ∼141,000 ha area occupied by ash-type forests in the Central Highlands region. This is up to 60 times less than it was at the time of European colonization ∼220 years ago. The loss of old growth has major implications for bird, mammal and other biodiversity, as well as for carbon storage and water production for human consumption. The main drivers of old growth decline are recurrent wildfire, widespread clearcutting, and a logging-fire interaction in which cut and then regenerated forests become more flammable and are at significantly elevated risk of burning at high (stand replacing) severity. Climate change is also a driver of old growth decline both through elevating the mortality of large old living trees and underpinning an increase in the frequency of high severity wildfire. These interacting drivers mean that restoring old growth Mountain Ash forest will be an ecological and policy challenge. We argue that a first step must be to cease all commercial logging in the Mountain Ash ecosystem to allow new cohorts of old growth forest to be recruited and thereby expand the extent of the old growth estate. In addition, the Government of Victoria should revert to a past definition of old growth that made it easier for forest to qualify for protection. Given there are high risks of recurrent high-severity wildfire in the existing Mountain Ash forest estate which is dominated by highly flammable young regrowth forest, new technologies (such as the use of drones and satellites) are needed to rapidly detect and then suppress ignitions before fires become large and difficult to control. Mountain Ash forests have provided an important natural laboratory for understanding the dynamics, management and conservation of old growth forest. They have also helped generate some valuable general perspectives likely to be relevant to other forest ecosystems globally. These include: (1) the critical value of multi-facetted cross-sectional and longitudinal studies in quantifying attributes of, and threats to, old growth forest, (2) the need for a carefully crafted definition of old growth that will typically be ecosystem-specific and based on the time required to develop key ecosystem attributes (e.g., large old trees), (3) the importance of rigorous protection measures because poor decisions that result in the loss of old growth now will take prolonged periods to rectify, and (4) setting protection levels that are relative to the existing spatial coverage of remaining old growth and the extent and impacts of stressors driving old growth decline.

Welcome to Volume 51.2 of The Australian Journal of Indigenous Education. This is our second volume since our shift to being an open access journal. We are very pleased that AJIE has recently been accepted into the Directory of Open Access Journals and was awarded the DOAJ Seal for best practice in open access. DOAJ is an extensive index of diverse open access journals internationally and their aim is to increase the visibility, accessibility, reputation, usage and impact of quality, peer-reviewed, open access scholarly research journals globally. We are also excited that since the journal became open access in August 2022 there has been over 20,000 views of whole articles and over 24,000 views of abstracts on our new open access website. This is a larger volume of AJIE than usual, and we thank the authors and reviewers for their contributions. You play a vital role in ensuring the quality of the journal. We would also like to thank Michelle James for her detailed and astute copyediting for the journal. Special thanks to Senior Publications Officer Sonia Nitchell for her continuing work on importing the large AJIE archive onto the new platform. The first suite of articles in this volume focuses on the early childhood context with articles by Locke and Webb providing us with insights into the inclusion of Indigenous knowledges and perspectives in early education and care settings in the first paper and how Aboriginal educators integrated their cultural knowledge and experiences to develop Aboriginal children’s skills in the second. In a South Saami context, Kroik explores preschool teachers’ identity as linguistic role models by means of analysing their own descriptions of language learning. In Canada, Schroeder et al. demonstrate the importance of making curricula relevant to Indigenous children by including content that is culturally relevant and developmentally appropriate. The interrelationships between language, identity and culture from Māori kaumātua (elders both male and female) and whānau (parents and extended family members) from Aotearoa (New Zealand) is explored by Berryman et al. The second suite of papers take us into the context of schools. Johnson and Flückiger explore the important role for Aboriginal Education Workers in remote Australian communities, while Goodall et al. draw on student and teacher memories of the early days of Indigenous-controlled adult education provider Tranby Aboriginal Co-operative Ltd. The paper by Guenther et al. analyses My School data for Very Remote Aboriginal schools, showing how the Remote School Attendance Strategy school attendance results compare with similar non-Remote School Attendance Strategy schools. Their findings raise ethical and accountability concerns about the Remote School Attendance Strategy, which they argue lacks evidence of attendance improvement, and which potentially causes harm. Whitau et al. also examine school attendance but in relation to Western Australian Aboriginal young women and the links between racism, teacher–student relationships, and peer connectedness, and how these were related to participant attendance and engagement at school. Moore et al. discuss the Whole of Community Engagement (WCE) initiative, which sought to identify barriers and enablers in Aboriginal students’ pathways to post-compulsory education in six remote communities in Arnhem Land and central Australia. They describe the features that led them to characterise the initiative and the remote community and school context as intercultural and complex. Also in relation to the Whole of Community Engagement initiative, Moore et al. propose an intercultural perspective as a refinement to the both-ways approach to remote education. Osborne et al. focus on aspirations of students, their families and communities at Nyangatjatjara College an independent Aboriginal school distributed across three campuses in the southern region of the Northern Territory. Macdonald and Gringart present a new measurement instrument, the Multi-Dimensional Student Perceptions of School Questionnaire (MSPSQ), validated with a moderate-sized sample of Indigenous and non-Indigenous secondary students in Western Australia. The next suite of papers has an international focus with papers from Canada, Aotearoa (New Zealand), Brazil, and Tonga. Stavrou and Murphy explore tensions surrounding Indigenising school mathematics in a Western Canadian prairie province conducted with three Cree elementary school teachers while Denston et al. examine teachers’ perceptions and experiences of a collaborative case study to adapt a literacy approach originally designed for an Aotearoa (New Zealand) English-medium context. Ioris et al. explore the main trends and pending gaps related to indigenous education in Brazil while Fonua et al. shares the stories of 26 successful Tongan science learners who participated in talanoa (open discussion without an agenda) about their engagement, enjoyment, and success in secondary and university science education in Aotearoa (New Zealand). The final papers in this volume shift to the university context with Hogarth exploring a small pilot study conducted at a Queensland university examining how academics perceive the inclusion of Indigenous Knowledges within institutional and professional contexts and initial teacher education programs. Forsyth et al. speak to the importance of employing Indigenous methodologies when conducting Indigenous research to improve dental and medical health outcomes for Indigenous peoples. Hook and Jessen reflect on the contentious nature of non-Indigenous academics teaching Indigenous Studies and draw on student survey data to illustrate the conflict between their pedagogic practices, student expectations and the structural impediments to their teaching aims. Smith et al. also provide a personal reflection on the higher education context by discussing the need to have institutional conversations about coloniality, institutional racism and white fragility within tertiary institutions. The final paper in this volume by Gibbs et al. explores the relationships between racism, cultural resilience, and educational engagement and academic outcomes for Aboriginal tertiary students. They highlight that cultural resilience and support is critical to Aboriginal student success within universities. Racism continues to be particularly important to address because, as the 2022 Australian Reconciliation Barometer recently highlighted, experiences of racial prejudice have increased for Aboriginal and Torres Strait Islander people over the last two years and certainly there is much work needed to improve relationships between Indigenous and non-Indigenous people. We hope you enjoy reading the articles in this volume and hope the articles lead to further dialogue and discussion about Indigenous educational success both in Australia and internationally. Bronwyn Fredericks, Martin Nakata, and Katelyn Barney

This study determined the seasonal variability of free-living nematode communities structure (genus/family level) in organic shrimp farms ponds in Tam Giang commune, Nam Can district, Ca Mau province. Based on the result of SIMPER analysis, the average similarity in nematode communities at genus level was low with 30.75% and 30.81% (in dry and rainy season, respectively). However, the average dissimilarity between seasons was considerably high with 71.75%. Terschellingia, Daptonema, and Parodontophora were main genera contributing to similarity/dissimilarity between seasons. At the family level, results of SIMPER analysis showed that the average similarity was low with 37.12% and 39.02% (dry and rainy, respectively). Additionally, the average dissimilarity between dry and rainy season was fairly high with 64.06%. Specifically, four families such as Linhomoeidae, Xyalidae, Axonolaimidae, and Chromadoridae were the main families contributing to similarity/dissimilarity between seasons. Differences in sediment environmental characteristics between dry and rainy season are the reason for dissimilarity in the nematode communities structure. The high abundance of genus Terschellingia, Daptonema, Parodontophora may be indicative of organic enrichment conditions in shrimp pond sediment in both seasons. Nematodes with their rapid adaptation to changing environments can be used as a potential tool for bio-indicator. Keywords Bio-indicator, Ca Mau province, nematode communities, organic shrimp farms ponds, simper analysis References [1] Lin, F. Y., Vo, A. H., Phan, V. B., Nguyen, T. T., Bryla, D., Tran, C. T., ... & Robbins, J. B., The epidemiology of typhoid fever in the Dong Thap Province, Mekong Delta region of Vietnam, The American journal of tropical medicine and hygiene 62(5) (2000) 644-648.[2] Semprucci F, Moreno M, Sbrocca S, Rocchi M, AlbertelliG, Balsamo, M., The nematode assemblage as a tool for the assessment of marine ecological quality status: a case-study in the Central Adriatic Sea, Mediterranean Marine Science 14(1) (2013) 48-57.[3] Ngo, Q. X., Nguyen, N. C., Nguyen, D. T., & Vanreusel, A., Distribution pattern of free living nematode communities in the eight Mekong estuaries by seasonal factor, Journal of Vietnamese Environment 4(1) (2013) 28-33.[4] Heip, C., Vincx, M., Vranken G., The ecology of marine nematodes, Oceanography and Marine Biology: An Annual Review 23 (1985) 399-489.[5] Hodda, M., Nicholas, W.L., Nematode diversity and industrial pollution in the Hunter River Estuary, NSW, Australia, Marine Pollution Bulletin 17 (1986) 251-255.[6] Alongi D.M., Intertidal zonation and seasonality of meiobenthos in tropical mangrove estuaries, Marine Biology 95 (1987) 447-458.[7] Tudorancea, C., & Zullini, A., Associations and distribution of benthic nematodes in the Ethiopian Rift Valley lakes, Hydrobiologia, 179(1) (1989) 81-96.[8] Hodda M., Nicholas W.L., Production of meiofauna in an Australian estuary, Wetland 9 (1990) 41-48.[9] Beier, S., & Traunspurger, W., Seasonal distribution of free-living nematodes in the Körsch, a coarse-grained submountain carbonate stream in southwest Germany, Nematology 5(4) (2003) 481-504.[10] Hourston, M., Potter, I. C., Warwick, R. M., Valesini, F. J., & Clarke, K. R., Spatial and seasonal variations in the ecological characteristics of the free-living nematode assemblages in a large microtidal estuary, Estuarine, Coastal and Shelf Science 82(2) (2009) 309-322.[11] Tran, T.T., Pham, T.L., Nguyen, T., Ngo, X. Q., Relationship of free-lingving nematode communities to some environmental characteristics in the organic shrimp farms, Ca Mau province, Vietnam Journal of Science and Technology 56(5) (2018).[12] Tran, T. T., Nguyen, T. M. Y., Nguyen, T., Ngo, X. Q., Meiofauna in the mangrove–shrimp farms ponds, Ca Mau province, Vietnam Journal of Science and Technology 55(3) (2017) 271.[13] El Hag E. A., Food and food selection of the Penaeid prawn Penaeus monodon (Fabricius), In Limnology and Marine Biology in the Sudan, Springer Netherlands, (1984) 213-217.[14] Chong V. C., Sasekumar A., Food and feeding habits of the white prawn Penaeus merguiensis, Marine ecology progress series 5 (20) (1981) 185-191.[15] Nguyen Thi My Yen, Tran Thanh Thai, Nguyen Tan Duc, Ngo Xuan Quang, Free living nematode communities as fundamental food for shrimps in the ecological - model of mangrove - shrimp farming ponds, Nam Can district, Ca Mau province, Vietnam Journal of Biotechnology, 16(3) (2018), 581 -588.[16] Clarke, K.R. and Gorley, R.N., PRIMER v6: User Manual/Tutorial PRIMER-E: Plymouth (2006).[17] Ingels, J., Tchesunov, A. V. and Vanreusel, A., Meiofauna in the Gollum Channels and the Whittard Canyon, Celtic Margin—how local environmental conditions shape nematode structure and function, PLoS One 6(5) (2011) e20094.[18] Cai, L., Fu, S., Yang, J. and Zhou, X., Distribution of meiofaunal abundance in relation to environmental factors in Beibu Gulf, South China Sea, Acta Oceanologica Sinica 31(6) (2012) 92-103.[19] Ngo, X. Q., Smol, N. and Vanreusel, A., The meiofauna distribution in correlation with environmental characteristics in 5 Mekong estuaries, Vietnam, Cahiers de Biologie Marine 54 (2013) 71 -83.[20] Górska, B., Grzelak, K., Kotwicki, L., Hasemann, C., Schewe, I., Soltwedel, T. and W łodarska-Kowalczuk, M., Bathymetric variations in vertical distribution patterns of meiofauna in the surface sediments of the deep Arctic ocean (HAUSGARTEN, Fram strait), Deep Sea Research Part I: Oceanographic Research 91 (2014) 36-49.[21] Mueller, M., Pander, J., & Geist, J., The effects of weirs on structural stream habitat and biological communities, Journal of Applied Ecology 48(6) (2011) 1450-1461.[22] Schratzberger, M., Warr, K., Rogers, S. I., Patterns of nematode populations in the southwestern North Sea and their link to other components of the benthic fauna, Journal of Sea Research 55 (2006) 113–127.[23] Moreno, M., Albertelli, G., and Fabiano, M., Nematode response to metal, PAHs and organic enrichment in tourist marinas of the mediterranean sea, Marine Pollution Bulletin 58(8) (2009) 1192-1201.[24] Alves, A. S., Adão, H., Ferrero, T. J., Marques, J. C., Costa, M. J., & Patrício, J., Benthic meiofauna as indicator of ecological changes in estuarine ecosystems: the use of nematodes in ecological quality assessment, Ecological Indicators 24 (2013) 462-475.[25] Moreno, M., Semprucci, F., Vezzulli, L., Balsamo, M., Fabiano, M., & Albertelli, G., The use of nematodes in assessing ecological quality status in the Mediterranean (2) (2011) 328-336.