Academic literature on the topic 'Pasture research – South Australia'

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Journal articles on the topic "Pasture research – South Australia"

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Eyles, Alieta, Garth Coghlan, Marcus Hardie, Mark Hovenden, and Kerry Bridle. "Soil carbon sequestration in cool-temperate dryland pastures: mechanisms and management options." Soil Research 53, no. 4 (2015): 349. http://dx.doi.org/10.1071/sr14062.

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Permanent pastures, which include sown, native and naturalised pastures, account for 4.3 Mha (56%) of the national land use in Australia. Given their extent, pastures are of great interest with respect to their potential to influence national carbon (C) budgets and CO2 mitigation. Increasing soil organic C (SOC) mitigates greenhouse gases while providing other benefits such as pasture productivity, soil health and ecosystem services. Several management approaches have been recommended to increase C sequestration in pasture-based systems; however, results have proved variable and often contradictory between sites and years. Here, we present an overview of the processes and mechanisms responsible for C sequestration in permanent pastures. In addition, we discuss the merits of traditional and emerging pasture-management practices for increasing SOC in pastures, with a focus on dryland pasture systems of south-eastern Australia. We conclude by summarising the knowledge gaps and research priorities for soil C-sequestration research in dryland pastures. Our review confirms that soils under a range of pasture types have considerable potential for sequestration of atmospheric CO2 in Australia, and that the magnitude of this potential can be greatly modified by pasture-management practices. Although the shortage of long-term studies under Australian conditions limits our ability to predict the potential of various management approaches to sequester soil C, our review indicates that prevention of erosion through maintenance of groundcover and adoption of options that promote deep C sequestration are likely to confer broad-scale maintenance or increases in SOC in pasture soils over a decade or longer. We acknowledge that the evidence is limited; therefore, confidence in the recommended practices in different locations and climates is largely unknown.
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Mitchell, M. L., M. R. McCaskill, and R. D. Armstrong. "Phosphorus fertiliser management for pastures based on native grasses in south-eastern Australia." Crop and Pasture Science 70, no. 12 (2019): 1044. http://dx.doi.org/10.1071/cp19217.

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Approximately 3.1 Mha (22%) of the agricultural area of south-eastern Australia can be classified as native pasture. There is the assumption that, owing to the widespread occurrence of low-fertility soils in Australia, native grass species do not respond to increased phosphorus (P) fertility. Currently, there are no industry recommendations of target soil-test P values for native-grass-based pastures. This paper reviews the responses of perennial native pasture species endemic to south-eastern Australia to P application in controlled environments, surveys, replicated experiments and paired-paddock trials. Eighty-seven site-years of trial data where different levels of P were applied, conducted over the last two decades, on native-based pastures in south-eastern Australia are reviewed. Data indicate that application of P fertilisers to native grass pastures can increase dry matter (DM) production and maintain pasture stability. However, minimum targets for herbage mass (800 kg DM/ha) and groundcover (80%) are required to ensure persistence of perennial native grasses. Stocking rates also need to match carrying capacity of the pasture. Based on previous research, we recommend target soil-test (Olsen; 0–10 cm) P levels for fertility-tolerant native grass pastures, based on Microlaena stipoides, Rytidosperma caespitosum, R. fulvum, R. richardsonii, R. duttonianum and R. racemosum, of 10–13 mg/kg, whereas for pastures based on fertility-intolerant species such as Themeda triandra, lower levels of <6 mg/kg are required to ensure botanical stability.
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Ward, P. R., R. A. Lawes, and D. Ferris. "Soil-water dynamics in a pasture-cropping system." Crop and Pasture Science 65, no. 10 (2014): 1016. http://dx.doi.org/10.1071/cp14046.

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Pasture cropping is a farming system in which annual crops are sown into established perennial pastures. It may provide environmental benefits such as increased groundcover and reduced deep drainage, while allowing traditional crop production in the Mediterranean-style climate of south-western Australia. In this research, we investigated deep drainage and the temporal patterns of water use by a subtropical perennial grass, annual crops, and a pasture-cropping system over a 4-year period. Both the pasture and pasture-cropped treatments reduced deep drainage significantly, by ~50 mm compared with the crop treatment. Competition between the pasture and crop components altered patterns of average daily water use, the pasture-cropped treatment having the highest water use for July, August and September. Consequently, water-use efficiency for grain production was lower in the pasture-cropped plots. This was offset by pasture production, so that over a full 12-month period, water-use efficiency for biomass production was generally greater for the pasture-cropped plots than for either the pasture or crop monocultures. Pasture cropping may be a viable way of generating sustainable economic returns from both crop and pasture production on sandy soils of south-western Australia.
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Kemp, D. R., and P. M. Dowling. "Towards sustainable temperate perennial pastures." Australian Journal of Experimental Agriculture 40, no. 2 (2000): 125. http://dx.doi.org/10.1071/ea98003.

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Naturalised pastures across the higher rainfall (>600 mm) perennial pasture zone of south-eastern Australia are less productive than they were, while sown pastures fail to maintain their initial levels of production. Several factors have contributed to this, including lack of knowledge of suitable grazing practices, weed invasion, increasing acid soils, rising water tables and poor management practices during droughts. A key issue in each case is the decline in perennial grass species which is both a cause and effect of the decline in productivity and sustainability of these ecosystems. This paper introduces a volume devoted to the largest collaborative study done to evaluate tactics for better grazing management and to improve the sustainability of perennial pasture ecosystems. Grazing practices to manage the composition of pastures have been largely neglected in pasture research, but are an important first step in improving pasture sustainability. This paper also outlines a new, open communal grazing experimental design which was developed and used across 24 sites on farms in New South Wales, Victoria, Tasmania and South Australia, to evaluate tactics for grazing management. The general aim across these experiments was to maintain (if adequate) or enhance (if degraded), the proportion of desirable perennial grasses in the sward to achieve more sustainable pastures. The results will provide the basis for building more sustainable grazing systems.
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McCormick, Jeff I., Richard C. Hayes, Guangdi D. Li, and Mark R. Norton. "A review of pasture establishment by undersowing with special reference to the mixed farming zone of south-eastern Australia." Crop and Pasture Science 65, no. 10 (2014): 956. http://dx.doi.org/10.1071/cp14049.

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Pastures continue to provide essential functions for the mixed-farming zone in south-eastern Australia, where crop and livestock production are integral parts of most farms. Establishment of pastures in this zone needs to be low-cost and preferably with minimal risk. Pastures are typically sown either directly or in combination with a cover-crop (also called undersowing; the practice of sowing pasture seed simultaneously with a crop that is intended for grain production in the first year), so that the establishment cost is offset by income from the sale of grain. The purposes of this review are to: (i) draw together the literature on undersowing pastures, including studies conducted since the previous review in 1965; (ii) understand why there is a discrepancy between research results that generally do not support the practice of undersowing pastures, whereas farmer preference appears to establish pastures under a cover-crop; and (iii) identify critical needs for further research to aid in making decisions about pasture establishment on-farm. Published and unpublished data from the Australian wheatbelt on establishing pastures by undersowing was examined from the 1920s to the present and included seven publications for perennial species from 26 different experiments. Eight publications addressing establishment of annual species were available from 30 experiments. Many trials appear to have been conducted without being analysed or published. A further 16 international publications were reviewed. Generally, cover-crops reduced annual pasture seedset and perennial density even though the pastures established under the cover-cropping were commonly deemed ‘satisfactory’ by the authors. Pasture establishment was improved by reducing the sowing rate of the cover-crop and/or sowing on alternate rows. Technological change during the past 25 years has led to different configurations of seeding machinery, increased use of herbicides and longer cropping phases. Conclusions previously reached may therefore need to be re-assessed. No data published quantified the risks associated with undersowing on a seasonal and regional basis to determine the probability of success, and there are insufficient data to model the complex physiological interactions between crop and pasture, with most experiments focused on basic agronomic parameters. Furthermore, long-term effects of establishment method on total pasture biomass production and subsequent effects on following crops have rarely been demonstrated, because of the short time-frames in which most experiments have been conducted. Farmers in the mixed-farming zone still prefer to establish pastures under a cover-crop because of perceived financial benefit of the practice. This review identifies substantial research gaps to be addressed to improve pasture-establishment decisions.
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Jones, Roger A. C. "Virus diseases of perennial pasture legumes in Australia: incidences, losses, epidemiology, and management." Crop and Pasture Science 64, no. 3 (2013): 199. http://dx.doi.org/10.1071/cp13108.

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This article reviews current knowledge for Australia over the occurrence, losses caused, epidemiology, and management of virus diseases of perennial pasture legumes. Currently, 24 viruses have been found infecting perennial pasture legumes, and one or more viruses have been detected in 21 of these species. These viruses are transmitted by insect vectors, non-persistently or persistently, by contact or via seed. Their modes of transmission are critical factors determining their incidences within pastures in different climatic zones. Large-scale national or state surveys of lucerne (alfalfa) (Medicago sativa) and white clover (Trifolium repens) pastures revealed that some viruses reach high incidences. Infection with Alfalfa mosaic virus (AMV) was very widespread in lucerne stands, and with AMV and White clover mosaic virus (WClMV) in white clover pastures. Several other viruses are potentially important in pastures in these and other perennial temperate/Mediterranean pasture species. Data demonstrating herbage yield losses, diminished pasture persistence, and impaired nitrogen fixation/nodule function are available for AMV in lucerne, and AMV, WClMV, and Clover yellow vein virus in white clover. Integrated Disease Management approaches involving phytosanitary, cultural, chemical, and host resistance control measures are available to minimise virus infection in lucerne and white clover. Research on virus diseases of perennial tropical–subtropical pasture legumes has focussed almost entirely on virus identification, and information on their incidences in pastures, the losses they cause, and how to control them is lacking. Overall, viruses of perennial pasture legumes are least studied in South Australia and the Northern Territory. These and other critical research and development gaps that need addressing are identified.
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Bolan, NS, RE White, and MJ Hedley. "A review of the use of phosphate rocks as fertilizers for direct application in Australia and New Zealand." Australian Journal of Experimental Agriculture 30, no. 2 (1990): 297. http://dx.doi.org/10.1071/ea9900297.

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Field trials in New Zealand have shown that reactive phosphate rocks (RPRs) can be as effective as soluble P fertilisers, per kg of P applied, on permanent pastures that have a soil pH<6.0 (in water) and a mean annual rainfall >800 mm. Whereas RPRs such as North Carolina, Sechura, Gafsa and Chatham Rise have been evaluated on permanent pastures in New Zealand, most Australian field trials have examined unreactive PRs such as Christmas Island A and C grade, Nauru and Duchess, using annual plant species. Only in recent experiments has an RPR, North Carolina, been examined. Except on the highly leached sands in southern and south-western Australia, both reactive and unreactive PRs have shown a low effectiveness relative to superphosphate. In addition to chemical reactivity, other factors may contribute to the difference in the observed agronomic effectiveness of PRs in Australia and New Zealand. Generally, PRs have been evaluated on soils of lower pH, higher pH buffering capacity (as measured by titratable acidity) and higher P status in New Zealand than in Australia. Rainfall is more evenly distributed throughout the year on New Zealand pastures than in Australia where the soil surface dries out between rainfall events. Dry conditions reduce the rate at which soil acid diffuses to a PR granule and dissolution products diffuse away. Even when pH and soil moisture are favourable, the release of P from PR is slow and more suited to permanent pasture (i.e. the conditions usually used to evaluate PRs in New Zealand) than to the annual pastures or crops used in most Australian trials. Based on the criteria of soil pH<6.0 and mean annual rainfall >800 mm, it is estimated that the potentially suitable area for RPRs on pasture in New Zealand is about 8 million ha. Extending this analysis to Australia, but excluding the seasonal rainfall areas of northern and south-western Australia, the potentially suitable area is about 13 million ha. In New Zealand, many of the soils in the North and South Islands satisfy both the pH and rainfall criteria. However, suitable areas in Australia are confined mainly to the coastal and tableland areas of New South Wales and eastern Victoria, and within these areas the actual effectiveness of RPR will depend markedly on soil management and the distribution of annual rainfall. Further research on RPR use should be focused on these areas.
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Moore, G. A., P. Sanford, P. J. Dolling, and D. Real. "The challenges of developing resilient perennial pastures for a Mediterranean environment – a review for Western Australia." Crop and Pasture Science 72, no. 9 (2021): 613. http://dx.doi.org/10.1071/cp20304.

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Perennial pastures are the dominant feedbase in many regions of the world, and offer several advantages when compared with an annual pasture system. In Western Australia (WA) there has been a concerted effort over seven decades to develop new perennial pasture options and expand the adoption of suitable species. The agricultural region of WA (i.e. south-western Australia) is characterised by a Mediterranean climate where the 5–7 month summer drought has proved a considerable challenge with only a small number of the many promising species being adopted commercially. Research, development, and extension have covered a wide range of herbaceous perennial legumes, leguminous and native shrubs, herbs, and temperate and warm season grasses. This paper reviews the literature to determine whether a perennial pasture must satisfy the following criteria to be successful and widely adopted in south-western Australia: (i) sourced from a similar Mediterranean environment and adapted to the target soils; (ii) have a relative advantage over the annual-based system it replaces; (iii) a robust management package; and (iv) a viable seed supply. The findings of this review highlight that perennial pastures must indeed satisfy multiple criteria to be commercially successful. Notably, the requirement for the source of the germplasm to have a good match between climate and soils is less clear because some of the commercially successful species come from diverse environments. We conclude with some key learnings for future perennial pasture development as climate change intensifies the research challenge and the drive for producers to adapt.
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Michalk, D. L., P. M. Dowling, D. R. Kemp, W. McG King, I. J. Packer, P. J. Holst, R. E. Jones, et al. "Sustainable grazing systems for the Central Tablelands, New South Wales." Australian Journal of Experimental Agriculture 43, no. 8 (2003): 861. http://dx.doi.org/10.1071/ea02180.

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Pasture degradation is a major issue in the high rainfall zone (>600 mm) of temperate Australia. Characterised by a decline in the perennial grass component, this degradation is responsible for reduced livestock production and implicated in environmental problems, such as dryland salinity, through changed water-use patterns. This paper reports on a multi-disciplinary research program conducted at Carcoar in central New South Wales, one of 6 sites that comprised the Sustainable Grazing Systems National Experiment. The aim of the experiment was to develop more profitable and sustainable pasture systems by evaluating the impact of changes in the perennial grass component on animal production and water-use patterns. Tactical management strategies were evaluated on naturalised and sown perennial grass pastures and on chicory (Cichorium intybus), using a Merino ewe-based first cross lamb enterprise. Data presented showed that grazing deferment over summer, combined with reduced stocking rate, increased perenniality and reduced annual grass weeds compared with continuous grazing. Livestock performance, however, did not always follow trends in available perennial herbage mass. Naturalised and sown pastures were suitable for raising prime lambs, but only chicory had the capacity to finish lambs to market specification without supplementation. With respect to water-use patterns, sown perennial pastures were more successful than naturalised pastures in reducing leakage of water from the root zone, although this seemed to be related mostly to the abundance of the perennial grass in the pasture. From a sustainability perspective, continuously grazed pastures generated higher net cash flows, but had negative environmental impacts, whereas tactically grazed pastures had positive on- and off-farm impacts but lower net cash flows. The implications of these findings for incorporation into future management strategies for sustainable production in high rainfall environments are discussed.
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Waller, R. A., and P. W. G. Sale. "Persistence and productivity of perennial ryegrass in sheep pastures in south-western Victoria: a review." Australian Journal of Experimental Agriculture 41, no. 1 (2001): 117. http://dx.doi.org/10.1071/ea00049.

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Loss of perennial ryegrass (Lolium perenne L.) from the pasture within several years of sowing is a common problem in the higher rainfall (550–750 mm annual rainfall), summer-dry regions of south-eastern Australia. This pasture grass came to Australia from northern Europe, where it mostly grows from spring to autumn under mild climatic conditions. In contrast, the summers are generally much drier and hotter in this region of south-eastern Australia. This ‘mismatch’ between genotype and environment may be the fundamental reason for the poor persistence. There is hope that the recently released cultivars, Fitzroy and Avalon, selected and developed from naturalised ryegrass pastures in south-eastern Australia for improved winter growth and persistence will improve the performance of perennial ryegrass in the region. Soon-to-be released cultivars, developed from Mediterranean germplasm, may also bridge the climatic gap between where perennial ryegrass originated and where it is grown in south-eastern Australia. Other factors that influence perennial ryegrass persistence and productivity can be managed to some extent by the landholder. Nutrient status of the soil is important since perennial ryegrass performance improves relative to many other pasture species with increasing nitrogen and phosphorus supply. It appears that high soil exchangeable aluminium levels are also reducing ryegrass performance in parts of the region. The use of lime may resolve problems with high aluminium levels. Weeds that compete with perennial ryegrass become prevalent where bare patches occur in the pasture; they have the opportunity to invade pastures at the opening rains each year. Maintaining some herbage cover over summer and autumn should reduce weed establishment. Diseases of ryegrass are best managed by using resistant cultivars. Insect pests may be best managed by understanding and monitoring their biology to ensure timely application of pesticides and by manipulating herbage mass to alter feed sources and habitat. Grazing management has potential to improve perennial ryegrass performance as frequency and intensity of defoliation affect dry matter production and have been linked to ryegrass persistence, particularly under moisture deficit and high temperature stress. There is some disagreement as to the merit of rotational stocking with sheep, since the results of grazing experiments vary markedly depending on the rotational strategy used, climate, timing of the opening rains, stock class and supplementary feeding policy. We conclude that flexibility of grazing management strategies is important. These strategies should be able to be varied during the year depending on climatic conditions, herbage mass, and plant physiology and stock requirements. Two grazing strategies that show potential are a short rest from grazing the pasture at the opening rains until the pasture has gained some leaf area, in years when the opening rains are late. The second strategy is to allow ryegrass to flower late in the season, preventing new vegetative growth, and perhaps allowing for tiller buds to be preserved in a dormant state over the summer. An extension of this strategy would be to delay grazing until after the ryegrass seed heads have matured and seed has shed from the inflorescences. This has the potential to increase ryegrass density in the following growing season from seedling recruitment. A number of research opportunities have been identified from this review for improving ryegrass persistence. One area would be to investigate the potential for using grazing management to allow late development of ryegrass seed heads to preserve tiller buds in a dormant state over the summer. Another option is to investigate the potential, and subsequently develop grazing procedures, to allow seed maturation and recruitment of ryegrass seedlings after the autumn rains.
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Dissertations / Theses on the topic "Pasture research – South Australia"

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Maddern, Rowan John. "Low water-soluble superphosphate fertiliser for pasture production in south-western Australia." Thesis, Curtin University, 2016. http://hdl.handle.net/20.500.11937/2242.

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Single superphosphate is derived from chemically treating rock phosphate into relative proportions of monobasic, dibasic and tribasic calcium phosphate to produce a commonly used source of phosphorus fertiliser for pasture systems. The leaching of phosphorus on susceptible soil types contributes to eutrophication and environmental damage. By modifying the chemistry of single superphosphate to match a soils phosphorus binding index and rainfall conditions, pasture dry matter yield can be maintained and leaching of phosphorus significantly reduced.
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Sounness, Marcus Neil. "Alternative grazing systems and pasture types for the South West of Western Australia : a bio-economic analysis." University of Western Australia. School of Agricultural and Resource Economics, 2005. http://theses.library.uwa.edu.au/adt-WU2005.0054.

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Alternative grazing systems and pasture types for wool production in the south west of Western Australia were analysed using bio-economic modelling techniques in order to determine their relative productivity and profitability. After reviewing the experimental and modelling literature on perennial pastures and grazing systems, seven case studies of farmers were conducted in order to investigate the practical application of innovative grazing systems and use of perennial pastures. Together these case studies provided information for identifying relevant variables and for calibrating the modelling work which followed. The core of the work lies in a bio-economic model for investigating the comparative value of the three grazing systems and two pasture families mentioned above. A baseline scenario using currently available and reliable scientific data provides baseline results, after which a number of sensitivity analyses provide further insights using variations of four key parameters: persistence, heterogeneity, water soluble carbohydrates, and increased losses. Results show that perennial pastures are in the studied region more profitable than annual pastures. Under current baseline conditions, continuous grazing with perennial pastures is the most profitable enterprise, but this superiority is not robust under parameter variations defined by other scenarios. The more robust solution in terms of enterprise profitability is cell grazing with perennial pastures. The results indicate that intensive grazing systems such as cell grazing have the potential to substantially increase the profitability of grazing operations on perennial pasture. This result is an encouraging one in light of its implications for water uptake and salinity control. It means that economics and land care can go hand in hand, rather than be competitive. It is to be noted that it is the choice of the grazing system in combination with the pasture species, rather then the pasture species itself, that allows for such complementarity between economics and sustainable land use. This research shows that if farmers adopt practices such as cell grazing they may be able to increase the area that they can profitably plant to perennial pasture thus reducing the impacts of dryland salinity. This finding is consistent with the findings of the case studies where the farmers perceived that, provided grazing was planned, increasing the intensity of their grazing management and the perenniallity of their pastures would result in an increase in the profitability of their grazing operation. As a result this research helps to bridge a gap which has existed in this area of research, between the results of scientific research and those reported in practice.
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Frost, William E. "The ecology of cereal rust mite Abacarus hystrix (Nalepa) in irrigated perennial dairy pastures in South Australia /." Title page, contents and summary only, 1995. http://web4.library.adelaide.edu.au/theses/09PH/09phf9398.pdf.

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Crawford, Michael Cameron. "Quantification of the belowground inputs of organic carbon by the annual pasture legume barrel medic (Medicago truncatula Gaertn.)." Title page, contents and abstract only, 1997. http://web4.library.adelaide.edu.au/theses/09PH/09phc8988.pdf.

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Bibliography: leaves 164-193. This study aims to quantify the belowground input of organic carbon by barrel medic using techniques that account for root death and decomposition as well as root secretion and exudation. It also investigates the effect of defoliation on carbon allocation within the plant so as to determine the potential for optimising carbon input to the soil through grazing management.
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McLaughlin, Michael John. "Phosphorus cycling in soil under wheat-pasture rotations /." Title page, contents and summary only, 1986. http://web4.library.adelaide.edu.au/theses/09PH/09phm1615.pdf.

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Dalby, Paul Reginald. "Competition between earthworms in high rainfall pastures in the Mt. Lofty Ranges, South Australia." Title page, contents and summary only, 1996. http://web4.library.adelaide.edu.au/theses/09PH/09phd137.pdf.

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Copy of author's previously published work inserted. Bibliography: leaves 261-306. The objectives of the project were: i. to determine whether there are competitive interactions between Aporrectodea trapezoides and A. caliginosa and A. rosea.--ii. to investigate compeditive interactions between A. calignosa, Microscolex dubius and A. trapezoides.--iii . to determine the likely impact of A. longa on soil fauna, especially the native earthworm, Gemascolex lateralis, in native ecosystems.
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Bates, Ian George Bindon. ""Necessity's inventions" : a research project into South Australian inventors and their inventions from 1836 to 1886." Title page, contents and abstract only, 2000. http://web4.library.adelaide.edu.au/theses/09ARM/09armb3924.pdf.

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"August 2000" Includes bibliographical references (leaves 115-118) and index of inventors 1. Introduction, overview of years 1836-1886 -- 2. The Patent Act, no. 18, of 1859 -- 3. The Provisional Registration of Patents Act, no. 3, of 1875 -- 4. The Patent Act, no. 78, of 1877 -- 5. Numerical list of inventions
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Brownlow, Marcus D. "Water regime and the aquatic vegetation of Bool Lagoon, South Australia /." Title page, table of contents and summary only, 1997. http://web4.library.adelaide.edu.au/theses/09PH/09phb8852.pdf.

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Mullett, Trudi, and mikewood@deakin edu au. "The ecology of Pittosporum undulatum Vent. (Puttosporaceae) an environmental weed in south east Australia." Deakin University. School of Ecology, 1999. http://tux.lib.deakin.edu.au./adt-VDU/public/adt-VDU20050615.150347.

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Pittosporum undulatum Vent. (Sweet Pittosporum) is a densely foliaged tall shrub or small tree, native to the wet forests of south east Australia, This species now functions as a serious environmental weed in a range of habitats in Australia and on other continents and islands throughout the temperate, sub-tropical and tropical zones. This study investigated some of the ecological causes and consequences of P. undulatum invasion across a range of habitat types in south east Australia. Key aspects of P. undulatum biology and ecology investigated in the current study include; patterns of morphological variation across the range of habitats occupied (as a measure of the species’ plasticity), dispersal ecology and seed germinability, population structure and spatial pattern, community relationships and the ecological impacts of invasion. Phenotypic plasticity is considerable in P. undulatum. No clear patterns of geographic variation emerged from a study of leaf morphological attributes across the current range of this species on mainland south east Australia. The pattern of morphological variation is particularly complex in Victoria, where the invasion of this species is most advanced. The species’ adaptability to a range of environments and environmental conditions will likely promote further range expansion. The abundant winter fruit crop produced by functionally female P. undulatum plants attracts a suite of generalist opportunistic frugivores, which feed on P. undulatum fruits and seeds at various stages of fruit dehiscence, thereby enhancing dispersal opportunities for this species. P. undulatum seed collected from natural and invasive populations, at two stages of fruit maturity and from the scats and pellets of dispersal agents, displayed high germinability. European Blackbirds and Pied Currawongs are implicated as the main avian dispersal agents of P undulatum in south east Australia. The broader ecological implications of developing relationships between invasive fleshy-fruited bird-dispersed plant species and adaptive frugivores are likely to be considerable. The distribution of P. undulatutn seedlings was significantly negatively correlated with adult conspecifics and significantly positively correlated with trees and shrubs of other genera. This pattern reflects the importance of both firugivorous dispersal agents and the species’ germination and establishment requirements, in shaping the contagious distribution pattern typical of this species. These analyses suggest that recruitment opportunities for conspecific seedlings are limited beneath the canopy of adult conspecifics. Densities of P. undulatum were on average, 2.7 times higher in invaded populations, compared to the natural populations sampled. A male-bias was evident in all populations and no relationships between reproductive activity and the density of seedlings and juveniles were evident. Invading populations of P. undulatum impose substantial changes on ecosystem-level properties and functions. Mean species richness and cover-abundance declined notably once P. undulatum cover-abundance exceeded 20% at the invaded sites and 60% at the natural sites sampled. The natural communities sampled displayed comparatively greater resilience to the competitive effects of P. undulatum, but community attributes were affected at high densities and cover-abundance of this species. The cover-abundance of herbs and grasses declined most substantially with increasing P. undulatum at invaded sites, whereas, at the natural sites sampled, the species’ structural analogues appeared to be most affected by increasing P. undulatum cover-abundance. This study has demonstrated that the ecological consequences of P. undulatum population expansion are substantial and contribute to changes in the composition and successional trajectory of affected communities. These processes ultimately lead to the loss and simplification of biodiversity values and the homogenisation of affected habitats. P. undulatum has the potential to emerge as one of south east Australia's most serious environmental weed species.
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Wacey, David. "Microbial mediation of dolomite formation : geochemical and microbial investigations in the Coorong region of South Australia." Thesis, University of Oxford, 2002. http://ora.ox.ac.uk/objects/uuid:cf6d606d-7304-4610-80db-a362745bc1f9.

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Dolomite is shown to precipitate in laboratory experiments that simulate the microbiogeochemical conditions prevailing during the later stages of evaporation in the ephemeral, hypersaline, dolomitic lakes of the Coorong region, South Australia, where microbially-dominated ecosystems support intensive bacterial sulphate reduction. Analyses of numerous lake- and pore-water samples from Coorong lakes document rapid geochemical changes with depth and time. Extremely high sulphate and magnesium ion concentrations occur in lake waters and decline rapidly with depth in pore waters through the sulphate reduction zone. Ultimately sulphate ions are totally consumed but magnesium ions are replenished, presumably from desiccated cyanobacterial sheaths. Carbonate concentrations in pore waters reach levels up to 100 times those of normal seawater. Most-probable-number counts show that large populations of sulphate-reducing bacteria are present in sediment cores, while sulphur isotope analysis of residual lakewater sulphate indicates that microbial fractionation takes place in all the study lakes. Microbes from the lakes were cultured in the laboratory under anoxic conditions and viable populations were injected into vials containing a sterilised granular substrate immersed in a simulated lakewater solution. Falls in the levels of sulphate ion concentration and rising pH in selected vials were interpreted as due to active bacterial sulphate reduction accompanied by increased concentrations of carbonate. After 1 month, subspherical nano-grains of dolomite were precipitated. This study proposes that bacterial sulphate reduction overcomes kinetic constraints on dolomite formation by removing the sulphate ions and releasing magnesium and calcium ions from neutral ion pairs, and by generating elevated carbonate concentrations in a hypersaline and strongly electrolytic solution. Microbiogeochemical and isotopic data therefore demonstrates that bacterial sulphate reduction controls dolomite precipitation in both the laboratory experiments and the lake sediments. It is proposed that dolomite formation through bacterial sulphate reduction provides a process analogue that is applicable to thick platformal dolostones of the past, where benthic microbial communities were the dominant colonisers of the shallow marine environment.
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Books on the topic "Pasture research – South Australia"

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Common dung beetles in pastures of South-eastern Australia. [Canberra]: CSIRO Australia, Division of Entomology, 1990.

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Draper, Laurence D. More than just a job: My life and career from junior constable to commissioner of police. West Lakes, S. Aust: Seaview Press, 2007.

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Australia), Qualitative Approaches in Educational Research (Conference) (1994 Flinders University of South. Conference proceedings for the mini-conference Qualitative Approaches in Educational Research, The Flinders University of South Australia, 5 August 1994. [s.l.?: [Flinders University of South Australia?], 1994.

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Colwell, James B. Rig seismic research cruise 13: Structure and stratigraphy of the northeast Gippsland Basin and southern New South Wales margin : initial report. Canberra: Australian Govt. Pub. Service, 1987.

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Colwell, James B. Rig seismic research cruise 13: Structure and stratigraphy of the northeast Gippsland Basin and southern New South Wales margin : initial report. Canberra: Australian Government Publishing Service, 1987.

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Australian Society for Fish Biology. Symposium. ASFB2004: Symposium proceedings : national symposium on ecosystem research and the management of fish and fisheries, 19-24 September 2004, Adelaide, South Australia. Edited by Ward Tim M. Lyneham, A.C.T: Australian Society for Fish Biology, 2006.

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Faulks, Ian J., ed. Proceedings of the Australian Driver Trainers’ Association (NSW) Annual Conference, Friday 30 November 2007, Parramatta. Wahroonga, NSW Australia: Safety and Policy Analysis International, 2008.

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Boden Research Conference (1989 Thredbo Village, N.S.W.). Information processing in mammalian auditory and tactile systems: Proceedings of a Boden Research Conference, held in Thredbo, New South Wales, Australia, February 1-3, 1989. Edited by Rowe Mark and Aitkin Lindsay. New York: Wiley-Liss, 1990.

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Technologie, Karlsruher Institut für, Queensland University of Technology, and International Symposium on Water Landscapes (2009 : Sydney, N.S.W.), eds. Towards resilient water landscapes: Design research approaches from Europe and Australia : proceedings of the International Symposium on Water Landscapes at the University of New South Wales, Sydney, October 2009. Karlsruhe: KIT Scientific Pub., 2010.

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International Symposium on "Manganese in Soils and Plants" (1988 Waite Agricultural Research Institute). Manganese in soils and plants: Proceedings of the International Symposium on "Manganese in Soils and Plants" held at the Waite Agricultural Research Institute, the University of Adelaide, Glen Osmond, South Australia, August 22-26, 1988, as an Australian Bicentennial event. Dordrecht: Kluwer Academic, 1988.

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Book chapters on the topic "Pasture research – South Australia"

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Ransom, Kieran, and Lindsay Trapnell. "Improving Traditional Crop-Pasture Farming Systems with Lucerne South East Australia." In Rainfed Farming Systems, 841–59. Dordrecht: Springer Netherlands, 2011. http://dx.doi.org/10.1007/978-1-4020-9132-2_32.

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Armitage, Janet. "Desert Participants Guide the Research in Central Australia." In A Sociolinguistics of the South, 214–32. New York: Routledge, 2021. http://dx.doi.org/10.4324/9781315208916-18.

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Sarwal, Amit. "South Asian Diaspora in Australia: History, Research, and Literature." In South Asian Diaspora Narratives, 39–69. Singapore: Springer Singapore, 2017. http://dx.doi.org/10.1007/978-981-10-3629-3_2.

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Creese, R. G., and D. A. Breen. "Marine protected areas in New South Wales, Australia: challenges for research." In Conserving Marine Environments, 120–28. P.O. Box 20, Mosman NSW 2088, Australia: Royal Zoological Society of New South Wales, 2003. http://dx.doi.org/10.7882/fs.2003.014.

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Baum, Fran, Helen van Eyk, Colin MacDougall, and Carmel Williams. "Researching Health for All in South Australia: Reflections on Sustainability and Partnership." In Global Handbook of Health Promotion Research, Vol. 1, 759–80. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-97212-7_49.

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Hinkson, Melinda. "At the Edges of the Visual Culture of Exile: A Glimpse from South Australia." In Refiguring Techniques in Digital Visual Research, 93–104. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-61222-5_8.

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Slattery, J. F., W. J. Slattery, and B. M. Carmody. "Influence of Soil Chemical Characteristics on Medic Rhizobia in the Alkaline Soils of South Eastern Australia." In Highlights of Nitrogen Fixation Research, 243–49. Boston, MA: Springer US, 1999. http://dx.doi.org/10.1007/978-1-4615-4795-2_49.

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Macleod-Morgan, C. "Hemispheric Specificity and Hypnotizability: An Overview of Ongoing EEG Research in South Australia." In Modern Trends in Hypnosis, 169–79. Boston, MA: Springer US, 1985. http://dx.doi.org/10.1007/978-1-4684-4913-6_14.

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Glasby, Karen. "Embracing the Ethical Possibilities of Researching About Autistic Individuals’ Transition to Post-School Opportunities in South West Queensland, Australia." In Palgrave Studies in Education Research Methods, 127–41. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-48845-1_8.

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Gratchev, Ivan, Sinnappoo Ravindran, Dong Hyun Kim, Chen Cui, and Qianhao Tang. "Mechanisms of Shallow Rainfall-Induced Landslides from Australia: Insights into Field and Laboratory Investigations." In Progress in Landslide Research and Technology, Volume 1 Issue 1, 2022, 113–22. Cham: Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-16898-7_7.

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AbstractThis paper presents and discusses the mechanisms of rainfall-induced shallow landslides that commonly occur in South East Queensland (SEQ) and northern New South Wales (NSW), Australia. The major factors causing the formation of landslide mass such as geology, weathering, and rainfall patterns were discussed. Results from field surveys and laboratory testing of rock/soil material from landslide masses were presented, and relationships between the material strength and landslide occurrence were drawn. It was found that most of shallow slides were related to sandstone deposits. Those failures occurred on natural slopes and road cuts with the inclination of the failure plane being in the range of 35–45°. For natural slopes where the landslide mass mostly consisted of coarse-grained soil, the relationship between the soil strength and water content was established. In addition, the relationship between rainfall patterns such as intensity and duration, and the landslide occurrence was presented. Based on the data from field work and laboratory results including a series of flume tests, the mechanism of shallow landslides triggered by rainfall events was identified and discussed.
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Conference papers on the topic "Pasture research – South Australia"

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Setiawan, Bambang. "Seismic hazard analysis of the Adelaide region, South Australia." In INTERNATIONAL SYMPOSIUM ON EARTH HAZARD AND DISASTER MITIGATION (ISEDM) 2016: The 6th Annual Symposium on Earthquake and Related Geohazard Research for Disaster Risk Reduction. Author(s), 2017. http://dx.doi.org/10.1063/1.4987079.

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Gardeazabal Penuela, Luis Francisco, and Tanya Mackay. "UNIVERSITY OF SOUTH AUSTRALIA STUDENT UNION (USASA) ADVOCACY INTERNSHIP PROGRAM: STUDENT PARTNERSHIP IN ACTION." In 11th annual International Conference of Education, Research and Innovation. IATED, 2018. http://dx.doi.org/10.21125/iceri.2018.1379.

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Jianjun, Xiang, Hansen Alana, Pisaniello Dino, and Bi Peng. "0128 The economic burden of occupational heat illnesses in adelaide, south australia, 2001-2015." In Eliminating Occupational Disease: Translating Research into Action, EPICOH 2017, EPICOH 2017, 28–31 August 2017, Edinburgh, UK. BMJ Publishing Group Ltd, 2017. http://dx.doi.org/10.1136/oemed-2017-104636.100.

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Chant, I. J. "Overview of current radar land mine detection research at the Defence Science and Technology Organisation, Salisbury, South Australia,." In EUREL International Conference. The Detection of Abandoned Land Mines: A Humanitarian Imperative Seeking a Technical Solution. IEE, 1996. http://dx.doi.org/10.1049/cp:19961096.

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Rezaeian, N., L. Tang, and M. Hardie. "PSYCHOSOCIAL HAZARDS AND RISKS IN THE CONSTRUCTION INDUSTRY IN NEW SOUTH WALES, AUSTRALIA." In The 9th World Construction Symposium 2021. The Ceylon Institute of Builders - Sri Lanka, 2021. http://dx.doi.org/10.31705/wcs.2021.42.

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The construction industry faces many challenges, one of which is the difficult to define psychosocial influences. The construction sector has highly demanding employment conditions, long working hours and sometimes unfeasible terms of project execution. Psychosocial influences represent emotional as well as physiological characteristics which impact the immediate environment. Some construction personnel face psychosocial problems that can lead to depression or suicide. The research conducted in this paper focuses on the psychosocial status of personnel working in construction companies, in New South Wales (NSW), Australia. A questionnaire survey was conducted to investigate the psychosocial hazards observed in the construction industry in NSW. Practitioners in two private construction companies and one government department having construction project management experience in NSW were involved in the survey. The data analysis indicates that most workers experienced being pressured to stay back and work long hours. This led to workers being ‘very frequently’ tired. Regarding bullying, Respondents reported that the frequency of they experienced ‘exclusion or isolation from workplace activities’ was ‘monthly’. Being ‘Subjects of gossip or false, malicious rumours’ was reported as happening ‘weekly’ and ‘Humiliation through gestures, sarcasm, criticism or insults’ was said to happen ‘almost daily’. This study's findings indicate that construction projects could have unaddressed psychosocial hazards and risks, each of which may be a potential factor for accidents and occupational and psychological injuries. The data displayed from this research could help understand psychosocial hazards. Spreading awareness on the issue can hopefully be a step towards improving the mental health of construction workers while decreasing the overall suicide rate.
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Kender, Walter J. "Citrus Canker: Impacts of Research on Eradication and Control." In ASME 1986 Citrus Engineering Conference. American Society of Mechanical Engineers, 1986. http://dx.doi.org/10.1115/cec1986-3204.

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Citrus Bacterial Canker Disease (CBCD), caused by Xanthomonas campestris pv. citri, occurs in many citrus areas of the world. It has been reported in 40 different countries, on 5 continents (Asia, South Africa, Australia, South America and North America). Prior to the 1984 outbreak in Florida, the 4 known strains of the bacterium were A, B, C and Mexican bacterioses. Canker-A or Strain-A, endemic in Asia, was reported in China, India and Java in the early 1800’s, found in Japan in 1899 and in the Philippines in 1914. It affects most citrus species and hybrids. Grapefruit is especially susceptible. Strain-A was introduced into the United States from Japan on trifoliate orange seedlings in 1910. An eradication program was started in 1915 in Florida and the disease was eradicated in 1927. In South America, the Asiatic form was not found until 1957 in Brazil and 1972 in Argentina. In 1979, the A Strain broke out in the commercial citrus area of Sao Paulo State, Brazil. Paper published with permission.
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Collins, Julie. "Fresh Air and Sunshine: The Health Aspects of Sleepouts, Sunrooms, and Sundecks in South Australian Architecture of the 1930s." In The 38th Annual Conference of the Society of Architectural Historians Australia and New Zealand. online: SAHANZ, 2022. http://dx.doi.org/10.55939/a3989p6hza.

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This paper examines the development of infrastructures for outdoor advertising and debates over visual ‘oversaturation’ in the built environment. It begins with the boom in posters that came in the 19th century with a plethora of new manufactured goods and the attempts by civic officials to create structures that would extend cities’ available surface area for the placement of ads. It then charts the rise of building-top ‘sky signs,’ articulated billboards, kiosks, and digital media facades while detailing the policy initiatives meant to regulate these ad surfaces. This work builds on ongoing research into the development of signage technologies in Sydney and Melbourne, the measurement and regulation of ‘visual pollution’, and the promotion of entertainment and nightlife in precincts defined by neon and historic signage.
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Graham, Myfanwy, Elianne Renaud, Catherine Lucas, Jennifer Schneider, and Jennifer Martin. "Medicinal cannabis prescribing guidance documents: An evidence-based, best-practice framework based on the New South Wales experience." In 2022 Annual Scientific Meeting of the Research Society on Marijuana. Research Society on Marijuana, 2022. http://dx.doi.org/10.26828/cannabis.2022.02.000.51.

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Introduction: In 2018, the Australian Centre for Cannabinoid Clinical and Research Excellence (ACRE), a National Health and Medical Research Council (NHMRC) Centre of Research Excellence was funded to develop a suite of state-wide medicinal cannabis prescribing guidance documents. At this time, regulatory changes in Australia were enabling broader access to medicinal cannabis in a medical model. The initiative funded through the New South Wales (NSW) Government’s Clinical Cannabis Medicines Program enabled the development of practical resources to support NSW medical practitioners in prescribing medicinal cannabis to patients for conditions where cannabinoids are perceived to have some benefit. Aim: To provide interim guidance to support medical practitioners in the prescription of medicinal cannabis where they are perceived to have potential benefit. Methods: A team of clinical pharmacologists, pharmacists and clinicians collaborated in the development of the first tranche of prescribing guidance documents. The suite of six medicinal cannabis prescribing guidance documents covered the most common indications for which prescriptions for medicinal cannabis were being sought by NSW patients: dementia; anorexia and cachexia; nausea; chemotherapy-induced nausea and vomiting; spasticity; and chronic non-cancer pain. In 2019, the draft guidance documents underwent a comprehensive review and consultation process involving fifty key stakeholders before publication. Results: The ACRE medicinal cannabis prescribing guidance documents have been widely adopted, both in NSW and around the world. The prescribing guidance documents are now recommended as a health professional educational resource by the Australian national medicines regulator the Therapeutic Goods Administration and state health departments. The prescribing guidance on epilepsy from the second tranche of guidance documents has recently been published in the British Journal of Clinical Pharmacology. National medicinal cannabis prescribing pattern data and enquiries to the first-of-kind, state-government funded medicinal cannabis advisory service for medical practitioners informed the themes of the second tranche of six medicinal cannabis prescribing guidance documents being developed in 2022. Conclusions: ACRE medicinal cannabis prescribing guidance documents delivered interim guidance to Australian medical practitioners on the evidence-based and best-practice prescription of medicinal cannabis. Prescribing guidance document themes align with Australian medicinal cannabis prescribing patterns and areas where medical practitioners are seeking further information and advice. It is anticipated that the prescribing guidance documents will be updated periodically as further evidence becomes available. Acknowledgements: NSW Government through the NSW Clinical Cannabis Medicines Program supported development of the NSW Cannabis Medicines Prescribing Guidance. ACRE was established and is funded through the National Health and Medical Research Council Centres of Research Excellence scheme.
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Kokkoni, Panayiotis Peter, and Alizera Salmachi. "Analysis of South Australian Onshore Oil & Gas Well Decommissioning and Potential Impact on Regulatory Compliance, Environmental and Corporate Risk — Unified Risk Code." In SPE/IATMI Asia Pacific Oil & Gas Conference and Exhibition. SPE, 2021. http://dx.doi.org/10.2118/205762-ms.

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The Cooper/Eromanga Basin is in central Australia and has been the focal point for oil and gas exploration and development in South Australia since the first commercial hydrocarbon discovery in 1963. In the years and decades following, thousands of subsequent wells have been drilled. The CE Basin spans across four states and territories covering an area ~35,000km2. The concentration of South Australian wells is situated in the Northeast of the state and sparsely concentrated in a 300km × 500km area (Figure 1) with the wells in this area being the focus of this research study. Well decommissioning commonly referred to as Plug and Abandonment (P&A) aims to restore the natural integrity of geological formations that existed prior to drilling. It is a mandatory requirement for all wells and must account for the effects of any foreseeable chemical and geological processes from an eternal standpoint. The minimum requirement for abandonment of the South Australian wells is governed by Objective 6 Cooper Basin State Environmental Objectives (SEO): Drilling, Completions and Well Operations, November 2015 guidelines, which provides the compliance criteria for appropriate barrier installation and verification. Well complexity is determined by the difficulty in achieving this minimum compliance requirement based on available data of well conditions, simplified in the form of a risk code.
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Day, Kristen, and Erin Campbell. "Four Melbourne Architects (1979): The Creation of Contemporary Perceptions for Australian Architecture." In The 38th Annual Conference of the Society of Architectural Historians Australia and New Zealand. online: SAHANZ, 2022. http://dx.doi.org/10.55939/a3994pszy5.

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In 1979, Peter Corrigan conceived the idea for the ‘Four Melbourne Architects’ exhibition to be held at South Yarra’s Powell Street Gallery. Corrigan led the charge to draw a line between a new generation of architectural practitioners with a fresh design agenda and the conservative practices represented by the Royal Australian Institute of Architects (RAIA). This exhibition, along with the establishment of the Half Time Club and the launch of Transition Magazine, provided platforms for a lively and vigorous profession. The ‘Four Melbourne Architects’—Greg Burgess, Peter Crone, Norman Day and Edmond and Corrigan—were diverse in their approach to architectural design yet shared common concerns of the post-Whitlam generation. The research for this paper examines the documentation between the four architects as they prepared their exhibition, recording the projects exhibited, along with critical reviews of the exhibition. Interviews have been undertaken with the surviving architects involved and people who attended the exhibition. Four Melbourne Architects was the first of many exhibitions during that period, which became one of many vehicles for public engagement with early postmodernism and those creating it, where collaboration, inclusion, and connectivity informed designers. That process activated a search for a contemporary Australian identity leading to the development of the ‘Melbourne School’.
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Reports on the topic "Pasture research – South Australia"

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Cunningham, Stuart, Marion McCutcheon, Mark Ryan, Susan Kerrigan, Phillip McIntyre, and Greg Hearn. ‘Creative Hotspots’ in the regions: Key thematic insights and findings from across Australia. Queensland University of Technology, 2022. http://dx.doi.org/10.5204/rep.eprints.227753.

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Description The Creative Hotspots project, or as it was officially titled Australian Cultural and Creative Activity: A Population and Hotspot Analysis, was an expansive, four-year project funded by an Australian Research Council Linkage grant (LP160101724). This comprehensive national study investigated the contemporary dynamics of cultural and creative activity in largely regional and non-capital cities and towns across Australia before the outbreak of COVID-19 in March 2020. In total, the project conducted fieldwork in 17 creative and cultural hotspots across five states: Queensland, New South Wales, Victoria, Western Australia, and South Australia, examining what makes each hotspot “hot”, identifying the dynamics that underpinned their high concentrations of creative and cultural employment and activity. This White Paper outlines the project's findings and outcomes.
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Yahav, Shlomo, John McMurtry, and Isaac Plavnik. Thermotolerance Acquisition in Broiler Chickens by Temperature Conditioning Early in Life. United States Department of Agriculture, 1998. http://dx.doi.org/10.32747/1998.7580676.bard.

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The research on thermotolerance acquisition in broiler chickens by temperature conditioning early in life was focused on the following objectives: a. To determine the optimal timing and temperature for inducing the thermotolerance, conditioning processes and to define its duration during the first week of life in the broiler chick. b. To investigate the response of skeletal muscle tissue and the gastrointestinal tract to thermal conditioning. This objective was added during the research, to understand the mechanisms related to compensatory growth. c. To evaluate the effect of early thermo conditioning on thermoregulation (heat production and heat dissipation) during 3 phases: (1) conditioning, (2) compensatory growth, (3) heat challenge. d. To investigate how induction of improved thermotolerance impacts on metabolic fuel and the hormones regulating growth and metabolism. Recent decades have seen significant development in the genetic selection of the meat-type fowl (i.e., broiler chickens); leading to rapid growth and increased feed efficiency, providing the poultry industry with heavy chickens in relatively short growth periods. Such development necessitates parallel increases in the size of visceral systems such as the cardiovascular and the respiratory ones. However, inferior development of such major systems has led to a relatively low capability to balance energy expenditure under extreme conditions. Thus, acute exposure of chickens to extreme conditions (i.e., heat spells) has resulted in major economic losses. Birds are homeotherms, and as such, they are able to maintain their body temperature within a narrow range. To sustain thermal tolerance and avoid the deleterious consequences of thermal stresses, a direct response is elicited: the rapid thermal shock response - thermal conditioning. This technique of temperature conditioning takes advantage of the immaturity of the temperature regulation mechanism in young chicks during their first week of life. Development of this mechanism involves sympathetic neural activity, integration of thermal infom1ation in the hypothalamus, and buildup of the body-to-brain temperature difference, so that the potential for thermotolerance can be incorporated into the developing thermoregulation mechanisms. Thermal conditioning is a unique management tool, which most likely involves hypothalamic them1oregulatory threshold changes that enable chickens, within certain limits, to cope with acute exposure to unexpected hot spells. Short-tem1 exposure to heat stress during the first week of life (37.5+1°C; 70-80% rh; for 24 h at 3 days of age) resulted in growth retardation followed immediately by compensatory growth" which resulted in complete compensation for the loss of weight gain, so that the conditioned chickens achieved higher body weight than that of the controls at 42 days of age. The compensatory growth was partially explained by its dramatic positive effect on the proliferation of muscle satellite cells which are necessary for further muscle hypertrophy. By its significant effect of the morphology and functioning of the gastrointestinal tract during and after using thermal conditioning. The significant effect of thermal conditioning on the chicken thermoregulation was found to be associated with a reduction in heat production and evaporative heat loss, and with an increase in sensible heat loss. It was further accompanied by changes in hormones regulating growth and metabolism These physiological responses may result from possible alterations in PO/AH gene expression patterns (14-3-3e), suggesting a more efficient mechanism to cope with heat stress. Understanding the physiological mechanisms behind thermal conditioning step us forward to elucidate the molecular mechanism behind the PO/AH response, and response of other major organs. The thermal conditioning technique is used now in many countries including Israel, South Korea, Australia, France" Ecuador, China and some places in the USA. The improvement in growth perfom1ance (50-190 g/chicken) and thermotolerance as a result of postnatal thermal conditioning, may initiate a dramatic improvement in the economy of broiler's production.
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Research Department - General Economic Conditions - State Conditions Letters - South Australia - 1959. Reserve Bank of Australia, March 2022. http://dx.doi.org/10.47688/rba_archives_2006/17980.

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Research Department - Government Finance - State Governments - South Australia Income Tax - 1931 - 1932. Reserve Bank of Australia, March 2022. http://dx.doi.org/10.47688/rba_archives_2006/17058.

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Research Department - Government Finance - State Governments - South Australia Government Finance 1938 - 1941. Reserve Bank of Australia, March 2022. http://dx.doi.org/10.47688/rba_archives_2006/17064.

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Research Department - Government Finance - Statements of Revenue and Expenditure - File 1 - South Australia Quarterly - September 1948 - June 1961. Reserve Bank of Australia, March 2022. http://dx.doi.org/10.47688/rba_archives_2006/17180.

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Research Department - Government Finance - Statements of Revenue and Expenditure - Comparative Statements of Revenue and Expenditure - South Australia - December 1939 - September 1951. Reserve Bank of Australia, March 2022. http://dx.doi.org/10.47688/rba_archives_2006/17158.

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Research Department - Government Finance - State Governments - Statements of Consolidated Revenue & Expenditure Accounts & Loan Fund Accounts (Niemeyer Statements) - South Australia - July 1939 - June 1949. Reserve Bank of Australia, March 2022. http://dx.doi.org/10.47688/rba_archives_2006/17045.

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Research Department - Government Finance - State Governments - Statements of Consolidated Revenue & Expenditure Accounts & Loan Fund Accounts (Niemeyer Statements) - South Australia - August 1930 - June 1939. Reserve Bank of Australia, March 2022. http://dx.doi.org/10.47688/rba_archives_2006/17044.

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Research Department - Government Finance - State Governments - Statements of Consolidated Revenue & Expenditure Accounts and Loans Funds Accounts (Niemeyer Statements) - South Australia (File 4) - July 1955 - June 1961. Reserve Bank of Australia, March 2022. http://dx.doi.org/10.47688/rba_archives_2006/17113.

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