Artículos de revistas sobre el tema "Eastern Australia"
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1
Lambkin, KJ. "Revision of the Australian scorpion-fly genus Harpobittacus (Mecoptera : Bittacidae)". Invertebrate Systematics 8, n.º 4 (1994): 767. http://dx.doi.org/10.1071/it9940767.
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Harpobittacus Gerstaecker is the largest of the six genera of Australian Bittacidae. Adults occur in eastern, south-eastern and south-western Australian eucalypt woodland and coastal heathland during spring and summer and sometimes autumn. The genus contains 11 species, which are diagnosed in the present revision: H. australis (Klug) [= australis rubripes Riek, syn. nov., = corethrarius (Rambur), = intermedius (Selys-Longchamps)] (south-east Australia, including Tasmania); H. albatus Riek, stat. nov. (= limnaeus Smithers, syn. nov.) (coastal eastern Australia); H. christine, sp. nov. (inland south-east Queensland); H. tillyardi Esben-Petersen ( = nigratus Navás) (coastal eastern Australia); H. rubricatus Riek (inland south-east Australia); H. scheibeli Esben-Petersen (= brewerae Smithers, syn. nov.) (inland and coastal eastern Australia); H. septentrionis, sp. nov. (coastal north Queensland); H. nigriceps (Selys-Longchamps) (mainland south-east Australia); H. similis Esben-Petersen, H. quasisimilis, sp. nov., and H. phaeoscius Riek (all south-west Western Australia). Cladistic analysis has produced the following hypothesis of relationships: (((australis (albatus christine)) (tillyardi rubricatus)) ((similis quasisimilis) ((scheibeli septentrionis) (nigriceps phaeoscius))). Immediate sister-species show little or no overlap in their geographic distributions.
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Harvey, A. S., Wm J. Woelkerling y A. J. K. Millar. "The genus Lithophyllum (Lithophylloideae, Corallinaceae, Rhodophyta) in south-eastern Australia, with the description of L. riosmenae, sp. nov." Australian Systematic Botany 22, n.º 4 (2009): 296. http://dx.doi.org/10.1071/sb08051.
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The genus Lithophyllum (Lithophylloideae, Corallinaceae, Rhodophyta) is represented by six species in south-eastern Australia L. chamberlainianum Woelkerling & Campbell, L. corallinae (Crouan & Crouan) Heydrich, L. cuneatum Keats, L. pustulatum (Lamouroux) Foslie, L. riosmenae, sp. nov., and L. stictaeforme (Areschoug in Agardh) Hauck. Four of these taxa are commonly found in Australia, whereas L. cuneatum was previously known only from Fiji and L. riosmenae is newly described. Morphological and anatomical accounts are provided, including keys, information on distribution, nomenclature and habitat in south-eastern Australia. South-eastern Australian species are primarily delimited on characters relating to tetrasporangial conceptacles and the presence/absence of a semi-endophytic habit. Ten species of Lithophyllum are now confirmed to occur in Australia and their diagnostic characters are detailed. Confirmed Australian species of Lithophyllum are primarily delimited on characters relating to tetrasporangial conceptacles, the presence/absence of a semi-endophytic habit and the growth-form. Biogeographic comparisons between south-eastern Australia and other Australian biogeographic regions are also made. Eight species of Lithophyllum are known to occur in southern Australia, three in tropical eastern Australia and three in subtropical western Australia. Southern and south-eastern Australia show major overlap, with five species occurring in both regions. L. pustulatum and L. stictaeformae are widely distributed, having been confirmed to occur in eastern tropical, western subtropical, warm temperate and cold temperate waters within Australia.
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LAST, PETER R. y WILLIAM T. WHITE. "Three new angel sharks (Chondrichthyes: Squatinidae) from the Indo-Australian region". Zootaxa 1734, n.º 1 (28 de marzo de 2008): 1. http://dx.doi.org/10.11646/zootaxa.1734.1.1.
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Four species of angel sharks (family Squatinidae) occur in temperate and subtropical Australian waters. Two of these, Squatina albipunctata sp. nov. and S. pseudocellata sp. nov., which occur mainly off subtropical eastern and western Australia respectively, are formally described and illustrated. The new species differ from temperate Australian species, S. australis and S. tergocellata, in morphometrics, meristics, squamation, and coloration. Another new angel shark, S. legnota sp. nov. from eastern Indonesia, is compared to these species. Unlike Australian Squatina, it has unfringed (rather than fringed) barbels on its nasal flap.
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Gale, Stephen J. y Scott Bainbridge. "Megafloods in inland eastern Australia, April 1990". Zeitschrift für Geomorphologie 38, n.º 1 (1 de enero de 1994): 1–11. http://dx.doi.org/10.1127/zfg/38/1994/1.
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van Rensch, Peter y Wenju Cai. "Indo-Pacific–Induced Wave Trains during Austral Autumn and Their Effect on Australian Rainfall". Journal of Climate 27, n.º 9 (23 de abril de 2014): 3208–21. http://dx.doi.org/10.1175/jcli-d-13-00611.1.
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Abstract During austral winter and spring, the El Niño–Southern Oscillation (ENSO) and the Indian Ocean dipole (IOD), individually or in combination, induce equivalent-barotropic Rossby wave trains, affecting midlatitude Australian rainfall. In autumn, ENSO is at its annual minimum, and the IOD has usually not developed. However, there is still a strong equivalent-barotropic Rossby wave train associated with tropical Indian Ocean sea surface temperature (SST) variability, with a pressure anomaly to the south of Australia. This wave train is similar in position, but opposite in sign, to the IOD-induced wave train in winter and spring and has little effect on Australian rainfall. This study shows that the SST in the southeastern tropical Indian Ocean (SETIO) displays a high variance during austral autumn, with a strong influence on southeast and eastern Australian rainfall. However, this influence is slightly weaker than that associated with SST to the north of Australia, which shares fluctuations with SST in the SETIO region. The SST north of Australia is coherent with a convective dipole in the tropical Pacific Ocean, which is the source of a wave train to the east of Australia influencing rainfall in eastern Australia. ENSO Modoki is a contributor to the convective dipole and as a result it exerts a weak influence on eastern Australian rainfall through the connecting north Australian SST relationship. Thus, SST to the north of Australia acts as the main agent for delivering the impact of tropical Indo-Pacific variability to eastern Australia.
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Panetta, FD. "Isozyme Variation in Australian and South-African Populations of Emex australis Steinh". Australian Journal of Botany 38, n.º 2 (1990): 161. http://dx.doi.org/10.1071/bt9900161.
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Isozyme variation was surveyed at 25 loci in 65 Australian (colonial) and 21 South African (native) populations of Emex australis. Only one polymorphism, restricted in distribution to the eastern States, was observed in Australia. Three additional polymorphisms were detected in South African populations, but most (16) South African populations were indistinguishable from the Australian ones. Thus, the relative uniformity of colonial populations of E. australis reflects the low level of isozyme variation in many populations within its native range.
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Kingsford, R. T., P. S. Wong, L. W. Braithwaite y M. T. Maher. "Waterbird abundance in eastern Australia, 1983 - 92". Wildlife Research 26, n.º 3 (1999): 351. http://dx.doi.org/10.1071/wr96062.
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We examined the relationships between abundance of 16 species of waterbirds and the rainfall in eastern Australia, the rainfall west of this region, the annual Southern Oscillation index (SOI), the wetland area, and hunting in eastern Australia for the period 1983–92. Data were collected during aerial surveys of eastern Australia. For most explanatory variables, lags of up to five years before aerial surveys were also investigated during these analyses. The analyses covered all nine game species (plumed whistling-duck, Australian shelduck, Australian wood duck, pink-eared duck, grey teal, chestnut teal, Pacific black duck, Australasian shoveler, hardhead) and seven non-game species (Australian pelican, white-faced heron, yellow-billed spoonbill, freckled duck, black swan, black-winged stilt, red-necked avocet). Regression models were developed for all species apart from Australian pelicans. Rainfall and climate indices generally were most correlated with the species’ abundance. Bonferroni adjustments to significance levels meant that there were significant variables in regression models for seven of the 16 species. Abundance indices for plumed whistling-duck, chestnut teal, hardhead, black swan and black-winged stilt were related to the climate variables (rainfall, SOI) and wetland area, whereas abundance of pink-eared duck and red-necked avocets were negatively related. Abundance of chestnut teal was positively related to numbers of hunting licences sold. The results are equivocal about the role of hunting in determining waterfowl abundance, which is probably a reflection of few data points and numbers of variables included. In general, abundance indices of waterbirds appear to have decreased between 1983 and 1992, which may correspond to other factors not modelled
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Dettmann, Mary E. y David M. Jarzen. "Pollen evidence for Late Cretaceous differentiation of Proteaceae in southern polar forests". Canadian Journal of Botany 69, n.º 4 (1 de abril de 1991): 901–6. http://dx.doi.org/10.1139/b91-116.
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Amongst diverse and abundant fossil proteaceous pollen in southeastern Australian Late Cretaceous (Campanian–Maastrichtian) sediments are forms identical with pollen of extant taxa within subfamilies Proteoideae, Persoonioideae, Carnarvonioideae, and Grevilleoideae. Taxa identified now have disparate geographic ranges within Australasia. Sclerophyllous Adenanthos and Stirlingia (Proteoideae) are restricted to the southern Australian Mediterranean climatic region; Persoonia (Persoonioideae) ranges into higher rainfall areas of eastern and northern Australia. Grevillea exul – Grevillea robusta and Telopea (Grevilleoideae) and Carnarvonia (Carnarvonioideae) occur in or fringe rain forests in eastern Australasia, as do other members (Macadamia, Gevuina–Hicksbeachia, Knightia, and Beauprea) reported previously. Pollen evidence thereby confirms evolution of both rain forest and sclerophyll members by the Campanian–Maastrichtian. Turnover of proteaceous pollen taxa near the Cretaceous–Tertiary boundary may reflect contemporaneous modifications to the proteaceous communities. Associated with the Late Cretaceous Proteaceae were diverse conifers (Microcachrys, Lagarostrobus, Podocarpus, Dacrydium, Dacrycarpus, and Araucariaceae), Nothofagus, Ilex, Gunnera, Ascarina, Winteraceae, Trimeniaceae, and probable Epacridaceae. The vegetation, which fringed a narrow estuary separating Antarctica from southern Australia, implies a mosaic of rain forest and sclerophyll communities but has no modern analogue. Key words: Proteaceae, Late Cretaceous, Australia, Antarctica.
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SMIT, HARRY. "The water mite genus Aspidiobates Lundblad, 1941 from Australia (Acari: Hydrachnidia: Hygrobatidae) with the description of two new species". Zootaxa 4550, n.º 1 (22 de enero de 2019): 115. http://dx.doi.org/10.11646/zootaxa.4550.1.5.
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Two new species of the water mite genus Aspidiobates are described from Queensland, Australia, i.e. A. imperfectus n. sp. and A. neogeometricus n. sp. Many new records are given for eastern and south-eastern Australia. Finally, a key is provided for all Australian Aspidiobates species.
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Ayres, Renae M., Vincent J. Pettigrove y Ary A. Hoffmann. "Genetic structure and diversity of introduced eastern mosquitofish (Gambusia holbrooki) in south-eastern Australia". Marine and Freshwater Research 63, n.º 12 (2012): 1206. http://dx.doi.org/10.1071/mf11279.
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The closely related eastern mosquitofish (Gambusia holbrooki) and western mosquitofish (Gambusia affinis) have been introduced into many countries and collectively represent the most widely distributed freshwater fish in the world. We investigated genetic patterns associated with the spread of G. holbrooki in its introduced range in south-eastern Australia, by sampling 60 G. holbrooki populations (n = 1771) from major regions where G. holbrooki was initially introduced into Australia, and characterising the genetic diversity and population structure of G. holbrooki, using five polymorphic nuclear microsatellite loci and sequences from two mitochondrial genetic markers. Results were compared with published data on American and European Gambusia samples and historical records. Low microsatellite diversity and strong population genetic structuring were found within G. holbrooki in south-eastern Australia. Observed heterozygosity and allelic richness declined regionally in the order Sydney, Brisbane, Canberra, Melbourne and Adelaide. Microsatellite variation in Australia was reduced compared with native populations. Two mitochondrial DNA haplotypes of G. holbrooki were found; one was common, whereas the other was detected in one Sydney population and one Melbourne population. Cytochrome b sequence diversity was reduced compared with native and European ranges, and sequences were identical to two haplotypes previously identified. Microsatellite diversity of G. holbrooki in south-eastern Australia validates historical records of its spread, beginning north and moving south. Mitochondrial sequencing confirms that G. holbrooki is present in Australia, but the origins of Australian G. holbrooki populations remain unclear.
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Ummenhofer, Caroline C., Alexander Sen Gupta, Andréa S. Taschetto y Matthew H. England. "Modulation of Australian Precipitation by Meridional Gradients in East Indian Ocean Sea Surface Temperature". Journal of Climate 22, n.º 21 (1 de noviembre de 2009): 5597–610. http://dx.doi.org/10.1175/2009jcli3021.1.
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Abstract This study explores the impact of meridional sea surface temperature (SST) gradients across the eastern Indian Ocean on interannual variations in Australian precipitation. Atmospheric general circulation model (AGCM) experiments are conducted in which the sign and magnitude of eastern Indian Ocean SST gradients are perturbed. This results in significant rainfall changes for western and southeastern Australia. A reduction (increase) in the meridional SST gradient drives a corresponding response in the atmospheric thickness gradients and results in anomalous dry (wet) conditions over Australia. During simulated wet years, this seems to be due to westerly anomalies in the thermal wind over Australia and anomalous onshore moisture advection, with a suggestion that the opposite occurs during dry conditions. Thus, an asymmetry is seen in the magnitude of the forced circulation and precipitation response between the dry and wet simulations. To assess the relative contribution of the SST anomalies making up the meridional gradient, the SST pattern is decomposed into its constituent “poles,” that is, the eastern tropical pole off the northwest shelf of Australia versus the southern pole in the central subtropical Indian Ocean. Overall, the simulated Australian rainfall response is linear with regard to the sign and magnitude of the eastern Indian Ocean SST gradient. The tropical eastern pole has a larger impact on the atmospheric circulation and Australian precipitation changes relative to the southern subtropical pole. However, there is clear evidence of the importance of the southern pole in enhancing the Australian rainfall response, when occurring in conjunction with but of opposite sign to the eastern tropical pole. The observed relationship between the meridional SST gradient in the eastern Indian Ocean and rainfall over western and southeastern Australia is also analyzed for the period 1970–2005. The observed relationship is found to be consistent with the AGCM results.
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AHYONG, SHANE T. y GARY C. B. POORE. "Deep-water Galatheidae (Crustacea: Decapoda: Anomura) from southern and eastern Australia". Zootaxa 472, n.º 1 (23 de marzo de 2004): 1. http://dx.doi.org/10.11646/zootaxa.472.1.1.
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Twenty-nine species in five genera of deep-water Galatheidae are reported from southern and eastern Australia increasing the known Australian galatheid fauna from 55 to 74. Species of Paramunida and Agononida are reported for the first time from southern Australia, with a new species of each described, P. antipodes and A. procera. Seven new species of Munida are described (M. aequalis, M. asprosoma, M. chydaea, M. endeavourae, M. isos, M. kapala, and M. spinicruris) increasing the number of known Australian species from 12 to 19. Four new species of Munidopsis are described (Ms. kensleyi, Ms. proales, Ms. tasmaniae, Ms. treis) and three species are newly recorded from Australia (Ms. centrina, Ms. dasypus, Ms. subsquamosa) increasing the known fauna from 11 to 18. Previous records of Ms. dasypus are based on Ms. kensleyi, but we include the first reliable record of M. dasypus from Australia. Previous records of Munida japonica from Australia are referable to M. rogeri Macpherson. Previous Australian records of Munida microps Alcock are referable to two new species, M. endeavourae and M. isos. Previous Australian records of Ms. dasypus are referable to Ms. kensleyi. Raymunida formosanus Lin, Chan & Chu is reported for the first time from Australia. Alcock s (1894) Munida squamosa var. prolixa is recognised as a distinct species of Agononida.
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Franklin, Wally, Trish Franklin, Lyndon Brooks, Nadine Gibbs, Simon Childerhouse, Franz Smith, Daniel Burns et al. "Antarctic waters (Area V) near the Balleny Islands are a summer feeding area for some eastern Australian Breeding Stock E(i) Humpback Whales (Megaptera novaeangliae)". J. Cetacean Res. Manage. 12, n.º 3 (8 de febrero de 2023): 321–27. http://dx.doi.org/10.47536/jcrm.v12i3.562.
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Discovery mark tagging provided the first evidence of linkages between eastern Australian and Oceania Humpback whale breeding grounds and the Antarctic Area V feeding areas. Early investigation of movements of humpback whales in the Western Pacific led to the view that the Balleny Islands and the Ross Sea were the summer destinations for humpback whales from eastern Australia and the Oceania breeding grounds. Recent photo-identification (ID) studies provided further evidence of low levels of migratory interchange and complex linkages within Oceania and between eastern Australia and Oceania. We report here the migratory movement of three humpback whales (Megaptera novaeangliae) between Eastern Australia (E(i) breeding stock) and the Area V Antarctic feeding area in the vicinity of the Balleny Islands. Using photo-ID techniques, comparisons between a Balleny Island fluke catalogue (n = 11 individuals) and existing fluke catalogues from eastern Australia (n = 3,120 individuals) and Oceania (n = 725 individuals), yielded three matches to Hervey Bay, Byron Bay and Ballina in eastern Australia and no matches to Oceania. The eastern Australia catalogue (n = 3,120) was made up of Hervey Bay (n = 1,556), Byron Bay, (n = 916) and Ballina (n = 648). The Oceania catalogue (n = 725) is made up of Tonga (n = 282); New Caledonia (n = 160); French Polynesia (n = 159); New Zealand (n = 41); Cook Islands (n = 36); American Samoa (n = 31); Vanuatu, Niue, Samoa and Fiji (n = 11) and Norfolk Island (n = 5). Only three previous individual photo-ID matches have been reported between eastern Australia Breeding Stock E(i) and Antarctic Area V feeding areas in the vicinity of the Balleny Islands and the Ross Sea. Only one genotype match has been reported between Antarctic Area V feeding areas and Oceania breeding grounds. An analysis of the frequencies of whales seen and not seen in the Balleny Islands, Oceania and eastern Australia, relative to the expected frequencies, based on the estimated population sizes and the sizes of the catalogues, supports the hypothesis that Antarctic Area V waters, in the vicinity of the Balleny islands, is a summer feeding area for some eastern Australian humpback whales.
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Cardinal, B. R. y L. Christidis. "Mitochondrial DNA and morphology reveal three geographically distinct lineages of the large bentwing bat (Miniopterus schreibersii) in Australia". Australian Journal of Zoology 48, n.º 1 (2000): 1. http://dx.doi.org/10.1071/zo99067.
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A combined molecular and morphological analysis was undertaken to resolve the systematics of the Miniopterus schreibersii complex in Australia. The study of skull morphology and sequence analysis of two mitochondrial genes, nicotinamine dehydrogenase subunit 2 and cytochrome-b, revealed three distinct Australian forms of M. schreibersii which are treated as subspecies. M. s. orianae occurs in northern Australia, M. s. oceanensis occurs in eastern Australia from Queensland through to central Victoria and M. s. bassanii, sp. nov. occurs in Western Victoria and eastern South Australia. The biogeographical history of the complex in Australia is discussed in the light of this new revision.
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Naughton, Kate M. y Timothy D. O'Hara. "A new brooding species of the biscuit star Tosia (Echinodermata:Asteroidea:Goniasteridae), distinguished by molecular, morphological and larval characters". Invertebrate Systematics 23, n.º 4 (2009): 348. http://dx.doi.org/10.1071/is08021.
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The biscuit star Tosia australis Gray, 1840 is a well known component of the shallow rocky reef fauna of south-eastern Australia. The putative T. australis species complex was subjected to reproductive, morphometric and molecular analyses. Molecular analyses of the data from three markers (mitochondrial COI and 16S rRNA and the nuclear non-coding region ITS2) confirmed the presence of a cryptic species, the morphology of which does not agree with any of the existing nominal species. Two separate reproductive modes were observed within the complex and documented via scanning electron microscopy. T. neossia, sp. nov., described herein from south-eastern Australia, is shown to release gametes from gonopores on the actinal surface. Embryos develop first into non-feeding, non-swimming brachiolaria, and then into tripod brachiolaria before metamorphosis. No surface cilia are present at any point throughout development of T. neossia. T. australis sensu stricto is shown to release gametes from the abactinal surface. Embryos develop into non-feeding, swimming brachiolaria before metamorphosis. Whereas T. australis var. astrologorum is confirmed as synonymous with T. australis, the status of the putative Western Australian taxon T. nobilis remains unresolved.
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Harvey, A. S., L. E. Phillips, W. J. Woelkerling y A. J. K. Millar. "The Corallinaceae, subfamily Mastophoroideae (Corallinales, Rhodophyta) in south-eastern Australia". Australian Systematic Botany 19, n.º 5 (2006): 387. http://dx.doi.org/10.1071/sb05029.
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The first monographic account of the south-eastern Australian representatives of the Corallinaceae, subfamily Mastophoroideae (Corallinales, Rhodophyta) is presented. The Mastophoroideae contains eight extant genera, four of which [Hydrolithon, Mastophora, Neogoniolithon, Pneophyllum] were confirmed to occur in south-eastern Australia. Hydrolithon is represented by six species (H. farinosum, H. improcerum, H. munitum, H. onkodes, H. rupestre and H. samoënse). Pneophyllum is represented by three species (P. coronatum, P. fragile and P. submersiporum) while Mastophora and Neogoniolithon are represented by a single species each (Mastophora pacifica and Neogoniolithon brassica-florida). Morphological and anatomical accounts are provided, including keys to genera and species, comparisons with related south-eastern Australian mastophoroid species, information on distribution, seasonality, habitat and nomenclature. Brief biogeographical comparisons between south-eastern Australia and other Australasian regions are also made.
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JACOBSEN, IAN P. y MIKE B. BENNETT. "A Taxonomic Review of the Australian Butterfly Ray Gymnura australis (Ramsay & Ogilby, 1886) and Other Members of the family Gymnuridae (Order Rajiformes) from the Indo-West Pacific". Zootaxa 2228, n.º 1 (11 de septiembre de 2009): 1–28. http://dx.doi.org/10.11646/zootaxa.2228.1.1.
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The taxonomy of G. australis was examined as part of a wider review of Indo-West Pacific Gymnuridae species. The study revealed two distinct morphological variants: G. australis var. eastern Australia and G. australis var. northern Australia. Gymnrua australis var. eastern Australia has ≤ 3 complete or partially-complete white tail-bands and may or may not have a dorsal fin. Gymnura australis var. northern Australia has a longer tail region, always possesses a dorsal fin and has ≥ 4 predominantly complete white tail-bands. Morphological and genetic comparisons indicate the observed differences were intraspecific (1.22% genetic gap difference). Wider morphometric comparisons between Indo-West Pacific gymnurids, revealed species differ principally in tail morphology. Dorsal-fin development in G. zonura also varied intraspecifically. Results obtained from the study, help clarify the taxonomic status of the family and provide strong evidence that all Gymnuridae species belong to a single genus Gymnura, with Aetoplatea subsequently defined as a junior synonym.
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Watson, Mandy, Kasey Stamation y Claire Charlton. "Calving rates, long-range movements and site fidelity of southern right whales (Eubalaena australis) in south-eastern Australia". J. Cetacean Res. Manage. 22, n.º 1 (1 de julio de 2021): 17–28. http://dx.doi.org/10.47536/jcrm.v22i1.210.
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Within New Zealand and eastern Australia, over 58,000 southern right whales were harvested by commercial whalers between 1790 and 1980, with approximately 19,000 harvested from south-eastern Australia. Local extirpation is believed to have led to a loss of cultural memory of calving areas, contributing to the limited recovery of the south-eastern Australian population. While the number of whales observed using the south-eastern Australian coastline is increasing, there has been no change over three decades in the annual abundance of cow-calf pairs at Logans Beach in Warrnambool, Victoria, the only established calving ground in the region. Knowledge of life history parameters of the south-eastern Australian population is lacking. Here, we examine sightings and photo-identification data from southern Australia to investigate calving intervals, long range movements and fidelity to the Logans Beach nursery ground. Sightings data revealed at least 93 calves were born at Logans Beach between 1980 and 2018 (an average of 2.6 per year) with a mean calving interval of 3.5 ± 1.0 years (± SE, n = 34). Comparison between photo-identification catalogues compiled for south-eastern and south-western Australian populations shows that southern right whales are wide ranging within southern Australian waters. Females can be sighted at locations as far apart as 3,800 km across seasons and there is overlap in the wintering range of the south-eastern and south-western populations, with at least 7% of whales using both regions. We also provide the first report of an Australian southern right whale female with strong site fidelity to a calving area in one region relocating long-term to a calving area in another region. This work highlights several knowledge gaps, such as; the location of feeding and conception grounds for this population as well as the degree of mixing between the two Australian populations outside their wintering areas. In addition, the proportion of female calves born at Logans Beach returning to their natal site to calve remains unclear. Our work provides the first assessment of calving rates, movement and site fidelity within the south-eastern Australian population, critical for understanding constraints to recovery and informing conservation management of southern right whales in Australia. Targeted, long-term monitoring programs across the south-eastern Australian region are needed to provide demographic information on which to base predictions of the impacts of anthropogenic threats such as noise disturbance, entanglement and vessel strike.
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Casanova, Michelle T. y Kenneth G. Karol. "Monoecious Nitella species (Characeae, Charophyta) from south-eastern mainland Australia, including Nitella paludigena sp. nov." Australian Systematic Botany 21, n.º 3 (2008): 201. http://dx.doi.org/10.1071/sb07026.
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Identification of Australian species of Nitella is problematic. Several species of monoecious Nitella have been described from south-eastern mainland Australia, but identification of these based on current treatments has been difficult. In response to the discovery of a new monoecious Nitella from the swamps of the Fleurieu Peninsula in South Australia, the monoecious species of Nitella from south-eastern mainland Australia were examined and compared. N. paludigena M.T.Casanova & K.G.Karol is distinguished from other monoecious species on the basis of its overall vegetative morphology and oospore morphology. N. paludigena is found in peaty tea-tree (Leptospermum sp) swamps on the Fleurieu Peninsula in South Australia, and in the south-west of Victoria. A description of the morphology and ecology of the five monoecious Nitella species from south-eastern mainland Australia is given, along with a key.
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Phillips, Ryan D., Gary Backhouse, Andrew P. Brown y Stephen D. Hopper. "Biogeography of Caladenia (Orchidaceae), with special reference to the South-west Australian Floristic Region". Australian Journal of Botany 57, n.º 4 (2009): 259. http://dx.doi.org/10.1071/bt08157.
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Caladenia contains 376 species and subspecies, of which almost all are endemic to temperate and southern semiarid Australia. Eleven species occur in New Zealand, 10 of which are endemic, and one species is widely distributed in eastern Australia and the western Pacific. Only three species occur in both south-western and south-eastern Australia. At subgeneric level, Drakonorchis is endemic to the South-west Australian Floristic Region (SWAFR), Stegostyla to eastern Australia and New Zealand, whereas three subgenera, Calonema, Phlebochilus and Elevatae occur on both sides of the Nullarbor Plain. Subgenus Caladenia is primarily eastern Australian but also extends to the western Pacific. The largest subgenera (Calonema and Phlebochilus) have radiated extensively, with Calonema exhibiting a greater concentration of species in more mesic parts of the SWAFR than Phlebochilus. Within the SWAFR, the major biogeographic division within Caladenia follows the 600-mm isohyet. Within rainfall zones, biogeographic districts for Caladenia correlate with a combination of underlying geology and surface soils. Areas of high endemism contain diverse edaphic environments. Climatic and edaphic requirements are likely to be key drivers of rarity in Caladenia, although these parameters may be acting in concert with mycorrhizal and pollinator specificity.
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Dragovich, D. "Weathering rates of marble in urban environments, eastern Australia". Zeitschrift für Geomorphologie 30, n.º 2 (9 de julio de 1986): 203–14. http://dx.doi.org/10.1127/zfg/30/1986/203.
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Andersen, Nils Møller y Tom A. Weir. "The Gerrine Water Striders of Australia (Hemiptera: Gerridae): Taxonomy, Distribution and Ecology". Invertebrate Systematics 11, n.º 2 (1997): 203. http://dx.doi.org/10.1071/it95047.
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Water striders or pond skaters belonging to the subfamily Gerrinae are common inhabitants of various types of fresh water throughout eastern and northern Australia. The present paper deals with the 13 species (in 5 genera) known from Australia. Redescriptions or descriptive notes, illustrations, and keys to adults and nymphs of all species are provided and their distributions recorded and mapped.Tenagogerris pallidusand T. femoratus (both from Northern Territory and Western Australia), Tenagogonus australiensis (Queensland), Limnometra ciliodes (Queensland, Papua New Guinea and Irian Jaya), and Limnogonus fossarum gilguy (Northern Territory, Queensland, South Australia, Western Australia, Indo-Malayan Archipelago, and West Pacific to Samoa and Tonga) are described as new. Limnometra poliakanthinaNieser & Chen is synonymised with L. cursitans (Fabricius) and Hydrometra australis Skuse (= Limnometra skusei Torre-Bueno) with Limnogonus luctuosus (Montrouzier). The evolution and zoogeography of Australian water striders are discussed. Finally, we discuss the ecology of the gerrine water striders of Australia in relation to our present knowledge about habitats, phenology, wing polymorphism, and association between species.
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Guoth, Nicholas. "Advancing trade with China: The Eastern and Australian Mail Steam Company and the 1873–1880 mail contract". International Journal of Maritime History 31, n.º 2 (mayo de 2019): 263–84. http://dx.doi.org/10.1177/0843871419833524.
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The Eastern and Australian Mail Steam Company altered the dynamics of sea transport between China and Australia in the late nineteenth century. From 1873 to 1880, this shipping company initiated a new, regular, and permanent route between China and Australia that assisted in the development of stronger trade relationships. The company fulfilled this on the back of a mail contract with the Queensland government. What transpired during the mail contract, its impacts, and its legacies have left an indelible, though unrecognised, positive mark on Australia’s trade relationships with China. As such, Eastern and Australian were one of the pioneers in brokering regular international trade routes for colonial Australian merchants and governments. They also became an integral element in the eventual transition from sail to steam, not only along the China-Australia route but also for all Australian international shipping.
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WHITE, WILLIAM T., PETER R. LAST y JOHN D. STEVENS. "Cirrhigaleus australis n. sp., a new Mandarin dogfish (Squaliformes: Squalidae) from the south-west Pacific". Zootaxa 1560, n.º 1 (27 de agosto de 2007): 19–30. http://dx.doi.org/10.11646/zootaxa.1560.1.2.
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A new species of Mandarin dogfish, Cirrhigaleus australis n. sp., is described based on specimens from southeastern Australia. Australian populations were previously considered to be conspecific with Cirrhigaleus barbifer from the western North Pacific and Indonesia, but recent investigations revealed that the two forms differ in morphology and in the structure of the CO1 gene. Cirrhigaleus australis has a smaller eye, shorter dorsal-caudal space, and smaller pectoral fins and dorsal fins and spines. These species are clearly separable from the only other congener, C. asper, and all other members of the family Squalidae, by the possession of a greatly produced barbel on their anterior nasal flap. The new species occurs in temperate waters of eastern Australia, and possibly New Zealand.
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Sewell, Kim B. y Robert J. G. Lester. "Stock composition and movement of gemfish, Rexea solandri, as indicated by parasites". Canadian Journal of Fisheries and Aquatic Sciences 52, S1 (1 de agosto de 1995): 225–32. http://dx.doi.org/10.1139/f95-530.
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The parasite fauna of gemfish, Rexea solandri, from seven areas off southern Australia, was examined for evidence of isolated gemfish populations. Canonical multivariate analyses of data on larval nematodes (Anisakis spp. and Terranova sp.), cestode plerocercoids (Hepatoxylon trichiuri and Nybelinia sp.), acanthocephalans (Rhadinorhynchus sp. and Corynosoma sp.), and a hemiuroid digenean from a total of 763 gemfish showed that the parasite faunas of fish from eastern Australia were similar except for a sample taken off New South Wales at the end of the spawning season whose affinities are unknown. Fish from South Australia had similar parasite faunas to those collected from eastern Australia, suggesting that fish from the eastern and western Bass Strait belong to the same stock. Fish collected from the Great Australian Bight were distinct from the southern and eastern fish. Differences in parasite fauna were detected between samples taken within the spawning season and those taken from the same locations outside the spawning season, presumably a result of the spawning migration.
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Rotstayn, L. D., M. A. Collier, R. M. Mitchell, Y. Qin, S. K. Campbell y S. M. Dravitzki. "Simulated enhancement of ENSO-related rainfall variability due to Australian dust". Atmospheric Chemistry and Physics 11, n.º 13 (12 de julio de 2011): 6575–92. http://dx.doi.org/10.5194/acp-11-6575-2011.
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Abstract. Australian dust emissions are highly episodic, and this may increase the importance of Australian dust as a climate feedback agent. We compare two 160-year coupled atmosphere-ocean simulations of modern-day climate using the CSIRO Mark 3.6 global climate model (GCM). The first run (DUST) includes an interactive treatment of mineral dust and its direct radiative effects. The second run (NODUST) is otherwise identical, but has the Australian dust source set to zero. We focus on the austral spring season, when the correlation between rainfall and the El Niño Southern Oscillation (ENSO) is strongest over Australia. The ENSO-rainfall relationship over eastern Australia is stronger in the DUST run: dry (El Niño) years tend to be drier, and wet (La Niña) years wetter. The amplification of ENSO-related rainfall variability over eastern Australia represents an improvement relative to observations. The effect is driven by ENSO-related anomalies in radiative forcing by Australian dust over the south-west Pacific Ocean; these anomalies increase (decrease) surface evaporation in La Niña (El Niño) years. Some of this moisture is advected towards eastern Australia, where increased (decreased) moisture convergence in La Niña (El Niño) years increases the amplitude of ENSO-related rainfall variability. The modulation of surface evaporation by dust over the south-west Pacific occurs via surface radiative forcing and dust-induced stabilisation of the boundary layer. The results suggest that (1) a realistic treatment of Australian dust may be necessary for accurate simulation of the ENSO-rainfall relationship over Australia, and (2) radiative feedbacks involving dust may be important for understanding natural rainfall variability over Australia.
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Rotstayn, L. D., M. A. Collier, R. M. Mitchell, Y. Qin y S. K. Campbell. "Simulated enhancement of ENSO-related rainfall variability due to Australian dust". Atmospheric Chemistry and Physics Discussions 11, n.º 1 (19 de enero de 2011): 1595–639. http://dx.doi.org/10.5194/acpd-11-1595-2011.
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Abstract. Average dust emissions from Australia are small compared to those from the major sources in the Northern Hemisphere. However, they are highly episodic, and this may increase the importance of Australian dust as a climate feedback agent. We compare two 160-year coupled atmosphere-ocean simulations of modern-day climate using the CSIRO Mark 3.6 global climate model (GCM). The first run (DUST) includes an interactive treatment of mineral dust and its direct radiative effects. The second run (NODUST) is otherwise identical, but has the Australian dust source set to zero. We focus on the austral spring season, when the correlation between rainfall and the El Niño Southern Oscillation (ENSO) is strongest over Australia. We find that the ENSO-rainfall relationship over eastern Australia is stronger in the DUST run: dry (El Niño) years tend to be drier, and wet (La Niña) years wetter. The ENSO-rainfall relationship is also weaker over north-western Australia in the DUST run. The amplification of ENSO-related rainfall variability over eastern Australia and the weaker ENSO-rainfall relationship over the north-west both represent an improvement relative to observations. The suggested mechanism over eastern Australia involves stabilisation of the surface layer due to enhanced atmospheric heating and surface cooling in El Niño years, and enhanced ascent and moisture convergence driven by atmospheric heating in La Niña years. The results suggest that (1) a realistic treatment of Australian dust may be necessary for accurate simulation of the ENSO-rainfall relationship over Australia, and (2) radiative feedbacks involving dust may be important for understanding natural rainfall variability over Australia.
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Helweg, David, Peter Jenkins, Douglas Cat, Robert McCauley y Claire Garrigue. "Geograpmc Variation in South Pacific Humpback Whale Songs". Behaviour 135, n.º 1 (1998): 1–27. http://dx.doi.org/10.1163/156853998793066438.
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AbstractEvery winter, (male) humpback whales (Megaptera novaeangliae) produce long complex songs. Song content is dynamic and singers incorporate changes as they occur, thus song is shared through cultural transmission. We compared songs recorded in winter migratory termini in Tonga, New Caledonia, Eastern Australia, and on migration paths off Eastern Australia and New Zealand, in the winter of 1994. Seven themes were shared by all regions, with an additional two themes shared by all but Tonga. Differences in regional variants were most pronounced between Tongan and Eastern Australian song. New Caledonian and Kaikouran song were more similar to songs from Eastern Australia rather than Tonga. These regional differences were stable across the season. The results suggest some migratory exchange among widely separate wintering regions of Area V, consistent with tag recovery data, but the time and location at which song sharing occurs remains speculative.
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Michael, Peter W. "Plants Links between Eastern Asia and Eastern Australia". Journal of Weed Science and Technology 46, n.º 3 (2001): 214. http://dx.doi.org/10.3719/weed.46.214.
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Michael, Peter W. "Plant Links between Eastern Asia and Eastern Australia". Journal of Weed Science and Technology 46, Supplement (2001): 14–15. http://dx.doi.org/10.3719/weed.46.supplement_14.
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Michael, Peter William. "Plant links between eastern Asia and eastern Australia*". Weed Biology and Management 1, n.º 3 (septiembre de 2001): 157–63. http://dx.doi.org/10.1046/j.1445-6664.2001.00030.x.
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Dickson, A. y K. Noble. "EASTERN AUSTRALIA'S GAS SUPPLY AND DEMAND BALANCE". APPEA Journal 43, n.º 2 (2003): 137. http://dx.doi.org/10.1071/aj02071.
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Concerns have been raised about the capacity for Australia’s natural gas supplies to keep pace with growing demand, particularly in eastern Australia. Specifically, it has been suggested that unless significant infrastructure investment is undertaken now the demand/supply balance situation in eastern Australia will deteriorate quickly as natural gas resources are depleted in the face of strongly growing demand.The purpose of this study is to examine whether and when supplies in eastern Australia are likely to fall short of growing demand.A modelling framework was developed by ABARE to examine these issues at a regional level, building on ABARE’s MARKAL model of the Australian energy system. The modelling framework includes representations of potential sources of natural gas and coal seam methane in Australia by basin, existing and proposed pipeline options and regional gas demands. A number of alternative supply side assumptions were also examined to evaluate their impact on the final results, including annual production rates from various basins and the availability of commercial and non-commercial reserves.
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Franklin, Wally, Trish Franklin, Virginia Andrews-Goff, David Paton y Michael Double. "Movement of two humpback whales (Megaptera novaeangliae) satellite-radio tagged off Eden, NSW and matched by photo-identification with the Hervey Bay catalogue". J. Cetacean Res. Manage. 17, n.º 1 (24 de enero de 2023): 29–33. http://dx.doi.org/10.47536/jcrm.v17i1.429.
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Photo-identification studies of humpback whales off eastern Australia show low levels of movement between eastern Australia and New Caledonia whales. Some eastern Australian humpback whales migrate through the southern waters of New Zealand on route to Antarctic feeding areas. Photoidentification studies have shown that the waters near the Balleny Islands, in Antarctic Area V, are a feeding area for some eastern Australian humpback whales. However, such studies provide no details of the routes taken between New Zealand and Australia and to and from Antarctic feeding areas. Sixteen humpback whales were satellite-linked radio tagged off Eden NSW in 2008. The number and duration of the tag positions reported revealed complete migratory transits from Eden to Antarctic Area V and IV feeding areas. Photographs of the Eden humpback whales were compared to the Hervey Bay photo-identification catalogue and yielded two matches, identified from lateral body marks and dorsal fins. This study provides the first evidence that during the southern migration some humpback whales stopover at Hervey Bay and also migrate past Eden on the NSW coast. The tracks of the two whales from Eden showed that a male sighted in Hervey Bay in the same season moved southeast from Eden towards southern New Zealand. A female with site-fidelity to Hervey Bay in previous seasons, accompanied by a calf when the tag was deployed, moved down and around the coast of Victoria, across Bass Strait and then southwest into the Antarctic Area IV feeding area. Eden may be a migratory hub for humpback whales departing from and approaching the east coast of Australia. This study suggests that eastern Australian humpback whales may exhibit a more diverse range of feeding destinations, after leaving Australian coastal waters, than previously reported.
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Phillips, J. A. "Systematics of the Australian species of Dictyopteris (Dictyotales, Phaeophyceae)". Australian Systematic Botany 13, n.º 2 (2000): 283. http://dx.doi.org/10.1071/sb99002.
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Eleven species of Dictyopteris are recognised for Australia. The tropical species D. australis (Sonder) Askenasy, D. deliculata Lamouroux, D. plagiogramma (Montagne) Vickers, D. repens (Okamura) Børgesen, D. serrata (Areschoug) Hoyt and D. woodwardia (R.Brown ex Turner) C.Agardh are recorded for warmer coasts, although isolated populations of D. australis occur in the Gulfs region of South Australia. Dictyopteris acrostichoides (J.Agardh) Bornet and D. crassinervia (Zanardini) Schmidt are endemic to eastern Australia, with D. acrostichoides also extending to the eastern end of the southern coast. Dictyopteris gracilis Womersley and D. muelleri (Sonder) Reinbold occur on temperate southwestern and southern coasts. The west coast species Dictyopteris secundispiralis J.A.Phillips sp. nov. is described, and D. nigricans Womersley is reduced to a taxonomic synonym ofD. muelleri. Detailed comparative studies undertaken on these species have identified several new taxonomically-informative characters useful for generic circumscription and species discrimination. Thallus branches which have a cortical layer composed of large cuboidal cells and reproductive organs scattered in fertile zones are additional characters which characterise the genus. Australian species of Dictyopteris are now well defined by differences in several distinctive vegetative and reproductive characters such as thallus morphology, blade cell layer number, structure of the thallus apex, presence of marginal teeth and lateral veins, distribution and structure of hair bundles, sporangia, oogonia and antheridial sori.
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Willan, RC. "Taxonomic and biogegraphic review of the Australian endemic genus Nannamoria (Gastropoda : Volutidae) with the description of a new bathyal species". Invertebrate Systematics 9, n.º 1 (1995): 107. http://dx.doi.org/10.1071/it9950107.
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Nannamoria Iredale, 1929, is redefined and monophyly is restored by reinstatement of Paramoria McMichael, 1960, and removal of Volutoconus capricorneus Wilson, 1972. Nannamoria is considered to be representative of the Eastern Overlap Zone rather than the Southern Australian Biogeographic Region. Nannamoria ranya, sp. nov., is described from the outer continental shelf and slope off north-eastern Australia. It occurs closer to the eastern margin of the Australian Continental Shelf than any other species of volute.
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Franklin, Wally, Trish Franklin, Nadine Gibbs, Simon Childerhouse, Claire Garrigue, Rochelle Constantine, Lyndon Brooks et al. "Photo-identification confirms that humpback whales (Megaptera novaeangliae) from eastern Australia migrate past New Zealand but indicates low levels of interchange with breeding grounds of Oceania". J. Cetacean Res. Manage. 14, n.º 1 (1 de febrero de 2023): 133–40. http://dx.doi.org/10.47536/jcrm.v14i1.530.
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Recent photo-identification and genetic studies have identified at least five discrete breeding populations in Australia and Oceania: western Australia (D), eastern Australia (E (i)), New Caledonia (E (ii)), Tonga (E (iii)), French Polynesia and the Cook Islands (F). Also evident are low levels of intermingling among breeding populations consistent with the degree of genetic differentiation. Photo-identification has confirmed linkages between Area V feeding areas and eastern Australia breeding grounds and one genotype match has been reported between Area V feeding areas and Oceania breeding grounds. Recent abundance estimates show strong increases in the eastern Australian population, and some recovery in the New Caledonia and Tonga populations, but with little evidence of recovery at other known Oceania breeding grounds or New Zealand. Studies to date have provided no conclusive evidence of the migratory destination of humpback whales passing through New Zealand waters en route between Antarctic feeding areas and tropical breeding grounds. Photo-identification comparisons were undertaken between humpback whale fluke catalogues from eastern Australia (EA, 1315), Oceania east (OE, 513), Oceania west (OW, 166) and New Zealand (NZ, 13). Five matches were found between OE/OW, four matches between OW/EA and three matches between NZ/EA. The data are used to investigate and discuss the migratory destination and breeding ground migratory interchange of humpback whales travelling through New Zealand waters. The data confirm that humpback whales with site fidelity to eastern Australia migrate past New Zealand including through the Cook Strait and Foveaux Strait.
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Chessman, Bruce C., Nina Bate, Peter A. Gell y Peter Newall. "A diatom species index for bioassessment of Australian rivers". Marine and Freshwater Research 58, n.º 6 (2007): 542. http://dx.doi.org/10.1071/mf06220.
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The Diatom Index for Australian Rivers (DIAR), originally developed at the genus level, was reformulated at the species level with data from diatom sampling of rivers in the Australian Capital Territory, New South Wales, Queensland, South Australia and Victoria. The resulting Diatom Species Index for Australian Rivers (DSIAR) was significantly correlated with the ARCE (Assessment of River Condition, Environment) index developed in the Australian National Land and Water Resources Audit (NLWRA), and with nine of the ARCE’s constituent indices and sub-indices, across 395 river reaches in south-eastern Australia. These correlations were generally stronger than those shown by the biological index that was used to assess river condition in the NLWRA, the ARCB (Assessment of River Condition, Biota) index based on macroinvertebrates and the Australian River Assessment System (AUSRIVAS). At a finer spatial scale, DSIAR was strongly and significantly correlated with measures of catchment urbanisation for streams in the eastern suburbs of Melbourne, Victoria. DSIAR scores across south-eastern Australia bore little relationship to the latitude, longitude or altitude of sampling sites, suggesting that DSIAR is not greatly affected by macro-geographical position. In addition, DSIAR scores did not vary greatly among small-scale hydraulic environments within a site. DSIAR appears to have potential as a broad-scale indicator of human influences on Australian rivers, especially the effects of agricultural and urban land use, and also for impact studies at a local scale. Further evaluation is warranted to test the sensitivity of the index to natural variables such as catchment geology, and to assess its performance in northern, western and inland Australia.
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Neil, David. "Weathering rates of a subaerially exposed marble in eastern Australia". Zeitschrift für Geomorphologie 33, n.º 4 (27 de diciembre de 1989): 463–73. http://dx.doi.org/10.1127/zfg/33/1989/463.
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Broadhurst, Matt K., Michael E. L. Wooden, Damian J. Young y William G. Macbeth. "Selectivity of penaeid trap nets used in south eastern Australia". Scientia Marina 68, n.º 3 (30 de septiembre de 2004): 445–55. http://dx.doi.org/10.3989/scimar.2004.68n3445.
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Mctainsh, GH, AW Lynch y RC Burgess. "Wind erosion in eastern Australia". Soil Research 28, n.º 2 (1990): 323. http://dx.doi.org/10.1071/sr9900323.
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Land degradation surveys in Australia may not have fully delineated the nature and extent of wind erosion, owing perhaps, to a shortage of quantitative data on wind erosion rates and to the subtle and transient nature of field evidence. The Ew Index of wind erosion demonstrates that regional climatic factors (i.e. effective soil moisture and wind erosivity) have a significant influence upon wind erosion rates (measured by dust storm frequencies). Also, a map of wind erosion classes shows areas where wind erosion is increased or decreased by local conditions of soil/sediment erodibility and/or agricultural and pastoral activities.
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Gale, Stephen J. y Scott Bainbridge. "The floods in eastern Australia". Nature 345, n.º 6278 (junio de 1990): 767. http://dx.doi.org/10.1038/345767a0.
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Glen, R. A. "The Tasmanides of eastern Australia". Geological Society, London, Special Publications 246, n.º 1 (2005): 23–96. http://dx.doi.org/10.1144/gsl.sp.2005.246.01.02.
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Harker, Janet E. "THE EPHEMEROPTERA OF EASTERN AUSTRALIA". Transactions of the Royal Entomological Society of London 105, n.º 12 (24 de abril de 2009): 241–68. http://dx.doi.org/10.1111/j.1365-2311.1954.tb00765.x.
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Roberts, Jane. "Changes inPhragmites australis in south-eastern Australia: A habitat assessment". Folia Geobotanica 35, n.º 4 (diciembre de 2000): 353–62. http://dx.doi.org/10.1007/bf02803548.
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Hayden, Helen L., Anton J. Cozijnsen y Barbara J. Howlett. "Microsatellite and Minisatellite Analysis of Leptosphaeria maculans in Australia Reveals Regional Genetic Differentiation". Phytopathology® 97, n.º 7 (julio de 2007): 879–87. http://dx.doi.org/10.1094/phyto-97-7-0879.
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The population genetic structure of the fungal pathogen Leptosphaeria maculans was determined in Australia using six microsatellite and two minisatellite markers. Ascospores were sampled from Brassica napus stubble in disease nurseries and commercial fields in different sites over 2 years. The 13 subpopulations of L. maculans exhibited high gene (H = 0.393 to 0.563) and genotypic diversity, with 357 haplotypes identified among 513 isolates. Although the majority of genetic variation was distributed within subpopulations (85%), 10% occurred between the regions of eastern and Western Australia, and 5% within regions. FST analysis of subpopulation pairs also showed the east-west genetic differentiation, whereas factorial correspondence analysis separated Western Australian subpopulations from eastern ones. Bayesian model-based population structure analyses of multilocus haplotypes inferred three distinct populations, one in Western Australia and an admixture of two in eastern Australia. These two regions are separated by 1,200 km of arid desert that may act as a natural barrier to gene flow, resulting in differentiation by random genetic drift. The genetic differentiation of L. maculans isolates between eastern and Western Australia means that these regions can be treated as different management units, and reinforces the need for widespread disease nurseries in each region to screen breeding lines against a range of genetic and pathogenic populations of L. maculans.
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Wang, Guomin y Harry H. Hendon. "Sensitivity of Australian Rainfall to Inter–El Niño Variations". Journal of Climate 20, n.º 16 (15 de agosto de 2007): 4211–26. http://dx.doi.org/10.1175/jcli4228.1.
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Abstract Australia typically experiences drought during El Niño, especially across the eastern two-thirds of the continent during austral spring (September–November). There have, however, been some interesting departures from this paradigm. For instance, the near-record-strength El Niño of 1997 was associated with near-normal rainfall. In contrast, eastern Australia experienced near-record drought during the modest El Niño of 2002. This stark contrast raises the issue of how the magnitude of the drought is related to the character and magnitude of El Niño, for instance as measured by the broadscale sea surface temperature (SST) anomaly in the equatorial eastern Pacific. Internal (unpredictable) atmospheric noise is one plausible explanation for this contrasting behavior during these El Niño events. Here, the authors suggest that Australian rainfall is sensitive to the zonal distribution of SST anomalies during El Niño and, in particular, the greatest sensitivity is to the SST variations on the eastern edge of the Pacific warm pool rather than in the eastern Pacific where El Niño variations are typically largest. Positive SST anomalies maximized near the date line in 2002, but in 1997 maximum anomalies were shifted well into the eastern Pacific, where their influence on Australian rainfall appears to be less. These findings provide a plausible physical basis for the view that forecasting the strength of El Niño is not sufficient to accurately predict rainfall variations across Australia during El Niño.
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Ash, G. J., B. Stodart y J. W. Hyun. "Black Scab of Jojoba (Simmondsia chinensis) in Australia Caused by a Putative New Pathotype of Elsinoë australis". Plant Disease 96, n.º 5 (mayo de 2012): 629–34. http://dx.doi.org/10.1094/pdis-06-11-0465.
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A new disease of jojoba in Australia is described. We have demonstrated that this disease is caused by Elsinoë australis, a pathogen which is normally associated with citrus. This pathogen has not been found previously in Australia on citrus or any other crop. The fungus causes a scab on leaves and stems of jojoba and is widely distributed in eastern Australia. Although molecular analysis of the pathogen indicates that it is closely related to the natsudaidai and the sweet orange pathotypes of E. australis, glasshouse and laboratory experiments demonstrate that it is not pathogenic to a range of citrus cultivars grown in Australia. The data indicate that the isolates from jojoba represent a new pathotype of E. australis.
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MCGREGOR, GLENN B. "Freshwater Cyanobacteria of North-Eastern Australia: 2. Chroococcales". Phytotaxa 133, n.º 1 (20 de septiembre de 2013): 1. http://dx.doi.org/10.11646/phytotaxa.133.1.1.
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This volume provides the first detailed account of the Chroococcales of north-eastern Australia. It provides keys, morphological and ecological data for 6 families, 33 genera and 112 species, and photomicrographs and original illustrations to enable the identification of natural populations based on stable and recognizable characters observable with the aid of light microscopy. Distributional data are based on extensive surveys at 270 sites representing the major freshwater habitats including rivers and streams, palustrine and lacustrine wetlands, thermal springs, and man-made reservoirs in Queensland and the Northern Territory as well as a review of the Australian phycological literature.
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Franklin, Wally, Trish Franklin, Sal Cerchio, Howard Rosenbaum, Curt Jenner, Micheline Jenner, Leandra Goncalves et al. "Photo-identification comparison of humpback whale (Megaptera novaeangliae) flukes from Antarctic Area IV with fluke catalogues from East Africa, Western Australia and Eastern Australia". J. Cetacean Res. Manage. 17, n.º 1 (24 de enero de 2023): 1–7. http://dx.doi.org/10.47536/jcrm.v17i1.425.
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Early ‘Discovery mark’ data together with recent photo-identification, acoustic, genetic and satellite-radio tag data revealed linkages between humpback whales migrating from breeding grounds (C) off East Africa and the Area III feeding area, from Western Australian breeding grounds (D) and the Antarctic Area IV feeding area and the East Australian breeding grounds (E1) and Antarctic Area V feeding area. These data also revealed low levels of intermingling between (E1) and (D) humpback whales in the Antarctic Area IV feeding area consistent with these being separate populations. Greenpeace photographed the ventral tail flukes of 30 individual humpback whales in the Antarctic Area IV feeding area (70°E–130°E) from 2 to 9 January 2008, between 62°47’S and 64°14’S latitude and 80°00’E and 112°57’E longitude. Comparisons of the Antarctic Area IV Greenpeace fluke catalogue (n = 30) with existing reconciled fluke catalogues from East Africa (n = 842), Western Australia (n = 1,558) and Eastern Australia (n = 1,964), yielded no photo-identification matches. An analysis of the frequencies of whales seen and not seen in Antarctica, East Africa, Western Australia and Eastern Australia relative to the frequencies expected to have been seen and not seen, based on the estimated population sizes and the sizes of the catalogues, provided evidence that the Antarctic whales photographed are from a different population to the East African and East Australian populations. There was weak evidence supporting the hypothesis that the Antarctic whales are from the Western Australian population but insufficient data were available to determine a clear outcome. A comparison of the Antarctic Area IV Greenpeace catalogue (n = 30) with other existing African, Indian Ocean, Western and Eastern Australian and/or Antarctic catalogues, together with increased sampling across the humpback whale feeding season in Antarctica and along the Western and Eastern Australian coastline during their winter migration, is likely to provide further evidence of the migratory destination of these humpback whales. It will also add to our limited knowledge of the extent of population overlap within the Antarctic Area III, IV and V feeding areas.
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Maslin, BR y L. Pedley. "Patterns of Distribution of Acacia in Australia". Australian Journal of Botany 36, n.º 4 (1988): 385. http://dx.doi.org/10.1071/bt9880385.
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Patterns of distribution are described for the three subgenera and nine sections that make up the Australian Acacia flora. Subgenus Phyllodineae (833 species) is widespread and contains 99% of the species; subgenus Acacia (six species) and subgenus Aculeiferum (one species) are poorly represented and virtually confined to the north of the continent. The geographic patterns of species-richness are strongly influenced by sections Phyllodineae (352 species), Juliflorae (219 species) and Plurinerves (178 species). Section Phyllodineae has centres of richness south of the Tropic of Capricorn in temperate and adjacent semiarid areas of eastern, south-eastern and south-western Australia. The section is poorly represented in the tropics. The closely related sections Juliflorae and Plurinerves predominate in the north of the continent, semiarid areas of the south-west, many rocky tablelands of the Arid Zone and along the Great Dividing Range and adjacent inland riverine lowland areas in eastern Australia. The remaining four sections contribute little to the overall patterns of species-richness. The principal speciespoor areas are sandy and fluvial lowland regions of the Arid Zone. In eastern Australia, sections Botrycephalae, Juliflorae, Phyllodineae and Plurinerves show discontinuous patterns of species-richness along the Great Dividing Range. All sections have species whose ranges terminate in the area of the McPherson-Macleay Overlap region.