Journal articles: 'Palynology – Western Australia, Southwestern'

1

Newsome, J. C., and E. J. Pickett. "Palynology and palaeoclimatic implications of two Holocene sequences from southwestern Australia." Palaeogeography, Palaeoclimatology, Palaeoecology 101, no. 3-4 (April 1993): 245–61. http://dx.doi.org/10.1016/0031-0182(93)90017-d.

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Bell, David T., Julie A. Plummer, and Susan K. Taylor. "Seed germination ecology in southwestern Western Australia." Botanical Review 59, no. 1 (January 1993): 24–73. http://dx.doi.org/10.1007/bf02856612.

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Mack, Charlotte L., and Lynne A. Milne. "Eocene palynology of the Mulga Rocks deposits, southern Gunbarrel Basin, Western Australia." Alcheringa: An Australasian Journal of Palaeontology 39, no. 4 (April 13, 2015): 444–58. http://dx.doi.org/10.1080/03115518.2015.1022090.

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HUTCHINSON, PAUL M., and PETER G. ALLSOPP. "Cavonus Sharp, 1875 (Coleoptera: Scarabaeidae: Dynastinae: Pentodontini: Pseudoryctina) in Western Australia with description of a new species and the female of Cavonus sculpturatus Blackburn, 1888." Zootaxa 4852, no. 4 (September 17, 2020): 449–60. http://dx.doi.org/10.11646/zootaxa.4852.4.3.

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The species of Cavonus Sharp, 1875 (Coleoptera: Scarabaeidae: Dynastinae: Pentodontini: Pseudoryctina) from Western Australia, Australia are revised and Cavonus fovealacus new species is described from southwestern Western Australia. The female attributed to Epironastes nigrisetosus Carne, 1957 is redescribed as the female of Cavonus sculpturatus Blackburn, 1888, as is the male of C. sculpturatus. Cavonus latecavatus Dupuis, 2017, from near Menzies in southwestern Western Australia, is transferred to Carneoryctes Özdikmen, 2009 as Carneoryctes latecavatus (Dupuis), new combination. Habitat descriptions, a distributional map, and revised keys to accommodate the new species are presented.

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Milne, Lynne A. "Tertiary palynology: Beaupreaidites and new Conospermeae (Proteoideae) affiliates." Australian Systematic Botany 11, no. 4 (1998): 553. http://dx.doi.org/10.1071/sb97013.

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Late Eocene proteaceous pollen assemblages of southern Australia containnumerous specimens of Conospermeae affiliation. As many of these aremorphologically confusing or nondescript, they have often been overlooked orgrouped within other fossil pollen species. In the western Eucla and MurrayBasins these fossil pollen types fall into two major categories: small speciesconventionally referred to unrelated New Zealand fossil taxa, and thoseincluded in Beaupreaidites elegansiformis Cookson 1950or Beaupreaidites spp. Integrated microscopy of singlefossil grains and a thorough investigation of extant Conospermeae pollen typesaided an investigation of the morphology and affiliations of these problematicgroups. Beaupreaidites elegansiformis was originallyillustrated by three dissimilar specimens, each from a different locality. Ofthese, two can be aligned with Beauprea Brongn. & Gris., and the other, the former lectotype, is an extinct form unrelated toBeauprea. The diagnosis ofBeaupreaidites Cookson emend. Martin is amplified;B. elegansiformis is emended and its lectotypesuperseded; B. orbiculatus Dettmann & Jarzen 1988 istransferred to Proteacidites; and five new species aredescribed (Beaupreaidites diversiformis,Proteacidites bireticulatus,P. carobelindiae, P. cirritulus,and P. marginatus).Proteacidites cirritulus can be positively aligned withpollen of the sclerophyllous genus Petrophile R.Br., inparticular with species now endemic to eastern Australia. The remainingProteacidites species, previously assigned toBeaupreaidites, were likely to have been shed by extinctproteaceous taxa closely allied to Petrophile. Therelative abundance of Petrophile-like pollen in thepalynofloras of the western Eucla and Murray Basins implies the presence ofsclerophyll communities akin to heath, woodland, and/or dry sclerophyllforests in coastal southern Australia during the Late Eocene. Fossilproteaceous genera are reviewed. The species referred here toProteacidites cannot be accommodated within any singlegenus as described in a recent revision of fossil proteaceous genera. Therehas long been quiet dissent among Australian Tertiary palynologists withrespect to revisions of fossil proteaceous genera and their subsequentinterpretation. Consensus, rather than individual determination and conflict,is overdue.

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Vaghefi, Parshin, and Bofu Yu. "Validation of CLIGEN Parameter Adjustment Methods for Southeastern Australia and Southwestern Western Australia." Journal of Hydrometeorology 18, no. 7 (July 1, 2017): 2011–28. http://dx.doi.org/10.1175/jhm-d-16-0237.1.

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Abstract Global climate models (GCMs) are usually used for future climate projections. Model output from GCMs needs to be downscaled and stochastic weather generators such as Climate Generator (CLIGEN) are tools to downscale GCM output and to produce synthetic weather sequences that are statistically similar to the observed weather data. Two methods of adjusting CLIGEN parameters were developed to reproduce precipitation sequences for southeastern Australia (SEA), where significant changes in annual precipitation had occurred, and for southwestern Western Australia (SWWA), where the precipitation has shown a significant decreasing trend since the 1920s. The adjustment methods have been validated using observed precipitation data for these regions. However, CLIGEN outputs ultimately will be used as input to other simulation models. The objective of this research was to further validate the methods of CLIGEN parameter adjustment using conceptual hydrological models to simulate streamflow and to compare the streamflow using observed and CLIGEN-generated precipitation data. Six precipitation sites from SEA and SWWA were selected and synthetic time series of daily precipitation were generated for these sites. Conceptual hydrological models, namely, the Australian Water Balance Model and SimHyd, were used for flow simulation and were calibrated using recorded daily streamflow data from six gauging stations in SEA and SWWA. Both monthly and annual streamflow show statistically similar patterns using observed and CLIGEN-generated precipitation data. The adjustment methods for CLIGEN parameters are further validated and can be used to reproduce the significant changes, both abrupt and gradually decreasing, in streamflow for these two climatically contrasting regions of Australia.

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Dentith, M. C., V. F. Dent, and B. J. Drummond. "Deep crustal structure in the southwestern Yilgarn Craton, Western Australia." Tectonophysics 325, no. 3-4 (October 2000): 227–55. http://dx.doi.org/10.1016/s0040-1951(00)00119-0.

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Allen, T. I. "Empirical Attenuation of Ground-Motion Spectral Amplitudes in Southwestern Western Australia." Bulletin of the Seismological Society of America 96, no. 2 (April 1, 2006): 572–85. http://dx.doi.org/10.1785/0120040238.

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Lilley, Ian. "Recent Research In Southwestern Western Australia: A Summary Of Initial Findings." Australian Archaeology 36, no. 1 (November 1993): 34–41. http://dx.doi.org/10.1080/03122417.1993.11681480.

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Pidgeon, R. T., and A. A. Nemchin. "1.2 Ga Mafic dyke near York, southwestern Yilgarn Craton, Western Australia." Australian Journal of Earth Sciences 48, no. 5 (October 2001): 751. http://dx.doi.org/10.1046/j.1440-0952.2001.00895.x.

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Pidgeon, R. T., and A. A. Nemchin. "1.2 Ga Mafic dyke near York, southwestern Yilgarn Craton, Western Australia." Australian Journal of Earth Sciences 48, no. 5 (October 2001): 751–55. http://dx.doi.org/10.1046/j.1440-0952.2001.485895.x.

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Gavin, Lisa J., Thomas Hoskin, Ben Witten, James Deeks, Rie Kamei, Jelena Markov, and Jeffrey Shragge. "Geophysical remote sensing of historical Aboriginal gravesites in southwestern Western Australia." Leading Edge 33, no. 12 (December 2014): 1348–54. http://dx.doi.org/10.1190/tle33121348.1.

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Martin, HA, and A. McMinn. "Late Cainozoic Vegetation History of North-Western Australia, From the Palynology of a Deep Sea Core (ODP Site 765)." Australian Journal of Botany 42, no. 1 (1994): 95. http://dx.doi.org/10.1071/bt9940095.

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In the late Miocene, casuarinaceous forests were predominant in north-western Australia. Through the Pliocene and Pleistocene, Casuarinaceae declined and Poaceae increased, until grasslands predominated. Acacia and some other shrub species were present, suggesting possible shrublands. Surprisingly, however, there were very few Myrtaceae; hence, eucalypt dominated vegetation was never present in this part of Australia. The present vegetation of Acacia shrublands and tussock/hummock grasslands developed, therefore, from casuarinaceous forests. The late Cainozoic palaeovegetation is compared with others of equivalent age elsewhere in Australia.

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Fitzsimons, Sean J., and Eric A. Colhoun. "Pleistocene glaciation of the King Valley, Western Tasmania, Australia." Quaternary Research 36, no. 2 (September 1991): 135–56. http://dx.doi.org/10.1016/0033-5894(91)90022-w.

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AbstractAnalysis of the geomorphology, geology, and palynology of deposits in the King Valley permits the identification of four glaciations and two interglaciations and has led to a revision of the Pleistocene stratigraphy of the West Coast Range. The oldest late-Cenozoic deposits in the valley appear to predate glaciation, contain extinct pollen types, and are probably of late-Tertiary age. Overlying deposits of the Linda Glaciation show intense chemical weathering and have a reversed detrital remanent magnetization indicating deposition before 730,000 yr B.P. The highly weathered tills are conformably overlain by organic deposits of the Regency Interglaciation which show a transition from montane scrub rainforest to lowland temperate rainforest. Deposits formed during the later Moore Glaciation record advances of the King Glacier and glaciers from the West Coast Range. A pollen-bearing fluvial deposit records an interstade during this glaciation. On the basis of weathering rinds, amino acid dating, and palaeomagnetism the deposits are estimated to have formed between 730,000 and 390,000 yr B.P. The Moore Glaciation deposits are overlain by sediments of the Henty Glaciation which are believed to predate 130,000 yr B.P. These deposits record multiple advances of the King Glacier and the development of a large lake during an interstade. Deposits of the subsequent Pieman Interglaciation consist of organic fine sands and silts that record a lowland scrub rainforest. Deposits of the last (Margaret) glaciation are restricted to small areas in the northern part of the valley. Although the most recent ice advance culminated after 19,000 yr B.P., evidence of older deposits of the Margaret Glaciation suggests that an early last-glaciation ice advance may have occurred. When combined with earlier studies, the recent work in the King Valley has provided one of the more complete records of Pleistocene glaciation in the Southern Hemisphere. Comparison of the deposits with the record of glaciation in southern South America and Westland, New Zealand, suggests some similarities exist between pre-last-glaciation events and indicates that glacial events in Southern Hemisphere middle latitude areas were synchronous during the last glaciation.

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Mory, A. J., J. L. Crowley, J. Backhouse, R. S. Nicoll, S. E. Bryan, M. López Martínez, and D. J. Mantle. "Apparent conflicting Roadian–Wordian (middle Permian) CA-IDTIMS and palynology ages from the Canning Basin, Western Australia." Australian Journal of Earth Sciences 64, no. 7 (September 13, 2017): 889–901. http://dx.doi.org/10.1080/08120099.2017.1365586.

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Pidgeon, R. T., and T. J. F. Cook. "1214 +- 5 Ma dyke from the Darling Range, southwestern Yilgarn Craton, Western Australia." Australian Journal of Earth Sciences 50, no. 5 (October 2003): 769–73. http://dx.doi.org/10.1111/j.1440-0952.2003.01024.x.

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Kaiko, A. R., and A. M. Tait. "POST-RIFT TECTONIC SUBSIDENCE AND PALAEO-WATER DEPTHS IN THE NORTHERN CARNARVON BASIN, WESTERN AUSTRALIA." APPEA Journal 41, no. 1 (2001): 367. http://dx.doi.org/10.1071/aj00017.

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The subsidence history of the Northern Carnarvon Basin has been dominated by simple thermal sag following the creation of the Exmouth, Barrow and Dampier Sub-basins by Early to Middle Jurassic rifting. This conclusion follows from the recognition of vitrinite reflectance suppression, which removes the need for recent heating events, and from the use of seismic stratigraphy, rather than only palynology and micro-palaeontology, to determine palaeo-water depths.The simple thermal-sag model, related to Jurassic rifting, accounts for the post-rift sedimentary architecture of the Northern Carnarvon Basin, especially in areas of sediment starvation. It also has implications for the timing of hydrocarbon generation and the reconstruction of migration pathways. This work has re-emphasised the theoretical possibility of determining palaeo-water depths by adjusting one-dimensional basin models to fit simple thermal sag tectonic subsidence curves.Miocene uplift, in the order of several hundred metres, has caused local basin inversion, accentuated some preexisting structures and re-activated some faults causing hydrocarbon remigration, but has otherwise not affected the thermal history of the sediments.

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Dortch, Charles. "Prehistory Down Under: archaeological investigations of submerged Aboriginal sites at Lake Jasper, Western Australia." Antiquity 71, no. 271 (March 1997): 116–23. http://dx.doi.org/10.1017/s0003598x0008460x.

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Much of Australian prehistory lies under water. Although confined to the continent's extreme southwestern corner, field studies described in this report show that this submerged prehistoric component is very real, with numerous archaeological sites and former land surfaces awaiting investigation on the floors of Australia's lakes, rivers and estuaries, and on its submerged continental margins.

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Bell, David T. "Ecological response syndromes in the flora of southwestern Western Australia: Fire resprouters versus reseeders." Botanical Review 67, no. 4 (October 2001): 417–40. http://dx.doi.org/10.1007/bf02857891.

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Gorter, John, Sarah Poynter, Stewart Bayford, and Andrea Caudullo. "Glacially influenced petroleum plays in the Kulshill Group (Late Carboniferous–Early Permian) of the Southeastern Bonaparte Basin, Western Australia." APPEA Journal 48, no. 1 (2008): 69. http://dx.doi.org/10.1071/aj07007.

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Glacial deposits within the Lower Kulshill Group (Late Carboniferous-Early Permian) were initially recognised in cores from onshore wells in the southeastern Bonaparte Basin in the 1960s. Subsequent offshore wells have extended the distribution of the glaciogene units 100 km to the north. Their capacity to entrap oil and gas was proven by the Turtle and Barnett wells, located on the offshore Turtle High. Similar age glaciogene rocks occur within the Cooper Basin of central Australia, where they contain oil and gas reserves, and in the Canning, Carnarvon and Perth basins of Western Australia. Using sparse cores, electric logs, palynology and a sequence stratigraphic interpretation of 2D seismic data, the distribution of potential reservoir sandstones and sealing lithologies of the glaciogenic strata has been mapped for the offshore southeastern Bonaparte Basin. This study highlights the petroleum trapping potential associated with sub-glacial ice tunnel valley features, which are widespread in the offshore part of the basin.

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Michael, Pippa J., Catherine P. Borger, William J. Macleod, and Pip L. Payne. "Occurrence of Summer Fallow Weeds within the Grain Belt Region of Southwestern Australia." Weed Technology 24, no. 4 (December 2010): 562–68. http://dx.doi.org/10.1614/wt-d-09-00060.1.

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Field surveys were conducted on 319 sites of the Western Australian grain belt in 2006 to determine the occurrence and distribution of summer fallow weed species. Sites were located across five growing season regions (north, north central, central, south central, and south) and three annual rainfall zones (high, medium, and low). A total of 51 species (or species groups) from 18 families were identified, with the large majority of species (35%) belonging to the Poaceae family. The most prevalent species found, being present at more than 10% of all sites, were wheat, “melons” (weedy watermelon and paddymelon), rigid ryegrass, capeweed, clover, mintweed, wild radish, fleabane, windmill grass, and rolypoly. Correspondence analysis revealed that the north, central, and southern regions of the grain belt could be predominately segregated according to dominant weed species occurrence; however, no segregation by rainfall zone was apparent. This study has given an overview of summer fallow weed occurrence in the Western Australian grain belt and highlights those weed species that are common and yet lack sufficient research into their ecology and management.

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CURRIE, DOUGLAS C., DOUGLAS A. CRAIG, and JOHN K. MOULTON. "A new genus, Protaustrosimulium, for four species of Australian black flies (Diptera: Simuliidae)." Zootaxa 4521, no. 3 (November 14, 2018): 301. http://dx.doi.org/10.11646/zootaxa.4521.3.1.

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Protaustrosimulium n. gen. is described for four species: two previously named species from southeastern Australia—Paracnephia pilfreyi (Davies & Györkös 1988) and Paracnephia terebrans (Tonnoir 1925)—plus two newly described ones from the southwestern-most corner of Western Australia—Prot. amphorum n. sp. and Prot. opscurum n. sp. Molecular and morphological data suggest a close relationship between members of the new genus and Austrosimulium Tonnoir 1925. Monophyly of Protaustrosimulium is supported mainly by characters of adult females, as two of the four species are known only in that life stage. Two species groups are recognized: the pilfreyi-group for Prot. pilfreyi and Prot. amphorum, and the terebrans-group for Prot. terebrans and Prot. opscurum. The constituent species in each group are distributed vicariously in southeastern and southwestern Australia—a common biogeographical pattern in Australian simuliids.

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TIMMS, BRIAN V., and MARTIN SCHWENTNER. "A revision of the clam shrimp Australimnadia Timms and Schwentner, 2012 (Crustacea: Spinicaudata: Limnadiidae) with two new species from Western Australia." Zootaxa 4291, no. 1 (July 11, 2017): 81. http://dx.doi.org/10.11646/zootaxa.4291.1.5.

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The original type species of Australimnadia is made a junior synonym of A. grobbeni, originally described as Limnadia grobbeni Daday, 1925. A second species of Australimnadia is described from Onslow, Western Australia; it differs in having unique egg morphology and is distinct in many morphological characters, including those of the telson and cercopod, but also of the thoracopods. Its validity is confirmed by molecular differences between the two species in COI and EF1α. A third species from southwestern Western Australia is separated morphologically by unique spination of the telson and setation of the cercopod, and by its egg morphology.

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Grey, Kathleen, and Kenichiro Sugitani. "Palynology of Archean microfossils (c. 3.0Ga) from the Mount Grant area, Pilbara Craton, Western Australia: Further evidence of biogenicity." Precambrian Research 173, no. 1-4 (September 2009): 60–69. http://dx.doi.org/10.1016/j.precamres.2009.02.003.

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Turney, Chris S. M., Michael I. Bird, L. Keith Fifield, Richard G. Roberts, Mike Smith, Charles E. Dortch, Rainer Grün, et al. "Early Human Occupation at Devil's Lair, Southwestern Australia 50,000 Years Ago." Quaternary Research 55, no. 1 (January 2001): 3–13. http://dx.doi.org/10.1006/qres.2000.2195.

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AbstractNew dating confirms that people occupied the Australian continent before the earliest time inferred from conventional radiocarbon analysis. Many of the new ages were obtained by accelerator mass spectrometry 14C dating after an acid–base–acid pretreatment with bulk combustion (ABA-BC) or after a newly developed acid–base–wet oxidation pretreatment with stepped combustion (ABOX-SC). The samples (charcoal) came from the earliest occupation levels of the Devil's Lair site in southwestern Western Australia. Initial occupation of this site was previously dated 35,000 14C yr B.P. Whereas the ABA-BC ages are indistinguishable from background beyond 42,000 14C yr B.P., the ABOX-SC ages are in stratigraphic order to ∼55,000 14C yr B.P. The ABOX-SC chronology suggests that people were in the area by 48,000 cal yr B.P. Optically stimulated luminescence (OSL), electron spin resonance (ESR) ages, U-series dating of flowstones, and 14C dating of emu eggshell carbonate are in agreement with the ABOX-SC 14C chronology. These results, based on four independent techniques, reinforce arguments for early colonization of the Australian continent.

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Yearsley, E. M., W. M. Fowler, and T. He. "Does smoke water enhance seedling fitness of serotinous species in fire-prone southwestern Western Australia?" South African Journal of Botany 115 (March 2018): 237–43. http://dx.doi.org/10.1016/j.sajb.2017.09.012.

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Barrett, Matthew D., and Dmitry D. Sokoloff. "Centrolepis milleri (Centrolepidaceae: Poales), a new species from Western Australia." Phytotaxa 213, no. 2 (June 15, 2015): 140. http://dx.doi.org/10.11646/phytotaxa.213.2.7.

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Centrolepis milleri, a new species endemic to southwestern Western Australia is described and illustrated. The species is restricted to sandplains and currently known from several sites in the Eneabba sandplain on the southern end of the Geraldton Sandplains Bioregion and a single site on the Esperance Sandplain NE of Albany. Although apparently not collected until 2003, C. milleri is common at several locations. Specimens of C. milleri grow with their leaves mostly buried by sand. This semi-subterranean habit is possibly an adaptation to avoid light stress. Centrolepis milleri superficially resembles C. drummondiana, but differs from it in the presence of two to five cataphylls at the base of a scape, in the absence of a spikelet in the axil of the lower primary bract, in the dimorphic morphology of the primary bracts and in the presence of one long and one short tepal-like phyllome associated with each flower. The absence of a spikelet in the axil of the lower primary bract and the dimorphic nature of the primary bracts are shared with species such as C. polygyna and C. glabra, to which C. milleri is apparently related. The combination of inflorescence characteristics found in C. milleri is unique in Centrolepis, and its inclusion in phylogenetic reconstructions of inflorescence evolution in this unusual genus is therefore significant.

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Fullard, JH, C. Koehler, A. Surlykke, and NL Mckenzie. "Echolocation Ecology and Flight Morphology of Insectivorous Bats (Chiroptera) in South-Western Australia." Australian Journal of Zoology 39, no. 4 (1991): 427. http://dx.doi.org/10.1071/zo9910427.

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A small community of obligate insectivorous microchiropterans in the Perup forest reserve of southwestern Australia was sampled to determine species flight morphologies, diets and echolocation call designs. The aspect ratio:wing loading relationships of the seven species analysed indicate a loose clustering of species into closed, edge and open microhabitats with substantial interspecific overlap. Non-parametric correlations of the bats' aspect ratios and wing loadings with their echolocation call characteristics support these foraging zone classifications. Diet analyses indicate that this community of bats forages on a wide variety of insects, although certain preferences for Lepidoptera, Hymenoptera and Coleoptera were noted. We use these results and observations of the same species from other sites to propose a microhabitat separation for the bats of the Perup forest.

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Hyde, Richard S., Wolfgang D. Kalkreuth, and John Utting. "Petrology, palynology, and depositional environments of coals of the Upper Carboniferous Barachois Group (Westphalian A and C), southwestern Newfoundland." Canadian Journal of Earth Sciences 28, no. 12 (December 1, 1991): 1905–24. http://dx.doi.org/10.1139/e91-172.

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Coal samples from the Barachois Group of western Newfoudland vary in rank from high-volatile C to high-volatile A. The coals are vitrinite rich (> 70%), except some from Coal Brook that contain substantial quantities of inertinite (up to 52%). Liptinite ranges up to 18% but is a relatively minor component. The most abundant constituents amongst the three maceral groups are vitrinite – vitrinite A, inertinite–semifusinite, and liptinite–sporinite. Compositional profiles in three of the seams show no clear correlation between maceral group content and stratigraphic position. The Barachois Group coals are relatively high in ash (mean = 12.8%) and sulphur (mean = 6.9%). Spore assemblages from coal samples of the Barachois Group indicate a Westphalian A age in the Barachois Brook and Coal Brook areas and a Westphalian C age along Blanche Brook.Barachaois coals are part of a mudstone-dominated facies association that developed in an assemblage of floodplain environments. Plots of tissue preservation – gelification indices (TPI/GI) and the assemblages of spores derived from vascular plants suggest that most peats were generated in wet, forested tracts that, from the high ash content, occupied low-lying interfluves. Less wooded fen environments are also indicated, particularly in the Blanche Brook seams, by TPI/GI plots and a spore assemblage suggesting incursion of flood waters and dominance of herbaceous vegetation. Inertinite-rich samples from Coal Brook show extreme variation in paleoenvironmental conditions, which include dry forested regions.

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J. Yates, Colin, Richard J. Hobbs, and Richard W. Bell. "Landscape-scale disturbances and regeneration in semi-arid woodlands of southwestern Australia." Pacific Conservation Biology 1, no. 3 (1994): 214. http://dx.doi.org/10.1071/pc940214.

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Woodlands dominated by Eucalyptus salmonophloia occur both in the fragmented landscapes of the Western Australian wheatbelt and in the adjacent unfragmented goldfields area. We examined the responses of the unfragmented woodlands to landscape-scale disturbances caused by fire, floods, windstorms and drought. Sites known to have experienced disturbances of these types over the past 50 years all had cohorts of sapling-stage E. salmonophloia and other dominant Eucalyptus species. Sites disturbed either by fire, flood or storm during 1991-92 displayed adult tree mortality and extensive seedling establishment, although rates of establishment and survival varied between sites. No regeneration was observed at equivalent undisturbed sites. These results indicate that landscape-scale disturbances of several types are important drivers of the dynamics of these semi-arid woodlands. Lack of regeneration of fragmented woodlands in the wheatbelt is likely to be due to changed disturbance regimes coupled with altered physical and biotic conditions within remnants. We argue that it may be difficult to identify processes which are important for the long-term persistence of natural ecosystems in fragmented landscapes without reference to equivalent unfragmented areas.

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LAST, PETER R., JUSTIN A. CHIDLOW, and LEONARD J. V. COMPAGNO. "A new wobbegong shark, Orectolobus hutchinsi n. sp. (Orectolobiformes: Orectolobidae) from southwestern Australia." Zootaxa 1239, no. 1 (June 21, 2006): 35. http://dx.doi.org/10.11646/zootaxa.1239.1.3.

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Orectolobus hutchinsi n. sp.. is a moderate-sized wobbegong shark found in shallow continental shelf habitats off Western Australia. It occurs from Coral Bay (near North West Cape) south to Groper Bluff (west of Bremer Bay) in depths of 9–106 m where it is caught as by-catch of local gillnet, longline, rock lobster and recreational fisheries. It is sympatric with two other commercial wobbegong species, Orectolobus maculatus and O. ornatus, but differs from these and other IndoPacific species in having the combination of a few unbranched dermal lobes, relatively tall dorsal fins, no warty tubercles on the back of adults, and dark brown corrugated saddles without white spots and blotches. Some details of its biology are also provided.

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Hameed, S., M. Iqbal, Rehman Saqib-ur, and D. Collins. "Impact of the Indian Ocean high pressure system on winter precipitation over western and southwestern Australia." Australian Meteorological and Oceanographic Journal 61, no. 3 (September 2011): 159–70. http://dx.doi.org/10.22499/2.6103.002.

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Brooke, B. P., J. M. Olley, T. Pietsch, P. E. Playford, P. W. Haines, C. V. Murray-Wallace, and C. D. Woodroffe. "Chronology of Quaternary coastal aeolianite deposition and the drowned shorelines of southwestern Western Australia – a reappraisal." Quaternary Science Reviews 93 (June 2014): 106–24. http://dx.doi.org/10.1016/j.quascirev.2014.04.007.

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Karanovic, Ivana. "A new genus of Candoninae (Crustacea, Ostracoda, Candonidae) from the subterranean waters of southwestern Western Australia." Records of the Western Australian Museum 21, no. 4 (2003): 315. http://dx.doi.org/10.18195/issn.0312-3162.21(4).2003.315-332.

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Mukhopadhyay, C., S. Krishna, Vandana KE, K. Saravu, and R. Balasubramaniam. "Tuberculosis or Melioidosis? - Look Twice in Southwestern Coastal India." SAARC Journal of Tuberculosis, Lung Diseases and HIV/AIDS 9, no. 2 (April 23, 2013): 15–18. http://dx.doi.org/10.3126/saarctb.v9i2.7973.

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Melioidosis is known endemic in many Southeast Asian countries, especially Thailand, and in Northern Australia. The disease was long considered under-recognized in India but has now gained the status of emerging infectious disease here. Increasing isolation of the causitive agent B. pseudomallei is encountered in the recent years from this part of western coastal India. We report one such case of pulmonary melioidosis in an elderly patient misdiagnosed as tuberculosis ending fatally. Prompt microbiological diagnosis prevents the unnecessary Anti-TB treatment or prophylaxis. This was also our first of isolation of B. pseudomallei from endotracheal aspirate. SAARC Journal of Tuberculosis, Lung Diseases & HIV/AIDS; 2012; IX(2) 15-18 DOI: http://dx.doi.org/10.3126/saarctb.v9i2.7973

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C. Calver, M., J. S. Bradley, and I. W. Wright. "Towards scientific contributions in applying the precautionary principle: an example from southwestern Australia." Pacific Conservation Biology 5, no. 1 (1999): 63. http://dx.doi.org/10.1071/pc990063.

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Scientific suspicion of the widely stated precautionary principle is based largely on confusion as to procedures for incorporating scientific data into a philosophical-political process. Here we take published guidelines on applying the precautionary principle and illustrate how they allow scientific input to the question of whether or not current multipleuse forestry takes a precautionary approach to conserving threatened or vulnerable marsupials in the jarrah forest of Western Australia. The scientific input involves (i) identification of outcomes in similar situations elsewhere in Australia, (ii) selection of indicator species for monitoring based on predictions made on the basis of (i) above and published accounts of the species' biology, and (iii) a prescription for monitoring/experimentation that includes a quantitative requirement for a probability of detecting impacts based on statistical power analysis. On the standards suggested, contemporary management falls short of a quantitative definition of precaution that involves adherence to measurable standards.

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Downes, P. J., and A. W. R. Bevan. "Chrysoberyl, beryl and zincian spinel mineralization in granulite-facies Archaean rocks at Dowerin, Western Australia." Mineralogical Magazine 66, no. 6 (December 2002): 985–1002. http://dx.doi.org/10.1180/0026461026660072.

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Abstract A deposit of chrysoberyl (BeAl2O4), including the variety alexandrite, occurs near Dowerin, in the southwestern region of the Archaean Yilgarn Craton, Western Australia. The deposit is situated in the northern part of the Lake Grace Terrain, a crustal component of the southwestern Yilgarn Craton, in granulite-facies gneisses (2640–2649 Ma; T = 700°C, P <6 kbar) adjacent to the margin of the Kellerberrin Batholith (2587±25 Ma). Beryllium mineralization at Dowerin occurs in plagioclase-quartz-biotite-garnet gneiss and cross-cutting tourmaline-plagioclase veins situated adjacent to lenses of actinolite-cummingtonite-phlogopite schist. Crystals of chrysoberyl (0.15–1.74 wt.% Cr2O3; 2.25–3.23 wt.% FeO; trace–0.13 wt.% ZnO; SiO2 <0.05 wt.%) are found embedded in almandine or plagioclase, and closely intergrown with biotite and/or zincian hercynite in the host-rock gneiss. Minor Cr and Fe in the alexandrite variety of chrysoberyl were possibly derived from associated zincian hercynite and/or almandine. Trace beryl (0.04–0.20 wt.% Cr2O3; 0.54–0.71 wt.% FeO; trace– 0.22 wt.% Na2O; 0.1–0.71 wt.% MgO) occurs as anhedral interstital grains between crystals of chrysoberyl, plagioclase and biotite, and as rare inclusions in chrysoberyl. Textural and mineral chemical evidence suggests that chrysoberyl and zincian spinels (chromite to hercynite containing from 2–8 wt.% ZnO) formed during granulite-facies regional metamorphism and probably pre-dated the formation of metamorphic tourmaline-plagioclase veins during the same metamorphic episode. The Be, B and Zn required to form chrysoberyl, beryl, tourmaline and zincian spinels may have been released by metamorphic reactions in host-rock metapelites during prograde granulite-facies metamorphism.

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Kirby, GC, BA Barlow, and S. Habel. "Sex-Ratios in a Gynodioecious Plant Ptilotus obovatus (Gaudich) F-Muell (Amaranthaceae)." Australian Journal of Botany 35, no. 6 (1987): 679. http://dx.doi.org/10.1071/bt9870679.

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Ptilotus obovatus is a gynodioecious perennial shrub with diploid and tetraploid cytotypes and is widespread in arid Australia. This study involved sex ratio counts in colonies of both cytotypes across much of the species range. Samples from diploid colonies had high frequencies of females (>55%) in Western Australia, low frequencies (<41%) in South Australia, and variable frequencies (36-77%) in southwestern Queensland. Tetraploid colonies had the opposite trend with low frequencies of females (<47%) in Western Australia and high frequencies (>54%) in the Northern Territory, South Australia and New South Wales. Ptilotus obovatus appears to be subdivided into at least five biotypes with distinct ploidy levels and sex ratios. We suggest that tetraploidy arose at least twice from diploid ancestors with different sex ratios and that the present distribution of cytotypes may reflect dispersal from refugia after recent arid maxima. The study of the genetics of male sterility in this species was impeded by the remarkably low seed set of plants in glasshouse crosses and in the field.

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WIBOWO, KUNTO, and HIROYUKI MOTOMURA. "Review of the Scorpaena papillosa species complex (Teleostei: Scorpaenidae) with description of a new species from southwestern Australia." Zootaxa 4852, no. 5 (September 18, 2020): 527–46. http://dx.doi.org/10.11646/zootaxa.4852.5.2.

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A taxonomic review of the Scorpaena papillosa species complex, defined here as having 10 dorsal-fin soft rays, coronal spines, and two upwardly directed spines on the lacrimal bone, resulted in the recognition of two species and two subspecies, Scorpaena papillosa (Schneider & Forster, 1801) including two subspecies, i.e., S. papillosa papillosa (New Zealand) and S. papillosa ergastulorum Richardson, 1842a (southeastern Australia), and S. vesperalis n. sp. (southwestern Australia). Scorpaena p. papillosa and S. p. ergastulorum, are redescribed, with designation of a neotype for S. p. papillosa. Scorpaena vesperalis n. sp., described from coastal waters off southwestern Western Australia on the basis of 57 specimens, is characterized as follows: pectoral-fin rays 14–16; longitudinal scale rows 37–41; body depth 32.3–39.5 % of SL; upper-jaw length 19.6–22.5 % of SL; maxilla depth 5.7–7.3 % of SL; postorbital length 18.2–21.3 % of SL; least distance between interorbital ridges 1.4–2.7 % of SL; 1st anal-fin spine length 7.2–10.0 % of SL; anterior lacrimal spine simple, without additional small spinous points on its posterior margin; a single united pore behind the lower jaw symphysial knob; relatively large supraocular tentacle; all fins of preserved specimens usually uniformly whitish to translucent; and small body size (maximum recorded length 67.6 mm SL). The new species is likely endemic to southwestern Australia. Morphological ontogenetic changes in the relative lengths of some body proportions in the three taxa are also discussed.

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Craig, Michael D. "Comparative Ecology of Four Passerine Species in Jarrah Forests Used for Timber Production in Southwestern Western Australia." Conservation Biology 16, no. 6 (December 2002): 1609–19. http://dx.doi.org/10.1046/j.1523-1739.2002.00567.x.

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de BROEKERT, P. P., S. A. WILDE, and A. K. KENNEDY. "Variety, age and origin of zircons in the mid-Cenozoic Westonia Formation, southwestern Yilgarn Craton, Western Australia." Australian Journal of Earth Sciences 51, no. 2 (April 2004): 157–71. http://dx.doi.org/10.1111/j.1440-0952.2004.01052.x.

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Crombie, DS, JT Tippett, and TC Hill. "Dawn Water Potential and Root Depth of Trees and Understorey Species in Southwestern Australia." Australian Journal of Botany 36, no. 6 (1988): 621. http://dx.doi.org/10.1071/bt9880621.

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Water relations of selected tree and understorey species in the jarrah forest of south-western Australia were studied during summer drought and the results related to root morphology. Seasonal patterns of predawn water potential (Ψp) differed between species according to root depth and between sites according to average annual rainfall. Dawn water potentials fell most rapidly and by the greatest amount in plants with the shallowest roots. Dawn water potentials of medium and deep rooted species were not consistently different. Separation of Ψp between sites of different annual rainfall was less marked than was separation by root depth. Changes in Ψp, were consistent with a top-to-bottom drying of the soil profiles. We suggest that measurements of Ψp of plants of appropriate root depth can be used to monitor the drying of soils as an alternative to more expensive mechanical and electrical methods.

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Lee, J. G. H., H. C. Finn, and M. C. Calver. "Ecology of black cockatoos at a mine-site in the eastern jarrah-marri forest, western Australia." Pacific Conservation Biology 19, no. 1 (2013): 76. http://dx.doi.org/10.1071/pc130076.

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Three threatened black cockatoos inhabit the Jarrah Eucalyptus marginata-Marri Corymbia calophylla forest of southwestern Australia: Baudin’s Cockatoo Calyptorhynchus baudinii, Carnaby’s Cockatoo C. latirostris, and Forest Redtailed Black Cockatoo C. banksii naso [FRTBC]. Their local ecology in relation to anthropogenic disturbance is poorly known, hampering effective conservation management. Therefore we studied their group size, site occupancy patterns, habitat use, and food plants at a mine-site and its surrounds in the eastern forest over three years. FRTBC showed similar group sizes and occupancy across seasons, suggesting year-round residency and no marked seasonality in movements and grouping patterns. In contrast, Carnaby’s Cockatoos were up to twice as abundant in spring and summer, indicating migrating or transient flocks and some year-round residents. Few Baudin’s Cockatoos were present in summer, but their abundance increased at other times. All three cockatoos were observed in modified or humanmade habitats such as mine-site rehabilitation, farm paddocks, and pine plantations. Carnaby’s Cockatoos used the broadest habitat range. We documented feeding on 16 plant species, with Carnaby’s Cockatoos eating at least 10. Examination of feeding residues as well as observations of behaviour were essential to obtain a complete picture of feeding. Current mine-site rehabilitation protocols provide food for all three black cockatoos within a decade and should continue to do so long-term if Marri is maintained in the seed mix. However, because climate change scenarios predict declining rainfall over much of southwestern Australia, the plant species used to revegetate mine-sites and other landscapes may need to be reconsidered. For areas that do not specify restoring a jarrah forest landscape, the selective use of exotic or non-endemic flora better adapted to lower rainfall conditions may be an option.

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Harle, Kate J., A. Peter Kershaw, and Henk Heijnis. "The contributions of uranium/thorium and marine palynology to the dating of the Lake Wangoom pollen record, western plains of Victoria, Australia." Quaternary International 57-58 (June 1999): 25–34. http://dx.doi.org/10.1016/s1040-6182(98)00047-0.

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Rose, T. H., D. A. Smale, and G. Botting. "The 2011 marine heat wave off southwest Australia." Ocean Science Discussions 9, no. 2 (April 16, 2012): 1691–703. http://dx.doi.org/10.5194/osd-9-1691-2012.

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Abstract. Over 2000 km of Western Australian coastline experienced a significant marine heat wave in February and March 2011. Seawater temperature anomalies of +2–4 °C were recorded at a number of locations and satellite-derived SSTs were the highest on record. Here, we present seawater temperatures from southwestern Australia and describe, in detail, the marine climatology of Cockburn Sound; a large, multiple-use coastal embayment. We compared temperature and dissolved oxygen levels in 2011 with data from routine monitoring conducted from 2002–2010. A significant warming event, 2–4 °C in magnitude, persisted for >8 weeks, and seawater temperatures at 10 to 20 m depth were significantly higher than those recorded in the previous 9 yr. Dissolved oxygen levels were depressed at most monitoring sites, being ~2 mg l−1 lower than usual in early March 2011. Ecological responses to short-term extreme events are poorly understood, but evidence from elsewhere along the Western Australian coastline suggests that the heat wave was associated with high rates of coral bleaching, fish, invertebrate and macroalgae mortalities, and algal blooms. However, more ecological information from Cockburn Sound and other multiple-use embayments is urgently needed. The 2011 heat wave provided insights into conditions that may become more prevalent in Cockburn Sound, and elsewhere, if the intensity and frequency of short-term extreme events increases as predicted.

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Leckie, D. A., and R. J. Cheel. "The Cypress Hills Formation (Upper Eocene to Miocene): a semi-arid braidplain deposit resulting from intrusive uplift." Canadian Journal of Earth Sciences 26, no. 10 (October 1, 1989): 1918–31. http://dx.doi.org/10.1139/e89-162.

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The Upper Eocene – Miocene Cypress Hills Formation of the Cypress Hills plateau, in southwestern Saskatchewan and southeastern Alberta, is interpreted as a braidplain deposit. The regional paleoslope dipped to the northeast, and the east–west distribution of outcrop exposes facies representing lateral variation across the slope of the braidplain. Overall, the average clast size of the deposits decreases from west to east, with western area sediments dominated by boulder-sized gravels deposited on longitudinal bars. The eastern outcrop area contains deposits of braided channels cut into and interbedded with finer interchannel material including lacustrine marlstones, silcretes, and debris-flow deposits, the latter commonly containing abundant fossils.The gravels of the Cypress Hills Formation are multicyclic; they were originally derived from the western ranges of the Rocky Mountains during Laramide orogenesis and later shed farther into the basin during rebound due to unloading of the Laramide thrusts by erosion. Most recent transport resulted from uplift by intrusive activity of the Sweetgrass Hills, the Bearpaw Mountains, and the Highwood Mountains in northern Montana. Transport from the uplifted source areas was largely restricted to valley-confined rivers with the braidplains beginning beyond the valley termini. The lateral extent of the gravel braidplain was limited by the position of valleys and resulted in the observed variation in facies. Climate, as indicated by the sedimentology, faunal assemblages, silcretes, and palynology, was semi-arid with seasonal rainfall.

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R. Friend, G., and M. R. Williams. "Impact of fire on invertebrate communities in mallee-heath shrublands of southwestern Australia." Pacific Conservation Biology 2, no. 3 (1995): 244. http://dx.doi.org/10.1071/pc960244.

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A three-year study (1989?92) of the responses of invertebrates to fire was carried out in mallee-heath shrublands in the Stirling Range National Park, Western Australia. Abundances were measured at the Order level for major groups, and at the morphospecies level for Coleoptera. Changes in floristics and vegetation structure were monitored over the same period. At the Order level, variation in abundances was attributable more to locality, seasonal and year-to-year effects than to fire. Responses of beetles at the morphospecies level, however, reflected changes due to fire as well those attributable to season and year. Coleoptera and Diptera were most abundant 40 years after fire, Hemiptera and Orthoptera peaked in earlier seral stages, while Hymenoptera and Araneae showed relatively few fire-related trends. Coleoptera and Diptera best reflected changes due to season, year and fire, and together with some Araneae such as mygalomorph spiders, would most likely be suitable groups to consider in future studies. Multivariate analyses indicated that classification to morphospecies level is essential to elucidate changes due to fire. These analyses also indicated that changes in invertebrate abundance and composition did not accord with changes in floristics or vegetation structure. Each set of data therefore represents different facets of change over time, including those due to fire. Comparing our data with contemporaneous information collected in upland areas of the Park indicates that there is a clear dichotomy in the fire sensitivity of species inhabiting the wet gullies and thickets of the mountains and those occupying the seasonally dry lowland mallee-heaths. Fire management strategies need to take account of this dichotomy by protecting relictual fire sensitive species and habitats.

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NIELSEN, JØRGEN G., JOHN J. POGONOSKI, and SHARON A. APPLEYARD. "Aphyonid-clade species of Australia (Teleostei, Bythitidae) with four species new to Australian waters and a new species of Barathronus." Zootaxa 4564, no. 2 (March 6, 2019): 554. http://dx.doi.org/10.11646/zootaxa.4564.2.12.

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During voyages in 2017 off southern and southeastern Australia, the Australian Research Vessel Investigator deployed a series of demersal beam trawls to depths of around 5000 metres. Nineteen specimens of the rarely caught aphyonid-clade of the ophidiiform family Bythitidae, representing five species, were caught. Four of these are new to Australian waters: Barathronus pacificus Nielsen and Eagle, 1974 known from the northeastern and southwestern Pacific Ocean, Paraphyonus bolini (Nielsen, 1974) known from the western Indian and western Pacific Oceans, Paraphyonus rassi (Nielsen, 1975) known from the Atlantic Ocean and Sciadonus pedicellaris Garman, 1899, known from the northeastern Atlantic and northeastern and southwestern Pacific Oceans. Also included are Aphyonus gelatinosus Günther, 1878 known from all oceans including ten specimens from Australian waters, Barathronus maculatus Shcherbachev, 1976 known from South Africa to the westernmost Pacific including 13 specimens from Australian waters, Sciadonus longiventralis Nielsen, 2018 known from the holotype collected off New South Wales and finally Barathronus algrahami n. sp. known from the holotype caught off South Australia and four paratypes from off Taiwan and northern Philippines. Close examination of specimens collected during recent voyages combined with recent and ongoing studies by the first author and DNA COI barcoding analysis enabled an assessment of the aphyonid-clade species hitherto recorded from Australian waters. An identification key to the eight aphyonid clade species known from Australian waters is provided.

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DIXON, KINGSLEY W., and MAARTEN J. M. CHRISTENHUSZ. "Endangered fairies: two new species of Caladenia (Orchidaceae; Orchidoideae; Diurideae), from the bauxite plateaux of southwestern Western Australia." Phytotaxa 334, no. 1 (January 12, 2018): 87. http://dx.doi.org/10.11646/phytotaxa.334.1.15.

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Two new sympatric species of Caladenia from relatively inaccessible, high lateritic plateaux in a high rainfall area in southwestern Western Australia are described here as new to science. The species occur in a restricted area, c 100 km southeast of Perth, south of Dwellingup and northeast of Waroona. The two species co-occur and are associated with putative floral model species that they are mimicking. Caladenia lateritica mimics Conostylis setosa (Haemodoraceae) in terms of flowering time, height, colour and fragrance. Caladenia rosea mimics the flowers of Hypocalymma robustum (Myrtaceae) in terms of flowering time, colour and scent. We assume that these orchids share a pollinator with their mimics and attract the pollinator via food deception as the ‘hosts’ are sources of nectar and pollen for visiting native bees. Because the species co-occur and exhibit a remarkable evolutionary ‘arms race’, they would make an ideal model for further study of the processes driving sympatric speciation. Unfortunately, both new species are under threat from mining activities and poorly informed burning regimes.

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Dentith, Mike, Adam O'Neill, and Dan Clark. "Ground penetrating radar as a means of studying palaeofault scarps in a deeply weathered terrain, southwestern Western Australia." Journal of Applied Geophysics 72, no. 2 (October 2010): 92–101. http://dx.doi.org/10.1016/j.jappgeo.2010.07.005.

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Journal articles on the topic 'Palynology – Western Australia, Southwestern'

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