Structure and Evolution of the Australian Continent

10.1029/gd026 ◽  
1998 ◽  
Keyword(s):  
Australian Continent

Herbicide resistance across the Australian continent

2021 ◽  
Author(s):  
Roberto Busi ◽  
Hugh J. Beckie ◽  
Andy Bates ◽  
Tim Boyes ◽  
Chris Davey ◽  
...  
Keyword(s):  
Herbicide Resistance ◽  
Australian Continent

Late Quaternary change in the mountains of New Guinea

Antiquity ◽  
1995 ◽  
Vol 69 (265) ◽  
pp. 818-830 ◽  
Author(s):  
Geoff Hope ◽  
Jack Golson
Keyword(s):  
Late Quaternary ◽  
New Guinea ◽  
Mountainous Areas ◽  
The South ◽  
Environmental Sequence ◽  
The North ◽  
Australian Continent

At the south and north limits of our region are mountainous areas very different from the open arid spaces of the Australian continent between. In the north, the high country of New Guinea offers a complex and well-studied environmental sequence as the arena for early and puzzling human adaptations, precursor of the extraordinary societies of the island today.

scholarly journals Relationships between Southeast Australian Temperature Anomalies and Large-Scale Climate Drivers

2014 ◽  
Vol 27 (4) ◽  
pp. 1395-1412 ◽  
Author(s):  
Alexandre O. Fierro ◽  
Lance M. Leslie
Keyword(s):  
Large Scale ◽  
Southern Oscillation ◽  
Power Spectra ◽  
Warm Season ◽  
Principal Component ◽  
Temperature Variability ◽  
Maximum Temperature ◽  
Past Century ◽  
Tasman Sea ◽  
Australian Continent

Abstract Over the past century, particularly after the 1960s, observations of mean maximum temperatures reveal an increasing trend over the southeastern quadrant of the Australian continent. Correlation analysis of seasonally averaged mean maximum temperature anomaly data for the period 1958–2012 is carried out for a representative group of 10 stations in southeast Australia (SEAUS). For the warm season (November–April) there is a positive relationship with the El Niño–Southern Oscillation (ENSO) and the Pacific decadal oscillation (PDO) and an inverse relationship with the Antarctic Oscillation (AAO) for most stations. For the cool season (May–October), most stations exhibit similar relationships with the AAO, positive correlations with the dipole mode index (DMI), and marginal inverse relationships with the Southern Oscillation index (SOI) and the PDO. However, for both seasons, the blocking index (BI, as defined by M. Pook and T. Gibson) in the Tasman Sea (160°E) clearly is the dominant climate mode affecting maximum temperature variability in SEAUS with negative correlations in the range from r = −0.30 to −0.65. These strong negative correlations arise from the usual definition of BI, which is positive when blocking high pressure systems occur over the Tasman Sea (near 45°S, 160°E), favoring the advection of modified cooler, higher-latitude maritime air over SEAUS. A point-by-point correlation with global sea surface temperatures (SSTs), principal component analysis, and wavelet power spectra support the relationships with ENSO and DMI. Notably, the analysis reveals that the maximum temperature variability of one group of stations is explained primarily by local factors (warmer near-coastal SSTs), rather than teleconnections with large-scale drivers.

scholarly journals Focus on psychiatry in Australia

2000 ◽  
Vol 176 (1) ◽  
pp. 97-101 ◽  
Author(s):  
Scott Henderson
Keyword(s):  
Ethnic Diversity ◽  
Western Europe ◽  
Marked Change ◽  
Cultural Tradition ◽  
Daily Lives ◽  
The Balkans ◽  
The People ◽  
Large Numbers ◽  
Australian Continent ◽  
Two Generations

Humankind has been present on the Australian continent for at least 40 000, some say 60 000 years, remarkably adapted to the environment and having a cultural tradition appreciated by few Caucasians. White people have been here for only 200 years; and psychiatry for about half of that. We know nothing about the mental health of pre-contact indigenous peoples; but we now know a little about the ways in which mental disorders are explained and treated by traditional methods. In two centuries, the Aboriginal and Torres Strait Islands communities, which are very diverse, have been steadily reduced to become only 1.5% of the population. From settlement in 1788 until the 1950s, most non-aboriginal Australians were of Anglo-Saxon or Celtic origin. Since the Second World War, the pattern of immigration has greatly enriched Australian life, first through large numbers of people from the Mediterranean littoral, Western Europe and the Balkans, and more recently from south-east Asia. Ethnic diversity is now evident in most peoples' daily lives – whom you see in the street, whom you work alongside, who your friends are, what you eat and who you have as patients. So the present Australian population of 18 million has undergone a marked change in demography and lifestyle within only two generations. Like the people, psychiatry is also changing rapidly. Where are the changes taking place? What is it like to be a psychiatrist here at present? Where has there been success and where has there been failure? Where is there lots of action?

Structural diversity of the wood of temperate species of Acacia s.s. (Leguminosae: Mimosoideae)

2013 ◽  
Vol 61 (4) ◽  
pp. 291 ◽  
Author(s):  
Frances Whinder ◽  
Kerri L. Clarke ◽  
Nigel W. M. Warwick ◽  
Peter E. Gasson
Keyword(s):  
New South ◽  
Structural Diversity ◽  
Consistent Difference ◽  
Growth Rings ◽  
Axial Parenchyma ◽  
South Wales ◽  
Great Utility ◽  
Australian Continent ◽  
Qualitative Characters ◽  
Perforation Plates

Acacia s.s. comprises approximately 1020 species (i.e. just under one-third of all mimosoid legumes) and is almost entirely restricted to, although widespread, on the Australian continent. We investigated variation in the wood anatomy of 12 species from temperate New South Wales in a study concentrating on four recognised taxonomic sections (Botrycephalae, Juliflorae, Phyllodineae and Plurinerves), to elucidate which characteristics are consistent within the sections, having removed climatic effect as much as possible. The sections had great utility in species identification, whereas none of the wood characters reflected the hypothesised phylogeny of the genus. The main consistent difference among species was in ray width (uniseriate versus 1–3 cells wide). All species had distinct growth rings. The vessels had alternate vestured pitting and simple perforation plates. Fibres were generally thick-walled, and many fibres had a gelatinous inner wall (tension wood fibres) and were inconsistently distributed. Axial parenchyma was mainly paratracheal, ranging from vasicentric to confluent and varied greatly in abundance. Prismatic crystals were usually present in chambered fibres and axial parenchyma strands, and also varied in abundance. The variation in these qualitative characters obscures taxonomic differences, but may allow inferences to be made about environmental adaptation.

scholarly journals Biodiversity Inventory and Distribution of Metriorrhynchina Net-Winged Beetles (Coleoptera: Lycidae), with the Identification of Generic Ranges

Insects ◽  
2020 ◽  
Vol 11 (10) ◽  
pp. 710
Author(s):  
Ladislav Bocak ◽  
Michal Motyka ◽  
Dominik Kusy ◽  
Renata Bilkova
Keyword(s):  
Solomon Islands ◽  
New Guinea ◽  
The Philippines ◽  
Species Level ◽  
Valid Species ◽  
Distribution Data ◽  
Generic Level ◽  
Biodiversity Inventory ◽  
Australian Continent ◽  
Northern Edge

We reviewed the species-level classification of Metriorrhynchina net-winged beetles to make the group accessible for further studies. Altogether, 876 valid species are listed in a checklist along with known synonyms, combinations, and distribution data. The compilation of geographic distribution showed that Metriorrhynchina is distributed mainly in the Australian region with very high diversity in the islands at the northern edge of the Australian craton, i.e., in the Moluccas and New Guinea (54 and 423 spp. respectively). The neighboring northern part of the Australian continent houses a majority of known Australian species (112 spp.) and the diversity of net-winged beetles gradually decreases to the south (43 spp.). The fauna of Sulawesi is highly endemic at the generic level (4 of 10 genera, 67 of 84 spp.). Less Metriorrhynchina occur in the Solomon Islands and Oceania (in total 22 spp.). The Oriental Metriorrhynchina fauna consists of a few genera and a limited number of species, and most of these are known from the Philippines (51 of 94 Oriental spp.). We identified a high species level turn-over between all neighboring landmasses. The genus-level endemism is high in Sulawesi (4 genera) and New Guinea (11 genera), but only a single genus is endemic to Australia. During the compilation of the checklist, we identified some homonyms, and we propose the following replacement names and a new synonym: Metriorrhynchus pseudobasalis, nom. nov. for M. basalis Lea, 1921 nec M. basalis Bourgeois, 1911; Metriorrhynchus pseudofunestus, nom. nov. for M. funestus Lea, 1921 nec M. funestus (Guérin-Méneville, 1838), Trichalus pseudoternatensis, nom. nov. for T. ternatensis Kleine, 1930 nec T. ternatensis Bourgeois, 1900, Procautires subparallelus, nom. nov. for P. parallelus (Pic, 1926) nec P. parallelus (Bourgeois, 1883), and Cautires pseudocorporaali, nom. nov. for C. corporaali (Pic, 1921: 12), (formerly Odontocerus and Cladophorus) nec C. corporaali (Pic, 1921) (formerly Bulenides, later Cautires). Diatrichalus biroi Kleine, 1943, syn. nov. is proposed as a junior subjective synonym of D. subarcuatithorax (Pic, 1926). Altogether, 161 new combinations are proposed, and 47 species earlier placed in Xylobanus Waterhouse, 1879 transferred from Cautirina to Metriorrhynchina incertae sedis. The study clarifies the taxonomy of Metriorrhynchini and should serve as a restarting point for further taxonomic, evolutionary, and biogeographic studies.

scholarly journals The Australian terrestrial carbon budget

2012 ◽  
Vol 9 (9) ◽  
pp. 12259-12308 ◽  
Author(s):  
V. Haverd ◽  
M. R. Raupach ◽  
P. R. Briggs ◽  
J. G. Canadell ◽  
S. J. Davis ◽  
...  
Keyword(s):  
Fossil Fuels ◽  
Carbon Budget ◽  
Fossil Fuel ◽  
Net Primary Production ◽  
Total Carbon ◽  
Regional Studies ◽  
Australian Continent ◽  
The Mean ◽  
Riverine Export ◽  
Fossil Fuel Emissions

Abstract. This paper reports a study of the full carbon (C-CO2) budget of the Australian continent, focussing on 1990–2011 in the context of estimates over two centuries. The work is a contribution to the RECCAP (REgional Carbon Cycle Assessment and Processes) project, as one of numerous regional studies being synthesised in RECCAP. In constructing the budget, we estimate the following component carbon fluxes: Net Primary Production (NPP); Net Ecosystem Production (NEP); fire; Land Use Change (LUC); riverine export; dust export; harvest (wood, crop and livestock) and fossil fuel emissions (both territorial and non-territorial). The mean NEP reveals that climate variability and rising CO2 contributed 12 ± 29 (1σ error on mean) and 68 ± 35 Tg C yr−1 respectively. However these gains were partially offset by fire and LUC (along with other minor fluxes), which caused net losses of 31 ± 5 Tg C yr−1 and 18 ± 7 Tg C yr−1 respectively. The resultant Net Biome Production (NBP) of 31 ± 35 Tg C yr−1 offset fossil fuel emissions (95 ± 6 Tg C yr−1) by 32 ± 36%. The interannual variability (IAV) in the Australian carbon budget exceeds Australia's total carbon emissions by fossil fuel combustion and is dominated by IAV in NEP. Territorial fossil fuel emissions are significantly smaller than the rapidly growing fossil fuel exports: in 2009–2010, Australia exported 2.5 times more carbon in fossil fuels than it emitted by burning fossil fuels.

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