scholarly journals Biogeography and speciation of terrestrial fauna in the south-western Australian biodiversity hotspot

2014 ◽  
Vol 90 (3) ◽  
pp. 762-793 ◽  
Author(s):  
Michael G. Rix ◽  
Danielle L. Edwards ◽  
Margaret Byrne ◽  
Mark S. Harvey ◽  
Leo Joseph ◽  
...  
Keyword(s):  
Biodiversity Hotspot ◽  
The South ◽  
Western Australian

scholarly journals Application of a Gondwanan perspective to restore ecological integrity in the south-western Australian global biodiversity hotspot

2016 ◽  
Vol 24 (6) ◽  
pp. 805-815 ◽  
Author(s):  
Grant Wardell-Johnson ◽  
Angela Wardell-Johnson ◽  
Keith Bradby ◽  
Todd Robinson ◽  
Philip W. Bateman ◽  
...  
Keyword(s):  
Ecological Integrity ◽  
Biodiversity Hotspot ◽  
The South ◽  
Global Biodiversity ◽  
Western Australian

Phylogenetic relationships of the heath dragons (Rankinia adelaidensis and R. parviceps) from the south-western Australian biodiversity hotspot

2008 ◽  
Vol 56 (3) ◽  
pp. 159 ◽  
Author(s):  
Jane Melville ◽  
Luke P. Shoo ◽  
Paul Doughty
Keyword(s):  
Habitat Preferences ◽  
Taxonomic Revision ◽  
Biodiversity Hotspot ◽  
Phylogenetic Study ◽  
The South ◽  
Generic Level ◽  
Nuclear Introns ◽  
Eastern Australia ◽  
Morphological Differences ◽  
Western Australian

Although the south-western Australian region is recognised as a global biodiversity hotspot, there are still significant gaps in our understanding of the biodiversity of this region. We present a phylogenetic study of the heath dragons (Rankinia adelaidensis and R. parviceps) from this region, incorporating a 1612-bp section of mtDNA and two nuclear introns, Gapdh (~244 bp) and Enol (~330 bp). In addition, we present a generic-level analysis of three gene regions (mtDNA, Gapdh, BDNF), which provides clear evidence that Rankinia adelaidensis and R. parviceps are not closely related to Rankinia diemensis from eastern Australia. Instead, the heath dragons are strongly supported as forming a clade with the genus Ctenophorus. In addition, we find that there are significant levels of haplotype divergence between currently recognised subspecies of the heath dragons (R. a. adelaidensis, R. a. chapmani, R. p. parviceps, R. p. butleri). We suggest that the genetic divergences between subspecies result from geographic isolation in allopatry owing to habitat preferences, followed by drift and/or selection. On the basis of these deep divergences and consistent morphological differences between subspecies, we recommend elevating all taxa to full species, and provide a taxonomic revision of the genera Rankinia and Ctenophorus.

scholarly journals Climate variability impacts on diversification processes in a biodiversity hotspot: a phylogeography of ancient pseudoscorpions in south-western Australia

2019 ◽  
Vol 186 (4) ◽  
pp. 934-949 ◽  
Author(s):  
Danilo Harms ◽  
J Dale Roberts ◽  
Mark S Harvey
Keyword(s):  
Phylogenetic Analyses ◽  
Distribution Patterns ◽  
Biodiversity Hotspot ◽  
Molecular Dating ◽  
Environmental Niche ◽  
Ecological Niche Models ◽  
The South ◽  
Niche Modelling ◽  
South West ◽  
Western Division

Abstract The south-western division of Australia is the only biodiversity hotspot in Australia and is well-known for extreme levels of local endemism. Climate change has been identified as a key threat for flora and fauna, but very few data are presently available to evaluate its impact on invertebrate fauna. Here, we derive a molecular phylogeography for pseudoscorpions of the genus Pseudotyrannochthonius that in the south-west are restricted to regions with the highest rainfall. A dated molecular phylogeny derived from six gene fragments is used for biogeographic reconstruction analyses, spatial mapping, environmental niche-modelling, and to infer putative species. Phylogenetic analyses uncover nine clades with mostly allopatric distributions and often small linear ranges between 0.5 and 130 km. Molecular dating suggests that the origins of contemporary diversity fall into a period of warm/humid Palaeogene climates, but splits in the phylogeny coincide with major environmental shifts, such as significant global cooling during the Middle Miocene. By testing several models of historical biogeography available for the south-west, we determine that Pseudotyrannochthonius is an ancient relict lineage that principally follows a model of allopatric speciation in mesic zone refugia, although there are derivations from this model in that some species are older and distribution patterns more complex than expected. Ecological niche models indicate that drier and warmer future climates will lead to range contraction towards refugia of highest rainfall, probably mimicking past variations that have generated high diversity in these areas. Their conservation management will be crucial for preserving the unique biodiversity heritage of the south-west.

Establishment and survival of the South African legume Lessertia spp. and rhizobia in Western Australian agricultural systems

2013 ◽  
Vol 370 (1-2) ◽  
pp. 235-249 ◽  
Author(s):  
Macarena Gerding ◽  
John Gregory Howieson ◽  
Graham William O’Hara ◽  
Daniel Real ◽  
Lambert Bräu
Keyword(s):  
South African ◽  
Agricultural Systems ◽  
The South ◽  
Western Australian

scholarly journals Global dispersal and diversification of the genus Schoenus (Cyperaceae) from the Western Australian biodiversity hotspot

2021 ◽  
Author(s):  
Tammy L. Elliott ◽  
Ruan Mazijk ◽  
Russell L. Barrett ◽  
Jeremy J. Bruhl ◽  
Simon Joly ◽  
...  
Keyword(s):  
Biodiversity Hotspot ◽  
Western Australian
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