Data from: Ecological opportunity and the evolution of habitat preferences in an arid-zone bird: implications for speciation in a climate-modified landscape
Norman, Janette A., Southern Cross University
Christidis, Les, Southern Cross University
Published Oct 27, 2016 on Dryad.
Cite this dataset
Norman, Janette A.; Christidis, Les (2016). Data from: Ecological opportunity and the evolution of habitat preferences in an arid-zone bird: implications for speciation in a climate-modified landscape [Dataset]. Dryad. https://doi.org/10.5061/dryad.0b43t
Bioclimatic models are widely used to investigate the impacts of climate change on species distributions. Range shifts are expected to occur as species track their current climate niche yet the potential for exploitation of new ecological opportunities that may arise as ecosystems and communities remodel is rarely considered. Here we show that grasswrens of the Amytornis textilis-modestus complex responded to new ecological opportunities in Australia’s arid biome through shifts in habitat preference following the development of chenopod shrublands during the late Plio-Pleistocene. We find evidence of spatially explicit responses to climatically driven landscape changes including changes in niche width and patterns of population growth. Conservation of structural and functional aspects of the ancestral niche appear to have facilitated recent habitat shifts, while demographic responses to late Pleistocene climate change provide evidence for the greater resilience of populations inhabiting the recently evolved chenopod shrubland communities. Similar responses could occur under future climate change in species exposed to novel ecological conditions, or those already occupying spatially heterogeneous landscapes. Mechanistic models that consider structural and functional aspects of the niche along with regional hydro-dynamics may be better predictors of future climate responses in Australia’s arid biome than bioclimatic models alone.
Atriplex ITS sequences
Aligned Atriplex ITS sequences in nexus format with indels removed or treated as missing data. The datafile includes 33 of the 58 native Australian species. Three representatives of the genus Halimione are included as outgroups.
Australian Camphorosmeae ITS sequences
Alignment of the Australian Camphorosemeae ITS sequences in nexus format. Indels have been removed or treated as missing data. The datafile contains 33 of the 145 native Australian species along with three outgroups; Kochia melanoptera, Kochia krylovii and Bassia dasyphylla.
Mitochondrial ND2 sequences for the Amytornis textilis-modestus complex
Alignment of 74 ND2 sequences for the Amytornis textilis-modestus species complex. Sequences are coded by their GenBank accessions as described by Austin et al (2013). The datafile also includes four outgroup sequences; Amytornis purnelli, A. ballarae, A. housei and A. goyderi.