Climatic niche conservatism and the evolutionary dynamics in species range boundaries: global congruence across mammals and amphibians
Research output: Contribution to journal › Journal article › Research › peer-review
Miguel Á. Olalla-Tárraga1, Linsey McInnes, Luis M. Bini, José A. F Diniz-Filho, Susanne A. Fritz, Bradford A. Hawkins, Joaquín Hortal, C. David L. Orme, Carsten Rahbek, Miguel Á. Rodríguez, Andy Purvis
Location Global; continental land masses excluding Antarctica.
Methods We used nearly complete global distributional databases to estimate the climatic niche conservatism in extant continental mammals and amphibians. We characterized the climatic niche of each species by using a suite of variables and separately investigate conservatism in each variable using both taxonomic and phylogenetic approaches. Finally, we explored the spatial, taxonomic and phylogenetic patterns in recent climatic niche evolution.
Results Amphibians and mammals showed congruent patterns of conservatism in cold tolerance, with assemblages of escapee species (i.e. those escaping most from the climatic constraints of their ancestors) aggregated in the North Temperate Zone.
Main conclusions The relative strength of climatic niche conservatism varies across the variables tested, but is strongest for cold tolerance in both mammals and amphibians. Despite the apparent conservatism in this variable, there is also a strong signal of recent evolutionary shifts in cold tolerance in assemblages inhabiting the North Temperate Zone. Our results thus indicate that distribution patterns of both taxa are influenced by both niche conservatism and niche evolution.
|Journal||Journal of Biogeography|
|Number of pages||11|
|Publication status||Published - 2011|