6 research outputs found
Additional file 1: of Evolutionary radiations in the species-rich mountain genus Saxifraga L.
Results of prior sensitivity tests and species number comparisons in BAMM (PDF 1143ĂÂ kb
Additional file 4: of Evolutionary radiations in the species-rich mountain genus Saxifraga L.
Results for model fitting of simulated traits in Saxifraga (PDF 416ĂÂ kb
Additional file 5: of Evolutionary radiations in the species-rich mountain genus Saxifraga L.
1. Best scoring GEOSSE models for state-dependent diversification of Saxifraga in QTP region. 2. Parameter estimates for best scoring GEOSSE model for state-dependent diversification of Saxifraga in QTP region (DOCX 35ĂÂ kb
Geological and climatic influences on mountain biodiversity
Mountains are key features of the Earthâs surface and host a substantial proportion of the worldâs species. However, the links between the evolution and distribution of biodiversity and the formation of mountains remain poorly understood. Here, we integrate multiple datasets to assess the relationships between species richness in mountains, geology and climate at global and regional scales. Specifically, we analyse how erosion, relief, soil and climate relate to the geographical distribution of terrestrial tetrapods, which include amphibians, birds and mammals. We find that centres of species richness correlate with areas of high temperatures, annual rainfall and topographic relief, supporting previous studies. We unveil additional links between mountain-building processes and biodiversity: species richness correlates with erosion rates and heterogeneity of soil types, with a varying response across continents. These additional links are prominent but under-explored, and probably relate to the interplay between surface uplift, climate change and atmospheric circulation through time. They are also influenced by the location and orientation of mountain ranges in relation to air circulation patterns, and how species diversification, dispersal and refugia respond to climate change. A better understanding of biosphereâlithosphere interactions is needed to understand the patterns and evolution of mountain biodiversity across space and time