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原文連結
論文資訊
- 類型：已發表論文
- 日期：2008
摘要
Patterns of 物種 turnover are central to the geography of 生物多樣性 and resulting challenges for conservation, but at broad scales remain relatively little understood. Here, we take a first spatially-explicitly and global perspective to link the spatial turnover of 物種 and environments. We compare how major groups of vertebrate ectotherms (amphibians) and endotherms (birds) respond to spatial environmental gradients. We find that high levels of 物種 turnover occur regardless of environmental turnover rates, but environmental turnover provides a lower bound for 物種 turnover. This lower bound increases more steeply with environmental turnover in tropical realms. While bird and amphibian turnover rates are correlated, the rate of amphibian turnover is four times steeper than bird rates. This is the sam
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