Effects of range size on species–area relationships
Effects of range size on species–area relationships
复制标题
范围大小对物种-区域关系的影响
DOI：
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复制
发表时间：
2003
期刊：
影响因子：
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通讯作者：
E. White
中科院分区：
文献类型：
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作者：
A. P. Allen;E. White
人们早就知道，当在对数轴上绘制丰富度与面积的关系时，物种与面积关系的斜率在广泛的空间尺度上渐近增加。在大陆到全球范围内，物种与区域的关系在很大程度上取决于物种范围的丰度和大小分布。在这里，我们提出了一个分析模型，该模型明确量化了范围大小对物种-区域关系的影响。该模型显示了范围大小和绘图面积如何相互作用以控制广泛空间尺度上的物种-区域关系的形式。它还展示了空间尺度的变化如何通过改变范围大小和范围丰度对物种丰富度的相对影响来影响生物多样性模式。我们的模型为物种-区域关系的大范围上升提供了解释，但需要做更多的工作来将范围大小、栖息地异质性、个体采样和其他变量的影响纳入一个统一的框架，以解释所有尺度的物种-区域关系。
It has been known for some time that the slope of the species–area relationship increases asymptotically at broad spatial scales when richness is plotted against area on logarithmic axes. At continental to global scales, species–area relationships are determined to a large extent by the abundance and size distribution of species ranges. Here we present an analytical model that explicitly quantifies the effects of range size on species–area relationships. The model shows how range size and plot area interact to control the form of species–area relationships at broad spatial scales. It also demonstrates how changes in spatial scale affect biodiversity patterns by changing the relative influence of range size and range abundance on species richness. Our model provides an explanation for the broad-scale upturn of the species–area relationship, but more work is needed to incorporate the effects of range size, habitat heterogeneity, individual sampling and other variables into a unified framework that can account for species–area relationships at all scales.