期刊
ECOLOGY LETTERS
卷 5, 期 3, 页码 433-444出版社
BLACKWELL PUBLISHING LTD
DOI: 10.1046/j.1461-0248.2002.00335.x
关键词
additive partition; beetle; diversity components; ecoregion; local-regional richness; scale dependence; species diversity
类别
Ecologists frequently regress local species richness on regional species richness to draw inferences about the processes that structure local communities. A more promising approach is to quantify the contributions of alpha and beta diversity to regional diversity (the ABR approach) using additive partitioning. We applied this approach to four local-regional relationships based on data from 583 arboreal beetle species collected in a hierarchically nested sampling design. All four local-regional relationships exhibited proportional sampling, yet the ABR approach indicated that each was produced by a different combination of alpha and beta richness. Using the results of the ABR analysis, we also analysed the scale dependence of alpha and beta using a hierarchical linear model. Alpha diversity contributed less than expected to regional diversity at the finest spatial scale and more than expected at the broadest spatial scale. A switch in relative dominance from beta to alpha diversity with increasing spatial scale suggested scale transitions in ecological processes. Analysing the scale dependence of diversity components using the ABR approach furthers our understanding about the additivity of species diversity in biological communities.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据