Partitioning the turnover and nestedness components of beta diversity
Partitioning the turnover and nestedness components of beta diversity
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DOI：
10.1111/j.1466-8238.2009.00490.x
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发表时间：
2010-01-01
影响因子：
6.4
通讯作者：
Baselga, Andres
中科院分区：
文献类型：
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作者：
Baselga, Andres
AimBeta多样性（群落物种组成的变化）反映了两种不同的现象，即群落的空间物种更替和嵌套，这两种现象分别由两个对立的过程，即物种替换和物种损失引起。本文的目的是提供一个统一的框架，β多样性的评估，解开的贡献空间营业额和嵌套的β多样性patterns.InnovationI推导出一个添加剂的β多样性的分区，提供了两个单独的组件的空间营业额和嵌套的β多样性的总量。我提出了两个家庭的β多样性的措施，成对和多站点的情况。每个家庭包括一个措施会计β多样性的各个方面，这是加性分解成两个措施占纯空间营业额和嵌套组件，分别。最后，我提供了一个案例研究，使用欧洲长角甲虫的相关性解开空间营业额和嵌套patterns.Main conclusionm不同的β多样性模式，以各自的生物现象是必不可少的分析生物多样性的因果关系的过程。因此，β多样性的空间营业额和嵌套组件的分化是至关重要的，我们了解中央地理，生态和保护问题。
AimBeta diversity (variation of the species composition of assemblages) may reflect two different phenomena, spatial species turnover and nestedness of assemblages, which result from two antithetic processes, namely species replacement and species loss, respectively. The aim of this paper is to provide a unified framework for the assessment of beta diversity, disentangling the contribution of spatial turnover and nestedness to beta-diversity patterns.InnovationI derive an additive partitioning of beta diversity that provides the two separate components of spatial turnover and nestedness underlying the total amount of beta diversity. I propose two families of measures of beta diversity for pairwise and multiple-site situations. Each family comprises one measure accounting for all aspects of beta diversity, which is additively decomposed into two measures accounting for the pure spatial turnover and nestedness components, respectively. Finally, I provide a case study using European longhorn beetles to exemplify the relevance of disentangling spatial turnover and nestedness patterns.Main conclusionAssigning the different beta-diversity patterns to their respective biological phenomena is essential for analysing the causality of the processes underlying biodiversity. Thus, the differentiation of the spatial turnover and nestedness components of beta diversity is crucial for our understanding of central biogeographic, ecological and conservation issues.