β‐diversity is often measured through incidence‐based dissimilarity indices, such as the Simpson and Sørensen indices. Multiple‐site versions of these indices, which have been recently developed, enhance the accountability of global heterogeneity relative to the original formulations. However, they are known to be sensitive to the number of sites, which hinders the comparison of β‐diversity between two populations of unequal sizes. Moreover, the populations are never completely measured and the dissimilarity must be estimated from a sample of sites.

中文翻译：

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基于多站点差异的改进的β多样性估计器：从总体中区分样本

β多样性通常通过基于发生率的差异指数来衡量，例如Simpson和Sørensen指数。最近开发的这些指标的多站点版本相对于原始公式，增强了全球异质性的责任感。但是，已知它们对位点数目敏感，这阻碍了两个大小不等的种群之间β-多样性的比较。而且，从未对种群进行完全测量，因此必须从地点样本中估算出差异。