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首页> 外文期刊>Current Science: A Fortnightly Journal of Research >AVALANCHE INDEX - A NEW MEASURE OF BIODIVERSITY BASED ON BIOLOGICAL HETEROGENEITY OF THE COMMUNITIES
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AVALANCHE INDEX - A NEW MEASURE OF BIODIVERSITY BASED ON BIOLOGICAL HETEROGENEITY OF THE COMMUNITIES

机译：雪崩指数-一种基于社区生物异质性的生物多样性新测量

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摘要

A variety of indices are available to quantify the diversity of biological communities. All these indices assume that biological diversity can be satisfactorily described by two major components viz., the number of species and their relative abundances. These indices treat all species as equivalent and ignore taxonomic, morphological, or any such biological differences among species of a community. However, two biological communities with similar number and frequencies of species could differ, for instance, with respect to the taxonomic diversity of the constituent species. A common opinion among ecologists has been that any measure of biodiversity should incorporate biological differences among species or the heterogeneity of the community as an important component. In this paper we propose a new measure of diversity, the 'Avalanche index', which in addition to species numbers and frequencies, also uses the biological and ecological differences among species comprising a community. The index attempts to integrate, over all possible species combinations, the biological differences among species in proportion to their frequencies in the community. We use this index to measure the biodiversity of a set of samples of dung beetles and discuss its merits and problems compared to other indices that are being widely used. [References: 7]
机译：可以使用多种指数来量化生物群落的多样性。所有这些指数均假定可以通过两个主要组成部分即物种数量及其相对丰度来令人满意地描述生物多样性。这些指数将所有物种都视为等同物种，而忽略了社区物种之间的分类学，形态学或任何此类生物学差异。但是，具有相同数量和物种频率的两个生物群落可能会有所不同，例如，就组成物种的分类多样性而言。生态学家普遍认为，对生物多样性的任何衡量均应将物种之间的生物差异或社区的异质性纳入重要组成部分。在本文中，我们提出了一种新的多样性度量，即“雪崩指数”，该指数除物种数量和频率外，还利用组成一个群落的物种之间的生物学和生态差异。该指数试图在所有可能的物种组合中，按照物种在社区中的出现频率，整合物种之间的生物学差异。我们使用该指数来衡量一组be虫样品的生物多样性，并与广泛使用的其他指数进行比较，讨论其优缺点。 [参考：7]

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