多様性指数 : サンプル・サイズと空間分布に対する関係

概要

論文の詳細を見る
Relationships of several diversity indices to sample size were compared for different spatial distributions of individuals by using a simulation technique based on two universes, each of which conformed to a different model of relative abundance. Three of the parametric indices, including α of the logseries model, were affected less by sample size when the spatial distribution was strongly contagious, while the SHANNON-WIENER index seemed to be relatively free from the effect of sample size in all of the spatial distributions. In the empirical data of two insect communities, the rank-abundance relation changed with sample size, thus reflecting the spatial distribution of individuals. The importance of spatial distribution was emphasized as the third component of species diversity for a sample, in addition to species richness and equitability. If other conditions are equal, a community with uniform spatial distribution must be more diverse than that with contagious distribution.
日本生態学会の論文
1981-09-30