秩——丰盛度分布是热带蛾类集合判别的有用工具吗?(英文)

Are rank-abundance distributions a useful tool of assemblage discrimination in tropical moths?

制图并分析秩——丰盛度分布(RADs)是描述物种集合特征的有效方法。研究一直认为,来自不同生境的RADs秩——丰盛度分布倾向于符合不同的模型,如对数序列分布或对数正态分布。我们用从婆罗洲北部收集的63套尺蠖蛾样本数据,给这个想法一个严格的检验。通过对数序列分布和对数正态分布间的二项分布比较及外加另外三个生态位-空间分隔分布的模型间多项分布比较,发现生境干扰或海拔均无法显著地预测最适合的RAD模型。另一方面,样本多样性和在较小程度上的样本大小(个体数)与RAD模型显著相关。我们的结论是,尽管RAD模型拟合有许多其它的有趣应用,但在根据生境类型来判别物种集合方面是无效的。

Plotting and analyzing rank-abundance distributions （RADs） can be useful to characterize species assemblages. It has been suggested that RADs from different habitat types tend to follow different RAD models, such as the logseries or lognormal distribution. We provide a rigorous test of this idea, using a compilation of 63 samples of geometrid moths from northern Borneo. Neither habitat disturbance nor elevation allows significant prediction of the best-fitting RAD model, either through binomial comparisons between the aforementioned distributions or in a multinomial comparison including three further, niche-space partitioning models. Sample diversity, and to a lesser degree sample size （number of individuals）, on the other side, are significantly related to RAD models. We conclude that RAD model fit is not useful to discriminate assemblages according to habitat type, despite many other interesting applications .