Dynamics of regional distribution: the core and satellite species hypothesis

摘要: A new concept is introduced to analyse species' regional distributions and relate the pattern of niche relations. Several sets data indicate that average local abundance positively correlated with distribution, i.e. fraction patchily distributed population sites occupied by species. This observation not consistent assumptions a model distribution Levins. corrected now presented, in which probability extinction decreasing function stochastic version analysed. If variation rates and/or colonization sufficiently large, species tend fall into two distinct types, termed "core" "satellite" The former are regionally common locally abundant, relatively well spaced-out space, while opposite attributes characterize satellite dichotomy, if it exists, provides null hypotheses test theories about community structure, may help construct better structured theories. Testing core-satellite hypothesis its connection r-K theory Raunkiaer's "law frequency" discussed.