Superorganisms or loose collections of species? A unifying theory of community patterns along environmental gradients.

ABSTRACT: The question whether communities should be viewed as superorganisms or loose collections of individual species has been the subject of a long-standing debate in ecology. Each view implies different spatiotemporal community patterns. Along spatial environmental gradients, the organismic view predicts that species turnover is discontinuous, with sharp boundaries between communities, while the individualistic view predicts gradual changes in species composition. Using a spatially explicit multispecies competition model, we show that organismic and individualistic forms of community organisation are two limiting cases along a continuum of outcomes. A high variance of competition strength leads to the emergence of organism-like communities due to the presence of alternative stable states, while

SUBMITTER: Liautaud K 

PROVIDER: S-EPMC6642053 | biostudies-literature | 2019 Aug

REPOSITORIES: biostudies-literature