Ecological and Evolutionary Diversification Within the Genus <I>Carex</I> (Cyperaceae): Consequences for Community Assembly in Subarctic Fens

The concept of limiting similarity predicts that closely related taxa are less likely to co-occur than expected by chance. The degree to which the phylogenetic relatedness in plant communities is in accord with limiting similarity has been little tested at the scale where the consequences of adaptive differentiation during speciation should be most evident: the scale of neighboring, congeneric plants within a community. To quantify species...