We investigated how plant species' responses to soil texture might affect coexistence by analysing distributions, seedling emergence and performance, and competitive abilities of the winter annuals Clarkia speciosa ssp. polyantha and C. xantiana ssp. xantiana.
This paper presents a broad framework for analyzing radical reform in terms of a large set of collective-action problems faced by potential reformers. It merges concepts that often appear separately in the literature, including social preferences, power relationships, policy subsystems, institutional stability, types of institutional change, and types of agents.
Using comprehensive demographic data for two well-studied, short-lived plants (Plantago coronopus, Clarkia xantiana), we show that the arrangement of species' demographic niches reveals key features of their environmental niches and geographic distributions.