Vegetational mosaics, plant—animal interactions and resources for plant growth

摘要: Herbivores shape both the structure and dynamics of terrestrial aquatic communities, a topic considerable interest to Stebbins (1981). They act as agents natural selection in evolution life histories plants. Species richness, their abundance physical environment are all affected by herbivore activity (Harper, 1977; Rosenthal Janzen, 1979; Crawley, 1983). Frequently, spatial temporal heterogeneity vegetation is direct consequence foraging disturbance animals (Paine Levin 1981; Sousa, 1984; Pickett White, 1985). As will be indicated later, may predator (removal plants or seeds), parasite (partial reduction plant biomass), it promote some form mutualistic association with same species community, depending on seasonal conditions (Crawley,