BIOLOGY 1M03 Lecture Notes - Lecture 30: Intermediate Disturbance Hypothesis, Ecological Succession, Primary Succession
6 May 2019
School
Department
Course
Professor
Document Summary
Individualistic hypothesis: the community is a chance assemblage of species with similar habitat requirement, pointed to eastern deciduous forest as an example, argued that co-occurrence of tree species in eastern deciduous forests supports his interactive hypothesis. Santa catalina mountain trees supports the individualistic hypothesis: there were clear patterns that limited the forests, f. e. Clements: interactive hypothesis, the community is an assemblage of stable and integrated species, locked into association by mandatory interactions, argues that the ranges are based on limits of tolerance for the species involved. Some members of communities are bound in various types of interactions (interactive hypothesis: most members of communities share habitats or ecosystems in common because of limits of tolerance of niche dimensions (individualistic hypothesis) Ecological succession and disturbance: communities are not static, ecological succession: non-seasonal and directional pattern of colonisation and extinction on a site by different species, primary succession: begins with a virtually "lifeless" environment, pioneering species.
