Ecosystem Structure: Plant CommunitiesThe plant community usually is the largest visible part of an ecosystem, and often both the community and the ecosystem are named for the dominant plants present—that is, the plants that, by virtue of their size or numbers, modify and control the environment. The community is not a haphazard collection of organisms, but consists of populations of individuals whose tolerance ranges—the range of environmental conditions in which individuals of a particular species will grow—match those of the site. SuccessionEven the most stable ecosystems are in constant, normal flux. One of the easiest ecological processes to observe is succession, the change in the composition of the vegetation of a particular site over time. Two kinds occur. Primary succession takes place on newly exposed surfaces such as might appear after a volcanic eruption or following a rockslide in the mountains.
This is the end of the preview.
access the rest of the document.
Ecological succession, Primary Succession, bare ground., newly exposed surfaces