Ecosystem Succession Paper

University of Phoenix Science 256: People, Science, and the Environment Ecosystem successiveness Paper 31Jan05 Ecosystem 2. Succession Succession is a phenomenon of transition in lodge bodily structure and function which is time related and frequently occurs in a somewhat predictable manner. Primary date, (fig 5-4, pg 87) occurs following composition of a new, yet barren habitat for village. Such a habitat may be formed by vol dealic activity, frozen activity, or strip-mining; it initially lacks soil. A study of Glacier Bay, AL, showed that following go to bed of the glacier, the ground was first colonized by mosses and lichens, thus command willows, then alders, then Sitka spruce. After about two hundred years, a stable spruce-hemlock forest resulted. Secondary epoch, (fig 5-5, pg 88) occurs where an existing community is destroyed (i.e. by fire), but since the soil remains, recolonization is much to a greater extent rapid than colonization during primar y succession. Old field succession is a unattackable example of secondary succession (this is what happens to inelegant land afterwards farming stops). Once it was thought that succession normally resulted in a stable, diverse community in the climax suppose (this state is often described as the condition whereby the tissue in species interactions becomes so intricate that no additional species can fit into the community unless niches become visible(prenominal) by localised extinction), but now this assumption is not so wide held among ecologists.

Succession is related to a descend of factors including the fol lowing: Initial colonizers are often charact! erized by intimately dispersal mechanisms. Frequently, they are fugitive species, ineffective to compete hygienic in established communities but successful Ecosystem 3. in communities without competitors. Naturally, they must(prenominal) be tolerant of the abiotic factors existing in the area. Growth run down and size at maturity may also fire up upon success. Activities of the biota themselves may affect the process of succession. Inhibition... If you want to rouse a full essay, order it on our website: OrderCustomPaper.com

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