Ecosystem Succession Paper

University of Phoenix Science 256: People, Science, and the Environment Ecosystem time Paper 31Jan05 Ecosystem 2. Succession Succession is a phenomenon of transition in confederation visible structure and function which is time related and frequently occurs in a somewhat predictable manner. Primary age, (fig 5-4, pg 87) occurs following geological formation of a new, yet barren habitat for village. Such a habitat may be formed by vol dealic activity, prophylactic 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, whence command willows, then alders, then Sitka spruce. After about cc years, a stable spruce-hemlock forest resulted. Secondary ecological succession, (fig 5-5, pg 88) occurs where an existing community is destroyed (i.e. by fire), but since the soil remains, recolonization is much much rapid than colonization during primary succession. Old field succession is a unattackable example of secondary succession (this is what happens to artless 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 accessible by localised extinction), but now this assumption is non so wide held among ecologists.

Succession is related to a turning of factors including the follow ing: Initial colonizers are often characteri! zed by erect dispersal mechanisms. Frequently, they are fugitive species, ineffective to compete rise in established communities but successful Ecosystem 3. in communities without competitors. Naturally, they mustiness be tolerant of the abiotic factors existing in the area. Growth crinkle and size at maturity may also lilting upon success. Activities of the biota themselves may affect the process of succession. Inhibition... If you want to brace a full essay, order it on our website: OrderCustomPaper.com

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