Ecosystem Succession Paper

University of Phoenix Science 256: People, Science, and the Environment Ecosystem sequence Paper 31Jan05 Ecosystem 2. Succession Succession is a phenomenon of transition in federation visible structure and function which is time related and frequently occurs in a somewhat predictable manner. Primary episode, (fig 5-4, pg 87) occurs following fundamental law of a new, yet barren habitat for village. Such a habitat may be formed by vol dealic activity, dick 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, accordingly command willows, then alders, then Sitka spruce. After about two hundred years, a stable spruce-hemlock forest resulted. Secondary 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 pri mary succession. Old field succession is a unattackable example of secondary succession (this is what happens to untaught 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 lendable by localised extinction), but now this assumption is non so wide held among ecologists.

Succession is related to a add of factors including the following: Init ial colonizers are often characterized by d! angerous dispersal mechanisms. Frequently, they are fugitive species, ineffective to compete advantageously in established communities but successful Ecosystem 3. in communities without competitors. Naturally, they essential be tolerant of the abiotic factors existing in the area. Growth grade and size at maturity may also percipient upon success. Activities of the biota themselves may affect the process of succession. Inhibition... If you want to conjure a full essay, order it on our website: OrderCustomPaper.com

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