Ecosystem Succession
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. How do the biotic and abiotic components change the equilibrium of the ecosystems?
. Describe how the ecosystems go through the natural cycle of progression.
. Explain some of the mechanisms that can help or hinder an ecosystem's recovery from a disturbance. Use an example from your local area to illustrate your explanation (e.g., grassland or forest fire, overgrazing, over-cultivating, strip mining, and clear-cut logging).
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How the ecosystems go through the natural cycle of progression
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Biotic components are living things, such as plantAbiotic components are non-living things such as light, water, and air, which the living things need to survive. s, animals, and bacteria. There is generally a delicate balance between these two, which results in an equilibrium. When the system is thrown out of equilibrium, then all aspects of the ecosystem are affected until balance is restored. Equilibrium can be restored when animals adapt to the change, or new resources become available. A good exercise for understanding how this works is to choose a nutrient and follow it through an ecosystem. Nitrogen is an interesting example, because the use of fertilizer has upset the equilibrium of nitrogen in many riparian areas. Nitrogen is present in the atmosphere in large quantities, but is unavailable to both plants and animals. Nitrogen must be "fixed" by bacteria which take N2 from the atmosphere and ...
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