L6 Ecosystems self sustaining mechanisms

Especially mountain ranges fig 5 2 global air

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Unformatted text preview: n CH05-5 Ocean Currents Warm water from the equator flows toward the poles warms landmasses as it passes CH05-6 SelfSustaining Mechanisms in Ecosystems CH05-7 Homeostasis: Maintaining the Balance Homeostasis is a state of relative constancy vital to the survival of organisms Ecosystems have mechanisms that resist change, or help them recover from change helps keep natural systems in a state of relative constancy CH05-8 Factors That Contribute to Ecosystem Homeostasis Numerous biotic and abiotic factors influence the growth of populations Some stimulate growth Others deter growth Ecosystem homeostasis is the result of the interaction of these factors CH05-9 The Resilience of Ecosystems Changes in biotic and abiotic conditions Cascade of effects Systems tend to return to normal over time BUT The ability to resist change = resilience CH05-10 CH05-11 The Resilience of Ecosystems Ecosystem resilience minimizes and sometimes negates the impacts of human actions Human actions can overwhelm the recuperative capacity of natural systems CH05-12 BUT Population...
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This note was uploaded on 04/17/2008 for the course ENVIRON MN 0630.201.0 taught by Professor Lisagreenwood during the Winter '07 term at RIT.

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