CHAPTER 55 ECOSYSTEMS ECOLOGY

CHAPTER 55 ECOSYSTEMS ECOLOGY - CHAPTER55ECOSYSTEMSECOLOGY

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CHAPTER 55 ECOSYSTEMS ECOLOGY Ecosystem – multiple communities of organisms that live in an area and their chemical and  physical environment. 4 components: Linked by the movement of energy and nutrients - Abiotic environment   energy, water, materials - Primary producers   autotrophs - Consumers   predators (herbivores, carnivores, parasites) - Decomposers   recycle nutrients Equilibrium is not good for ecosystems; they’ve evolved under natural disturbances and are in  constant change Rules of an Ecosystem:  1) Energy flows in through autotrophs and out through organism’s metabolism, energy is  found in decomposers 2) Nutrients cycle and is coupled with stability and resilience (decomposition is the most  important)  Biogeochemical Cycles - The basic elements that occur in living organisms move through the environment in a  series of physical, chemical and biological processes
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This note was uploaded on 04/07/2011 for the course BIOL 104 taught by Professor Bray-speth during the Spring '11 term at Saint Louis.

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CHAPTER 55 ECOSYSTEMS ECOLOGY - CHAPTER55ECOSYSTEMSECOLOGY

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