12-3-07 - BIO 311D Ecology 12/3/2007 9:04:00 AM dominant...

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BIO 311D 03/12/2007 10:04:00 Ecology dominant species  are those in a community that have the highest abundance  or highest  biomass keystone species  exert an important regulating effect on the species of a  community Video—mushroom Video—rhino apples Video—elephants Video—lion and cheetah and their prey ECOLOGY—MAJOR BIOMES Biomes: terrestrial ecosystems within specific climate ranges cover wide geo areas Key concepts energy from the sun is the initial energy source of nearly all ecosystems interactions among global air circulation patterns, and ocean currents results  in the regional variations in patterns of temperature and rainfall biome is a large unit of land that is characterized by climax vegetation of the  ecosystem within its boundaries water covers more than 71% of the earth’s surface (has ecocsytems also)
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This note was uploaded on 04/07/2008 for the course BIO 311D taught by Professor Reichler during the Fall '08 term at University of Texas at Austin.

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12-3-07 - BIO 311D Ecology 12/3/2007 9:04:00 AM dominant...

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