Communities - Community Ecology Populations are species in...

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Community Ecology Populations are species in isolation; communities: all the populations in a given area Vital Statistics of a Community -Diversity and number of species -Interactions between species -Dominant Vegetation -Stability -Trophic Structure feeding structure - Ecological dominants: those that are obvious and abundant and can affect the structure of a community - Keystone Species: a species whose absence would bring about a significant change in the community (does not have to be a top predator…) Very important for the structure of the environment and changes the entire ecosystem; topples the balance for example…Starfish (top tide-pool predators) Habitat refers to physical surroundings - influenced by: temperature, moisture, pH Niche: 1) Activities and relationships a species engages in to secure and use resources (food, habitat) necessary for survival and reproduction (behavior) 2) The sum total of a population’s use of biotic and abiotic resources in an environment. 3) How the organism “fits into” an ecosystem; its ecological role…
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This note was uploaded on 04/29/2008 for the course BIOLOGY 102 taught by Professor Guffey during the Spring '08 term at University of Tennessee.

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Communities - Community Ecology Populations are species in...

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