10 10 07

10 10 07 - Biotic • Autotrophs are producers •...

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10/10/07 Test will end at Tuesday at 1:00 Paper due on Friday at midnight…bleck Ecological Facts of Life!! Scope of Ecology Community Stability and Diversity Primary Succession-Starts on areas devoid of soil Secondary succession-starts with pioneer species in areas where there already is soil (ex. a field after a fire) Ex. grass=> low shrub=> shrub=> tall shrub=> trees=> tall trees Biotic—living Populations of organisms in an ecosystem Abiotic--nonliving Water, temperature, wind
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Unformatted text preview: Biotic • Autotrophs are producers • Heterotrophs are consumers Consumers • Herbivores-plants • Carnivores-animals • Omnivores-both • Decomposers-dead things • Detritus is partially decomposed organic matter eaten by detritus feeders Energy flow- sun to producers Chemical cycle- inorganic nutrients pass from producers through consumers Know the nature of an ecosystem picture!!!!! Energy flow follows laws of thermodynamics...
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10 10 07 - Biotic • Autotrophs are producers •...

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