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| 19th century scientist, developed ecology (eco--> "house", logy-->"study" (greek)) |
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| living environment--> all organisms |
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| nonliving/physical environment |
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| study of the interactions between organisms and their environment |
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| group of organisms of the same species that live together in the same area at the same time |
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all populations of different species that live and interact together within an area at the same time.
>characterized by the number and kinds of species living there |
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| includes all the biotic interactions of a community and the interactions between the organisms and their abiotic environment. includes networks of energy flow |
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| sub-discipline of ecology that studies ecological processes that operate over large areas |
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| spatially heterogeneous region that includes several interacting ecosystems |
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| layer of the earth containing living organisms |
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| organisms position in a food chain determined by its feeding relationships |
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| representation of the interlocking food chains that connect all the organisms in an ecosystem |
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| shows # of organisms at each trophic level in a given ecosystem |
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| illustrates total biomass at each trophic level |
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| GROSS PRIMARY PRODUCTIVITY rate at which energy is captured during photosynthesis. primary b/c plants occupy the first trophic level |
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| NET PRIMARY PRODUCTIVITY productivity after respiration losses are subtracted |
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