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Definition
| two species that have exactly the same requirements cannot coexist in exactly the same habitat |
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| species that plays roles affecting many other organisms in an ecosystem (ie. fig tree whose fruit is necessary for survival of numerous animal species) |
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| species that migrate into an ecosystem or are deliberately or accidently introduced into an ecosystem by humans (ie. native of Russian lakes, zebra mussels that clog waterways around Detroit; E. coli bacteria found in human intestine) |
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| species that are found in almost anywhere on Earth |
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| species that is found in only one area; such species are vulnerable to extinction (ie. Monterey pine, found only on portion of California coast) |
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| species that serve as early warnings that a community or ecosystem is being degraded |
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| initial establishment and development of an ecosystem |
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| reestablishment of an ecosystem where there are remnants of a previous biological community |
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| final stage of ecological succession or a stage in ecological succession during which an ecological community achieves the greatest biomass or diversity |
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| has few offspring each time, cares for young and has high expectations for the survival of the offspring |
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| has masses of offspring, not much parental care, may die after reproducing |
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| expressed as a change in an organism because of a molecular DNA base change |
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Definition
| variability in the genetic makeup among individuals within a single species |
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| complex feeding patterns for consumers in an ecosystem; interconnected food chains |
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Definition
| environmental conditions lead unrelated species to look like each other |
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Definition
| number of identified and named species |
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Definition
| number of identified and named species |
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Definition
| total number of different species contained in a community |
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Definition
| abundance of individuals within each species contained in a community |
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| species with a broad ecological neiche' can live in many different places, eat variety of foods, and tolerate wide range of environmental conditions (ie. flies, cockroaches, mice humans) |
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