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8 Cards in this Set
- Front
- Back
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Ecological Stochasticity |
- Unpredictable (random) processes that determine species colonisation and extinction probabilities. - Processes relate to dispersal (indv movement) and habitat area. |
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Stochasticity and Community Structure |
- Species occurance in a community depends on colonisation/extinction within that area. - Determined by Stochastic processes. - Depend on unpredictable processes such as dispersal. |
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Regional Species Pool vs Local Community |
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Habitat Island |
Small patches of habitat surrounded by uninhabitable 'matrix'. Eg forest patches or ocean islands. |
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Colonisation |
How species dispersal abilities interact with patch area and isolation. - Good/ bad dispsersers - Lage/ small patch area - Near vs far = less or more likely to find the patch. |
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Extinction |
When all of one species dies out. Probability of species extinction depends on: - Amount of habitat area - Degree of isolation (inflow of other indvs) |
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Target Area Effect |
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Isolation Effect |
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