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8 Cards in this Set
- Front
- Back
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Gulf coast hard substrate Natural and Artificial
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Oyster reefs, Rigs, Platforms, Sunken ships, Piers, Bulkheads, Jetties.
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ABIOTIC factors influencing community structure
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Nutrients, Light, Salinity, Wave action, Dessication
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BIOTIC factors influencing community structure
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Predation/Herbivory, Intra and inter specific competition, species-species interactions
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Keystone species
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paine 1969, more than just food web interactions, THEIR REMOVAL CHANGES ENTIRE ECOSYSTEM
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Classics of keystone species
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seastar- Pisaster- along W US coast
sea otter- kelp forests |
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New ideas in keystone species
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sea grasses, oysters
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Alternate Stable States
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-Perturbation disturb species causing a switch- differen communities exist under the same condition
-has to be able to change back -arguments: animals regulate own environment, lack of experimental evidence, may only occur after storm events |
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Intermediate Disturbance Hypothesis
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intermediate disturbance maintaines local diversity and promotes new species. too much disturbance allows accumulation of species and too little allows one species to monoplize. SEE GRAPH ON PAGE 6!!!
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