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8 Cards in this Set

  • Front
  • Back
Gulf coast hard substrate Natural and Artificial
Oyster reefs, Rigs, Platforms, Sunken ships, Piers, Bulkheads, Jetties.
ABIOTIC factors influencing community structure
Nutrients, Light, Salinity, Wave action, Dessication
BIOTIC factors influencing community structure
Predation/Herbivory, Intra and inter specific competition, species-species interactions
Keystone species
paine 1969, more than just food web interactions, THEIR REMOVAL CHANGES ENTIRE ECOSYSTEM
Classics of keystone species
seastar- Pisaster- along W US coast
sea otter- kelp forests
New ideas in keystone species
sea grasses, oysters
Alternate Stable States
-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
Intermediate Disturbance Hypothesis
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!!!