kt sec4
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Created by:
skyler_aiello on February 1, 2011
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20 terms
Terms | Definitions |
|---|---|
 coral reefs | Prominent oceanic features composed of hard, limy skeletons produced by coral animals; usually formed along edges of shallow, submerged ocean banks or along shelves in warm, shallow, tropical seas |
| estuaries | The lower end of a river, where it meets ocean. Saltwater and freshwater mix here. Estuaries are known to be very productive. |
| deep-ocean floor | dark but rich in biodiversity area of the ocean |
| commercial extinction | Depletion of the population of a wild species used as a resource to a level at which it is no longer profitable to harvest the species. |
| by catch | unwanted marine creatures that are caught in the nets while fishing for another species |
| cetaceans | marine mammals: dolphins and whales |
| toothed whales | group under Cetaceans; killer whales, porpoises, dolphins. Bite and chew their food and feed on small marine animals |
| baleen whales | feed on plankton, no teeth, baleen filters. ex blue, gray, humpback |
| marine reserves | Marine area where no extraction of any resources are allowed, biotic or abiotic. |
| AEM | adaptable solutions that preserve biodiversity and environmental quality while meeting economic needs |
| Maximum Sustainable Yield | largest amount of fish that can be taken from a population without threatening its future size (mathematical model) |
| Optimum sustainable yield | largest yield of a renewable resource used over a long period of time without limiting ability of that population. |
| Multispecies management | accounts their competitive and predator prey interactions |
| precautionary principle | When there is scientific uncertainty about potentially serious harm from chemicals or technologies, decision makers should act to prevent harm to humans and the environment. See pollution prevention. |
| exclusive economic zone | sea zone over which a state has special rights over the exploration and use of marine resources |
| Individual transfer quotas | Total allowable catch |
| mitigation banking | current policy in which wetlands must have zero "net loss," which means some wetlands can be destroyed as long as equal amount is created or restored |
| wild rivers | rivers that are relatively inaccessible and untamed |
| scenic rivers | free pf dams, undeveloped, accessible rivers |
| recreational rivers | readily accessible and may have some developments |
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