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| | USGCRP Seminar: Status and Health of Marine Ecosystems, Fisheries, and Habitat: The Road Ahead |
 | | Ecosystem approaches that are protective of habitat, preserve critical predator-prey relationships, reduce or eliminate bycatches, deal effectively with uncertainties in ocean climate, and fully recognize humans as elements of ecosystems, must ultimately be instituted to sustain high ecosystem productivities, high fisheries yields, and healthy marine ecosystems. |
 | | Most marine fish stocks are not yet overfished; and it is likely, with important exceptions (i.e., estuaries and spawning habitats of anadromous fishes (fish such as salmon, which spawn in fresh waters and live in marine waters), that most marine ecosystems have not yet been irreversibly damaged. |
 | | The toxic effects of chemical contaminants on marine organisms are dependent on bioavailability and persistence, the ability of organisms to accumulate and metabolize contaminants, and the interference of contaminants with specific metabolic or ecological processes. |
| www.usgcrp.gov /usgcrp/seminars/990210FO.html (2306 words) |
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