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By National Research Council, Division on Earth and Life Studies, Ocean Studies Board, Committee on Ecosystem Effects of Fishing: Phase II - Assessments of the Extent of Change and the Implications for Policy

ISBN-10: 030910050X

ISBN-13: 9780309100502

ISBN-10: 0309654750

ISBN-13: 9780309654753

Fresh clinical literature has raised many issues approximately no matter if fisheries have prompted extra huge alterations to marine populations and ecosystems than formerly discovered or expected. in lots of instances, shares were exploited a ways past administration pursuits, and new analyses point out that fishing has harmed different species - together with marine mammals, seabirds, sea turtles, and sea grasses - both without delay via capture or habitat harm, or in some way via adjustments in food-web interactions. on the request of the nationwide Oceanic and Atmospheric management, the nationwide study Council performed an self reliant research to weigh the collective proof for fishery-induced alterations to marine ecosystems and the results of the findings for U.S. fisheries administration. "Dynamic adjustments in Marine Ecosystems" presents entire details in regard to those findings.

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Extra info for Dynamic Changes in Marine Ecosystems: Fishing, Food Webs, and Future Options

Example text

Fisheries management, identify areas for future research and analysis, and characterize the stewardship implications for living marine resources. S. approach to fisheries management. The findings and recommendations of the committee were based on presentations heard at three public meetings (see Appendix C for meeting agendas), published literature, and their own expertise. This report examines the current scientific evidence for ecosystem effects of fishing, including changes in abundance, biodiversity, and genetic structure of populations; food-web effects such as trophic cascades and species interactions; and both physical and fisheryinduced regime shifts (Chapter 2).

Modeled extinction rates are also greater when recruitment into the fishery occurs prior to maturity. These modeled results match general expectations and suggest that future extinctions may result from high rates of fishing. Hutchings and Reynolds (2004) argue that IUCN (The World Conservation Union) marine-fish extinction criteria (IUCN 2001) should not likely differ from terrestrial plants and animals and freshwater fishes. They back up this statement using analyses of empirical data on recovery probabilities for severely depleted populations.

The interesting questions revolve around their relative influence.

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Dynamic Changes in Marine Ecosystems: Fishing, Food Webs, and Future Options by National Research Council, Division on Earth and Life Studies, Ocean Studies Board, Committee on Ecosystem Effects of Fishing: Phase II - Assessments of the Extent of Change and the Implications for Policy


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