NASA Authorization for Fiscal Year 1981

NASA Authorization for Fiscal Year 1981
Author: United States. Congress. Senate. Committee on Commerce, Science, and Transportation. Subcommittee on Communications
Publisher:
Total Pages: 1522
Release: 1980
Genre: United States
ISBN:

Improving Fish Stock Assessments

Improving Fish Stock Assessments
Author: National Research Council
Publisher: National Academies Press
Total Pages: 194
Release: 1998-02-27
Genre: Technology & Engineering
ISBN: 0309174406

Ocean harvests have plateaued worldwide and many important commercial stocks have been depleted. This has caused great concern among scientists, fishery managers, the fishing community, and the public. This book evaluates the major models used for estimating the size and structure of marine fish populations (stock assessments) and changes in populations over time. It demonstrates how problems that may occur in fisheries dataâ€"for example underreporting or changes in the likelihood that fish can be caught with a given type of gearâ€"can seriously degrade the quality of stock assessments. The volume makes recommendations for means to improve stock assessments and their use in fishery management.

Sustaining Marine Fisheries

Sustaining Marine Fisheries
Author: National Research Council
Publisher: National Academies Press
Total Pages: 189
Release: 1999-03-19
Genre: Technology & Engineering
ISBN: 0309055261

Fluctuations and declines in marine fish populations have caused growing concern among marine scientists, fisheries managers, commercial and recreational fishers, and the public. Sustaining Marine Fisheries explores the nature of marine ecosystems and the complex interacting factors that shape their productivity. The book documents the condition of marine fisheries today, highlighting species and geographic areas that are under particular stress. Challenges to achieving sustainability are discussed, and shortcomings of existing fisheries management and regulation are examined. The volume calls for fisheries management to adopt a broader ecosystem perspective that encompasses all relevant environmental and human influences. Sustaining Marine Fisheries offers new approaches to building workable fisheries management institutions, improving scientific data, and developing management tools. The book recommends ways to change current practices that encourage overexploitation of fish resources. It will be of special interest to marine policymakers and ecologists, fisheries regulators and managers, fisheries scientists and marine ecologists, fishers, and concerned individuals.