1.

Record Nr.

UNINA9910970416003321

Titolo

Improving fish stock assessments / / Committee on Fish Stock Assessment Methods, Ocean Studies Board, Commission on Geosciences, Environment, and Resources, National Research Council

Pubbl/distr/stampa

Washington, D.C., : National Academy Press, 1998

ISBN

9780309174404

0309174406

9780309524322

0309524326

9780585098449

0585098441

Edizione

[1st ed.]

Descrizione fisica

1 online resource (x, 177 pages) : illustrations

Disciplina

333.95/611

Soggetti

Fish stock assessment - United States

Fishery management - United States

Lingua di pubblicazione

Inglese

Formato

Materiale a stampa

Livello bibliografico

Monografia

Note generali

Bibliographic Level Mode of Issuance: Monograph

Nota di bibliografia

Includes bibliographical references (p. 119-127).

Nota di contenuto

Front Matter -- Preface -- Contents -- Executive Summary -- 1 Introduction -- 2 Data -- 3 Assessment Methods -- 4 Harvest Strategies -- 5 Simulations -- 6 Findings and Recommendations -- References -- A Letter of Request -- B Committee Biographies -- C Acronyms and Symbols -- D Checklist for Stock Assessments -- E Description of Age-Structured Simulation Model -- F Letter to Analysts -- G Retrospective Values -- H Information from Interstate Marine Fisheries Commissions and States -- I Model* Results in Terms of Exploitable and Total Biomass -- J Excerpts from the Food and Agriculture Organization Report Precautionary Approach to Fisheries* -- K Uncertainty in Stock Assessment Methods and Models.

Sommario/riassunto

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 data-for example underreporting or changes in the likelihood that fish can be caught with a given type of gear-can seriously degrade the quality of stock assessments. The volume makes recommendations for means to improve stock assessments and their use in fishery management.