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PAPERBACK + PDF your price: $55.00 add to cart PAPERBACK list:$47.00 Web:$42.30 add to cart PDF BOOK your price: $36.00 add to cart PDF CHAPTERS your price: $3.30 select Rights & Permissions Free Resources PDF Report Brief PDF EXECUTIVE SUMMARY Display this book on your site! Related Titles Developing a Research and Restoration Plan for Arctic-Yukon-Kuskokwim (Western Alaska) Salmon Dynamic Changes in Marine Ecosystems: Fishing, Food Webs, and Future Options Other Related Titles The Decline of the Steller Sea Lion in Alaskan Waters: Untangling Food Webs and Fishing Nets (2003) Ocean Studies Board (OSB) Polar Research Board (PRB) Web Search Builder Use this book's key terms to search within this book, across our collection, or across the Web. Skim This Chapter Skim this chapter and use this chapter's key terms to search within this book. Reference Finder Paste in your own text to find books that relate to your topic. Page 188   E-mail  Facebook  Digg  Stumble  Twitter More The following HTML text is provided to enhance online readability. Many aspects of typography translate only awkwardly to HTML. Please use the page image as the authoritative form to ensure accuracy. APPENDIX C Glossary Acceptable biological catch (ABC)— a preliminary description of acceptable harvest (or range of harvests) for a given stock or stock complex. Its derivation focuses on the status and dynamics of the stock, environmental conditions, other ecological factors, and prevailing technological characteristics of the fishery. The fishing mortality rate used to calculate ABC is constrained to be lower than rates associated with overfishing. Catch per unit effort (CPUE)— an index showing the ratio of a catch of fish, in numbers or in weight, and a standard measure of the fishing effort expended to catch them. Maximum sustainable yield (MSY)— the largest average catch or yield that can be continuously taken from a stock under existing environmental conditions. Metapopulation— a set of local populations in some larger area, where migration between patches is possible (Hanski and Simberloff, 1997). Odobenids— one of the three families of pinnipeds. This family is primarily made up of walruses. Otariids— one of the three families of pinnipeds. This family is primarily made up of sea lions and fur seals. Page 188 Front Matter (R1-R12) Executive Summary (1-13) 1. Introduction (14-25) 2. The Environmental Setting (26-38) 3. Identifying Clues and Testing Hypotheses (39-56) 4. Review of Steller Sea Lion Biology (57-76) 5. Fisheries (77-111) 6. Steller Sea Lion Decline: Environmental Context and Compendium of Evidence (112-151) 7. Information Needs and Recommendations (152-160) References (161-178) Appendix A: Committee and Staff Biographies (179-185) Appendix B: Acronyms (186-187) Appendix C: Glossary (188-189) Appendix D: Early Account of Steller Sea Lions (190-192) Appendix E: Federal Funding Summary (193-193) Appendix F: Meeting Agendas (194-199) Appendix G: National Research Council Project Oversight Boards (200-202) Appendix H: Guide to the Common and Scientific Names of Marine Mammal, Fish, Invertebrate, and Bird Species (203-204)

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OCR for page 188
APPENDIX C Glossary Acceptable biological catch (ABC)— a preliminary description of acceptable harvest (or range of harvests) for a given stock or stock complex. Its derivation focuses on the status and dynamics of the stock, environmental conditions, other ecological factors, and prevailing technological characteristics of the fishery. The fishing mortality rate used to calculate ABC is constrained to be lower than rates associated with overfishing. Catch per unit effort (CPUE)— an index showing the ratio of a catch of fish, in numbers or in weight, and a standard measure of the fishing effort expended to catch them. Maximum sustainable yield (MSY)— the largest average catch or yield that can be continuously taken from a stock under existing environmental conditions. Metapopulation— a set of local populations in some larger area, where migration between patches is possible (Hanski and Simberloff, 1997). Odobenids— one of the three families of pinnipeds. This family is primarily made up of walruses. Otariids— one of the three families of pinnipeds. This family is primarily made up of sea lions and fur seals.

OCR for page 189
Phocids— one of the three families of pinnipeds. This family is primarily made up of true seals. Recruitment overfishing— the rate of fishing above which recruitment to the exploitable stock becomes significantly reduced. This is characterized by a greatly reduced spawning stock, a decreasing proportion of older fish in the catch, and generally very low recruitment year after year. Spawning stock biomass (SSB)— the total weight of all sexually mature fish in the population. This quantity depends on year-class abundance, the exploitation pattern, the rate of growth, fishing and natural mortality rates, the onset of sexual maturity, and environmental conditions. Total allowable catch (TAC)— an annually determined catch that is species specific and based on consideration of maximum sustainable yield, equilibrium yield, and optimum yield for the groundfish complex as a whole.

Representative terms from entire chapter:

sustainable yield