Download or read book Pacific Coast Groundfish Fishery Management Plan Bycatch Mitigation Program written by and published by . This book was released on 2004 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Technical Report International Pacific Halibut Commission written by and published by . This book was released on 1995 with total page 514 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Global Assessment of Fisheries Bycatch and Discards written by Dayton L. Alverson and published by Food & Agriculture Org.. This book was released on 1994 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors estimate that between 17.9 and 39.5 million tons (average 27.0 million) of fish are discarded each year in commercial fisheries. These estimates are based on a review of over 800 papers. The highest quantities of discards are from the Northwest Pacific while tropical shrimp trawl fisheries generate a higher proportion of discards than any other fishery type, accounting for one third of the global total. Of four major gear groups, shrimp trawls stand alone at the top of the list; bottom trawls, long-lines and pot fisheries come next. The third group consists of Japanese high-seas drift net fisheries, Danish seines and purse seines for capelin. Relatively low levels result from pelagic trawls, small pelagic purse seines and some of high seas drift nets. The authors point to inadequate data to determine the biological, ecological, economic and cultural impacts of discards although economic losses run to billions of dollars. However, it appears most likely that socio-cultural attitudes towards marine resources will guide international discard policies. Techniques to reduce bycatch levels including traditional net selectivity, fishing gear development and time/area restrictions, are discussed. Effort reduction, incentive programmes and individual transferable quotas (that make the vessel responsible for bycatch reduction) are seen as promising avenues for the future. However, quick solutions to the problem are unlikely and much more information is required. The publication includes a diskette with the complete Bycatch Database, which was compiled for the study, and a summary of it.

Download or read book Atlantic Halibut Hippoglossus Hippoglossus and Pacific Halibut H Stenolepis and Their North American Fisheries written by Robert J. Trumble and published by NRC Research Press. This book was released on 1993 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt: Atlantic halibut and Pacific halibut off the Atlantic and Pacific coasts of North America share many biological characteristics. The conventional separation of the halibut into separate species is not uniformly accepted. Reproduction and early life history are nearly identical, although the extensive drift of Pacific halibut eggs and larvae and countermigration as juveniles have not been demonstrated for the Atlantic halibut. Adult halibut undergo migration from winter spawning grounds along the upper continental slope to summer feeding grounds on the continental shelf. The two halibuts show the same pattern of age and growth. They exhibit different trophic selectivity, as small Atlantic halibut consume a higher proportion of invertebrates as samll fish and large Atlantic halibut consume a higher proportion of fish, compared to Pacific halibut. Halibut management in the Atlantic and Pacific varies dramatically. Atlantic halibut in Canada were managed with other groundfish until 1988 and are not managed in the United States. Pacific halibut have been managed by an international commission under treaty between the United States and Canada since 1923. Atlantic halibut have produced from 1000 to 5000 t annually, mainly off Canada, while Pacific halibut have produced 12,000 to 45,000 t, mainly off Alaska. Biological and fishery data are collected more extensively for the Pacific halibut, for which detailed stock assessment is conducted.

Download or read book Sport Fishery Abstracts written by and published by . This book was released on 1989 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Annual Report International Pacific Halibut Commission written by International Pacific Halibut Commission and published by . This book was released on 1981 with total page 696 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Technical Report written by and published by . This book was released on 2000 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fisheries Review written by and published by . This book was released on 1989 with total page 478 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Scientific Report International Pacific Halibut Commission written by International Pacific Halibut Commission (United States and Canada). and published by . This book was released on 1983 with total page 616 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Pacific Halibut Bycatch in the Groundfish Fisheries written by Patrick J. Sullivan and published by Seattle, Wash. : International Pacific Halibut Commission. This book was released on 1994 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Marine Fisheries Review written by and published by . This book was released on 1999 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Aquatic Sciences and Fisheries Abstracts written by and published by . This book was released on 1990-07 with total page 774 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Gulf of Alaska and Bering Sea Aleutian Islands Proposed Individual Fishing Quota Management Alternatives for Halibut Fisheries written by and published by . This book was released on 1991 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Catch and Release in Marine Recreational Fisheries written by Jon Lucy and published by . This book was released on 2002 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Global Assessment of Fisheries Bycatch and Discards written by Dayton L. Alverson and published by Food & Agriculture Organization of the UN (FAO). This book was released on 1994 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors estimate that between 17.9 and 39.5 million tons (average 27.0 million) of fish are discarded each year in commercial fisheries. These estimates are based on a review of over 800 papers. The highest quantities of discards are from the Northwest Pacific while tropical shrimp trawl fisheries generate a higher proportion of discards than any other fishery type, accounting for one third of the global total. Of four major gear groups, shrimp trawls stand alone at the top of the list; bottom trawls, long-lines and pot fisheries come next. The third group consists of Japanese high-seas drift net fisheries, Danish seines and purse seines for capelin. Relatively low levels result from pelagic trawls, small pelagic purse seines and some of high seas drift nets. The authors point to inadequate data to determine the biological, ecological, economic and cultural impacts of discards although economic losses run to billions of dollars. However, it appears most likely that socio-cultural attitudes towards marine resources will guide international discard policies. Techniques to reduce bycatch levels including traditional net selectivity, fishing gear development and time/area restrictions, are discussed. Effort reduction, incentive programmes and individual transferable quotas (that make the vessel responsible for bycatch reduction) are seen as promising avenues for the future. However, quick solutions to the problem are unlikely and much more information is required. The publication includes a diskette with the complete Bycatch Database, which was compiled for the study, and a summary of it.

Download or read book Microsatellite Screening in Pacific Halibut Hippoglossus Stenolepis and a Preliminary Examination of Population Structure Based on Observed DNA Variation written by Lorenz Hauser and published by . This book was released on 2006 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt: Details the initial steps of a study examining the population structure of the eastern Pacific halibut stock. Methods discussed include optimization of a suite of dionucleotide microsatellites and application of those markers in a preliminary analysis of gene frequencies from three sites representing the edges of the geographic range of the stock.

Download or read book Proceedings of the International Symposium on Management Strategies for Exploited Fish Populations written by Gordon H. Kruse and published by Alaska Sea Grant College Program. This book was released on 1993 with total page 864 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fisheries scientists from around the world met in 1992 to examine management practices and discuss strategies for improving management to preserve and/or increase output. This peer-reviewed proceedings includes papers on the role of information in the management process, harvest rate policies for single species fisheries, evaluation of management effectiveness, effects of variability and uncertainty, and socioeconomics and allocation.