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Changes In Commercial Catch Sampling And Age Determination Procedures For Pacific Halibut Fishery
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Book Synopsis Changes in Commercial Catch Sampling and Age Determination Procedures for Pacific Halibut Fishery by : Heather L. Gilroy
Download or read book Changes in Commercial Catch Sampling and Age Determination Procedures for Pacific Halibut Fishery written by Heather L. Gilroy and published by . This book was released on 1995 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Changes in Commercial Catch Sampling and Age Determination Procedures for Pacific Halibut, 1982 to 1993 by : Heather L. Gilroy
Download or read book Changes in Commercial Catch Sampling and Age Determination Procedures for Pacific Halibut, 1982 to 1993 written by Heather L. Gilroy and published by . This book was released on 1995 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: The International Pacific Halibut Commission has sampled the commercial catch since the 1930s. Documentation for the years 1982 to 1993 of port coverage, logbook data collected, sampling methods, otolith sample size, the processing of otoliths in the lab, and otolith-related studies are presented in this report. Sampling ports were added as the pattern of landings shifted. Logbook data forms changed to reflect the use of more than one gear type per vessel and the use of non-halibut gear. Also initiated was the collection of information on gear lost or abandoned during the ever shortening openings. Length/age sampling within a port was changed from representing a port proportionally, to representing a vessel's hailed weight proportionally. This change was made in response to the shorter, higher volume unloading periods and was accomplished by changing from systematic sampling of slings (cargo nets) of fish to unbiased random sampling of fish. The total otolith sample size was reduced and sample sizes were set for each management area. Double blind aging was discontinued. Otolith studies relating to glycerin absorption, age validation using oxytetracycline, automated aging, and the use of otoliths to determine sex were undertaken.
Book Synopsis Changes in Commercial Catch Sampling and Age Determination Procedures for Pacific Halibut, 1982 to 1992 by : Heather L. Gilroy
Download or read book Changes in Commercial Catch Sampling and Age Determination Procedures for Pacific Halibut, 1982 to 1992 written by Heather L. Gilroy and published by . This book was released on 1995 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Changes in Commercial Catch Sampling for Pacific Halibut, 1994 to 2009 by : Lara M. Erikson
Download or read book Changes in Commercial Catch Sampling for Pacific Halibut, 1994 to 2009 written by Lara M. Erikson and published by . This book was released on 2011 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Methods of Population Assessment of Pacific Halibut by : Terrance J. Quinn
Download or read book Methods of Population Assessment of Pacific Halibut written by Terrance J. Quinn and published by . This book was released on 1985 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scientific Report written by and published by . This book was released on 1972 with total page 724 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :Hardman, William H Publisher :Seattle, Wash. : International Pacific Halibut Commission ISBN 13 : Total Pages :32 pages Book Rating :4.:/5 (179 download)
Book Synopsis Sampling the Commercial Catch and Use of Calculated Lengths in Stock Composition Studies of Pacific Halibut by : Hardman, William H
Download or read book Sampling the Commercial Catch and Use of Calculated Lengths in Stock Composition Studies of Pacific Halibut written by Hardman, William H and published by Seattle, Wash. : International Pacific Halibut Commission. This book was released on 1965 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Scientific Report - International Pacific Halibut Commission by : International Pacific Halibut Commission
Download or read book Scientific Report - International Pacific Halibut Commission written by International Pacific Halibut Commission and published by . This book was released on 1969 with total page 590 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :United States. Congress. House. Committee on Merchant Marine, Radio, and Fisheries Publisher : ISBN 13 : Total Pages :32 pages Book Rating :4.:/5 (319 download)
Book Synopsis Northern Pacific Halibut Fishery by : United States. Congress. House. Committee on Merchant Marine, Radio, and Fisheries
Download or read book Northern Pacific Halibut Fishery written by United States. Congress. House. Committee on Merchant Marine, Radio, and Fisheries and published by . This book was released on 1932 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Pacific Halibut Fishery Regulations by :
Download or read book Pacific Halibut Fishery Regulations written by and published by . This book was released on 1943 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Movements of Juvenile Halibut in IPHC Regulatory Areas 2 and 3 by : Ray Hilborn
Download or read book Movements of Juvenile Halibut in IPHC Regulatory Areas 2 and 3 written by Ray Hilborn and published by . This book was released on 1995 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: In 1980 and 1981, more than 68,000 juvenile halibut were tagged in the Gulf of Alaska and Southeast Alaska in an effort to obtain estimates of movements of juvenile halibut. In this paper we develop a maximum likelihood method for estimating the movement between International Pacific Halibut Commission (IPHC) regulatory Areas 3B, 3A, 2C, 2B and 2A. In addition to the movement rates, we also estimate the sizespecific natural mortality, tagging mortality and size selectivity for commercial gear in Areas 3B and 3A. We found that all of these parameters could be estimated with low confounding, and that the predicted recovery pattern of tags conforms closely to the observed recoveries. The best fitting model estimates that there are substantial southerly movements of juvenile halibut; for example, we estimate that 17% of fish tagged in 3B would recruit as adults to 2B, and that 25% of fish tagged in 3A would recruit as adults to 2B. Further improvements in the analysis could include smaller spatial scale of analysis, and combining tagging analysis with catch-at-age data.
Book Synopsis Biological Statistics of the Pacific Halibut Fishery, (1) by : William Francis Thompson
Download or read book Biological Statistics of the Pacific Halibut Fishery, (1) written by William Francis Thompson and published by . This book was released on 1930 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Pacific Halibut by : International Pacific Halibut Commission
Download or read book The Pacific Halibut written by International Pacific Halibut Commission and published by Seattle : The Commission. This book was released on 1987 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :Bell, F. H. (Francis Hugh) Publisher :Seattle, Wash. : International Fisheries Commission ISBN 13 : Total Pages :49 pages Book Rating :4.:/5 (15 download)
Book Synopsis Biological Statistics of the Pacific Halibut Fishery, (2) : Effect of Changes in Intensity Upon Total Yield and Yield Per Unit of Gear by : Bell, F. H. (Francis Hugh)
Download or read book Biological Statistics of the Pacific Halibut Fishery, (2) : Effect of Changes in Intensity Upon Total Yield and Yield Per Unit of Gear written by Bell, F. H. (Francis Hugh) and published by Seattle, Wash. : International Fisheries Commission. This book was released on 1934 with total page 49 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Annual Report - International Pacific Halibut Commission by : International Pacific Halibut Commission
Download or read book Annual Report - International Pacific Halibut Commission written by International Pacific Halibut Commission and published by . This book was released on 1993 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Biological Statistics of the Pacific Halibut Fishery (2) Effect of Changes in Intensity Upon Total Yield and Yield Per Unit of Gear by : International Fisheries Commission
Download or read book Biological Statistics of the Pacific Halibut Fishery (2) Effect of Changes in Intensity Upon Total Yield and Yield Per Unit of Gear written by International Fisheries Commission and published by . This book was released on 1930 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Pacific Halibut Fishery Regulations by : International Fisheries Commission
Download or read book Pacific Halibut Fishery Regulations written by International Fisheries Commission and published by . This book was released on 1945 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt:
