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No Thumbnail AvailableBook (series)Status of Interactions of Pacific Tuna Fisheries in 1995
Proceeding of the Second FAO Expert Consultation on Interactions of Pacific Tuna Fisheries Shimizu, Japan 23 to 31 January 1995
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No results found.This publication includes forty papers and two abstracts of papers presented at the Second FAO Expert Consultation on Pacific Tuna Fisheries held in Shimizu, Japan, from 23 to 31 January 1995. The topics of the papers include: · reviews of tuna fisheries interactions and their research including methods for their study, · new methods for studying tuna fisheries interactions and examination of their applicability, · case studies on tuna fisheries interactions, · analyses of tuna fisheri es involved in interactions and their management, and · an overview of FAO’s project that co-organized and co-sponsored the Consultation. A supplement of an indexed bibliography of papers on tuna and billfish tagging, which was printed separately, is also included. The objectives of the Consultation were to: · review and integrate the outcome of the studies on tuna fisheries interactions, · summarize the extent of tuna fisheries interactions and unresolved research problems, and · fo rmulate guidelines for research on tuna fisheries interactions. The understanding of tuna fisheries interactions was enhanced significantly by recent studies. However, the Consultation noted that the number of quantified interactions is still small due primarily to difficulties associated with evaluating such interactions. The papers providing supporting information for the conclusions of the Consultation are presented in this publication. Interactions were found to vary in significance depend ing on the biological characteristics of the species involved, the sizes of fish caught, the local and stock-wide rates of exploitation, and the distance among fisheries. In many of the studies presented, the inadequacy of fisheries data was stressed. In addition, the lack of understanding of movements of the fish being studied was noted in several papers. General qualitative guidelines presented in several discussion papers stressed that specifically-designed studies be undertaken to adequately quantify interactions. Well-designed tagging experiments were thought to provide the most reliable information about interactions. Guidelines for the collection of data, biological and ecosystem research, modelling, and alternative methodologies for studying tuna fisheries interactions are also included. -
No Thumbnail AvailableBook (series)Predator-prey relationships, population dynamics and fisheries productivities of large African lakes. 1988
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No results found.This volume contains 11 papers prepared on the theme of predator-prey relationships, population dynamics and fisheries productivities of African Lakes. The lakes include Malawi, Tanganyika, Victoria, Kivu, Kioga and Abaya as well as Kariba Reservoir. The papers were prepared for the FAO Committee for Inland Fisheries of Africa Working Group on Stock Assessment, Third Session held in Lusaka, Zambia in September 1985. Studies on the biological productivity of Lake Tanganyika are reviewed wit h emphasis on the assessment of the lake's trophic status and its sustained fish production potential. Results have suggested that the lake has a high carbon transfer efficiency at a low rate of primary production, thus it is capable of sustaining high fish yields. However, if sound decisions are to be made on the management of Lake Tanganyika's fisheries, further research will be required on the long term fluctuations in predator and prey abundance and on fish migration patterns. -
No Thumbnail AvailableProjectAppraisal of the sturgeon and seatrout fisheries and proposals for a rehabilitation programme 1989
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No results found.This report was prepared during the course of the project identified on the title page. The conclusions and recommendations given in the report are those considered appropriate at the time of its preparation. They may be modified in the light of further knowledge gained at subsequent stages of the project. The designations employed and the presentation of the material in this document do not imply the expression of any opinion whatsoever on the part of the United Nations or the Food and Agricu lture Organization of the United Nations concerning the legal or constitutional status of any country, territory or sea area, or concerning the delimitation of frontiers.
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