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Book (series)Measuring and assessing capacity in fisheries. 1. Basic concepts and management options 2004
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No results found.This Fisheries Technical Paper provides an overview of the main concepts involved in the assessment and management of fishing capacity. It discusses why capacity management and the problem of overcapacity have become key issues for fisheries management in the new millennium. The paper explains why overcapacity develops in the fishery and the role that fisheries management has played in contributing to this development in the past. Methods for estimating current and desired levels of capaci ty are discussed in a non-technical manner, and a range of potential indicators of overcapacity is described. The effectiveness of various capacity management programmes that have been applied in various fisheries around the world is also discussed, along with an explanation as to why many of these programmes have been ineffective. Potential management systems that have proven effective in reducing overcapacity are also presented and discussed. -
Book (series)Measuring and assessing capacity in fisheries. 2. Issues and methods 2003
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No results found.This Fisheries Technical Paper provides guidance for the measurement and assessment of fishing capacity, with the aim of facilitating the implementation of the International Plan of Action for the Management of Fishing Capacity. It provides a discussion and overview of the various concepts of capacity and capacity utilization and potential methods for estimating capacity discussed at the FAO Technical Consultation on the Measurement of Fishing Capacity held in Mexico City from 29 Novembe r to 3 December 1999. The paper also introduces some more recent methodologies for examining capacity in fisheries. Its specific objective is to provide the information necessary for developing a widely accepted definition of capacity for fisheries as well as sufficient detail about various methods for estimating capacity to permit an empirical assessment of fishing capacity conditional on the types of data typically available for fisheries. The document initially discusses concepts an d issues necessary for understanding capacity and capacity utilization in fisheries, followed by the primary methods often used to estimate capacity. It also gives empirical examples of how the various approaches can be used to estimate and assess capacity. Finally, a potential framework for assessing overcapacity is presented and discussed. -
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.
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