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  •   SEAFDEC Institutional Repository (SIR)
  • 01 SEAFDEC Publications
  • 04 Technical Publications and Reports on Fishery Management and Enhancement
  • Fisheries Management Concept and Approaches
  • SEAFDEC/TD
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  •   SEAFDEC Institutional Repository (SIR)
  • 01 SEAFDEC Publications
  • 04 Technical Publications and Reports on Fishery Management and Enhancement
  • Fisheries Management Concept and Approaches
  • SEAFDEC/TD
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Catch and Effort Data

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TD-TRB-26.PDF (2.635Mb)
Date
1982-03
Author
Hayase, Shigeo
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28
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Abstract
The objectives of studies on fish population are as follows; firstly, to make a diagnosis of the past and present situation of a stock and give an adequate foundation for optimum yield; secondly, to make a good estimate of the future situation of a sock, and thirdly, to enhance the productivity of a stock if possible.

In order to diagnose the present situation of a stock, information on fluctuations in productivity of fisheries is of vital importance. Such information can be obtained from the fisheries statistics data which are mainly compiled by the Statistics Section of the Department of Fisheries of a country. These data consist of two main components, i.e., catch and effort data on populations of commercially important fishes. These data also provide some indications on the mechanism of stock fluctuations.

The present textbook has been prepared to give the SEAFDEC trainees a basic knowledge of fish population and show a brief guideline on haw to evaluted "the current situation of fisheries" and how to treat catch and effort data. It is vased on revisions and summaries of several working papers presented by the author at technical workshops and seminars held at SEAFDEC, Bangkok, in 1979-81. Most of the references cited in this book are from Japanese technical papers mainly related to selected pelagic fish species around Japanese coastal waters.
URI
http://hdl.handle.net/20.500.12067/521
Suggested Citation
Hayase, S. (1982). Catch and Effort Data. Training Department, Southeast Asian Fisheries Development Center.
Subject
Catch Data; Effort data; Pelagic fish; Japanese coastal waters; fish population; fish stock; Landing data; Stock assessment; fishing effort
Collections
  • SEAFDEC/TD [28]

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