Relevance of using the equipment for control of fishing gear to reduce inaccuracy in evaluation of marine organisms abundance

Geometric parameters of the bottom trawl DT 27.1/24.4 were tested aboard RV TINRO in the Bering Sea using the acoustic equipment «Scanmar» (Norway). Possible errors in the estimates of marine organisms abundance by bottom trawl survey are calculated for different species by comparing the actual data...

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Bibliographic Details
Published in:Izvestiya TINRO
Main Authors: Egor A. Zakharov, Pavel O. Emelin
Format: Article in Journal/Newspaper
Language:Russian
Published: Transactions of the Pacific Research Institute of Fisheries and Oceanography 2016
Subjects:
геометрия донной траловой системы
горизонтальное раскрытие трала
длина ваеров
зона облова донного трала
механика донной траловой системы
оценка численности гидробионтов
системы контроля орудий лова
Aquaculture. Fisheries. Angling
SH1-691
Bering Sea
Norway
Online Access:https://doi.org/10.26428/1606-9919-2016-186-198-206
https://doaj.org/article/b61a7ef9b92247ad9c4fc7db21a2abf3
Description
Summary:Geometric parameters of the bottom trawl DT 27.1/24.4 were tested aboard RV TINRO in the Bering Sea using the acoustic equipment «Scanmar» (Norway). Possible errors in the estimates of marine organisms abundance by bottom trawl survey are calculated for different species by comparing the actual data on the trawl geometry with the fixed constant value of its horizontal opening. The obtained data can be used for evaluation of the hauled area in bottom trawl surveys.

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