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Report of the Study Group on Survey Trawl Gear for the IBTS Western and Southern Areas (SGSTG)

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posted on 2004-01-01, 00:00 authored by ICESICES
a) review the modifications and field trials of candidate trawl gears proposed at the 2003 meeting;b) propose the candidate net and ground gear configurations to be used in the different surveys in the area, according to the results of (a);c) determine standardized trawling procedures after appropriate trawl gear has been chosen, in relation to the procedures used in the North Sea;d) define the required scope of continuing inter-calibration work required to maintain continuity in time-series, including the North Sea time-series;e) recommend appropriate survey design for multi-vessel/gear permutations such as stratification, overlap, and the combining of data to provide indices of abundance and biodiversity and any other appropriate indicators of stock and regional scales;f) review gear design proposals from commercial net manufacturers.


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