SISP 10 - Manual for the International Bottom Trawl Surveys. Revision 11.
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Date
2020Corporate Author
International Council for the Exploration of the Sea (ICES)
International Bottom Trawl Survey Working Group
Status
PublishedPages
102pp.Metadata
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Series of ICES Survey Protocols SISP - IBTS X | 1
1 Introduction
Overview of the survey
The International Bottom Trawl Survey (IBTS) in the North Sea has been conducted in
the 1st quarter of the year since the beginning of the 1960s. The survey was first aimed
at juvenile herring in the central and southern North Sea, but then the objectives of the
survey were broadened to also provide recruitment indices for gadoids. The survey
area was extended towards the northern North Sea and the Skagerrak/Kattegat in the
1980s. From 1991 to 1996, surveys were also conducted in the 2nd, 3rd, and 4th
quarters, but since 1997, only the 1st and 3rd quarter surveys continued. The current
extent of the surveys can be seen in Figures A1.1 and A1.2 in Annex 1. The GOV trawl
(chalut à Grande Ouverture Verticale) was introduced as the standard gear and the
gear rigging and fishing method were standardized. However, some countries
continued to use gears other than the GOV in the 3rd quarter IBT.....
Resource URL
https://doi.org/10.17895/ices.pub.c.6315609Publisher
International Council for the Exploration of the Sea (ICES)Copenhagen, Denmark
Series;Nr
Series of ICES Survey Protocols;SISP 10-IBTS 10 Revision 11Document Language
enSustainable Development Goals (SDG)
14.aEssential Ocean Variables (EOV)
Fish abundance and distributionMaturity Level
MatureSpatial Coverage
North SeaNortheast Atlantic
Skagerrak
Kattegat
DOI Original
http://doi.org/10.17895/ices.pub/7583Citation
International Council for the Exploration of the Sea (2020) SISP 10 - Manual for the International Bottom Trawl Surveys, Revision 11. Copenhagen, Denmark, ICES, International Bottom Trawl Survey Working Group, 102pp. (Series of ICES Survey Protocols SISP 10 ‐ IBTS 10 Revision 11). DOI: http://doi.org/10.17895/ices.pub/7583The following license files are associated with this item: