Spatio-temporal variations in gillnet catch rates in the vicinity of North Sea oil platforms
Use of decommissioned North Sea oil platforms as artificial reefs may provide an alternative to their being removed. Three fishing experiments with gillnet fleets lasting 3–5 days and using different mesh sizes were conducted in the vicinity of two platforms to study their potential as sites for com...
Published in: | ICES Journal of Marine Science |
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2002
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fthighwire:oai:open-archive.highwire.org:icesjms:59/suppl/S294 2023-05-15T16:19:16+02:00 Spatio-temporal variations in gillnet catch rates in the vicinity of North Sea oil platforms Løkkeborg, Svein Humborstad, Odd-Børre Jørgensen, Terje Soldal, Aud Vold 2002-01-01 00:00:00.0 text/html http://icesjms.oxfordjournals.org/cgi/content/short/59/suppl/S294 https://doi.org/10.1006/jmsc.2002.1218 en eng Oxford University Press http://icesjms.oxfordjournals.org/cgi/content/short/59/suppl/S294 http://dx.doi.org/10.1006/jmsc.2002.1218 Copyright (C) 2002, International Council for the Exploration of the Sea/Conseil International pour l'Exploration de la Mer Regular Articles TEXT 2002 fthighwire https://doi.org/10.1006/jmsc.2002.1218 2015-03-01T01:01:42Z Use of decommissioned North Sea oil platforms as artificial reefs may provide an alternative to their being removed. Three fishing experiments with gillnet fleets lasting 3–5 days and using different mesh sizes were conducted in the vicinity of two platforms to study their potential as sites for commercial fishing. In each case, five fleets were set in a star-shaped pattern centred around the platform and running up to a distance 1400 m. Catches consisted mainly of cod ( Gadus morhua ) and saithe ( Pollachius virens ), and in one case also of ling ( Molva molva ). In two experiments, catch rates of nets set within a distance of 110–165 m of the platform were three to four times higher than those of nets set at greater distances. In the third experiment, the highest catches were taken 150–300 m from the platform, also by a factor of four compared to catches taken at greater distances. However, patterns differed among species, areas, and seasons. Catch rates varied considerably between fishing days, and in only one experiment did catch rates (specifically of ling) decline consistently throughout the fishing period, suggesting gradual depletion. Although the study provided evidence of pronounced aggregations of fish close to the platforms, responses are complex and results are inconclusive regarding species-specific temporal and spatial patterns. Copyright 2002 International Council for the Exploration of the Sea. Published by Elsevier Science Ltd. All rights reserved . Text Gadus morhua HighWire Press (Stanford University) ICES Journal of Marine Science 59 S294 S299 |
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HighWire Press (Stanford University) |
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English |
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Regular Articles |
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Regular Articles Løkkeborg, Svein Humborstad, Odd-Børre Jørgensen, Terje Soldal, Aud Vold Spatio-temporal variations in gillnet catch rates in the vicinity of North Sea oil platforms |
topic_facet |
Regular Articles |
description |
Use of decommissioned North Sea oil platforms as artificial reefs may provide an alternative to their being removed. Three fishing experiments with gillnet fleets lasting 3–5 days and using different mesh sizes were conducted in the vicinity of two platforms to study their potential as sites for commercial fishing. In each case, five fleets were set in a star-shaped pattern centred around the platform and running up to a distance 1400 m. Catches consisted mainly of cod ( Gadus morhua ) and saithe ( Pollachius virens ), and in one case also of ling ( Molva molva ). In two experiments, catch rates of nets set within a distance of 110–165 m of the platform were three to four times higher than those of nets set at greater distances. In the third experiment, the highest catches were taken 150–300 m from the platform, also by a factor of four compared to catches taken at greater distances. However, patterns differed among species, areas, and seasons. Catch rates varied considerably between fishing days, and in only one experiment did catch rates (specifically of ling) decline consistently throughout the fishing period, suggesting gradual depletion. Although the study provided evidence of pronounced aggregations of fish close to the platforms, responses are complex and results are inconclusive regarding species-specific temporal and spatial patterns. Copyright 2002 International Council for the Exploration of the Sea. Published by Elsevier Science Ltd. All rights reserved . |
format |
Text |
author |
Løkkeborg, Svein Humborstad, Odd-Børre Jørgensen, Terje Soldal, Aud Vold |
author_facet |
Løkkeborg, Svein Humborstad, Odd-Børre Jørgensen, Terje Soldal, Aud Vold |
author_sort |
Løkkeborg, Svein |
title |
Spatio-temporal variations in gillnet catch rates in the vicinity of North Sea oil platforms |
title_short |
Spatio-temporal variations in gillnet catch rates in the vicinity of North Sea oil platforms |
title_full |
Spatio-temporal variations in gillnet catch rates in the vicinity of North Sea oil platforms |
title_fullStr |
Spatio-temporal variations in gillnet catch rates in the vicinity of North Sea oil platforms |
title_full_unstemmed |
Spatio-temporal variations in gillnet catch rates in the vicinity of North Sea oil platforms |
title_sort |
spatio-temporal variations in gillnet catch rates in the vicinity of north sea oil platforms |
publisher |
Oxford University Press |
publishDate |
2002 |
url |
http://icesjms.oxfordjournals.org/cgi/content/short/59/suppl/S294 https://doi.org/10.1006/jmsc.2002.1218 |
genre |
Gadus morhua |
genre_facet |
Gadus morhua |
op_relation |
http://icesjms.oxfordjournals.org/cgi/content/short/59/suppl/S294 http://dx.doi.org/10.1006/jmsc.2002.1218 |
op_rights |
Copyright (C) 2002, International Council for the Exploration of the Sea/Conseil International pour l'Exploration de la Mer |
op_doi |
https://doi.org/10.1006/jmsc.2002.1218 |
container_title |
ICES Journal of Marine Science |
container_volume |
59 |
container_start_page |
S294 |
op_container_end_page |
S299 |
_version_ |
1766005641345761280 |