Sounds from seismic air guns: gear- and species-specific effects on catch rates and fish distribution
Previous studies found that sounds generated by seismic air guns led to pronounced reductions in commercial catches from trawls and longlines and the displacement of fish from fishing grounds. In contradiction to these findings and fishermen’s concerns, we demonstrate here that gillnet catches were...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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Canadian Science Publishing
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Online Access: | http://dx.doi.org/10.1139/f2012-059 http://www.nrcresearchpress.com/doi/full-xml/10.1139/f2012-059 http://www.nrcresearchpress.com/doi/pdf/10.1139/f2012-059 |
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crcansciencepubl:10.1139/f2012-059 2023-12-17T10:30:54+01:00 Sounds from seismic air guns: gear- and species-specific effects on catch rates and fish distribution Løkkeborg, Svein Ona, Egil Vold, Aud Salthaug, Are Jech, Josef Michael 2012 http://dx.doi.org/10.1139/f2012-059 http://www.nrcresearchpress.com/doi/full-xml/10.1139/f2012-059 http://www.nrcresearchpress.com/doi/pdf/10.1139/f2012-059 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Fisheries and Aquatic Sciences volume 69, issue 8, page 1278-1291 ISSN 0706-652X 1205-7533 Aquatic Science Ecology, Evolution, Behavior and Systematics journal-article 2012 crcansciencepubl https://doi.org/10.1139/f2012-059 2023-11-19T13:38:07Z Previous studies found that sounds generated by seismic air guns led to pronounced reductions in commercial catches from trawls and longlines and the displacement of fish from fishing grounds. In contradiction to these findings and fishermen’s concerns, we demonstrate here that gillnet catches were doubled for redfish ( Sebastes norvegicus ) and Greenland halibut ( Reinhardtius hippoglossoides ) during seismic shooting on a Norwegian fishing ground (86% and 132% increase, respectively, compared to preshooting levels). However, longline catch rates fell (16% for Greenland halibut, 25% for haddock ( Melanogrammus aeglefinus )). These contradictory results were explained by greater swimming activity versus lowered food search behaviour in fish exposed to air-gun sound emissions. Changes in catch rates of all species studied (including saithe (i.e., pollock, Pollachius virens ) and ling ( Molva molva )) were found, indicating that these species all responded to air-gun sounds. Except for saithe, acoustic mapping of fish abundance did not suggest displacement from fishing grounds. Less intense sound exposure compared with previous studies and strong habitat preference in some species may explain this finding. Article in Journal/Newspaper Greenland Sebastes norvegicus Canadian Science Publishing (via Crossref) Greenland Fishing Ground ENVELOPE(-55.848,-55.848,49.550,49.550) Canadian Journal of Fisheries and Aquatic Sciences 69 8 1278 1291 |
institution |
Open Polar |
collection |
Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Aquatic Science Ecology, Evolution, Behavior and Systematics Løkkeborg, Svein Ona, Egil Vold, Aud Salthaug, Are Sounds from seismic air guns: gear- and species-specific effects on catch rates and fish distribution |
topic_facet |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
description |
Previous studies found that sounds generated by seismic air guns led to pronounced reductions in commercial catches from trawls and longlines and the displacement of fish from fishing grounds. In contradiction to these findings and fishermen’s concerns, we demonstrate here that gillnet catches were doubled for redfish ( Sebastes norvegicus ) and Greenland halibut ( Reinhardtius hippoglossoides ) during seismic shooting on a Norwegian fishing ground (86% and 132% increase, respectively, compared to preshooting levels). However, longline catch rates fell (16% for Greenland halibut, 25% for haddock ( Melanogrammus aeglefinus )). These contradictory results were explained by greater swimming activity versus lowered food search behaviour in fish exposed to air-gun sound emissions. Changes in catch rates of all species studied (including saithe (i.e., pollock, Pollachius virens ) and ling ( Molva molva )) were found, indicating that these species all responded to air-gun sounds. Except for saithe, acoustic mapping of fish abundance did not suggest displacement from fishing grounds. Less intense sound exposure compared with previous studies and strong habitat preference in some species may explain this finding. |
author2 |
Jech, Josef Michael |
format |
Article in Journal/Newspaper |
author |
Løkkeborg, Svein Ona, Egil Vold, Aud Salthaug, Are |
author_facet |
Løkkeborg, Svein Ona, Egil Vold, Aud Salthaug, Are |
author_sort |
Løkkeborg, Svein |
title |
Sounds from seismic air guns: gear- and species-specific effects on catch rates and fish distribution |
title_short |
Sounds from seismic air guns: gear- and species-specific effects on catch rates and fish distribution |
title_full |
Sounds from seismic air guns: gear- and species-specific effects on catch rates and fish distribution |
title_fullStr |
Sounds from seismic air guns: gear- and species-specific effects on catch rates and fish distribution |
title_full_unstemmed |
Sounds from seismic air guns: gear- and species-specific effects on catch rates and fish distribution |
title_sort |
sounds from seismic air guns: gear- and species-specific effects on catch rates and fish distribution |
publisher |
Canadian Science Publishing |
publishDate |
2012 |
url |
http://dx.doi.org/10.1139/f2012-059 http://www.nrcresearchpress.com/doi/full-xml/10.1139/f2012-059 http://www.nrcresearchpress.com/doi/pdf/10.1139/f2012-059 |
long_lat |
ENVELOPE(-55.848,-55.848,49.550,49.550) |
geographic |
Greenland Fishing Ground |
geographic_facet |
Greenland Fishing Ground |
genre |
Greenland Sebastes norvegicus |
genre_facet |
Greenland Sebastes norvegicus |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences volume 69, issue 8, page 1278-1291 ISSN 0706-652X 1205-7533 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/f2012-059 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
69 |
container_issue |
8 |
container_start_page |
1278 |
op_container_end_page |
1291 |
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1785584000837877760 |