Catchability of pelagic trawls for sampling deep-living nekton in the mid-North Atlantic
Material collected in summer 2004 from the Mid-Atlantic Ridge between Iceland and the Azores with three pelagic trawls was used to estimate relative catchabilities of common fish, cephalopod, decapod, and jellyfish species. Catchability is defined as the ratio of numbers caught between two trawls, s...
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Format: | Article in Journal/Newspaper |
Language: | English |
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Oxford University Press
2010
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Online Access: | http://hdl.handle.net/11250/117021 https://doi.org/10.1093/icesjms/fsq089 |
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ftimr:oai:imr.brage.unit.no:11250/117021 2023-05-15T16:50:54+02:00 Catchability of pelagic trawls for sampling deep-living nekton in the mid-North Atlantic Heino, Mikko Porteiro, Filipe M. Sutton, Tracey T. Falkenhaug, Tone Godø, Olav Rune Piatkowski, Uwe 2010-06-29 application/pdf http://hdl.handle.net/11250/117021 https://doi.org/10.1093/icesjms/fsq089 eng eng Oxford University Press urn:issn:1054-3139 http://hdl.handle.net/11250/117021 http://dx.doi.org/10.1093/icesjms/fsq089 377-389 68 ICES Journal of Marine Science 2 catchability fangstpotensiale fishing gear fiskeredskaper ecosystems økosystemer VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Fisheries technology: 924 Journal article Peer reviewed 2010 ftimr https://doi.org/10.1093/icesjms/fsq089 2021-09-23T20:15:59Z Material collected in summer 2004 from the Mid-Atlantic Ridge between Iceland and the Azores with three pelagic trawls was used to estimate relative catchabilities of common fish, cephalopod, decapod, and jellyfish species. Catchability is defined as the ratio of numbers caught between two trawls, standardized for towed distance. Taxon-specific catchability coefficients were estimated for two large pelagic trawls with graded meshes, using a smaller pelagic trawl with a uniform mesh size as the reference trawl. Two of the trawls were equipped with multiple opening–closing codends that allowed sampling of different depth layers. Generalized linear and mixed models suggest that most of the taxa have catchabilities much lower than expected from the area of opening alone, indicating that only a few species are herded by the large mesh at the mouth of larger trawls. Catchability coefficients across taxa show a very large spread, indicating that the sampled volume for the larger trawls with graded meshes was highly taxon-specific. Part of this variability can be explained by body size and taxonomic group, the latter probably reflecting differences in body form and behaviour. The catchability estimates presented here form the basis for combining data for quantitative analyses of community structure. Article in Journal/Newspaper Iceland North Atlantic Institute for Marine Research: Brage IMR Mid-Atlantic Ridge ICES Journal of Marine Science 68 2 377 389 |
institution |
Open Polar |
collection |
Institute for Marine Research: Brage IMR |
op_collection_id |
ftimr |
language |
English |
topic |
catchability fangstpotensiale fishing gear fiskeredskaper ecosystems økosystemer VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Fisheries technology: 924 |
spellingShingle |
catchability fangstpotensiale fishing gear fiskeredskaper ecosystems økosystemer VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Fisheries technology: 924 Heino, Mikko Porteiro, Filipe M. Sutton, Tracey T. Falkenhaug, Tone Godø, Olav Rune Piatkowski, Uwe Catchability of pelagic trawls for sampling deep-living nekton in the mid-North Atlantic |
topic_facet |
catchability fangstpotensiale fishing gear fiskeredskaper ecosystems økosystemer VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Fisheries technology: 924 |
description |
Material collected in summer 2004 from the Mid-Atlantic Ridge between Iceland and the Azores with three pelagic trawls was used to estimate relative catchabilities of common fish, cephalopod, decapod, and jellyfish species. Catchability is defined as the ratio of numbers caught between two trawls, standardized for towed distance. Taxon-specific catchability coefficients were estimated for two large pelagic trawls with graded meshes, using a smaller pelagic trawl with a uniform mesh size as the reference trawl. Two of the trawls were equipped with multiple opening–closing codends that allowed sampling of different depth layers. Generalized linear and mixed models suggest that most of the taxa have catchabilities much lower than expected from the area of opening alone, indicating that only a few species are herded by the large mesh at the mouth of larger trawls. Catchability coefficients across taxa show a very large spread, indicating that the sampled volume for the larger trawls with graded meshes was highly taxon-specific. Part of this variability can be explained by body size and taxonomic group, the latter probably reflecting differences in body form and behaviour. The catchability estimates presented here form the basis for combining data for quantitative analyses of community structure. |
format |
Article in Journal/Newspaper |
author |
Heino, Mikko Porteiro, Filipe M. Sutton, Tracey T. Falkenhaug, Tone Godø, Olav Rune Piatkowski, Uwe |
author_facet |
Heino, Mikko Porteiro, Filipe M. Sutton, Tracey T. Falkenhaug, Tone Godø, Olav Rune Piatkowski, Uwe |
author_sort |
Heino, Mikko |
title |
Catchability of pelagic trawls for sampling deep-living nekton in the mid-North Atlantic |
title_short |
Catchability of pelagic trawls for sampling deep-living nekton in the mid-North Atlantic |
title_full |
Catchability of pelagic trawls for sampling deep-living nekton in the mid-North Atlantic |
title_fullStr |
Catchability of pelagic trawls for sampling deep-living nekton in the mid-North Atlantic |
title_full_unstemmed |
Catchability of pelagic trawls for sampling deep-living nekton in the mid-North Atlantic |
title_sort |
catchability of pelagic trawls for sampling deep-living nekton in the mid-north atlantic |
publisher |
Oxford University Press |
publishDate |
2010 |
url |
http://hdl.handle.net/11250/117021 https://doi.org/10.1093/icesjms/fsq089 |
geographic |
Mid-Atlantic Ridge |
geographic_facet |
Mid-Atlantic Ridge |
genre |
Iceland North Atlantic |
genre_facet |
Iceland North Atlantic |
op_source |
377-389 68 ICES Journal of Marine Science 2 |
op_relation |
urn:issn:1054-3139 http://hdl.handle.net/11250/117021 http://dx.doi.org/10.1093/icesjms/fsq089 |
op_doi |
https://doi.org/10.1093/icesjms/fsq089 |
container_title |
ICES Journal of Marine Science |
container_volume |
68 |
container_issue |
2 |
container_start_page |
377 |
op_container_end_page |
389 |
_version_ |
1766041019381448704 |