Trawl hangs, baby fish, and closed areas: a win–win scenario
Abstract The frequency and geographic distribution of trawlnet hangs from a fishery-independent survey are evaluated. The hangs data were plotted on a substratum map to confirm that many, but not all, were naturally occurring, high relief substrata. The data were also coupled with the occurrence of...
Published in: | ICES Journal of Marine Science |
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Language: | English |
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Oxford University Press (OUP)
2003
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Online Access: | http://dx.doi.org/10.1016/s1054-3139(03)00131-0 http://academic.oup.com/icesjms/article-pdf/60/5/930/29120072/60-5-930.pdf |
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croxfordunivpr:10.1016/s1054-3139(03)00131-0 2024-03-17T08:57:58+00:00 Trawl hangs, baby fish, and closed areas: a win–win scenario Link, Jason S Demarest, Chad 2003 http://dx.doi.org/10.1016/s1054-3139(03)00131-0 http://academic.oup.com/icesjms/article-pdf/60/5/930/29120072/60-5-930.pdf en eng Oxford University Press (OUP) ICES Journal of Marine Science volume 60, issue 5, page 930-938 ISSN 1095-9289 1054-3139 Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography journal-article 2003 croxfordunivpr https://doi.org/10.1016/s1054-3139(03)00131-0 2024-02-20T00:11:52Z Abstract The frequency and geographic distribution of trawlnet hangs from a fishery-independent survey are evaluated. The hangs data were plotted on a substratum map to confirm that many, but not all, were naturally occurring, high relief substrata. The data were also coupled with the occurrence of juvenile cod (Gadus morhua) and haddock (Melanogrammus aeglefinus) to assess the degree of association between juvenile gadoids and high relief substrata. The average minimal distance from a fish occurrence to a hang ranged from 8.1 to 12.0 km (4.4–6.5 nautical miles), well within the reported daily range of movement for these fish. A similar pattern was detected for the sea raven (Hemitripterus americanus), a predator of juvenile gadoids, confirming the location of these microhabitat foodwebs. On average, closing an area 3.7 km (2 nautical miles) around a hang will enclose 17–30% of the populations of these juvenile fish; a wider buffer (18–28 km; 10–15 nautical miles) will close a linearly increasing portion of the populations. Additionally, closing areas surrounding the hangs, particularly regions of high hang density, will help to minimize losses of or damage to fishing gear. We propose a win–win scenario by establishing or evaluating closed areas in regions with high concentrations of known hangs. This approach is widely applicable for many marine ecosystems and may help to achieve simultaneous conservation and resource management goals, whereby one can both protect pre-recruit fish and enhance the effectiveness of a fishery. Article in Journal/Newspaper Gadus morhua Oxford University Press ICES Journal of Marine Science 60 5 930 938 |
institution |
Open Polar |
collection |
Oxford University Press |
op_collection_id |
croxfordunivpr |
language |
English |
topic |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography |
spellingShingle |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography Link, Jason S Demarest, Chad Trawl hangs, baby fish, and closed areas: a win–win scenario |
topic_facet |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography |
description |
Abstract The frequency and geographic distribution of trawlnet hangs from a fishery-independent survey are evaluated. The hangs data were plotted on a substratum map to confirm that many, but not all, were naturally occurring, high relief substrata. The data were also coupled with the occurrence of juvenile cod (Gadus morhua) and haddock (Melanogrammus aeglefinus) to assess the degree of association between juvenile gadoids and high relief substrata. The average minimal distance from a fish occurrence to a hang ranged from 8.1 to 12.0 km (4.4–6.5 nautical miles), well within the reported daily range of movement for these fish. A similar pattern was detected for the sea raven (Hemitripterus americanus), a predator of juvenile gadoids, confirming the location of these microhabitat foodwebs. On average, closing an area 3.7 km (2 nautical miles) around a hang will enclose 17–30% of the populations of these juvenile fish; a wider buffer (18–28 km; 10–15 nautical miles) will close a linearly increasing portion of the populations. Additionally, closing areas surrounding the hangs, particularly regions of high hang density, will help to minimize losses of or damage to fishing gear. We propose a win–win scenario by establishing or evaluating closed areas in regions with high concentrations of known hangs. This approach is widely applicable for many marine ecosystems and may help to achieve simultaneous conservation and resource management goals, whereby one can both protect pre-recruit fish and enhance the effectiveness of a fishery. |
format |
Article in Journal/Newspaper |
author |
Link, Jason S Demarest, Chad |
author_facet |
Link, Jason S Demarest, Chad |
author_sort |
Link, Jason S |
title |
Trawl hangs, baby fish, and closed areas: a win–win scenario |
title_short |
Trawl hangs, baby fish, and closed areas: a win–win scenario |
title_full |
Trawl hangs, baby fish, and closed areas: a win–win scenario |
title_fullStr |
Trawl hangs, baby fish, and closed areas: a win–win scenario |
title_full_unstemmed |
Trawl hangs, baby fish, and closed areas: a win–win scenario |
title_sort |
trawl hangs, baby fish, and closed areas: a win–win scenario |
publisher |
Oxford University Press (OUP) |
publishDate |
2003 |
url |
http://dx.doi.org/10.1016/s1054-3139(03)00131-0 http://academic.oup.com/icesjms/article-pdf/60/5/930/29120072/60-5-930.pdf |
genre |
Gadus morhua |
genre_facet |
Gadus morhua |
op_source |
ICES Journal of Marine Science volume 60, issue 5, page 930-938 ISSN 1095-9289 1054-3139 |
op_doi |
https://doi.org/10.1016/s1054-3139(03)00131-0 |
container_title |
ICES Journal of Marine Science |
container_volume |
60 |
container_issue |
5 |
container_start_page |
930 |
op_container_end_page |
938 |
_version_ |
1793767378108022784 |