Influence of fleet renewal and trawl development on landings per unit effort of the Danish northern shrimp (Pandalus borealis) fishery
Abstract Eigaard, O. R., and Munch-Petersen, S. 2011. Influence of fleet renewal and trawl development on landings per unit effort of the Danish northern shrimp (Pandalus borealis) fishery. – ICES Journal of Marine Science, 68: 26–31. Recent stock assessments of the Pandalus stock in the Skagerrak (...
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Online Access: | http://dx.doi.org/10.1093/icesjms/fsq141 http://academic.oup.com/icesjms/article-pdf/68/1/26/29138986/fsq141.pdf |
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croxfordunivpr:10.1093/icesjms/fsq141 2023-06-06T11:57:52+02:00 Influence of fleet renewal and trawl development on landings per unit effort of the Danish northern shrimp (Pandalus borealis) fishery Eigaard, Ole Ritzau Munch-Petersen, Sten 2010 http://dx.doi.org/10.1093/icesjms/fsq141 http://academic.oup.com/icesjms/article-pdf/68/1/26/29138986/fsq141.pdf en eng Oxford University Press (OUP) ICES Journal of Marine Science volume 68, issue 1, page 26-31 ISSN 1095-9289 1054-3139 Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography journal-article 2010 croxfordunivpr https://doi.org/10.1093/icesjms/fsq141 2023-04-14T11:12:10Z Abstract Eigaard, O. R., and Munch-Petersen, S. 2011. Influence of fleet renewal and trawl development on landings per unit effort of the Danish northern shrimp (Pandalus borealis) fishery. – ICES Journal of Marine Science, 68: 26–31. Recent stock assessments of the Pandalus stock in the Skagerrak (ICES Division IIIa) and the Norwegian Deep (Division IVa east) have relied largely on a time-series of landings per unit effort (lpue) calculated from Danish logbook data. Because of fleet renewal and trawl-size changes, the relationship between nominal effort data as recorded in logbooks (days fishing) and effective effort is likely to have changed, so to standardize the nominal lpue time-series, trawl-size development has been taken into account using generalized linear modelling. As logbooks do not provide trawl-size information, this standardization was made possible by retrieving technical trawl and vessel data from industry order books. These data demonstrated an approximately linear relationship between vessel engine power and Pandalus trawl size, so validated the use of vessel horsepower from the logbooks as a proxy for an unknown trawl size. Standardized lpue time-series for the past 20 years indicated a lesser increase in stock size than nominal lpue, the modelling results demonstrating that vessel lpue increased by 9.5% with each 100 hp of engine power. Article in Journal/Newspaper northern shrimp Pandalus borealis Oxford University Press (via Crossref) Petersen ENVELOPE(-101.250,-101.250,-71.917,-71.917) ICES Journal of Marine Science 68 1 26 31 |
institution |
Open Polar |
collection |
Oxford University Press (via Crossref) |
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 Eigaard, Ole Ritzau Munch-Petersen, Sten Influence of fleet renewal and trawl development on landings per unit effort of the Danish northern shrimp (Pandalus borealis) fishery |
topic_facet |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography |
description |
Abstract Eigaard, O. R., and Munch-Petersen, S. 2011. Influence of fleet renewal and trawl development on landings per unit effort of the Danish northern shrimp (Pandalus borealis) fishery. – ICES Journal of Marine Science, 68: 26–31. Recent stock assessments of the Pandalus stock in the Skagerrak (ICES Division IIIa) and the Norwegian Deep (Division IVa east) have relied largely on a time-series of landings per unit effort (lpue) calculated from Danish logbook data. Because of fleet renewal and trawl-size changes, the relationship between nominal effort data as recorded in logbooks (days fishing) and effective effort is likely to have changed, so to standardize the nominal lpue time-series, trawl-size development has been taken into account using generalized linear modelling. As logbooks do not provide trawl-size information, this standardization was made possible by retrieving technical trawl and vessel data from industry order books. These data demonstrated an approximately linear relationship between vessel engine power and Pandalus trawl size, so validated the use of vessel horsepower from the logbooks as a proxy for an unknown trawl size. Standardized lpue time-series for the past 20 years indicated a lesser increase in stock size than nominal lpue, the modelling results demonstrating that vessel lpue increased by 9.5% with each 100 hp of engine power. |
format |
Article in Journal/Newspaper |
author |
Eigaard, Ole Ritzau Munch-Petersen, Sten |
author_facet |
Eigaard, Ole Ritzau Munch-Petersen, Sten |
author_sort |
Eigaard, Ole Ritzau |
title |
Influence of fleet renewal and trawl development on landings per unit effort of the Danish northern shrimp (Pandalus borealis) fishery |
title_short |
Influence of fleet renewal and trawl development on landings per unit effort of the Danish northern shrimp (Pandalus borealis) fishery |
title_full |
Influence of fleet renewal and trawl development on landings per unit effort of the Danish northern shrimp (Pandalus borealis) fishery |
title_fullStr |
Influence of fleet renewal and trawl development on landings per unit effort of the Danish northern shrimp (Pandalus borealis) fishery |
title_full_unstemmed |
Influence of fleet renewal and trawl development on landings per unit effort of the Danish northern shrimp (Pandalus borealis) fishery |
title_sort |
influence of fleet renewal and trawl development on landings per unit effort of the danish northern shrimp (pandalus borealis) fishery |
publisher |
Oxford University Press (OUP) |
publishDate |
2010 |
url |
http://dx.doi.org/10.1093/icesjms/fsq141 http://academic.oup.com/icesjms/article-pdf/68/1/26/29138986/fsq141.pdf |
long_lat |
ENVELOPE(-101.250,-101.250,-71.917,-71.917) |
geographic |
Petersen |
geographic_facet |
Petersen |
genre |
northern shrimp Pandalus borealis |
genre_facet |
northern shrimp Pandalus borealis |
op_source |
ICES Journal of Marine Science volume 68, issue 1, page 26-31 ISSN 1095-9289 1054-3139 |
op_doi |
https://doi.org/10.1093/icesjms/fsq141 |
container_title |
ICES Journal of Marine Science |
container_volume |
68 |
container_issue |
1 |
container_start_page |
26 |
op_container_end_page |
31 |
_version_ |
1767966276160847872 |