Influence of fleet renewal and trawl development on landings per unit effort of the Danish northern shrimp (Pandalus borealis) fishery
<qd> Eigaard, O. R., and Munch-Petersen, S. 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, doi:10.1093/icesjms/fsq141. </qd>Recent stock assessments of the Pandalu...
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fthighwire:oai:open-archive.highwire.org:icesjms:fsq141v1 2023-05-15T17:43:55+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 2010-09-07 01:43:10.0 text/html http://icesjms.oxfordjournals.org/cgi/content/short/fsq141v1 https://doi.org/10.1093/icesjms/fsq141 en eng Oxford University Press http://icesjms.oxfordjournals.org/cgi/content/short/fsq141v1 http://dx.doi.org/10.1093/icesjms/fsq141 Copyright (C) 2010, International Council for the Exploration of the Sea/Conseil International pour l'Exploration de la Mer Article TEXT 2010 fthighwire https://doi.org/10.1093/icesjms/fsq141 2013-05-26T22:46:52Z <qd> Eigaard, O. R., and Munch-Petersen, S. 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, doi:10.1093/icesjms/fsq141. </qd>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. Text northern shrimp Pandalus borealis HighWire Press (Stanford University) Petersen ENVELOPE(-101.250,-101.250,-71.917,-71.917) ICES Journal of Marine Science 68 1 26 31 |
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HighWire Press (Stanford University) |
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English |
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Article 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 |
Article |
description |
<qd> Eigaard, O. R., and Munch-Petersen, S. 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, doi:10.1093/icesjms/fsq141. </qd>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 |
Text |
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 |
publishDate |
2010 |
url |
http://icesjms.oxfordjournals.org/cgi/content/short/fsq141v1 https://doi.org/10.1093/icesjms/fsq141 |
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_relation |
http://icesjms.oxfordjournals.org/cgi/content/short/fsq141v1 http://dx.doi.org/10.1093/icesjms/fsq141 |
op_rights |
Copyright (C) 2010, International Council for the Exploration of the Sea/Conseil International pour l'Exploration de la Mer |
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_ |
1766146094421508096 |