NORTHEAST ARCTIC COD POPULATION PERSISTENCE IN THE LOFOTEN–BARENTS SEA SYSTEM UNDER FISHING
Population growth, and hence the population's persistence, is affected by several factors such as climate, species interaction, and harvesting pressure. Proper resource management requires an understanding of these factors. We apply techniques based upon age-structured population matrices to an...
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ftdatacite:10.6084/m9.figshare.c.3293951.v1 2023-05-15T14:30:23+02:00 NORTHEAST ARCTIC COD POPULATION PERSISTENCE IN THE LOFOTEN–BARENTS SEA SYSTEM UNDER FISHING Durant, Joël M. Hjermann, Dag Ø. Sabarros, Philippe S. Stenseth, Nils Chr. 2016 https://dx.doi.org/10.6084/m9.figshare.c.3293951.v1 https://figshare.com/collections/NORTHEAST_ARCTIC_COD_POPULATION_PERSISTENCE_IN_THE_LOFOTEN_BARENTS_SEA_SYSTEM_UNDER_FISHING/3293951/1 unknown Figshare https://dx.doi.org/10.1890/07-0960.1 https://dx.doi.org/10.6084/m9.figshare.c.3293951 CC-BY http://creativecommons.org/licenses/by/3.0/us CC-BY Environmental Science Ecology FOS Biological sciences Collection article 2016 ftdatacite https://doi.org/10.6084/m9.figshare.c.3293951.v1 https://doi.org/10.1890/07-0960.1 https://doi.org/10.6084/m9.figshare.c.3293951 2021-11-05T12:55:41Z Population growth, and hence the population's persistence, is affected by several factors such as climate, species interaction, and harvesting pressure. Proper resource management requires an understanding of these factors. We apply techniques based upon age-structured population matrices to analyze estimated stock sizes derived from annual bottom trawl sampling in the winter feeding area of northeast Arctic cod (Gadus morhua L.) from 1981 to 2003. We run generalized additive models to explain population growth rate by different explanatory variables. Cod population growth was found to be positively related to the abundance of capelin (Mallotus villosus Müller), negatively related to the number of cannibalistic cod with a two-year lag, and marginally positively related to the winter North Atlantic Oscillation index (NAO). This model remains true independently from the population status (i.e., fished or non-fished). Capelin abundance is the main variable that to some degree can be adjusted in order to maintain the population size at a given level of cod harvesting. Our results point to the importance of managing conjointly cod and capelin stocks. Article in Journal/Newspaper Arctic cod Arctic Barents Sea Gadus morhua Lofoten North Atlantic North Atlantic oscillation Northeast Arctic cod DataCite Metadata Store (German National Library of Science and Technology) Arctic Barents Sea Lofoten |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
unknown |
topic |
Environmental Science Ecology FOS Biological sciences |
spellingShingle |
Environmental Science Ecology FOS Biological sciences Durant, Joël M. Hjermann, Dag Ø. Sabarros, Philippe S. Stenseth, Nils Chr. NORTHEAST ARCTIC COD POPULATION PERSISTENCE IN THE LOFOTEN–BARENTS SEA SYSTEM UNDER FISHING |
topic_facet |
Environmental Science Ecology FOS Biological sciences |
description |
Population growth, and hence the population's persistence, is affected by several factors such as climate, species interaction, and harvesting pressure. Proper resource management requires an understanding of these factors. We apply techniques based upon age-structured population matrices to analyze estimated stock sizes derived from annual bottom trawl sampling in the winter feeding area of northeast Arctic cod (Gadus morhua L.) from 1981 to 2003. We run generalized additive models to explain population growth rate by different explanatory variables. Cod population growth was found to be positively related to the abundance of capelin (Mallotus villosus Müller), negatively related to the number of cannibalistic cod with a two-year lag, and marginally positively related to the winter North Atlantic Oscillation index (NAO). This model remains true independently from the population status (i.e., fished or non-fished). Capelin abundance is the main variable that to some degree can be adjusted in order to maintain the population size at a given level of cod harvesting. Our results point to the importance of managing conjointly cod and capelin stocks. |
format |
Article in Journal/Newspaper |
author |
Durant, Joël M. Hjermann, Dag Ø. Sabarros, Philippe S. Stenseth, Nils Chr. |
author_facet |
Durant, Joël M. Hjermann, Dag Ø. Sabarros, Philippe S. Stenseth, Nils Chr. |
author_sort |
Durant, Joël M. |
title |
NORTHEAST ARCTIC COD POPULATION PERSISTENCE IN THE LOFOTEN–BARENTS SEA SYSTEM UNDER FISHING |
title_short |
NORTHEAST ARCTIC COD POPULATION PERSISTENCE IN THE LOFOTEN–BARENTS SEA SYSTEM UNDER FISHING |
title_full |
NORTHEAST ARCTIC COD POPULATION PERSISTENCE IN THE LOFOTEN–BARENTS SEA SYSTEM UNDER FISHING |
title_fullStr |
NORTHEAST ARCTIC COD POPULATION PERSISTENCE IN THE LOFOTEN–BARENTS SEA SYSTEM UNDER FISHING |
title_full_unstemmed |
NORTHEAST ARCTIC COD POPULATION PERSISTENCE IN THE LOFOTEN–BARENTS SEA SYSTEM UNDER FISHING |
title_sort |
northeast arctic cod population persistence in the lofoten–barents sea system under fishing |
publisher |
Figshare |
publishDate |
2016 |
url |
https://dx.doi.org/10.6084/m9.figshare.c.3293951.v1 https://figshare.com/collections/NORTHEAST_ARCTIC_COD_POPULATION_PERSISTENCE_IN_THE_LOFOTEN_BARENTS_SEA_SYSTEM_UNDER_FISHING/3293951/1 |
geographic |
Arctic Barents Sea Lofoten |
geographic_facet |
Arctic Barents Sea Lofoten |
genre |
Arctic cod Arctic Barents Sea Gadus morhua Lofoten North Atlantic North Atlantic oscillation Northeast Arctic cod |
genre_facet |
Arctic cod Arctic Barents Sea Gadus morhua Lofoten North Atlantic North Atlantic oscillation Northeast Arctic cod |
op_relation |
https://dx.doi.org/10.1890/07-0960.1 https://dx.doi.org/10.6084/m9.figshare.c.3293951 |
op_rights |
CC-BY http://creativecommons.org/licenses/by/3.0/us |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.6084/m9.figshare.c.3293951.v1 https://doi.org/10.1890/07-0960.1 https://doi.org/10.6084/m9.figshare.c.3293951 |
_version_ |
1766304233700720640 |