Modelling dispersal of eggs and quantifying connectivity among Norwegian coastal cod subpopulations
The Norwegian coast is populated by two cod populations: Northeast Arctic cod and Norwegian Coastal cod. In this paper, we use a further division based on life history: oceanic cod, coastal cod, and fjord cod. A numerical ocean model was implemented for the northern Norwegian coast where all these p...
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fthighwire:oai:open-archive.highwire.org:icesjms:71/4/957 2023-05-15T14:30:27+02:00 Modelling dispersal of eggs and quantifying connectivity among Norwegian coastal cod subpopulations Myksvoll, Mari S. Jung, Kyung-Mi Albretsen, Jon Sundby, Svein 2014-06-01 00:00:00.0 text/html http://icesjms.oxfordjournals.org/cgi/content/short/71/4/957 https://doi.org/10.1093/icesjms/fst022 en eng Oxford University Press http://icesjms.oxfordjournals.org/cgi/content/short/71/4/957 http://dx.doi.org/10.1093/icesjms/fst022 Copyright (C) 2014, International Council for the Exploration of the Sea/Conseil International pour l'Exploration de la Mer Original Articles TEXT 2014 fthighwire https://doi.org/10.1093/icesjms/fst022 2015-02-28T22:23:13Z The Norwegian coast is populated by two cod populations: Northeast Arctic cod and Norwegian Coastal cod. In this paper, we use a further division based on life history: oceanic cod, coastal cod, and fjord cod. A numerical ocean model was implemented for the northern Norwegian coast where all these populations have spawning areas. The model results were used to simulate connectivity and retention of cod eggs from the different subpopulations. The model reproduced the observed variability and mesoscale activity in the Norwegian Coastal Current. Eggs released at an oceanic spawning area were transported northwards along the coastline. Coastal cod eggs had intermediate connectivity with each other and fjord cod eggs had high local retention. Although the high retention of eggs in fjord areas is mainly caused by a subsurface distribution of eggs, the intermediate retention of eggs from coastal spawning areas is caused by small-scale eddies in-between many small islands. The high-resolution ocean model made it possible to reveal these specific dispersal patterns. The high retention of early life stages in fjords combined with strong homing to spawning areas indicates that fjord subpopulations may be described as a metapopulation. Text Arctic cod Arctic Northeast Arctic cod HighWire Press (Stanford University) Arctic ICES Journal of Marine Science 71 4 957 969 |
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HighWire Press (Stanford University) |
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English |
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Original Articles |
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Original Articles Myksvoll, Mari S. Jung, Kyung-Mi Albretsen, Jon Sundby, Svein Modelling dispersal of eggs and quantifying connectivity among Norwegian coastal cod subpopulations |
topic_facet |
Original Articles |
description |
The Norwegian coast is populated by two cod populations: Northeast Arctic cod and Norwegian Coastal cod. In this paper, we use a further division based on life history: oceanic cod, coastal cod, and fjord cod. A numerical ocean model was implemented for the northern Norwegian coast where all these populations have spawning areas. The model results were used to simulate connectivity and retention of cod eggs from the different subpopulations. The model reproduced the observed variability and mesoscale activity in the Norwegian Coastal Current. Eggs released at an oceanic spawning area were transported northwards along the coastline. Coastal cod eggs had intermediate connectivity with each other and fjord cod eggs had high local retention. Although the high retention of eggs in fjord areas is mainly caused by a subsurface distribution of eggs, the intermediate retention of eggs from coastal spawning areas is caused by small-scale eddies in-between many small islands. The high-resolution ocean model made it possible to reveal these specific dispersal patterns. The high retention of early life stages in fjords combined with strong homing to spawning areas indicates that fjord subpopulations may be described as a metapopulation. |
format |
Text |
author |
Myksvoll, Mari S. Jung, Kyung-Mi Albretsen, Jon Sundby, Svein |
author_facet |
Myksvoll, Mari S. Jung, Kyung-Mi Albretsen, Jon Sundby, Svein |
author_sort |
Myksvoll, Mari S. |
title |
Modelling dispersal of eggs and quantifying connectivity among Norwegian coastal cod subpopulations |
title_short |
Modelling dispersal of eggs and quantifying connectivity among Norwegian coastal cod subpopulations |
title_full |
Modelling dispersal of eggs and quantifying connectivity among Norwegian coastal cod subpopulations |
title_fullStr |
Modelling dispersal of eggs and quantifying connectivity among Norwegian coastal cod subpopulations |
title_full_unstemmed |
Modelling dispersal of eggs and quantifying connectivity among Norwegian coastal cod subpopulations |
title_sort |
modelling dispersal of eggs and quantifying connectivity among norwegian coastal cod subpopulations |
publisher |
Oxford University Press |
publishDate |
2014 |
url |
http://icesjms.oxfordjournals.org/cgi/content/short/71/4/957 https://doi.org/10.1093/icesjms/fst022 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic cod Arctic Northeast Arctic cod |
genre_facet |
Arctic cod Arctic Northeast Arctic cod |
op_relation |
http://icesjms.oxfordjournals.org/cgi/content/short/71/4/957 http://dx.doi.org/10.1093/icesjms/fst022 |
op_rights |
Copyright (C) 2014, International Council for the Exploration of the Sea/Conseil International pour l'Exploration de la Mer |
op_doi |
https://doi.org/10.1093/icesjms/fst022 |
container_title |
ICES Journal of Marine Science |
container_volume |
71 |
container_issue |
4 |
container_start_page |
957 |
op_container_end_page |
969 |
_version_ |
1766304303817949184 |