A model-based evaluation of Marine Protected Areas: the example of eastern Baltic cod (Gadus morhua callarias L.)
The eastern Baltic cod stock collapsed as a consequence of climate-driven adverse hydrographic conditions and over fishing and has remained at historically low levels. Spatio-temporal fishing closures [Marine Protected Areas (MPAs)] have been implemented since 1995, to protect and restore the spawni...
Published in: | ICES Journal of Marine Science |
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Online Access: | https://orbit.dtu.dk/en/publications/7f345c6a-323c-4903-8067-69fc5e26e9e4 https://doi.org/10.1093/icesjms/fsn166 |
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ftdtupubl:oai:pure.atira.dk:publications/7f345c6a-323c-4903-8067-69fc5e26e9e4 2024-06-23T07:52:57+00:00 A model-based evaluation of Marine Protected Areas: the example of eastern Baltic cod (Gadus morhua callarias L.) Kraus, Gerd Pelletier, Dominique Dubreuil, Julien Möllmann, Christian Hinrichsen, Hans-Harald Bastardie, Francois Vermard, Youen Mahevas, Stephanie 2009 https://orbit.dtu.dk/en/publications/7f345c6a-323c-4903-8067-69fc5e26e9e4 https://doi.org/10.1093/icesjms/fsn166 eng eng https://orbit.dtu.dk/en/publications/7f345c6a-323c-4903-8067-69fc5e26e9e4 info:eu-repo/semantics/restrictedAccess Kraus , G , Pelletier , D , Dubreuil , J , Möllmann , C , Hinrichsen , H-H , Bastardie , F , Vermard , Y & Mahevas , S 2009 , ' A model-based evaluation of Marine Protected Areas: the example of eastern Baltic cod (Gadus morhua callarias L.) ' , ICES Journal of Marine Science , vol. 66 , no. 1 , pp. 109-121 . https://doi.org/10.1093/icesjms/fsn166 Model Stock recovery Fishery management Baltic cod Marine Protected Areas /dk/atira/pure/sustainabledevelopmentgoals/climate_action name=SDG 13 - Climate Action /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water article 2009 ftdtupubl https://doi.org/10.1093/icesjms/fsn166 2024-06-11T14:27:12Z The eastern Baltic cod stock collapsed as a consequence of climate-driven adverse hydrographic conditions and over fishing and has remained at historically low levels. Spatio-temporal fishing closures [Marine Protected Areas (MPAs)] have been implemented since 1995, to protect and restore the spawning stock. However, no signs of recovery have been observed yet, either suggesting that MPAs are an inappropriate management measure or pointing towards suboptimal closure design. We used the spatially explicit fishery simulation model ISIS-Fish to evaluate proposed and implemented fishery closures, combining an age-structured population module with a multifleet exploitation module and a management module in a single model environment. The model is parameterized based on (i) the large amount of biological knowledge available for cod and (ii) an analysis of existing spatially disaggregated fishery data. As the population dynamics of eastern Baltic cod depend strongly on the climate-driven hydrographic regime, we considered two production regimes of the stock. MPAs were only effective for stock recovery when they reduced overall fishing effort. The performance of MPAs needs to be evaluated relative to environmental regimes, especially for stocks facing strong environmental variability. Article in Journal/Newspaper Gadus morhua Technical University of Denmark: DTU Orbit ICES Journal of Marine Science 66 1 109 121 |
institution |
Open Polar |
collection |
Technical University of Denmark: DTU Orbit |
op_collection_id |
ftdtupubl |
language |
English |
topic |
Model Stock recovery Fishery management Baltic cod Marine Protected Areas /dk/atira/pure/sustainabledevelopmentgoals/climate_action name=SDG 13 - Climate Action /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water |
spellingShingle |
Model Stock recovery Fishery management Baltic cod Marine Protected Areas /dk/atira/pure/sustainabledevelopmentgoals/climate_action name=SDG 13 - Climate Action /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water Kraus, Gerd Pelletier, Dominique Dubreuil, Julien Möllmann, Christian Hinrichsen, Hans-Harald Bastardie, Francois Vermard, Youen Mahevas, Stephanie A model-based evaluation of Marine Protected Areas: the example of eastern Baltic cod (Gadus morhua callarias L.) |
topic_facet |
Model Stock recovery Fishery management Baltic cod Marine Protected Areas /dk/atira/pure/sustainabledevelopmentgoals/climate_action name=SDG 13 - Climate Action /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water |
description |
The eastern Baltic cod stock collapsed as a consequence of climate-driven adverse hydrographic conditions and over fishing and has remained at historically low levels. Spatio-temporal fishing closures [Marine Protected Areas (MPAs)] have been implemented since 1995, to protect and restore the spawning stock. However, no signs of recovery have been observed yet, either suggesting that MPAs are an inappropriate management measure or pointing towards suboptimal closure design. We used the spatially explicit fishery simulation model ISIS-Fish to evaluate proposed and implemented fishery closures, combining an age-structured population module with a multifleet exploitation module and a management module in a single model environment. The model is parameterized based on (i) the large amount of biological knowledge available for cod and (ii) an analysis of existing spatially disaggregated fishery data. As the population dynamics of eastern Baltic cod depend strongly on the climate-driven hydrographic regime, we considered two production regimes of the stock. MPAs were only effective for stock recovery when they reduced overall fishing effort. The performance of MPAs needs to be evaluated relative to environmental regimes, especially for stocks facing strong environmental variability. |
format |
Article in Journal/Newspaper |
author |
Kraus, Gerd Pelletier, Dominique Dubreuil, Julien Möllmann, Christian Hinrichsen, Hans-Harald Bastardie, Francois Vermard, Youen Mahevas, Stephanie |
author_facet |
Kraus, Gerd Pelletier, Dominique Dubreuil, Julien Möllmann, Christian Hinrichsen, Hans-Harald Bastardie, Francois Vermard, Youen Mahevas, Stephanie |
author_sort |
Kraus, Gerd |
title |
A model-based evaluation of Marine Protected Areas: the example of eastern Baltic cod (Gadus morhua callarias L.) |
title_short |
A model-based evaluation of Marine Protected Areas: the example of eastern Baltic cod (Gadus morhua callarias L.) |
title_full |
A model-based evaluation of Marine Protected Areas: the example of eastern Baltic cod (Gadus morhua callarias L.) |
title_fullStr |
A model-based evaluation of Marine Protected Areas: the example of eastern Baltic cod (Gadus morhua callarias L.) |
title_full_unstemmed |
A model-based evaluation of Marine Protected Areas: the example of eastern Baltic cod (Gadus morhua callarias L.) |
title_sort |
model-based evaluation of marine protected areas: the example of eastern baltic cod (gadus morhua callarias l.) |
publishDate |
2009 |
url |
https://orbit.dtu.dk/en/publications/7f345c6a-323c-4903-8067-69fc5e26e9e4 https://doi.org/10.1093/icesjms/fsn166 |
genre |
Gadus morhua |
genre_facet |
Gadus morhua |
op_source |
Kraus , G , Pelletier , D , Dubreuil , J , Möllmann , C , Hinrichsen , H-H , Bastardie , F , Vermard , Y & Mahevas , S 2009 , ' A model-based evaluation of Marine Protected Areas: the example of eastern Baltic cod (Gadus morhua callarias L.) ' , ICES Journal of Marine Science , vol. 66 , no. 1 , pp. 109-121 . https://doi.org/10.1093/icesjms/fsn166 |
op_relation |
https://orbit.dtu.dk/en/publications/7f345c6a-323c-4903-8067-69fc5e26e9e4 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1093/icesjms/fsn166 |
container_title |
ICES Journal of Marine Science |
container_volume |
66 |
container_issue |
1 |
container_start_page |
109 |
op_container_end_page |
121 |
_version_ |
1802644403338084352 |