Barents Sea capelin and cod stock scenarios: Testing biological consequences of economical based management
We present a scenario-model for the joint Norwegian and Russian managed capelin and cod stocks in the Barents Sea. The model basically consists of two sub models. The first is an autonomous management model which, based on profit functions and growth functions with coefficients calibrated from real...
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International Institute of Fisheries Economics and Trade
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ftoregonstate:ir.library.oregonstate.edu:x633f179p 2024-09-15T17:57:47+00:00 Barents Sea capelin and cod stock scenarios: Testing biological consequences of economical based management Sandal, Leif Kristoffer Tjelmeland, Sigurd https://ir.library.oregonstate.edu/concern/conference_proceedings_or_journals/x633f179p English [eng] eng unknown International Institute of Fisheries Economics and Trade https://ir.library.oregonstate.edu/concern/conference_proceedings_or_journals/x633f179p Copyright Not Evaluated Capelin fisheries Fishery management Cod fisheries Fish populations Other ftoregonstate 2024-07-22T18:06:05Z We present a scenario-model for the joint Norwegian and Russian managed capelin and cod stocks in the Barents Sea. The model basically consists of two sub models. The first is an autonomous management model which, based on profit functions and growth functions with coefficients calibrated from real data, finds a feedback rule for maximizing the Norwegian share of the fishery rent by using numerical dynamic programming. The second (Bifrost) is a biological multi-species growth model provided by the Institute of Marine Resources. This model has higher resolution than the simple top-down growth used in the management model. With this we simulate possible scenarios resulting from employing the management model as decision making instrument in the real world. Doing so, we concentrate on possible future catch and stock sizes rather than on economics. Scenarios from six different strategies are tested, of which two of them is pure biological and inspired from existing management. Bifrost is applied direct to measure total allow catch (TAC) in these strategies, whereas the four economic strategies are found from the management model. These strategies are compared with the biologic strategies and the results are rather promising on the behalf of the economical strategies. Keywords: Barents Sea, Economical based management, Capelin and cod stocks, Biological consequences, Fisheries Economics Other/Unknown Material Barents Sea ScholarsArchive@OSU (Oregon State University) |
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ScholarsArchive@OSU (Oregon State University) |
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English unknown |
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Capelin fisheries Fishery management Cod fisheries Fish populations |
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Capelin fisheries Fishery management Cod fisheries Fish populations Sandal, Leif Kristoffer Tjelmeland, Sigurd Barents Sea capelin and cod stock scenarios: Testing biological consequences of economical based management |
topic_facet |
Capelin fisheries Fishery management Cod fisheries Fish populations |
description |
We present a scenario-model for the joint Norwegian and Russian managed capelin and cod stocks in the Barents Sea. The model basically consists of two sub models. The first is an autonomous management model which, based on profit functions and growth functions with coefficients calibrated from real data, finds a feedback rule for maximizing the Norwegian share of the fishery rent by using numerical dynamic programming. The second (Bifrost) is a biological multi-species growth model provided by the Institute of Marine Resources. This model has higher resolution than the simple top-down growth used in the management model. With this we simulate possible scenarios resulting from employing the management model as decision making instrument in the real world. Doing so, we concentrate on possible future catch and stock sizes rather than on economics. Scenarios from six different strategies are tested, of which two of them is pure biological and inspired from existing management. Bifrost is applied direct to measure total allow catch (TAC) in these strategies, whereas the four economic strategies are found from the management model. These strategies are compared with the biologic strategies and the results are rather promising on the behalf of the economical strategies. Keywords: Barents Sea, Economical based management, Capelin and cod stocks, Biological consequences, Fisheries Economics |
format |
Other/Unknown Material |
author |
Sandal, Leif Kristoffer Tjelmeland, Sigurd |
author_facet |
Sandal, Leif Kristoffer Tjelmeland, Sigurd |
author_sort |
Sandal, Leif Kristoffer |
title |
Barents Sea capelin and cod stock scenarios: Testing biological consequences of economical based management |
title_short |
Barents Sea capelin and cod stock scenarios: Testing biological consequences of economical based management |
title_full |
Barents Sea capelin and cod stock scenarios: Testing biological consequences of economical based management |
title_fullStr |
Barents Sea capelin and cod stock scenarios: Testing biological consequences of economical based management |
title_full_unstemmed |
Barents Sea capelin and cod stock scenarios: Testing biological consequences of economical based management |
title_sort |
barents sea capelin and cod stock scenarios: testing biological consequences of economical based management |
publisher |
International Institute of Fisheries Economics and Trade |
url |
https://ir.library.oregonstate.edu/concern/conference_proceedings_or_journals/x633f179p |
genre |
Barents Sea |
genre_facet |
Barents Sea |
op_relation |
https://ir.library.oregonstate.edu/concern/conference_proceedings_or_journals/x633f179p |
op_rights |
Copyright Not Evaluated |
_version_ |
1810433957023449088 |