UNCOVER – Case study Barents Sea
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UNCOVER – Case study Barents Sea
Bjarte Bogstad,
IMR, Bergen, Norway
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Participants
• IMR, Bergen, Norway
• PINRO, Murmansk, Russia
• University of Aberdeen, UK
• University of Bergen, Norway
• CEFAS, Lowestoft, UK
• IFM, Hirtshals, Denmark
• IIASA, Laxenburg, Austria
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Species
• Cod
• Herring
• Capelin
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Fish stock size in the Barents Sea
0
1
2
3
4
5
6
7
8
1973 1976 1979 1982 1985 1988 1991 1994 1997 2000 2003
Year
mill
. to
nn
es
Cod 3+
Capelin 1+
Herring 1+2
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Catch of cod, capelin and herring
0
500
1000
1500
2000
2500
3000
1907 1915 1923 1931 1939 1947 1955 1963 1971 1979 1987 1995 2003
Year
10
00
ton
ne
s
Cod
Capelin
Herring
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WP1
• Time series of total egg production for cod and herring (R. Nash)
• Maternal effects for herring (A. Geffen)• Fisheries induced evolution (U. Dieckmann)• Changes in herring distribution over 50 years (A.
Krysov)• IBM for migration of adult herring based on
behavioral model and 3D ocean models (G. Huse)
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WP2
• Effect of climate on cod and herring recruitment (O. Titov)
• Life cycle strategy of cod (V. Tretyak)• Larval growth (A. Folkvord)• Cod recruitment forecast (O. Titov)• Process knowledge in IBMs (ECOBE) (Ø. Fiksen)• Recovery scenarios modelling first half year of
life (S. Sundby)
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WP3
• Fit Gadget (IMR) and STOCOBAR (PINRO) to historical data (B. Bogstad/A. Filin)
• Description of temporal/spatial changes in predation by cod (A. Dolgov/B. Bogstad)
• Improve Gadget/STOCOBAR cod predation models (B. Bogstad/A. Filin)
• Note: Gadget model output from BECAUSE
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WP4
• Identify data, information and models relevant to recovery questions (D. Howell/ Y. Kovalev/ T. Marshall)
• Develop operational framework (FEMS) modules accordingly (D. Howell/ Y. Kovalev/ T. Marshall/L. Kell)
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WP5
• Interviews with stakeholders (D. Wilson)
• Describe compliance and legitimacy expectation (D. Wilson)
• Note that stakeholders are Nor-Russ. Fisheries Commission (cod, capelin) and Norway, Russia, Iceland, Faroes and EU (herring)