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Linking cod (Gadus ...
Linking cod (Gadus morhua) and climate: investigating variability in Irish Sea cod recruitment
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Beggs, S. E. (author)
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- Cardinale, Massimiliano (author)
- Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för akvatiska resurser,Department of Aquatic Resources
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Gowen, R. J. (author)
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- Bartolino, Valerio, 1979 (author)
- Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Gothenburg University,Göteborgs universitet,Institutionen för geovetenskaper,Department of Earth Sciences,Institutionen för akvatiska resurser,Department of Aquatic Resources,University of Gothenburg
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(creator_code:org_t)
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- 2013-07-16
- 2014
- English.
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In: Fisheries Oceanography. - : Wiley. - 1054-6006 .- 1365-2419. ; 23:1, s. 54-64
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https://gup.ub.gu.se...
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https://doi.org/10.1...
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Abstract
Subject headings
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- How climatic variability and anthropogenic pressures interact to influence recruitment is a key factor in achieving sustainable resource management. However, the combined effects of these pressures can make it difficult to detect non-stationary interactions or shifts in the relationships with recruitment. Here we examine the links between climate and Irish Sea cod recruitment during a period of declining spawning stock biomass (SSB). Specifically, we test for a shift in the relationship between recruitment, SSB and climate by comparing an additive (generalized additive model, GAM) and non-additive threshold model (TGAM). The relationship between recruitment success, SSB and the climatic driver, sea surface temperature, was best described by the TGAM, with a threshold identified between recruitment and SSB at approximately 7900t. The analysis suggests a threshold shift in the relationship between recruitment and SSB in Irish Sea cod, with cod recruitment being more sensitive to climatic variability during the recent low SSB regime.
Subject headings
- NATURVETENSKAP -- Biologi -- Ekologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Ecology (hsv//eng)
- LANTBRUKSVETENSKAPER -- Lantbruksvetenskap, skogsbruk och fiske -- Fisk- och akvakulturforskning (hsv//swe)
- AGRICULTURAL SCIENCES -- Agriculture, Forestry and Fisheries -- Fish and Aquacultural Science (hsv//eng)
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Oceanografi, hydrologi och vattenresurser (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Oceanography, Hydrology and Water Resources (hsv//eng)
Keyword
- climate
- cod
- Irish Sea
- recruitment success
- spawning stock biomass
- threshold dynamics
- north-atlantic oscillation
- marine fish population
- trophic cascades
- interannual variability
- surface temperature
- spawning stock
- juvenile
- fish
- biomass
- ecosystem
- gyre
- ANGESymposium on Resiliency of Gadid Stocks to Fishing and Climate Change
- OCT 31-NOV 03
- 2006
Publication and Content Type
- ref (subject category)
- art (subject category)
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