Cardinale, Massimiliano
- Institutionen för akvatiska resurser (SLU Aqua), Sveriges lantbruksuniversitet
Sammanfattning
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.
Nyckelord
climate; cod; Irish Sea; recruitment success; spawning stock biomass; threshold dynamics
Publicerad i
Fisheries Oceanography
2014, volym: 23, nummer: 1, sidor: 54-64
SLU författare
Bartolino, Valerio
- Institutionen för akvatiska resurser (SLU Aqua), Sveriges lantbruksuniversitet
- Göteborgs Universitet
- Institutionen för akvatiska resurser (SLU Aqua), Sveriges lantbruksuniversitet
Globala målen (SDG)
UKÄ forskningsämne
Fisk- och akvakulturforskning
Oceanografi, hydrologi, vattenresurser
Publikationens identifierare
- DOI: https://doi.org/10.1111/fog.12043
Permanent länk till denna sida (URI)
https://res.slu.se/id/publ/50954