Spatial patterns of age-0 cod survival in the Barents Sea ...

• Main Authors: Ciannelli, Lorenzo, Dingsør, Gjert E., Bogstad, Bjarte, Ottersen, Geir, Chan, Kung-Sik, Gjøsæter, Harald, Stenseth, Nils Chr.
• Format: Article in Journal/Newspaper
• Language: unknown
• Published: ASC 2005 - AA - Theme session 2024
• Subjects: Fisheries and aquaculture; Ecosystem observation, processes and dynamics; Barents Sea; Gadus morhua
• Online Access: https://dx.doi.org/10.17895/ices.pub.25350085.v1; https://ices-library.figshare.com/articles/conference_contribution/Spatial_patterns_of_age-0_cod_survival_in_the_Barents_Sea/25350085/1

No abstracts are to be cited without prior reference to the author.Apart from human harvest, recruitment dynamics is conceivably recognized as the main source of population variability of marine fish stocks. Factors affecting recruitment dynamics can change over both temporal and spatial scales. It follows that at the same time, over the entire range of distribution of a single population, different individuals may experience different level of environmental forcing and survival, which may not be well represented by average conditions throughout the entire distribution range. In this study we focus on the spatial pattern and its relative sources of variability in the survival of the Arcto-Norwegian cod (Gadus morhua L.) from the age-0 to the age-1 stage. This is a delicate phase of the cod pre-recruitment dynamics, as individuals are confronted with a suite of survival challenges, such as settlement, pre-winter body condition, growth, and predation avoidance. During the over 20 years analyzed (1980-2004), we ...