Hierarchical modelling of temperature and habitat size effects on population dynamics of North Atlantic cod

Understanding how temperature affects cod (Gadus morhua) ecology is important for forecasting how populations will develop as climate changes in future. The effects of spawning-season temperature and habitat size on cod recruitment dynamics have been investigated across the North Atlantic. Ricker an...

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Bibliographic Details
Published in:ICES Journal of Marine Science
Main Authors: Mantzouni, Irene, Sørensen, Helle, O'Hara, Robert B., MacKenzie, Brian
Format: Article in Journal/Newspaper
Language:English
Published: 2010
Subjects:
cod
North Atlantic
uncertainty
hierarchical models
carrying capacity
temperature
atlantic cod
Gadus morhua
Online Access:https://orbit.dtu.dk/en/publications/911304b7-9169-4495-9b8b-211899b4b3f0
https://doi.org/10.1093/icesjms/fsp291
Description
Summary:Understanding how temperature affects cod (Gadus morhua) ecology is important for forecasting how populations will develop as climate changes in future. The effects of spawning-season temperature and habitat size on cod recruitment dynamics have been investigated across the North Atlantic. Ricker and Beverton and Holt stock–recruitment (SR) models were extended by applying hierarchical methods, mixed-effects models, and Bayesian inference to incorporate the influence of these ecosystem factors on model parameters representing cod maximum reproductive rate and carrying capacity. We identified the pattern of temperature effects on cod productivity at the species level and estimated SR model parameters with increased precision. Temperature impacts vary geographically, being positive in areas where temperatures are

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