Population dynamics of cod Gadus morhua in the North Sea region : biological density-dependent and climatic density-independent effects

QINGXIAN Chen; Kung-Sik Chan; Kyrre Lekve; Else Torstensen; Jakob Gjøsøaeter; Geir Ottersen; Nils Chr Stenseth

doi:10.3354/meps302219

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Population dynamics of cod Gadus morhua in the North Sea region : biological density-dependent and climatic density-independent effects

Journal article

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Population dynamics of cod Gadus morhua in the North Sea region : biological density-dependent and climatic density-independent effects

QINGXIAN Chen, Kung-Sik Chan, Kyrre Lekve, Else Torstensen, Jakob Gjøsøaeter, Geir Ottersen and Nils Chr Stenseth

Marine ecology. Progress series (Halstenbek), Vol.302, pp.219-232

2005

DOI: 10.3354/meps302219

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Abstract

Through the statistical modeling of monitoring data, we assess the ecological interlinkages between cod Gadus morhua L. in the North Sea, Skagerrak and Kattegat - regions which typically have been considered separate management units. The model includes both within-population density dependence (within and between age classes), as well as density-dependent effects of migration between the North Sea, Skagerrak and Kattegat. Further, the model incorporates the effects of environmental features (such as temperature and the North Atlantic Oscillation). The obtained results are discussed, both with reference to general ecological principles as well as with respect to management implication. Altogether our analysis suggests a unified management regime for the entire region including the North Sea, the open Skagerrak and Kattegat. © Inter-Research 2005.

Synecology

Animal and plant ecology

Animal, plant and microbial ecology

Biological and medical sciences

Fundamental and applied biological sciences. Psychology

General aspects. Techniques

Methods and techniques (sampling, tagging, trapping, modelling...)

Sea water ecosystems

Details

Title: Subtitle: Population dynamics of cod Gadus morhua in the North Sea region : biological density-dependent and climatic density-independent effects
Creators: QINGXIAN Chen - New York State Office of Mental Health, 44 Holland Avenue, Albany, New York 12229, United States
Kung-Sik Chan - University of Iowa
Kyrre Lekve - University of Oslo
Else Torstensen - Institute of Marine Research, Flødevigen Marine Research Station, 4817 His, Norway
Jakob Gjøsøaeter - Institute of Marine Research, Flødevigen Marine Research Station, 4817 His, Norway
Geir Ottersen - Norwegian Institute of Marine Research
Nils Chr Stenseth - University of Oslo
Resource Type: Journal article
Publication Details: Marine ecology. Progress series (Halstenbek), Vol.302, pp.219-232
Publisher: Inter-Research
DOI: 10.3354/meps302219
ISSN: 0171-8630
eISSN: 1616-1599
Language: English
Date published: 2005
Academic Unit: Statistics and Actuarial Science; Radiology
Record Identifier: 9984257632602771

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