Direct and indirect climate forcing in a multi-species marine system

Leif Christian Stige; Geir Ottersen; Padmini Dalpadado; Kung-Sik Chan; Dag Ø Hjermann; Dmitry L Lajus; Natalia A Yaragina; Nils Chr Stenseth

doi:10.1098/rspb.2010.0602

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Direct and indirect climate forcing in a multi-species marine system

Journal article

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Peer reviewed

Direct and indirect climate forcing in a multi-species marine system

Leif Christian Stige, Geir Ottersen, Padmini Dalpadado, Kung-Sik Chan, Dag Ø Hjermann, Dmitry L Lajus, Natalia A Yaragina and Nils Chr Stenseth

Proceedings of the Royal Society. B, Biological sciences, Vol.277(1699), pp.3411-3420

11/22/2010

DOI: 10.1098/rspb.2010.0602

PMCID: PMC2982221

PMID: 20538646

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Abstract

Interactions within and between species complicate quantification of climate effects, by causing indirect, often delayed, effects of climate fluctuations and compensation of mortality. Here we identify direct and indirect climate effects by analysing unique Russian time-series data from the Norwegian Sea-Barents Sea ecosystem on the first life stages of cod, capelin, herring and haddock, their predators, competitors and zooplanktonic prey. By analysing growth and survival from one life stage to the next (eggs-larvae-juveniles-recruits), we find evidence for both bottom-up, direct and top-down effects of climate. Ambient zooplankton biomass predicts survival of all species, whereas ambient temperature mainly affects survival through effects on growth. In warm years, all species experienced improved growth and feeding conditions. Cohorts born following a warm year will, however, experience increased predation and competition because of increased densities of subadult cod and herring, leading to delayed climate effects. While climate thus affects early growth and survival through several mechanisms, only some of the identified mechanisms were found to be significant predictors of population growth. In particular, our findings exemplify that climate impacts are barely propagated to later life stages when density dependence is strong.

Oceans and Seas

Animals

Climate Change

Larva

Models, Biological

Ecosystem

Ovum

Fishes - physiology

Zooplankton - physiology

Population Dynamics

Details

Title: Subtitle: Direct and indirect climate forcing in a multi-species marine system
Creators: Leif Christian Stige - Centre for Ecological and Evolutionary Synthesis, Department of Biology, University of Oslo, PO Box 1066 Blindern, N-0316 Oslo, Norway. l.c.stige@bio.uio.no
Geir Ottersen
Padmini Dalpadado
Kung-Sik Chan
Dag Ø Hjermann
Dmitry L Lajus
Natalia A Yaragina
Nils Chr Stenseth
Resource Type: Journal article
Publication Details: Proceedings of the Royal Society. B, Biological sciences, Vol.277(1699), pp.3411-3420
DOI: 10.1098/rspb.2010.0602
PMID: 20538646
PMCID: PMC2982221
NLM abbreviation: Proc Biol Sci
ISSN: 1471-2970
eISSN: 1471-2954
Publisher: England
Language: English
Date published: 11/22/2010
Academic Unit: Statistics and Actuarial Science; Radiology
Record Identifier: 9983985914802771

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