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dc.contributor.authorDurant, Joël
dc.contributor.authorOno, Kotaro
dc.contributor.authorLangangen, Øystein Ole Gahr
dc.identifier.citationDurant, J., Ono, K., & Langangen, Ø. (2022). Empirical evidence of nonlinearity in bottom up effect in a marine predator–prey system. Biology letters, 18(11), 1-6.en_US
dc.description.abstractStrength of species interaction may have profound effects on population dynamics. Empirical estimates of interaction strength is often based on the assumption that the interaction strengths are constant. Barents Sea cod and capelin are two fish populations for which such interaction has been acknowledged and used, under the assumption of constant interaction strength, when studying their population dynamics. However, species interaction can often be non-linear in marine ecosystems and might profoundly change our understanding of food chains. Analysing 37 years long survey time series in the Arcto-Boreal Barents Sea with a state-space modelling framework, we demonstrate that the effect of capelin on cod is not linear but shifts depending on capelin abundance: while capelin is beneficial for cod population at high abundance, below the threshold, it becomes less important for cod. Our analysis therefore shows the importance of investigating non-linearity in species interaction and may contribute to an improved understanding on species assemblages.en_US
dc.description.abstractEmpirical evidence of non-linearity in bottom-up effect in a marine predator-prey systemen_US
dc.publisherRoyal Societyen_US
dc.rightsNavngivelse 4.0 Internasjonal*
dc.titleEmpirical evidence of non-linearity in bottom-up effect in a marine predator-prey systemen_US
dc.typePeer revieweden_US
dc.typeJournal articleen_US
dc.rights.holder© 2022 The Author(s)en_US
dc.subject.nsiVDP::Matematikk og Naturvitenskap: 400en_US
dc.source.journalBiology Lettersen_US
dc.relation.projectNorges forskningsråd: 276730en_US
dc.relation.projectNorges forskningsråd: 280467en_US
dc.description.localcodePaid open accessen_US

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Navngivelse 4.0 Internasjonal
Except where otherwise noted, this item's license is described as Navngivelse 4.0 Internasjonal