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dc.contributor.authorHedger, Richard David
dc.contributor.authorSauterleute, Julian Friedrich
dc.contributor.authorSundt-Hansen, Line Elisabeth Breivik
dc.contributor.authorForseth, Torbjørn
dc.contributor.authorUgedal, Ola
dc.contributor.authorDiserud, Ola Håvard
dc.contributor.authorBakken, Tor Haakon
dc.date.accessioned2018-04-26T13:33:18Z
dc.date.available2018-04-26T13:33:18Z
dc.date.created2018-04-09T09:57:48Z
dc.date.issued2018
dc.identifier.issn1936-0584
dc.identifier.urihttp://hdl.handle.net/11250/2496204
dc.description.abstractStudies of hydropeaking‐induced stranding mortality on fish populations have been confined to analysis of empirical data and/or short‐term hydraulic‐habitat modelling of individual events and are thus limited as to how they may be used to infer long‐term effects in fish populations. In this study, the effects of stranding mortality on an Atlantic salmon population were simulated using an individual‐based Atlantic salmon population model with the objective of determining the sensitivity of population dynamics to stranding. It was found that density‐dependent mortality (an alternative source of mortality in juvenile Atlantic salmon) partially compensated for stranding mortality, acting as a negative feedback mechanism that dampened change in population abundance. Stranding caused a perturbation in population dynamics, and effects of individual stranding events persisted in time across the life stages of the population. Effects on population abundance depended on the time of year when stranding was applied, both because of intra‐annual changes in stranding mortality probability and because of intra‐annual changes in the ability of density‐dependent mortality to compensate for stranding mortality. We concluded that empirical measurements of stranding mortality have limited potential for inference of overall effects on the population, and a more dynamic modelling approach, incorporating system feedback, allows for a better modelling of the impact of stranding. Sensitivity analysis showed that population abundance was highly sensitive to density‐dependent mortality, and we suggest that this area should be prioritized for further research when investigating the effects of hydropeaking on rivers.nb_NO
dc.language.isoengnb_NO
dc.subjectAtlantic salmonnb_NO
dc.subjectdensity‐dependent mortalitynb_NO
dc.subjecthydropeakingnb_NO
dc.subjectpopulation dynamicsnb_NO
dc.subjectstranding mortalitynb_NO
dc.titleModelling the effect of hydropeaking‐induced stranding mortality on Atlantic salmon population abundancenb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.description.versionacceptedVersionnb_NO
dc.description.versionpublishedVersionnb_NO
dc.subject.nsiVDP::Zoologiske og botaniske fag: 480nb_NO
dc.subject.nsiVDP::Zoology and botany: 480nb_NO
dc.source.journalEcohydrologynb_NO
dc.identifier.doi10.1002/eco.1960
dc.identifier.cristin1578243
dc.relation.projectNorges forskningsråd: 193818nb_NO
cristin.unitcode7511,3,0,0
cristin.unitcode7511,0,0,0
cristin.unitnameAvdeling for akvatisk økologi
cristin.unitnameNorsk institutt for naturforskning
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.fulltextpostprint
cristin.qualitycode1


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