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dc.contributor.authorde la Vega, Camille
dc.contributor.authorMahaffey, Claire
dc.contributor.authorTuerena, Robyn E.
dc.contributor.authorYurkowski, David J.
dc.contributor.authorFerguson, Steven H.
dc.contributor.authorStenson, Garry B.
dc.contributor.authorNordøy, Erling S.
dc.contributor.authorHaug, Tore
dc.contributor.authorBiuw, Martin
dc.contributor.authorSmout, Sophie
dc.contributor.authorHopkins, Jo
dc.contributor.authorTagliabue, Alessandro
dc.contributor.authorJeffreys, Rachel M.
dc.identifier.citationde la Vega , C , Mahaffey , C , Tuerena , R E , Yurkowski , D J , Ferguson , S H , Stenson , G B , Nordøy , E S , Haug , T , Biuw , M , Smout , S , Hopkins , J , Tagliabue , A & Jeffreys , R M 2020 , ' Arctic seals as tracers of environmental and ecological change ' , Limnology and Oceanography Letters , vol. Early View .
dc.identifier.otherRIS: urn:4AFC867C20AFCA513A1610B20D9E7AB0
dc.descriptionThis work resulted from the ARISE project (NE/P006035/1, NE/P006310/1, and NE/P006000/2), part of the Changing Arctic Ocean programme, funded by the UKRI Natural Environment Research Council (NERC).en
dc.description.abstractKnowledge of species trophic position (TP) is an essential component of ecosystem management. Determining TP from stable nitrogen isotopes (δ15N) in predators requires understanding how these tracers vary across environments and how they relate to predator isotope composition. We used two seal species as a model for determining TP across large spatial scales in the Arctic. δ15N in seawater nitrate (δ15NNO3) and seal muscle amino acids (δ15NAA) were determined to independently characterize the base of the food web and the TP of harp and ringed seals, demonstrating a direct link between δ15NNO3 and δ15NAA. Our results show that the spatial variation in δ15NAA in seals reflects the δ15NNO3 end members in Pacific vs. Atlantic waters. This study provides a reference for best practice on accurate comparison of TP in predators and as such, provides a framework to assess the impact of environmental and human-induced changes on ecosystems at pan-Arctic scales.
dc.relation.ispartofLimnology and Oceanography Lettersen
dc.subjectGE Environmental Sciencesen
dc.subjectGC Oceanographyen
dc.subjectQH301 Biologyen
dc.titleArctic seals as tracers of environmental and ecological changeen
dc.typeJournal articleen
dc.contributor.institutionUniversity of St Andrews. School of Biologyen
dc.contributor.institutionUniversity of St Andrews. Sea Mammal Research Uniten
dc.contributor.institutionUniversity of St Andrews. Scottish Oceans Instituteen
dc.contributor.institutionUniversity of St Andrews. Centre for Research into Ecological & Environmental Modellingen
dc.contributor.institutionUniversity of St Andrews. Coastal Resources Management Groupen
dc.description.statusPeer revieweden

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