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dc.contributor.authorChristie, Hartvig C
dc.contributor.authorGundersen, Hege
dc.contributor.authorRinde, Eli
dc.contributor.authorFilbee-Dexter, Karen
dc.contributor.authorNorderhaug, Kjell Magnus
dc.contributor.authorPedersen, Torstein
dc.contributor.authorBekkby, Trine
dc.contributor.authorGitmark, Janne Kim
dc.contributor.authorFagerli, Camilla With
dc.date.accessioned2019-06-11T12:20:20Z
dc.date.available2019-06-11T12:20:20Z
dc.date.created2019-02-13T14:55:20Z
dc.date.issued2019
dc.identifier.citationEcology and Evolution. 2019, 9 2847-2862.nb_NO
dc.identifier.issn2045-7758
dc.identifier.urihttp://hdl.handle.net/11250/2600506
dc.description.abstractOngoing changes along the northeastern Atlantic coastline provide an opportunity to explore the influence of climate change and multitrophic interactions on the recovery of kelp. Here, vast areas of sea urchin‐dominated barren grounds have shifted back to kelp forests, in parallel with changes in sea temperature and predator abundances. We have compiled data from studies covering more than 1,500‐km coastline in northern Norway. The dataset has been used to identify regional patterns in kelp recovery and sea urchin recruitment, and to relate these to abiotic and biotic factors, including structurally complex substrates functioning as refuge for sea urchins. The study area covers a latitudinal gradient of temperature and different levels of predator pressure from the edible crab (Cancer pagurus) and the red king crab (Paralithodes camtschaticus). The population development of these two sea urchin predators and a possible predator on crabs, the coastal cod (Gadus morhua), were analyzed. In the southernmost and warmest region, kelp forests recovery and sea urchin recruitment are mainly low, although sea urchins might also be locally abundant. Further north, sea urchin barrens still dominate, and juvenile sea urchin densities are high. In the northernmost and cold region, kelp forests are recovering, despite high recruitment and densities of sea urchins. Here, sea urchins were found only in refuge habitats, whereas kelp recovery occurred mainly on open bedrock. The ocean warming, the increase in the abundance of edible crab in the south, and the increase in invasive red king crab in the north may explain the observed changes in kelp recovery and sea urchin distribution. The expansion of both crab species coincided with a population decline in the top‐predator coastal cod. The role of key species (sea urchins, kelp, cod, and crabs) and processes involved in structuring the community are hypothesized in a conceptual model, and the knowledge behind the suggested links and interactions is explored.nb_NO
dc.language.isoengnb_NO
dc.titleCan multitrophic interactions and ocean warming influence large-scale kelp recovery?nb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.description.versionpublishedVersionnb_NO
dc.source.pagenumber2847-2862nb_NO
dc.source.volume9nb_NO
dc.source.journalEcology and Evolutionnb_NO
dc.identifier.doi10.1002/ece3.4963
dc.identifier.cristin1677061
dc.relation.projectNorsk institutt for vannforskning: NIVA-prosjekt: 10461nb_NO
dc.relation.projectNorges forskningsråd: 188955nb_NO
dc.relation.projectNorges forskningsråd: 255085nb_NO
dc.relation.projectNorges forskningsråd: 160016nb_NO
dc.relation.projectNorges forskningsråd: 280732nb_NO
dc.relation.projectFramsenteret: ?nb_NO
cristin.unitcode7431,0,0,0
cristin.unitnameHavforskningsinstituttet
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode1


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