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dc.contributor.authorHusson, Berengere
dc.contributor.authorLind, Sigrid
dc.contributor.authorFossheim, Maria
dc.contributor.authorSolvang, Hiroko Kato
dc.contributor.authorSkern-Mauritzen, Mette
dc.contributor.authorPecuchet, Laurene
dc.contributor.authorIngvaldsen, Randi Brunvær
dc.contributor.authorDolgov, Andrey V.
dc.contributor.authorPrimicerio, Raul
dc.date.accessioned2022-08-09T07:17:06Z
dc.date.available2022-08-09T07:17:06Z
dc.date.issued2022-03-06
dc.description.abstractThe warming trend of the Arctic is punctuated by several record-breaking warm years with very low sea ice concentrations. The nature and reversibility of marine ecosystem responses to these multiple extreme climatic events (ECEs) are poorly understood. Here, we investigate the ecological signatures of three successive bottom temperature maxima concomitant with surface ECEs between 2004 and 2017 in the Barents Sea across spatial and organizational scales. We observed community-level redistributions of fish concurrent with ECEs at the scale of the whole Barents Sea. Three groups, characterized by different sets of traits describing their capacity to cope with short-term perturbations, reacted with different timing and intensity to each ECE. Arctic species co-occurred more frequently with large predators and incoming boreal taxa during ECEs, potentially affecting food web structures and functional diversity, accelerating the impacts of long-term climate change. On the species level, responses were highly diversified, with different ECEs impacting different species, and species responses (expansion, geographical shift) varying from one ECE to another, despite the environmental perturbations being similar. Past ECEs impacts, with potential legacy effects, lagged responses, thresholds, and interactions with the underlying warming pressure, could constantly set up new initial conditions that drive the unique ecological signature of each ECE. These results highlight the complexity of ecological reactions to multiple ECEs and give prominence to several sources of process uncertainty in the predictions of climate change impact and risk for ecosystem management. Long-term monitoring and studies to characterize the vertical extent of each ECE are necessary to statistically link demersal species and environmental spatial–temporal patterns. In the future, regular monitoring will be crucial to detect early signals of change and understand the determinism of ECEs, but we need to adapt our models and management to better integrate risk and stochasticity from the complex impacts of global change.en_US
dc.identifier.citationHusson, Lind, Fossheim, Solvang, Skern-Mauritzen, Pecuchet, Ingvaldsen, Dolgov, Primicerio. Successive extreme climatic events lead to immediate, large-scale, and diverse responses from fish in the Arctic. Global Change Biology. 2022;28(11):3728-3744en_US
dc.identifier.cristinIDFRIDAID 2017710
dc.identifier.doi10.1111/gcb.16153
dc.identifier.issn1354-1013
dc.identifier.issn1365-2486
dc.identifier.urihttps://hdl.handle.net/10037/26024
dc.language.isoengen_US
dc.publisherWileyen_US
dc.relation.journalGlobal Change Biology
dc.relation.projectIDNorges forskningsråd: 276730en_US
dc.relation.projectIDUtenriksdepartementet: Arktis 2030 (QZA-15/0137)en_US
dc.relation.projectIDNorges forskningsråd: 288192en_US
dc.rights.accessRightsopenAccessen_US
dc.rights.holderCopyright 2022 The Author(s)en_US
dc.subjectVDP::Matematikk og naturvitenskap: 400::Zoologiske og botaniske fag: 480::Marinbiologi: 497en_US
dc.subjectVDP::Mathematics and natural scienses: 400::Zoology and botany: 480::Marine biology: 497en_US
dc.subjectVDP::Matematikk og naturvitenskap: 400::Zoologiske og botaniske fag: 480::Økologi: 488en_US
dc.subjectVDP::Mathematics and natural scienses: 400::Zoology and botany: 480::Ecology: 488en_US
dc.subjectKlimaendringer / Climate changeen_US
dc.subjectPolhavet / Arctic oceanen_US
dc.subjectØkosystem / Ecosystemen_US
dc.titleSuccessive extreme climatic events lead to immediate, large-scale, and diverse responses from fish in the Arcticen_US
dc.type.versionpublishedVersionen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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