Functional roles and redundancy of demersal Barents Sea fish: ecological implications of environmental change

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• dc.contributor.author Aune, Magnus
• dc.contributor.author Aschan, Michaela Maria
• dc.contributor.author Greenacre, Michael
• dc.contributor.author Dolgov, Andrey V.
• dc.contributor.author Fossheim, Maria
• dc.contributor.author Primicerio, Raul
• dc.date.accessioned 2020-05-28T08:42:50Z
• dc.date.available 2020-05-28T08:42:50Z
• dc.date.issued 2018
• dc.description.abstract When facing environmental change and intensified anthropogenic impact on marine ecosystems, extensive knowledge of how these systems are functioning is required in order to manage them properly. However, in high-latitude ecosystems, where climate change is expected to have substantial ecological impact, the ecosystem functions of biological species have received little attention, partly due to the limited biological knowledge of Arctic species. Functional traits address the ecosystem functions of member species, allowing the functionality of communities to be characterised and the degree of functional redundancy to be assessed. Ecosystems with higher functional redundancy are expected to be less affected by species loss, and therefore less sensitive to disturbance. Here we highlight and compare typical functional characteristics of Arctic and boreal fish in the Barents Sea and address the consequences of a community-wide reorganization driven by climate warming on functional redundancy and characterization. Based on trait and fish community composition data, we assessed functional redundancy of the Barents Sea fish community for the period 2004–2012, a period during which this northern region was characterized by rapidly warming water masses and declining sea ice coverage. We identified six functional groups, with distinct spatial distributions, that collectively provide a functional characterization of Barents Sea fish. The functional groups displayed different prevalence in boreal and Arctic water masses. Some functional groups displayed a spatial expansion towards the northeast during the study period, whereas other groups showed a general decline in functional redundancy. Presently, the observed patterns of functional redundancy would seem to provide sufficient scope for buffering against local loss in functional diversity only for the more speciose functional groups. Furthermore, the observed functional reconfiguration may affect future ecosystem functioning in the area. In a period of rapid environmental change, monitoring programs integrating functional traits will help inform management on ecosystem functioning and vulnerability.en
• dc.description.sponsorship This is a contribution to the VULRES project financed by the Fram Centre flagship MIKON (to MA, RP and MF), the European Horizon 2020 project ClimeFish 677039 (to MMA, RP and MF), and the project A transatlantic innovation arena for sustainable development in the Arctic (CoArc), funded by the Norwegian Ministry of Foreign Affairs (to MA and RP). The affiliation of MA is Akvaplan-niva AS. This does not alter our adherence to PLOS ONE policies on sharing data and materials. Akvaplan-niva AS is an approved Norwegian research institute owned by the Norwegian Institute for Water Research, the latter being a foundation owned by the Norwegian government. Akvaplan-niva AS is therefore not a commercial organization. The funders provided support in the form of salaries for authors MA, RP, MF and MMA, but did not have any additional role in the study design, data collection and analysis, decision to publish, or preparation of the manuscript. The specific roles of these authors are articulated in the ‘author contributions’ section.
• dc.format.mimetype application/pdf
• dc.identifier.citation Aune M, Aschan MM, Greenacre M, Dolgov AV, Fossheim M, Primicerio R. Functional roles and redundancy of demersal Barents Sea fish: ecological implications of environmental change. PLoS One. 2018 Nov 21;13(11):e0207451. DOI: 10.1371/journal.pone.0207451
• dc.identifier.doi http://dx.doi.org/10.1371/journal.pone.0207451
• dc.identifier.issn 1932-6203
• dc.identifier.uri http://hdl.handle.net/10230/44845
• dc.language.iso eng
• dc.publisher Public Library of Science (PLoS)
• dc.relation.ispartof PLoS One. 2018 Nov 21;13(11):e0207451
• dc.relation.projectID info:eu-repo/grantAgreement/EC/H2020/677039
• dc.rights © 2018 Aune et al. This is an open access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
• dc.rights.accessRights info:eu-repo/semantics/openAccess
• dc.rights.uri https://creativecommons.org/licenses/by/4.0/
• dc.subject.keyword Sea wateren
• dc.subject.keyword Ecosystem functioningen
• dc.subject.keyword Fishen
• dc.subject.keyword Marine ecosystemsen
• dc.subject.keyword Marine fishen
• dc.subject.keyword Ecosystemsen
• dc.subject.keyword Elasmobranchiien
• dc.subject.keyword Coden
• dc.title Functional roles and redundancy of demersal Barents Sea fish: ecological implications of environmental changeen
• dc.type info:eu-repo/semantics/article
• dc.type.version info:eu-repo/semantics/publishedVersion