The role of connectivity in the interplay between climate change and the spread of alien fish in a large Mediterranean river
dc.contributor.author
dc.date.accessioned
2020-11-30T06:59:25Z
dc.date.available
2020-11-30T06:59:25Z
dc.date.issued
2020-11
dc.identifier.issn
1354-1013
dc.identifier.uri
dc.description.abstract
Understanding how global change and connectivity will jointly modify the distribution of riverine species is crucial for conservation biology and environmental management. However, little is known about the interaction between climate change and fragmentation and how movement barriers might impede native species from adjusting their distributions versus limit the further spread of alien species. In this study, we modelled the current and future distributions of 11 native and five alien fishes in the large and heavily fragmented Ebro River, located within the Mediterranean region, which has many freshwater endemics severely threatened by global change. We considered 10 climate change models and five modelling algorithms and assessed the effects of connectivity on the accessibility of future suitable habitats. Thereby, we identify most conflict‐prone river reaches, that is, where barriers pose a particular trade‐off between isolating and negatively impacting native species versus potentially reducing the risk of alien species spread. Our results projected upstream habitat shifts for the vast majority of the species. Climate change affected species differently, with alien species generally showing larger habitat gains compared to natives. Most pronounced distributional changes (i.e. losses of native species and gains of alien species) and compositional turnover might be expected in the lower and mid reaches of large tributaries of the Ebro River. The role of anthropogenic barriers in this context is often ambiguous but rather unfavourable, as they not only restrict native fishes but also alter stream habitats and flow conditions. However, with our spatial modelling framework, we could identify specific river reaches where the connectivity trade‐off in the context of climate change is particularly relevant. Overall, our findings emphasize the importance of the complex effects that climate change, riverine connectivity and alien species are expected to impose on river communities and the urgent need to adapt management strategies accordingly
dc.description.sponsorship
BiodivERsA; Spanish Ministry of Science, Innovation and Universities. Grant Numbers: CGL2015‐69311‐REDT, CGL2016‐80820‐R, PCIN‐2016‐168; Government of Catalonia. Grant Numbers: 2014 SGR 484, 2017 SGR 548 i DEAL
dc.format.mimetype
application/pdf
dc.language.iso
eng
dc.publisher
Wiley & Sons
dc.relation
MINECO/PE 2016-2019/CGL2016-80820-R
info:eu-repo/grantAgreement/MINECO//CGL2015-69311-REDT/ES/RED TEMATICA SOBRE PECES Y PESCA CONTINENTALES/
dc.relation.isformatof
Reproducció digital del document publicat a: https://doi.org/10.1111/gcb.15320
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Global Change Biology, 2020, vol. 26, núm. 11, p. 6383-6398
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Articles publicats (D-CCAA)
dc.rights
Attribution 4.0 International
dc.rights.uri
dc.subject
dc.title
The role of connectivity in the interplay between climate change and the spread of alien fish in a large Mediterranean river
dc.type
info:eu-repo/semantics/article
dc.rights.accessRights
info:eu-repo/semantics/openAccess
dc.type.version
info:eu-repo/semantics/publishedVersion
dc.identifier.doi
dc.contributor.funder
dc.type.peerreviewed
peer-reviewed
dc.relation.ProjectAcronym
dc.identifier.eissn
1365-2486