Population niche breadth and individual trophic specialisation of fish along a climate-productivity gradient

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dc.contributor.author Sanchez-Hernandez, Javier
dc.contributor.author Hayden, Brian
dc.contributor.author Harrod, Chris
dc.contributor.author Kahilainen, Kimmo K.
dc.date.accessioned 2021-10-28T07:26:02Z
dc.date.available 2021-10-28T07:26:02Z
dc.date.issued 2021-10-13
dc.identifier.citation Sanchez-Hernandez , J , Hayden , B , Harrod , C & Kahilainen , K K 2021 , ' Population niche breadth and individual trophic specialisation of fish along a climate-productivity gradient ' , Reviews in Fish Biology and Fisheries , vol. 31 , pp. 1025–1043 . https://doi.org/10.1007/s11160-021-09687-3
dc.identifier.other PURE: 169849961
dc.identifier.other PURE UUID: 3b73fcde-8ab8-4200-b44e-1c43223b6dc9
dc.identifier.other WOS: 000706903000001
dc.identifier.other ORCID: /0000-0002-1539-014X/work/102234910
dc.identifier.uri http://hdl.handle.net/10138/335773
dc.description.abstract A mechanistic understanding of how environmental change affects trophic ecology of fish at the individual and population level remains elusive. To address this, we conducted a space-for-time approach incorporating environmental gradients (temperature, precipitation and nutrients), lake morphometry (visibility, depth and area), fish communities (richness, competition and predation), prey availability (richness and density) and feeding (population niche breadth and individual trophic specialisation) for 15 native fish taxa belonging to different thermal guilds from 35 subarctic lakes along a marked climate-productivity gradient corresponding to future climate change predictions. We revealed significant and contrasting responses from two generalist species that are abundant and widely distributed in the region. The cold-water adapted European whitefish (Coregonus lavaretus) reduced individual specialisation in warmer and more productive lakes. Conversely, the cool-water adapted Eurasian perch (Perca fluviatilis) showed increased levels of individual specialism along climate-productivity gradient. Although whitefish and perch differed in the way they consumed prey along the climate-productivity gradient, they both switched from consumption of zooplankton in cooler, less productive lakes, to macrozoobenthos in warmer, more productive lakes. Species with specialist benthic or pelagic feeding did not show significant changes in trophic ecology along the gradient. We conclude that generalist consumers, such as warmer adapted perch, have clear advantages over colder and clear-water specialised species or morphs through their capacity to undergo reciprocal benthic-pelagic switches in feeding associated with environmental change. The capacity to show trophic flexibility in warmer and more productive lakes is likely a key trait for species dominance in future communities of high latitudes under climate change. en
dc.format.extent 19
dc.language.iso eng
dc.relation.ispartof Reviews in Fish Biology and Fisheries
dc.rights cc_by
dc.rights.uri info:eu-repo/semantics/openAccess
dc.subject Environmental change
dc.subject Fish
dc.subject Multichannel feeding
dc.subject Stomach content analysis
dc.subject Thermal guild
dc.subject Subarctic lakes
dc.subject LONG-TERM
dc.subject BROWN TROUT
dc.subject PERCH PERCA
dc.subject WATER
dc.subject TEMPERATURE
dc.subject DYNAMICS
dc.subject SPECIATION
dc.subject IMPACTS
dc.subject 1181 Ecology, evolutionary biology
dc.title Population niche breadth and individual trophic specialisation of fish along a climate-productivity gradient en
dc.type Article
dc.contributor.organization Biological stations
dc.contributor.organization Lammi Biological Station
dc.description.reviewstatus Peer reviewed
dc.relation.doi https://doi.org/10.1007/s11160-021-09687-3
dc.relation.issn 0960-3166
dc.rights.accesslevel openAccess
dc.type.version publishedVersion

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