Climate and productivity shape fish and invertebrate community structure in subarctic lakes

Brian Hayden, Jukka-Pekka Myllykangas, Rob ROLLS, Kimmo Kahilainen

    Research output: Contribution to journalArticle

    12 Citations (Scopus)

    Abstract

    * Climate change and land-use intensification are increasing productivity in subarctic lakes. Simultaneously, fish and invertebrate species adapted to temperate conditions are expanding their range northwards into subarctic habitats. Community level studies are required to predict long-term effects of these dual stressors on subarctic freshwater ecosystems. * We conducted a space-for-time study examining the fish, benthic invertebrate and pelagic zooplankton communities in littoral, profundal and pelagic habitats in 19 subarctic lakes situated on a temperature, land-use and productivity gradient in northern Europe. * Fish density (ranging between 0.5 and 150.5 fish per net series h−1) and biomass (range between 92 and 5,147 g per net series h−1) increased significantly with increasing lake temperature and productivity. This was associated with significantly decreasing body size (26 to 12 cm total length; 174 to 19 g body mass) and a shift in fish community structure from salmonid (Arctic charr Salvelinus alpinus, whitefish Coregonus lavaretus), to percid (ruffe Gymnocephalus cernua, perch Perca fluviatilis) and ultimately cyprinid (roach Rutilus rutilus, bleak Alburnus alburnus) dominance. Changes in fish community composition were most apparent in littoral and pelagic zones. * Benthic macroinvertebrate density peaked in mesotrophic lakes, zooplankton density was highest at either end of the gradient, indicating habitat specific differences in predation pressure and top-down control. Body size of zooplankton and benthic macroinvertebrates was negatively related to temperature and productivity. * These results suggest that climate change and intensification of land-use practices are gradually turning subarctic lakes into warmer, less transparent and more productive systems harbouring abundant, small-sized and warmer adapted communities.
    Original languageEnglish
    Pages (from-to)990-1003
    Number of pages14
    JournalFreshwater Biology
    Volume62
    Issue number6
    DOIs
    Publication statusPublished - 2017

    Fingerprint

    community structure
    invertebrate
    invertebrates
    climate
    lakes
    productivity
    lake
    fish
    zooplankton
    Rutilus rutilus
    Salvelinus alpinus
    land use
    macroinvertebrates
    macroinvertebrate
    body size
    habitats
    climate change
    Alburnus alburnus
    Gymnocephalus cernua
    habitat

    Cite this

    Hayden, Brian ; Myllykangas, Jukka-Pekka ; ROLLS, Rob ; Kahilainen, Kimmo. / Climate and productivity shape fish and invertebrate community structure in subarctic lakes. In: Freshwater Biology. 2017 ; Vol. 62, No. 6. pp. 990-1003.
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    abstract = "* Climate change and land-use intensification are increasing productivity in subarctic lakes. Simultaneously, fish and invertebrate species adapted to temperate conditions are expanding their range northwards into subarctic habitats. Community level studies are required to predict long-term effects of these dual stressors on subarctic freshwater ecosystems. * We conducted a space-for-time study examining the fish, benthic invertebrate and pelagic zooplankton communities in littoral, profundal and pelagic habitats in 19 subarctic lakes situated on a temperature, land-use and productivity gradient in northern Europe. * Fish density (ranging between 0.5 and 150.5 fish per net series h−1) and biomass (range between 92 and 5,147 g per net series h−1) increased significantly with increasing lake temperature and productivity. This was associated with significantly decreasing body size (26 to 12 cm total length; 174 to 19 g body mass) and a shift in fish community structure from salmonid (Arctic charr Salvelinus alpinus, whitefish Coregonus lavaretus), to percid (ruffe Gymnocephalus cernua, perch Perca fluviatilis) and ultimately cyprinid (roach Rutilus rutilus, bleak Alburnus alburnus) dominance. Changes in fish community composition were most apparent in littoral and pelagic zones. * Benthic macroinvertebrate density peaked in mesotrophic lakes, zooplankton density was highest at either end of the gradient, indicating habitat specific differences in predation pressure and top-down control. Body size of zooplankton and benthic macroinvertebrates was negatively related to temperature and productivity. * These results suggest that climate change and intensification of land-use practices are gradually turning subarctic lakes into warmer, less transparent and more productive systems harbouring abundant, small-sized and warmer adapted communities.",
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    Hayden, B, Myllykangas, J-P, ROLLS, R & Kahilainen, K 2017, 'Climate and productivity shape fish and invertebrate community structure in subarctic lakes', Freshwater Biology, vol. 62, no. 6, pp. 990-1003. https://doi.org/10.1111/fwb.12919

    Climate and productivity shape fish and invertebrate community structure in subarctic lakes. / Hayden, Brian; Myllykangas, Jukka-Pekka; ROLLS, Rob; Kahilainen, Kimmo.

    In: Freshwater Biology, Vol. 62, No. 6, 2017, p. 990-1003.

    Research output: Contribution to journalArticle

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    AB - * Climate change and land-use intensification are increasing productivity in subarctic lakes. Simultaneously, fish and invertebrate species adapted to temperate conditions are expanding their range northwards into subarctic habitats. Community level studies are required to predict long-term effects of these dual stressors on subarctic freshwater ecosystems. * We conducted a space-for-time study examining the fish, benthic invertebrate and pelagic zooplankton communities in littoral, profundal and pelagic habitats in 19 subarctic lakes situated on a temperature, land-use and productivity gradient in northern Europe. * Fish density (ranging between 0.5 and 150.5 fish per net series h−1) and biomass (range between 92 and 5,147 g per net series h−1) increased significantly with increasing lake temperature and productivity. This was associated with significantly decreasing body size (26 to 12 cm total length; 174 to 19 g body mass) and a shift in fish community structure from salmonid (Arctic charr Salvelinus alpinus, whitefish Coregonus lavaretus), to percid (ruffe Gymnocephalus cernua, perch Perca fluviatilis) and ultimately cyprinid (roach Rutilus rutilus, bleak Alburnus alburnus) dominance. Changes in fish community composition were most apparent in littoral and pelagic zones. * Benthic macroinvertebrate density peaked in mesotrophic lakes, zooplankton density was highest at either end of the gradient, indicating habitat specific differences in predation pressure and top-down control. Body size of zooplankton and benthic macroinvertebrates was negatively related to temperature and productivity. * These results suggest that climate change and intensification of land-use practices are gradually turning subarctic lakes into warmer, less transparent and more productive systems harbouring abundant, small-sized and warmer adapted communities.

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