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A freshwater predator hit twice by the effects of warming across trophic levels

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  • Tomas Jonsson

    (Swedish University of Agricultural Sciences
    Ecological Modelling Group, Systems Biology Research Centre, Skövde University)

  • Malin Setzer

    (Ecological Modelling Group, Systems Biology Research Centre, Skövde University)

Abstract

Many ecological responses to climate change have been documented. However, due to indirect effects, some responses can be complex and difficult to predict. For example, our understanding of effects on consumers involving responses on several trophic levels is limited. Here, combining the knowledge of trophic interactions in the EU’s fourth largest lake with long-term climate and catch data, we analyse potential drivers of change in this system’s apex predator. We show that warm winters correlate with later poor catches of great Arctic charr (Salvelinus umbla), and that in recent years predator–prey cycles involving this species have disappeared. The likely mechanisms are trophic mismatches directly and indirectly affecting two stages of charr, the fry and the juveniles, respectively. Our study illustrates how a long-lived consumer may be subjected to double jeopardy from the effects of warming across trophic levels, and that a food web approach can aid in disentangling the chain of mechanisms responsible.

Suggested Citation

  • Tomas Jonsson & Malin Setzer, 2015. "A freshwater predator hit twice by the effects of warming across trophic levels," Nature Communications, Nature, vol. 6(1), pages 1-9, May.
    • Handle: RePEc:nat:natcom:v:6:y:2015:i:1:d:10.1038_ncomms6992
    DOI: 10.1038/ncomms6992
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    Cited by:

    1. Seán Kelly & Tadhg N. Moore & Elvira Eyto & Mary Dillane & Chloé Goulon & Jean Guillard & Emilien Lasne & Phil McGinnity & Russell Poole & Ian J. Winfield & R. Iestyn Woolway & Eleanor Jennings, 2020. "Warming winters threaten peripheral Arctic charr populations of Europe," Climatic Change, Springer, vol. 163(1), pages 599-618, November.
    2. R. Iestyn Woolway & Gesa A. Weyhenmeyer & Martin Schmid & Martin T. Dokulil & Elvira Eyto & Stephen C. Maberly & Linda May & Christopher J. Merchant, 2019. "Substantial increase in minimum lake surface temperatures under climate change," Climatic Change, Springer, vol. 155(1), pages 81-94, July.

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