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The foraging behaviour of consumers leads to more extinctions when temperature increases

When the temperature increases, so do the energetic requirements of species. We find that the energetic stress caused by increases in temperature pushes fish species to consume the first prey they encounter to fulfil their immediate needs, rather than focusing on more energetically rewarding prey. This behaviour increases the vulnerability of communities to climate change.

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Fig. 1: Effect of temperature on the prey body mass selectivity of fish and on species coexistence in communities.

References

  1. Dill, L. M. Adaptive flexibility in the foraging behavior of fishes. Can. J. Fish. Aquat. Sci. 40, 398–408 (1983). A review article that presents how different fish species adapt their diet to local environmental conditions.

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  2. Kondoh, M. Foraging adaptation and the relationship between food-web complexity and stability. Science 299, 1388–1391 (2003). A research article suggesting that the adaptation of consumers’ foraging behaviour can be a key factor explaining the high level of biodiversity observed in ecosystems.

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  3. Gauzens, B. et al. Quantitative description of six fish species’ gut contents and prey abundances in the Baltic Sea (1968–1978). Sci. Data 11, 236 (2024). This paper compiles the data from the fishing campaigns led by Arntz.

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This is a summary of: Gauzens, B. et al. Flexible foraging behaviour increases predator vulnerability to climate change. Nat. Clim. Change https://doi.org/10.1038/s41558-024-01946-y (2024).

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The foraging behaviour of consumers leads to more extinctions when temperature increases. Nat. Clim. Chang. 14, 320–321 (2024). https://doi.org/10.1038/s41558-024-01969-5

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