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Smaller climatic niche shifts in invasive than non-invasive alien ant species

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  • Olivia K. Bates

    (University of Lausanne)

  • Sébastien Ollier

    (Université Paris-Saclay, CNRS, AgroParisTech, Ecologie Systématique Evolution)

  • Cleo Bertelsmeier

    (University of Lausanne)

Abstract

The globalization of trade and human movement has resulted in the accidental dispersal of thousands of alien species worldwide at an unprecedented scale. Some of these species are considered invasive because of their extensive spatial spread or negative impacts on native biodiversity. Explaining which alien species become invasive is a major challenge of invasion biology, and it is often assumed that invasiveness is linked to a greater ability to establish in novel climates. To test whether invasive species have expanded more into novel climates than non-invasive alien species, we quantified niche shifts of 82 ant species. Surprisingly, invasive species showed smaller niche shifts than non-invasive alien species. Independent of their invasiveness, the species with the smallest native niches and range sizes, experienced the greatest niche shifts. Overall, our results challenge the assumption that invasive species are particularly good pioneers of novel climates.

Suggested Citation

  • Olivia K. Bates & Sébastien Ollier & Cleo Bertelsmeier, 2020. "Smaller climatic niche shifts in invasive than non-invasive alien ant species," Nature Communications, Nature, vol. 11(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-19031-1
    DOI: 10.1038/s41467-020-19031-1
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