Alien species in a warmer world: risks and opportunities

Gian Reto Walther, Alain Roques, Philip E. Hulme, Martin T. Sykes, Petr Pyšek, Ingolf Kühn, Martin Zobel, Sven Bacher, Zoltán Botta-Dukát, Harald Bugmann, Bálint Czúcz, Jens Dauber, Thomas Hickler, Vojtěch Jarošík, Marc Kenis, Stefan Klotz, Dan Minchin, Mari Moora, Wolfgang Nentwig, Jürgen OttVadim E. Panov, Björn Reineking, Christelle Robinet, Vitaliy Semenchenko, Wojciech Solarz, Wilfried Thuiller, Montserrat Vilà, Katrin Vohland, Josef Settele

Research output: Contribution to journalReview article

698 Citations (Scopus)


Climate change and biological invasions are key processes affecting global biodiversity, yet their effects have usually been considered separately. Here, we emphasise that global warming has enabled alien species to expand into regions in which they previously could not survive and reproduce. Based on a review of climate-mediated biological invasions of plants, invertebrates, fishes and birds, we discuss the ways in which climate change influences biological invasions. We emphasise the role of alien species in a more dynamic context of shifting species' ranges and changing communities. Under these circumstances, management practices regarding the occurrence of 'new' species could range from complete eradication to tolerance and even consideration of the 'new' species as an enrichment of local biodiversity and key elements to maintain ecosystem services.

Original languageEnglish
Pages (from-to)686-693
Number of pages8
JournalTrends in Ecology and Evolution
Issue number12
Publication statusPublished - Dec 1 2009


ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics

Cite this

Walther, G. R., Roques, A., Hulme, P. E., Sykes, M. T., Pyšek, P., Kühn, I., Zobel, M., Bacher, S., Botta-Dukát, Z., Bugmann, H., Czúcz, B., Dauber, J., Hickler, T., Jarošík, V., Kenis, M., Klotz, S., Minchin, D., Moora, M., Nentwig, W., ... Settele, J. (2009). Alien species in a warmer world: risks and opportunities. Trends in Ecology and Evolution, 24(12), 686-693.