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    Author(s): Franz Essl; Bernd Lenzner; Sven Bacher; Sarah Bailey; Cesar Capinha; Curtis Daehler; Stefan Dullinger; Piero Genovesi; Cang Hui; Philip E. Hulme; Jonathan M. Jeschke; Stelios Katsanevakis; Ingolf Kühn; Brian Leung; Andrew Liebhold; Chunlong Liu; Hugh J. MacIsaac; Laura A. Meyerson; Martin A. Nuñez; Aníbal Pauchard; Petr Pyšek; Wolfgang Rabitsch; David M. Richardson; Helen E. Roy; Gregory M. Ruiz; James C. Russell; Nathan J. Sanders; Dov F. Sax; Riccardo Scalera; Hanno Seebens; Michael Springborn; Anna Turbelin; Mark Kleunen; Betsy Holle; Marten Winter; Rafael D. Zenni; Brady J. Mattsson; Nuria Roura‐Pascual
    Date: 2020
    Source: Global Change Biology
    Publication Series: Scientific Journal (JRNL)
    Station: Northern Research Station
    PDF: Download Publication  (1.0 MB)

    Description

    Understanding the likely future impacts of biological invasions is crucial yet highly challenging given the multiple relevant environmental, socio-economic and societal contexts and drivers. In the absence of quantitative models, methods based on expert knowledge are the best option for assessing future invasion trajectories. Here, we present an expert assessment of the drivers of potential alien species impacts under contrasting scenarios and socioecological contexts through the mid-21st century. Based on responses from 36 experts in biological invasions, moderate (20%–30%) increases in invasions, compared to the current conditions, are expected to cause major impacts on biodiversity in most socioecological contexts. Three main drivers of biological invasions—transport, climate change and socio-economic change—were predicted to significantly affect future impacts of alien species on biodiversity even under a bestcase scenario. Other drivers (e.g. human demography and migration in tropical and subtropical regions) were also of high importance in specific global contexts (e.g. for individual taxonomic groups or biomes). We show that some best-case scenarios can substantially reduce potential future impacts of biological invasions. However, rapid and comprehensive actions are necessary to use this potential and achieve the goals of the Post-2020 Framework of the Convention on Biological Diversity.

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    Citation

    Essl, Franz; Lenzner, Bernd; Bacher, Sven; Bailey, Sarah; Capinha, Cesar; Daehler, Curtis; Dullinger, Stefan; Genovesi, Piero; Hui, Cang; Hulme, Philip E.; Jeschke, Jonathan M.; Katsanevakis, Stelios; Kühn, Ingolf; Leung, Brian; Liebhold, Andrew; Liu, Chunlong; MacIsaac, Hugh J.; Meyerson, Laura A.; Nuñez, Martin A.; Pauchard, Aníbal; Pyšek, Petr; Rabitsch, Wolfgang; Richardson, David M.; Roy, Helen E.; Ruiz, Gregory M.; Russell, James C.; Sanders, Nathan J.; Sax, Dov F.; Scalera, Riccardo; Seebens, Hanno; Springborn, Michael; Turbelin, Anna; Kleunen, Mark; Holle, Betsy; Winter, Marten; Zenni, Rafael D.; Mattsson, Brady J.; Roura‐Pascual, Nuria. 2020. Drivers of future alien species impacts: An expert‐based assessment. Global Change Biology. 26(9): 4880-4893. https://doi.org/10.1111/gcb.15199.

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    Keywords

    biological invasions, expert survey, globalization, impacts, management, policy, scenarios, uncertainties

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https://www.fs.usda.gov/treesearch/pubs/60742