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Comparing impacts of alien plants and animals in Europe using a standard scoring system

  • Kumschick, Sabrina Department of Botany and Zoology, Centre for Invasion Biology, Stellenbosch University, Matieland, South Africa
  • Bacher, Sven Unit Ecology & Evolution, Department of Biology, University of Fribourg, Switzerland
  • Evans, Thomas Department of Life Sciences, Imperial College London, Ascot, Berkshire, UK
  • Marková, Zuzana Institute of Botany, The Czech Academy of Sciences, Průhonice, Czech Republic - Department of Ecology, Faculty of Science, Charles University in Prague, Praha 2, Czech Republic
  • Pergl, Jan Institute of Botany, The Czech Academy of Sciences, Průhonice, Czech Republic
  • Pyšek, Petr Institute of Botany, The Czech Academy of Sciences, Průhonice, Czech Republic - Department of Ecology, Faculty of Science, Charles University in Prague, Praha 2, Czech Republic
  • Vaes-Petignat, Sibylle Institute of Ecology and Evolution, University of Bern, Switzerland
  • Veer, Gabriel van der Institute of Ecology and Evolution, University of Bern, Switzerland
  • Vilà, Montserrat Estación Biológica de Doñana, Sevilla, Spain
  • Nentwig, Wolfgang Institute of Ecology and Evolution, University of Bern, Switzerland
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    01.06.2015
Published in:
  • Journal of Applied Ecology. - 2015, vol. 52, no. 3, p. 552–561
arthropod
biological invasions
environmental impact
generic impact scoring system
management prioritization
non native species
policy
risk assessment
socio economic impact
vertebrate
English Alien species can change the recipient environment in various ways, and some of them cause considerable damage. Understanding such impacts is crucial to direct management actions. This study addresses the following questions: Is it possible to quantify impact across higher taxa in a comparative manner? Do impacts differ between taxonomic groups? How are environmental and socio-economic impacts related? Can impacts be predicted based on those in other regions?To address these questions, we reviewed literature describing the impacts of 300 species from five major taxonomic groups: mammals, birds, fish, terrestrial arthropods and plants. To make very diverse impact measures comparable, we used the semi-quantitative generic impact scoring system (GISS) which describes environmental and socio-economic impacts using twelve categories. In each category, scores range from zero (no impact known or detectable) to five (the highest possible impact).Using the same scoring system for taxa as diverse as invertebrates, vertebrates and plants, we found that overall, alien mammals in Europe have the highest impact, while fish have the lowest. Terrestrial arthropods were found to have the lowest environmental impact, while fish had relatively low socio-economic impact.Overall, the magnitude of environmental and socio-economic impacts of individual alien species is highly correlated. However, at the species level, major deviations are found.For mammals and birds, the impacts in invaded ranges outside of Europe are broadly similar to those recorded for alien species within Europe, indicating that a consideration of the known impacts of a species in other regions can be generally useful when predicting the impacts of an alien species. However, it should be noted that this pattern is not consistent across all mammal and bird orders, and thus, such information should be considered with caution.Synthesis and applications. Comparing the impacts of alien species across taxa is necessary for prioritizing management efforts and effective allocation of resources. By applying the generic impact scoring system (GISS) to five major taxonomic groups, we provide the basis for a semi-quantitative cross-taxa listing process (e.g. ‘black lists’ or 100-worst-lists). If more data are collated from different geographical regions and habitats using standard GISS protocols, risk assessments for alien species based on rigorous measures of impact could be improved by taking into account local variation, and context dependence of impacts. This would also allow studies at lower taxonomic levels, and within-taxon analyses of functional groups and guilds.
Faculty
Faculté des sciences et de médecine
Department
Département de Biologie
Language
  • English
Classification
Ecology and biodeversity
License
License undefined
Identifiers
Persistent URL
https://folia.unifr.ch/unifr/documents/304408
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