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Global ecological impacts of marine exotic species

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  • Andrea Anton, King Abdullah University of Science and Technology, Saudi-Arabien
  • N. R. Geraldi, King Abdullah University of Science and Technology
  • ,
  • C. E. Lovelock, The University of Queensland, Australien
  • Eugenia T. Apostolaki, Hellenic Centre for Marine Research, Grækenland
  • Scott Bennett, Global Change Research Group, Institut Mediterrani d’Estudis Avançats (IMEDEA), CSIC-UIB, Esporles, Spain
  • ,
  • Just Cebrián, Dauphin Island Sea Laboratory, University of South Alabama, Mississippi State University
  • ,
  • Dorte Krause-Jensen
  • Núria Marbà, IMEDEA (CSIC-UIB), Institut Mediterrani d'Estudis Avancats, Spanien
  • Paulina Martinetto, Laboratorio de Ecologia, Instituto de Investigaciones Marinas y Costeras (IIMyC) CONICET-UNMdP, Mar de Plata, Argentina, Argentina
  • John M. Pandolfi, The University of Queensland, Australien
  • Julia Santana-Garcon, Global Change Research Group, Institut Mediterrani d’Estudis Avançats (IMEDEA), CSIC-UIB, Esporles, Spain, Spanien
  • Carlos M. Duarte, King Abdullah University of Science and Technology, Saudi-Arabien

Exotic species are a growing global ecological threat; however, their overall effects are insufficiently understood. While some exotic species are implicated in many species extinctions, others can provide benefits to the recipient communities. Here, we performed a meta-analysis to quantify and synthesize the ecological effects of 76 exotic marine species (about 6% of the listed exotics) on ten variables in marine communities. These species caused an overall significant, but modest in magnitude (as indicated by a mean effect size of g < 0.2), decrease in ecological variables. Marine primary producers and predators were the most disruptive trophic groups of the exotic species. Approximately 10% (that is, 2 out of 19) of the exotic species assessed in at least three independent studies had significant impacts on native species. Separating the innocuous from the disruptive exotic species provides a basis for triage efforts to control the marine exotic species that have the most impact, thereby helping to meet Aichi Biodiversity Target 9 of the Convention on Biological Diversity.

OriginalsprogEngelsk
TidsskriftNature Ecology & Evolution
Vol/bind3
Nummer5
Sider (fra-til)787-800
Antal sider14
DOI
StatusUdgivet - maj 2019

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