4.5 Article

Global ecological impacts of marine exotic species

期刊

NATURE ECOLOGY & EVOLUTION
卷 3, 期 5, 页码 787-800

出版社

NATURE PORTFOLIO
DOI: 10.1038/s41559-019-0851-0

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资金

  1. King Abdullah University of Science and Technology (KAUST)
  2. Horizon 2020 Framework Programme (EU Framework Programme for Research and Innovation H2020) [659246]
  3. Ministry of Economy and Competitiveness, Agencia Estatal de Investigacion (Spanish Agencia Estatal de Investigacion) [FJCI - 2016 - 30728, CGL 2015 - 71809 - P]
  4. ARC Centre of Excellence for Coral Reef Studies [CE 140100020]

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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.

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