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Climate-driven impacts of exotic species on marine ecosystems

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DOI

  • Scott Bennett, University of Tasmania, IMEDEA (CSIC-UIB), Institut Mediterrani d'Estudis Avancats
  • ,
  • Julia Santana-Garcon, IMEDEA (CSIC-UIB), Institut Mediterrani d'Estudis Avancats
  • ,
  • Núria Marbà, IMEDEA (CSIC-UIB), Institut Mediterrani d'Estudis Avancats
  • ,
  • Gabriel Jorda, IMEDEA (CSIC-UIB), Institut Mediterrani d'Estudis Avancats, Spanish Institute of Oceanography
  • ,
  • Andrea Anton, King Abdullah University of Science and Technology (KAUST)
  • ,
  • Eugenia T. Apostolaki, Hellenic Center for Marine Research
  • ,
  • Just Cebrian, Mississippi State University
  • ,
  • Nathan R. Geraldi
  • Dorte Krause-Jensen
  • Catherine E. Lovelock, The University of Queensland
  • ,
  • Paulina Martinetto, Laboratorio de Ecologia, Instituto de Investigaciones Marinas y Costeras (IIMyC) CONICET-UNMdP, Mar de Plata, Argentina
  • ,
  • John M. Pandolfi, The University of Queensland
  • ,
  • Carlos M. Duarte, King Abdullah University of Science and Technology (KAUST)

Aim: Temperature is fundamental to the physiological and ecological performance of marine organisms, but its role in modulating the magnitude of ecological impacts by exotic species remains unresolved. Here, we examine the relationship between thermal regimes in the range of origin of marine exotic species and sites of measured impact, after human-induced introduction. We compare this relationship with the magnitude of impact exerted by exotic species on native ecosystems. Location: Global. Time period: 1977–2017 (meta-analysis). Major taxa studied: Marine exotic species. Methods: Quantitative impacts of exotic species in marine ecosystems were obtained from a global database. The native range of origin of exotic species was used to estimate the realized thermal niche for each species and compared with the latitude and climatic conditions in recipient sites of recorded impact of exotic species. The difference in median temperatures between recipient sites and the thermal range of origin (i.e., thermal midpoint anomaly) was compared with the magnitude of effect sizes by exotic species on native species, communities and ecosystems. Results: Recorded impacts occurred predominantly within the thermal niche of origin of exotic species, albeit with a tendency toward higher latitudes and slightly cooler conditions. The severity of impacts by exotic species on abundance of native taxa displayed a hump-shaped relationship with temperature. Peak impacts were recorded in recipient sites that were 2.2°C cooler than the thermal midpoint of the range of origin of exotic species, and impacts decreased in magnitude toward higher and lower thermal anomalies. Main conclusions: Our findings highlight how temperature and climatic context influence ecological impacts by exotic species in marine ecosystems and the implications for existing and novel species interactions under climate change.

Original languageEnglish
JournalGlobal Ecology and Biogeography
Volume30
Issue5
Pages (from-to)1043-1055
Number of pages13
ISSN1466-822X
DOIs
Publication statusPublished - May 2021

    Research areas

  • alien, climate change, environmental matching, invasive, non-native, temperature, BIODIVERSITY, BIOTIC RESISTANCE, LIMITS, BIOLOGICAL INVASIONS, PHYSIOLOGY, FORECASTS, RANGE SHIFTS, native, non&#8208

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