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Threats to Biodiversity01:50

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Biological invasions negatively impact global protected areas.

Laís Carneiro1, Natali O R Miiller1, Ross N Cuthbert2

  • 1Laboratório de Ecologia e Conservação, Departamento de Engenharia Ambiental, Universidade Federal do Paraná, Brazil; Programa de Pós-graduação em Ecologia e Conservação, Universidade Federal do Paraná, Brazil.

The Science of the Total Environment
|July 17, 2024
PubMed
Summary

Biological invasions negatively impact protected areas globally, threatening biodiversity and ecosystem health. Current conservation efforts are insufficient to manage these invasive species and meet sustainability goals.

Keywords:
BiodiversityConservationEcological impactsGlobal analysisInvasive speciesMeta-analysis

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Area of Science:

  • Ecology
  • Conservation Biology
  • Environmental Science

Background:

  • Protected areas are crucial for global biodiversity conservation and sustainability.
  • Biological invasions pose a significant and growing threat to the ecological integrity and conservation value of these areas.
  • Limited data on the impacts of invasive species hinders effective management decisions within protected areas.

Purpose of the Study:

  • To conduct the first quantitative analysis of the global impacts of biological invasions within protected areas.
  • To assess the effects of invasive species on biotic and abiotic characteristics across different scales (population, community, ecosystem).
  • To evaluate the sufficiency of current management efforts in mitigating invasion impacts.

Main Methods:

  • Collated data on 300 reported effects from 44 invasive species impacting protected areas worldwide.
  • Analyzed impacts across population, community, and ecosystem levels.
  • Examined geographical distribution of studies, noting a focus on National Parks and World Heritage Sites in the Nearctic and Neotropical regions.

Main Results:

  • Biological invasions have predominantly negative impacts on both biotic and abiotic features of protected areas globally.
  • These negative impacts are widespread across all ecological scales and affect the majority of studied invasive taxa.
  • Despite context-dependencies, the pervasive negative effects highlight insufficient current management strategies.

Conclusions:

  • Existing conservation efforts are inadequate to control invasive species and achieve biodiversity and sustainability targets.
  • Prioritizing research on ecological interactions, establishing robust monitoring and prevention programs, and increasing global awareness are essential.
  • Addressing the risks posed by biological invasions is imperative for the long-term success of protected areas.