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A global indicator for biological invasion.

Melodie A McGeoch1, Steven L Chown, Jesse M Kalwij

  • 1Centre for Invasion Biology, Department of Conservation Ecology and Entomology, University of Stellenbosch, Private Bay X1, Matieland 7602, South Africa. mcgeoch@sun.ac.za

Conservation Biology : the Journal of the Society for Conservation Biology
|December 22, 2006
PubMed
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Developing a global indicator for invasive alien species (IAS) is crucial for monitoring biodiversity loss. This study proposes a flexible indicator combining IAS numbers and management plans to track progress toward conservation targets.

Area of Science:

  • Ecology
  • Conservation Biology
  • Environmental Science

Background:

  • Invasive alien species (IAS) are a major threat to biodiversity, impacting ecosystems globally.
  • Existing indicators for IAS lack standardization across regions and species groups.
  • The Convention on Biological Diversity (CBD) requires an IAS indicator for its 2010 biodiversity target.

Purpose of the Study:

  • To propose a rationale and characteristics for a robust IAS trends indicator.
  • To develop flexible, disaggregated indicators using existing data.
  • To meet the CBD's 2010 framework goal for monitoring IAS.

Main Methods:

  • Suggesting single and composite indicators for IAS trends.
  • Including problem-status and management-status measures.

Related Experiment Videos

  • Proposing national and global scales for indicator assessment.

    • Main Results:

    • Identified number of IAS and operational management plans as key single indicators.
    • Defined global trends based on national progress in stabilizing IAS numbers and implementing management plans.
    • Proposed a minimum information set for a global IAS indicator.

    Conclusions:

    • The proposed indicator offers a flexible and data-driven approach to monitoring IAS trends.
    • Further testing is needed to assess the indicator's accuracy, sensitivity, and tractability.
    • This initiative will support long-term global monitoring of biological invasions beyond 2010.