Psidium cattleianum

Institute of Pacific Islands Forestry
Pacific Island Ecosystems at Risk
Plant threats to Pacific ecosystems

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Caring for the Land and Serving People

Welcome!  Here you will find listings and descriptions of plant species that threaten ecosytems of the Pacific islands.  Also listed are many other invasive and potentially invasive plant species present in and around the Pacific region.
Status of PIER:  As many of you have heard, our sister site, Hawaiian Ecosystems at Risk (HEAR) is no longer funded and, while it will be available on the server indefinitely, will no longer be updated.  However, this does not apply to PIER.  PIER is maintained and updated on a volunteer basis and, since I'm not paid, funding is not a problem.  Philip Thomas has agreed to post new versions to the server periodically, probably on our usual 2-3 times per year schedule.  Thus, PIER will continue to be available to provide information on invasive plants in the Pacific region.  As always, please contact me if you have species you would like to have added.
Jim Space, PIER Program Manager
  • Species lists by scientific name, common name, location, etc.
                 Direct link to all species by scientific name:  Scientific Names List
  • Risk assessments for invasive and potentially invasive species
  • Reports on invasive species on Pacific islands
  • Other publications
  • Invasive species in Hawaii: Hawaiian Ecosystems at Risk (HEAR)

    New!Recent additions to PIER:

    • 42 new risk assessments.
    • Approximately 800 new photos and drawings to assist you with identification.
    • Update of species in Micronesia from "Flora of Micronesia" online.
    • Update of the status of PIER-listed species in Pacific rim countries, courtesy of GRIN (in progress, through species A-H so far).
    • ...and more new species, locations, common names and other updates.
About the PIER project
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Information on some species may be incomplete or missing.   Contributions of information, photos, drawings, etc. are solicited and will be properly credited or cited.  Also, please look at the list of possible additional species and let us know if you think they should be added as threats to Pacific islands. 
Need more info? Have questions? Comments? Information to contribute? Contact PIER! (

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PIER website version 20130515 (posted online 06 June 2013)
This page was last updated on 12 May 2013