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 Secretariat of the Pacific Regional Environment Programme

The PIER database is focused on plant species that are known to have been introduced to the Pacific region including the Pacific Rim. It provides listings and descriptions of plant species that threaten ecosystems and also listed many other invasive and potentially invasive plant species present in and around the Pacific region

 Niue Department of Environment

Report to the Government of Niue and the United Nations Development Programme
Invasive Plant Species on Niue following Cyclone Heta by James C. Space, Barbara M. Waterhouse, Melanie Newfield and Cate Bull 2004