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Green plants in the red: a baseline global assessment for the IUCN Sampled Red List Index for Plants

Research output: Contribution to journalArticle

Author(s)

Neil Brummitt, Steven Bachman, Janine Griffiths-Lee, Maiko Lutz, Justin Moat, Aljos Farjon, John Donaldson, Craig Hilton-Taylor, Thomas Robert Meagher, Sara Albuquerque, Elina Aletrari, A. Kei Andrews, Guy Atchison, Elisabeth Baloch, Barbara Barlozzini, Alice Brunazzi, Julia Carretero, Marco Celesti, Helen Chadburn, Eduardo Ciafoni & 26 others Chris Cockel, Vanessa Coldwell, Benedetta Concetti, Sara Contu, Vicki Crook, Philippa Dyson, Lauren Gardiner, Nadia Ghanim, Hannah Greene, Alice Groom, Ruth Harker, Della Hopkins, Sonia Khela, Poppy Lakeman-Fraser, Heather Lindon, Helen Lockwood, Christine Loftu, Debora Lombrici, Lucia Lopez-Poveda, James Lyon, Patricia Malcolm-Tompkins, Kirsty McGregor, Laura Moreno, Linda Murray, Keara Nazar, Eimear Nic Lughadha

School/Research organisations

Abstract

Plants provide fundamental support systems for life on Earth and are the basis for all terrestrial ecosystems; a decline in plant diversity will be detrimental to all other groups of organisms including humans. Decline in plant diversity has been hard to quantify, due to the huge numbers of known and yet to be discovered species and the lack of an adequate baseline assessment of extinction risk against which to track changes. The biodiversity of many remote parts of the world remains poorly known, and the rate of new assessments of extinction risk for individual plant species approximates the rate at which new plant species are described. Thus the question 'How threatened are plants?'
is still very difficult to answer accurately. While completing assessments for each
species of plant remains a distant prospect, by assessing a randomly selected sample of species the Sampled Red List Index for Plants gives, for the first time, an accurate view of how threatened plants are across the world. It represents the first key phase of ongoing efforts to monitor the status of the world's plants. More than 20% of plant species assessed are threatened with extinction, and the habitat with the most threatened species is overwhelmingly tropical rain forest, where the greatest threat to plants is anthropogenic habitat conversion, for arable and livestock agriculture, and harvesting of natural resources. Gymnosperms (e.g. conifers and cycads) are the most threatened group, while a third of plant species included in this study have yet to receive an assessment or are so poorly known that we cannot yet ascertain whether they are threatened or not. This study provides a baseline assessment from which trends in the status of plant biodiversity can be measured and periodically reassessed.
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Details

Original languageEnglish
Article numbere0135152
Number of pages22
JournalPLoS One
Volume10
Issue number8
DOIs
Publication statusPublished - 7 Aug 2015

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ID: 207955920