Global Tree Assessment

Who is involved

The Global Tree Assessment is managed and coordinated by Botanic Gardens Conservation International (BGCI) working with the IUCN Species Survival Commission’s Global Tree Specialist Group (GTSG). The GTSG has over 80 tree experts from countries all around the world who are contributing information and carrying out species assessments.


Partners and contributors

Various organisations which contribute to the overall goals of the Global Tree Assessment are assessing tree species independently for submission to IUCN. BGCI and GTSG are directly facilitating other organisations to submit IUCN Red List assessments for trees. Partners include:

  • Fauna & Flora International (FFI) is a lead partner with BGCI in the Global Trees Campaign and has been involved in tree red listing initiatives since the Campaign was initiated by FFI in 1999.
  • Bournemouth University has contributed significantly to the development of the Global Tree Assessment, led by Professor Adrian Newton, School of Applied Sciences and co-chair of the Global Tree Specialist Group.
  • Centro Nacional de Conservação da Flora is the GTA partner in Brazil and is currently assessing endemic trees as part of its commitment to the Assessment and Target 2 of the GSPC.
  • Forest Research Institute of Malaysia contributes in depth assessments on Malaysian tree species and expert knowledge to guide the GTA.
  • Missouri Botanical Garden provides extensive botanical expertise and IUCN Red Listing experience for the Assessment with a current focus on ebonies, Madagascan trees and trees of East Africa.
  • The Morton Arboretum has a major role in assessing the world's oak species for the GTA and coordinating North American tree conservation assessments.
  • Royal Botanic Gardens, Kew is a Red List Partner together with BGCI and a major contributor to global plant red listing in general through the development of tools, techniques, provision of botanical expertise and training.
  • National Autonomous University of Mexico (UNAM) is a GTA partner in Mexico working with botanists at INECOL and elsewhere on assessments of the endemic and near endemic trees of the country.


The GTA would not be possible without support and input of the partners listed above and contributions from many other experts and institutions including the following which will be highlighted as the Assessment progresses.

  • Australian Threatened Species Scientific Committee
  • Australian National Botanic Gardens
  • Bogor Botanical Garden
  • Cardiff University
  • Central African Plant Red List Authority
  • Chinese Plant Specialist Group
  • Crop Wild Relative Specialist Group
  • Cuban Plant Specialist Group
  • East African Plant Red List Authority
  • Galapagos Plant Specialist Group
  • Hawaiian Plants Specialist Group
  • Humboldt Institute
  • Korean Plant Specialist Group
  • Lembaga Ilmu Pengetahuan Indonesia (Indonesian Institute of Sciences)
  • Madagascar Plant Specialist Group
  • Mascarene Islands Plant Specialist Group
  • NatureServe
  • New Caledonia Plant Red List Authority
  • Smithsonian Institute
  • South African National Biodiversity Institute
  • Temperate South American Plants Specialist Group
  • United States Botanic Garden
  • United States Department of Agriculture Forest Service 
  • University of Maastricht
  • University of Malaysia 
  • Westonbirt Arboretum


  • Critical Ecosystem Partnership Fund
  • European Commission
  • Fondation Franklinia
  • IUCN
  • Toyota Foundation
  • Mohamed bin Zayed Species Conservation Fund
  • Rufford Foundation
  • Japanese Biodiversity Trust
  • Keidanren Nature Conservation Fund




Find out more about the progress we are making towards the Global Tree Assessment


How to join

Find out more about how to get involved in the Global Tree Assessment



Explore the regions and plant groups that are in need of your help