
Global Tree Specialist Group Members
The IUCN/SSC Global Tree Specialist Group (GTSG) has over 140 expert members from botanic gardens, herbaria, universities and both governmental and non-governmental organisations. Find out more about the specialists who help to inform the conservation work we carry out.


Prof. Peter Ashton
Arnold Arboretum, Harvard University, USA

Dr. Nanjappa Ashwath
Central Queensland University, Australia

Harry Baldwin

Patricia Barberá
Taxonomy and systematics of African Euphorbiaceae, Phyllanthaceae, and Putranjivaceae; plant conservation
Missouri Botanical Garden, Africa and Madagascar Department




Dr. Jedediah Brodie
University of Montana, USA

David Burslem
Diversity, conservation & restoration of tropical forest ecosystems, particular focus on lowland dipterocarp forests in SE Asia
University of Aberdeen, UK

Dr. James W. Byng
Tropical trees, especially Syzygium (Myrtaceae)
Plant Gateway, Naturalis Biodiversity Center

Sudipto Chatterjee
Biodiversity assessment & conservation planning
Conservation Sciences India