Global Tree Assessment


Malin Rivers

Head of Conservation Prioritisation

Malin, along with the IUCN/SSC Global Tree Specialist Group, is coordinating work towards the Global Tree Assessment.

Emily Beech

Conservation Officer

Emily works on assessments towards the Global Tree Assessment and supports partners.

Megan Barstow

Conservation Officer

Megan works on global assessments of timber species, is involved in taxonomic red list assessments and provides support to GTA partners.

Yvette Harvey-Brown

Conservation Officer

Yvette leads the assessment of tree species via our Least Concern Workflow and is involved with other tree assessment activities.

Katharine Davies

Tree Red List Coordinator

Katharine is seconded at the IUCN Red List Unit in Cambridge where she works on reviewing and publishing tree red list assessments for the IUCN Red List.

Ryan Hills

GTA Conservation Assistant

Ryan works on global assessments for timber species and supports updates to ThreatSearch and other red listing activities.


Sara Oldfield - Co-chair of the Global Tree Specialist Group (GTSG)

Adrian Newton - Co-chair of the Global Tree Specialist Group (GTSG)

The IUCN/SSC Global Tree Specialist Group (GTSG) is a global network of experts who, working in their own regions and institutions, all contribute to the conservation of globally threatened trees.

More information about GTSG and the members.

 Click here to contact the team.





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



Learn more about the goals of the Global Tree Assessment and why it is needed


Support us

Support the Global Tree Assessment to help give all trees a conservation assessment