Specialist in the anatomy and function of wood, forensic wood science, and forensic botany
- Botanical wood anatomy - the evolution of wood anatomical diversity in the context of phylogeny and function
- Biocentric wood science - the biological basis and ultimate origin of wood properties
- Forensic wood science, especially to combat illegal logging - the application of basic forensic research to practical, real-world problems in international trade in forest products
- Forensic botany - the application of botany writ large to socially relevant issues of criminal and civil law, and how science can inform legislation.
- Scientific Member of the United Nations Office of Drugs and Crime Expert Group Meeting on Timber Forensics, Vienna, Austria 2014
- Winner of a 2017 Forest Stewardship Council Leadership Award
- Deputy Executive Secretary of the International Association of Wood Anatomists, and Chair of the WRAITH Task Force (Wood Research Against Illegal Timber Harvest)