Ethnobotany of Indigenous Peoples, particularly in northwestern North America
Traditional Ecological Knowledge
Traditional Land and Resource Management Systems Environmental Studies and Education
Forestry Issues
Economic Botany
Biodiversity
Traditional Food Plants and Nutrition
Toxic Plants; Traditional Herbal Medicines and Pharmacology
Folk Classification
Ethnoarchaeology
New Crop Development
Traditional Technologies and Plant Materials Plants in Traditional Narrative and Ceremony and Ritual
Interdisciplinary Research
Much of my work is interdisciplinary in nature, particularly between Environmental Studies, Geography, Biology, Archaeology, Law and Health Sciences.
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