Educators

of Dunster & Associates Environmental Consultants Ltd. is the primary author for the new Tree Risk Assessment Qualification (TRAQ) Manual & the originator of Tree Risk Assessment Course & Exam (TRACE) which preceded the new ISA Qualification. Dunster is also a Registered Consulting Arborist […]

(Ph.D.) PROFESSOR Chubu University, (Aichi, Japan) FOUNDER of “Tree Climbing Japan”. Gathright was raised in Victoria BC Canada by a family of Scottish decent and tradition, and first came to Japan in 1985 for a brief stay that turned into a life and love […]

Jörg Wohn is a landscape engineer who is specialized in tree cabling and the traffic safety of trees. Since 2004 he is working for pbs Baumsicherungsprodukte GmbH in Stuttgart (Germany) the home of the cobra tree cabling system. He is responsible for the product […]