Professor, Environmental Conservation
Dr. H. Dennis P. Ryan is an Arborist and the Program Coordinator of the Arboriculture/Urban Forestry Program at the University of Massachusetts , Amherst . Prior to joining the faculty at the University, Dr. Ryan was Executive Director of Forestry and Horticulture for the Parks Department of the City of New York . In addition to municipal experience, he also worked as a commercial arborist for ten years. Dr. Ryan’s consulting work is in the area of tree and arboricultural accidents and he is Chairperson of the ANSI Z-133 Arboricultural Safety Committee.
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About H. Dennis P. Ryan
Dr. H. Dennis P. Ryan is an Arborist and the Program Coordinator of the Arboriculture/Urban Forestry Program at the University of Massachusetts , Amherst . Prior to joining the faculty at the University, Dr. Ryan was Executive Director of Forestry and Horticulture for the Parks Department of the City of New York . In addition to municipal experience, he also worked as a commercial arborist for ten years. Dr. Ryan’s consulting work is in the area of tree and arboricultural accidents and he is Chairperson of the ANSI Z-133 Arboricultural Safety Committee.
| Present | Professor, Environmental Conservation, University of Massachusetts Amherst | |
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Contact Information
119 Holdsworth
University of Massachusetts Amherst
Amherst MA, 01003
413-545-6626
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