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Diana J Evans

Forestry and Natural Resources 

  • Extension Information Coordinator/Web & Communication Producer
PFEN Room 125B
715 W. State Street
West Lafayette, IN 47907-2061

Robert Wagner, professor and head, comes to Purdue from the University of Maine, where he was the Henry W. Saunders Distinguished Professor in Forestry and the Director of the Center for Research on Sustainable Forests and Cooperative Forestry Research. He received his bachelor's degree in forest management from Utah State University, his master’s in forest ecology/silviculture from the University of Washington, and his PhD in silviculture/vegetation management from Oregon State University. He served as a program leader and senior scientist at the Ontario Forest Research Institute in Ontario Canada before joining the faculty in the School of Forest Resources at the University of Maine. At Maine he served as Director of the Cooperative Forestry Research Unit, Associate Director of the Forest Bioproducts Research Institute, and Director of the School of Forest Resources prior to his appointment as Distinguished Professor and Director of the Centers.

Dr. Wagner's research includes: healthy and sustainable forests which provides a wide array of critical ecosystem services; improving the success of forest regeneration following harvesting, as well as improving the composition, productivity, and quality of young stands; understanding the economics and stand dynamics associated with thinning spruce-fir stands; understanding how to improve the quality of hardwood regeneration in diseased beech-dominated stands; and understanding the effects of silvicultural intensity and compositional objectives on stand productivity and dynamics.

* underlined authors are graduate students or post-doctoral fellows for which I was advisor

Also see my Google Scholar page.

Nelson, A.S., R.G. Wagner, M.E. Day, A.R. Weiskittel, and M.R. Saunders. 2015. Effects of species composition, management intensity, and shade tolerance on vertical distribution of leaf area index in juvenile stands in Maine, USA. European Journal of Forest Research 134 (2): 281-291.

Nelson, A.S., and R.G. Wagner. 2014. Spatial coexistence of American beech and sugar maple regeneration in post-harvest northern hardwood forests. Annals of Forest Science 71: 781–789.

Nelson, A.S., Weiskittel, A.R., Wagner, R.G., and Saunders, M.R. 2014. Development and evaluation of aboveground small tree biomass models for naturally regenerated and planted species in eastern Maine, U.S.A. Biomass and Bioenergy 68: 215-227.

Rice B., A.R. Weiskittel, and R.G. Wagner. 2014. Efficiency of alternative forest inventory methods in partially harvested stands. European Journal of Forest Research 133(2): 261-272.

Olson, M.G., S.R. Meyer, R.G. Wagner, and R.S. Seymour. 2014. Commercial thinning stimulates natural regeneration in spruce–fir stands. Canadian Journal of Forest Research. 44(3): 173-181.

Bataineh, M.M., R.G. Wagner, M.G. Olson, E.K. Olson. 2013. Midrotation response of ground vegetation to herbicide and precommercial thinning in the Acadian Forest of Maine, USA. Forest Ecology & Management 313: 132–143.

Bataineh, M.M., L. Kenefic, A.R.Weiskittel, R.G. Wagner, and J. Brissette. 2013. Influence of partial harvesting and site factors on the abundance and composition of natural regeneration in the Acadian Forest of Maine, USA. Forest Ecology & Management 306: 96–106.

Nelson, A.S., R.G. Wagner, M.R. Saunders, and A.R. Weiskittel. 2013. Influence of management intensity on the productivity of young early successional Acadian stands in eastern Maine. Forestry 86 (1): 79-89.

Wagner, R.G. and S.J. Colombo (Editors). 2001. Regenerating the Canadian forest: Principles and practice for Ontario. Fitzhenry & Whiteside, Markham, Ontario, Canada. 650 p.