School of Forestry Resources

School of
 
Forest Resources
    
University of Maine

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Robert G. Wagner

Professor

Department of Forest Ecosystem Science

Recent Journal Publications:

Wagner, R.G., and A.P. Robinson. IN PRESS. Critical period of interspecific competition for four northern conifers: Ten-year growth and associated vegetation dynamics. Canadian Journal of Forest Research.

Etheridge, D.A., D.A. MacLean, R.G. Wagner, and J.S. Wilson. 2006. Effects of intensive forest management on stand and landscape characteristics in northern New Brunswick, Canada (1945-2027). Landscape Ecology 21: 509-524.

Wagner, R.G., K.M. Little, B. Richardson, and K. McNabb. 2006. The role of vegetation management for enhancing productivity of the world's forests. Forestry 79(1): 57-79.

Etheridge, D.A., D.A. MacLean, R.G. Wagner, and J.S. Wilson. 2005. Changes in landscape composition and stand structure from 1945-2002 on an industrial forest in New Brunswick, Canada. Canadian Journal of Forest Research 35: 1965-1977.

Randolph, K.C., R.S. Seymour, and R.G. Wagner. 2005. Developing optimal commercial thinning prescriptions: A new graphical approach. Northern Journal of Applied Forestry 22(3): 170-174.

Wagner, R.G., M. Newton, E.C. Cole, J.H. Miller, and B.D. Shiver. 2004. The role of herbicides for enhancing forest productivity and conserving land for biodiversity in North America. Wildlife Society Bulletin. 32(4): 1028-1041.

Pitt, D., R.G. Wagner, and W.D. Towill. 2004. Ten years of vegetation succession following ground-applied release treatments in young black spruce plantations. Northern Journal of Applied Forestry. 21(3): 123-134.

Fraver, S., R.G. Wagner, and M. Day.  2002. Dynamics of down woody debris following gap harvesting in the Acadian forest of central Maine, USA. Canadian Journal of Forest Research 32: 2094–2105.

Robinson, D.E., R.G. Wagner, and C.J. Swanton. 2002. Effects of nitrogen on the growth of jack pine competing with Canada blue-joint grass and large-leaved aster. Forest Ecology & Management. 160: 233-242.

Noland, T.L., G.H. Mohammed, and R.G. Wagner. 2001. Morphological characteristics associated with tolerance to competition from herbaceous vegetation for jack pine, black spruce, and white pine seedlings. New Forests 21: 199-215. 

Robinson, D.E., R.G. Wagner, F.W. Bell, and C.J. Swanton. 2001. Photosynthesis, nitrogen-use efficiency, and water-use efficiency of jack pine seedlings in competition with four boreal forest plant species.  Canadian Journal of Forest Research 31: 2014-2025.

Shropshire, C., R.G. Wagner, F.W. Bell, and C.J. Swanton. 2001. Light attenuation by early successional plant species of the boreal forest. Canadian Journal of Forest Research 31: 812–823.

Wagner, R.G. 2000. Competition and critical-period thresholds for vegetation management in young conifer stands. Forestry Chronicle 76(6): 961-968.

Bell, F.W., M.T. Ter-Mikaelian, and R.G. Wagner. 2000. Relative competitiveness of nine early-successional species of boreal forest plants associated with seedlings of jack pine and black spruce. Canadian Journal of Forest Research 30: 790-800.

Wagner, R.G., G.H. Mohammed, and T.L. Noland. 1999. Critical period of interspecific competition for northern conifers associated with herbaceous vegetation. Canadian Journal of Forest Research 29: 890-897.

Ter-Mikaelian, M.T., R.G. Wagner, F.W. Bell, and C. Shropshire. 1999. Comparison of photosynthetically active radiation and cover estimation for measuring the effects of interspecific competition on jack pine seedlings. Canadian Journal of Forest Research 29: 883-889.

Wagner, R.G., and M.T. Ter-Mikaelian. 1999. Comparison of biomass component equations for four species of northern coniferous tree seedlings. Annals of Forest Science 56: 193-199. (abstract)

Wagner, R.G., J. Flynn, R. Gregory, C.K. Mertz, and P. Slovic. 1998. Acceptable practices in Ontario’s forests: Differences between the public and forestry professionals. New Forests, 16: 139-154.

Wagner, R.G., J. Flynn, R. Gregory, and P. Slovic. 1998. Public perception of risks and acceptability for forest vegetation management alternatives.  Forestry Chronicle, 74(5): 720-727. (abstract)

Wagner, R.G., and S.R. Radosevich. 1998. Neighborhood approach for quantifying interspecific competition in coastal Oregon forests. Ecological Applications 8(3): 779-794.

Sullivan, T.P., R.G. Wagner, D.G. Pitt, R.A. Lautenschlager, and D. Chen. 1998. Changes in diversity of plant and small mammal communities after herbicide application in a sub-boreal spruce forest. Canadian Journal of Forest Research 28: 168-177. 

 

Other Recent Publications:

Wagner, R.G. 2005. Forest regeneration trends: Dinosaurs, political correctness, and the future. pp. 36-42 In Colombo, S.J. (Compiler). The Thin Green Line: A Symposium on the State-of-the-Art in Reforestation Proceedings, July 26-28, 2005, Thunder Bay, Ontario, Canada. Forest Research Information Paper 160. Ontario Ministry of Natural Resources, Sault Ste. Marie, Ontario. (Invited paper)

Wagner, R.G. 2005. Top 10 principles for managing competing vegetation to maximize regeneration success and long-term yields. pp. 31-35 In Colombo, S.J. (Compiler). The Thin Green Line: A Symposium on the State-of-the-Art in Reforestation Proceedings, July 26-28, 2005, Thunder Bay, Ontario, Canada. Forest Research Information Paper 160. Ontario Ministry of Natural Resources, Sault Ste. Marie, Ontario. (Invited paper)

Saunders, M.R., and Wagner, R.G. 2005. Ten-year results of the Forest Ecosystem Research Program (FERP) - successes and challenges. pp. 147-153. In: Peterson, C.E., and Maguire, D.A. (Eds.) Balancing ecosystem values: innovative experiments for sustainable forestry. U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station, Portland, OR. Gen. Tech. Rep. PNW-GTR-635.

Wagner, R.G., E.H. Bowling, and R.S. Seymour. 2003. Assessing silviculture research priorities for Maine using a wood supply analysis. Maine Forest and Agriculture Experiment Station, Technical Bulletin 186. 115 p.

Wagner, R.G. (Compiler). 2002. Eastern CANUSA Forest Science Conference: Conference Proceedings. October 19-20, 2002, University of Maine, Orono, Maine. 122 p.

Daggett, R.H. and R.G. Wagner. 2002. Long-term effects of herbicide and PCT treatments on the development of spruce-fir stands: Update on the Austin Pond study. Cooperative Forestry Research Unit, University of Maine, Orono. CFRU Research Note, CFRU RN 02-01. 4 p.

Randolph, K.C., R.S. Seymour, and R.G. Wagner. 2002. ThinME: Development of commercial thinning guidelines for Maine spruce-fir forests. Cooperative Forestry Research Unit, University of Maine, Orono. CFRU Research Note, CFRU RR 02-01. 5 p.

Wagner, R.G. 2001. Arsenal herbicide reduces height growth in red spruce and balsam fir. Cooperative Forestry Research Unit, University of Maine, Orono. CFRU Research Note, CFRU RN 01-02. 4 p.

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. [Click here to order a copy]

Wagner, R.G., and J.M. Hagan (Eds.). 2000. Forestry and the Riparian Zone. Conference Proceedings. October 26, 2000. Wells Conference Center, University of Maine Orono, Cooperative Forestry Research Unit, University of Maine and Manomet Center for Conservation Sciences, Brunswick, ME. 79 p.

Wagner, R.G., R.S. Seymour, and D.B. Field. 2000. Scientific Basis and Implications for the November 2000 Maine Referendum: An Act Regarding Forest Practices. College of Natural Sciences, Forestry, and Agriculture White Papers, University of Maine, Orono. Forestry in the Spotlight, Series 4: Forestry 2000, May 2000. 4 p.

Wagner, R.G., A.F. Egan, W.D. Ostrofsky, and R.S. Seymour (Eds.). 1999. Thinning in the Maine Forest. Conference Proceedings. November 15-16, 1999. Augusta Civic Center, Augusta, ME. Cooperative Forestry Research Unit and Office of Professional Development, Coll. of Nat. Sci., For. and Agric., U. Maine, Orono, ME. 116 p.

 

Selected Past Journal Publications:

Ter-Mikaelian, M.T., R.G. Wagner, C. Shropshire, F.W. Bell, and C.J. Swanton. 1997. Using a mechanistic model to evaluate sampling designs for light transmission through forest plant canopies. Canadian Journal of Forest Research 27: 117-126. (abstract)

Korzukhin, M.D., M.T. Ter-Mikaelian, and R.G. Wagner. 1996. Process versus empirical models: which approach for forest ecosystem management? Canadian Journal of Forest Research 26: 879-887.

Harrington, T.B., R.G. Wagner, S.R. Radosevich, and J.D. Walstad. 1995. Interspecific competition and herbicide injury influence 10-year responses of coastal Douglas-fir and associated vegetation to release treatments. Forest Ecology & Management 76: 55-67.

Wagner, R.G. Toward integrated forest vegetation management. 1994. Journal of Forestry 92(11): 26-30.

Wagner, R.G. 1993. Research directions to advance forest vegetation management in North America. Canadian Journal of Forest Research 23: 2317-2327.

Wagner, R.G. and J.C. Zasada. 1991. Integrating plant autecology and silvicultural activities to prevent forest vegetation management problems. Forestry Chronicle 67(5): 506-513.

Wagner, R.G., and S.R. Radosevich. 1991. Neighborhood predictors of interspecific competition in young Douglas-fir plantations. Canadian Journal of Forest Research 21: 821-828.

Wagner, R.G., and S.R. Radosevich. 1991. Interspecific competition and other factors influencing the size of Douglas-fir saplings in the Oregon Coast Range. Canadian Journal of Forest Research 21: 829-835.

Wagner, R.G., T.D. Petersen, D.W. Ross, and S.R. Radosevich. 1989. Competition thresholds for the survival and growth of ponderosa pine seedlings associated with woody and herbaceous vegetation. New Forests 3: 151-170.

 

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This page was modified January 09, 2007

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