Stephen B. Horsley
USDA Forest Service
P.O. Box 267
Irvine , PA 16329-0267
Fax: (814) 563-1048
- B.S. School of Forest Resources, Pennsylvania State University,
University Park, PA 1965.
- M.S. Department of Forestry and Wildlife Management, University
of Massachusetts, Amherst, MA 1968.
- Ph. D. Department of Forestry and Wildlife Management,
University of Massachusetts, Amherst, MA 1970.
Since 1972, I have worked as a Plant Physiologist at the USDA Forest
Service Northeastern Research Station and have been located at the
Forestry Sciences Laboratory in Warren, PA, since 1973.
During my career, I
have worked extensively on problems of forest regeneration, including
plant-plant and herbivore-plant interference relationships, and
methods of vegetation management. Recently I have been a member of a
collaborative team that studies the factors contributing to sugar
maple decline in Pennsylvania.
I serve as an Associate Editor of the Canadian
Journal of Forest Research and previously was an Associate Editor
of Forest Science. I have also served as national chairman of
the Society of American Foresters Physiology Working Group and
chairman of Division 2.08 of the International Union of Forestry
Research Organizations. I currently hold Adjunct Professor positions
at the School of Forest Resources at the Pennsylvania State University
and at the State University of New York, College of Environmental
Science and Forestry.
- Research Plant Physiologist, USDA Forest Service, Northeastern Research
Branch Forestry Sciences Laboratory; Warren, PA. 1973 -
Civic and Professional Affiliations:
- Ecological Society of America
- Society of American Foresters
B. 1981. Control of herbaceous weeds in Allegheny hardwood
forests with herbicides. Weed Sci. 29:655‑662.
Horsley, S.B.; Bjorkbom, J. C. 1983. Herbicide treatment of
striped maple and beech in Allegheny hardwood stands. For. Sci.
Horsley, S.B.; Marquis, D.A. 1983. Interference by weeds and
deer with Allegheny hardwood reproduction. Can. J. For. Res.
1988. Control of understory vegetation in Allegheny hardwood
stands with Oust. North. J. Appl. For. 5(4):261‑262.
1990. Control of grass and sedge in Allegheny hardwood stands with
Roundup‑residual herbicide tank mixes. North. J. Appl. For.
1990. Tank mixing Roundup with adjuvants and other herbicides for
striped maple control. North. J. Appl. For. 7:19‑22.
Horsley, S.B. 1991. Using Roundup and
Oust to control interfering understories in Allegheny hardwood
stands. p. 281‑290. In Proc. Central Hardwood For. Conf.
4‑6 March 1991. University Park, PA. McCormick, L. H.; Gottschalk,
K. W. eds. USDA For. Serv. Gen. Tech. Rep. NE‑148.
Horsley, S.B.; McCormick, L.H.; Groninger, J.W. 1992. Effects
of timing of Oust application on survival of hardwood seedlings.
North. J. Appl. For. 9:22‑27.
Horsley, S.B.; Gottschalk, K.W. 1993. Leaf area and
net photosynthesis during development of Prunus serotina
seedlings. Tree Physiol. 12:55‑69.
1993. Role of allelopathy in hayscented fern interference with
black cherry regeneration. J. Chem. Ecol. 19:2737‑2755.
Horsley, S.B. 1993. Mechanisms of interference between
hayscented fern and black cherry. Can. J. For. Res. 23:2059‑2069.
Long, R.P., Horsley, S.B., Lilja, P.R. 1997. Impact of
forest liming on growth and crown vigor of sugar maple and
associated hardwoods. Can. J. For. Res. 27: 1560-1573.
Ristau, T.E., Horsley, S.B. 1999. Pin cherry effects on
Allegheny hardwood stand development. Can. J. For. Res. 29: 73-84.
Horsley, S.B., Long, R.P.
eds. 1999. Sugar maple ecology and health:
Proceedings of an international symposium. USDA For. Serv. Gen.
Tech. Rep. NE-261. 120 p
Horsley, S.B., Long, R.P., Bailey, S.W., Hallett, R.A.,
Hall, T.J. 2000. Factors associated with the decline-disease of
sugar maple on the Allegheny Plateau. Can. J. For. Res. 30:
Horsley, S.B., Long, R.P., Bailey, S.W., Hallett, R.A., Wargo,
P.M. 2002. Health of eastern North American sugar maple forests
and factors affecting decline. North. J. Appl. For. 19: 34-44.
S.B., Stout, S.L., deCalesta, D.S. 2003. White-tailed deer
impact on the vegetation dynamics of a northern hardwood forest.
Ecol. Appl. 13: 98-118.
S.W., Horsley, S.B., Long, R.P., Hallett, R.A. 2004.
Influence of edaphic factors on sugar maple nutrition and health
on the Allegheny Plateau. Soil Sci. Soc. Amer. J. 68: 243-252.
S.W., Horsley, S.B., Long, R.P. 2005. Thirty years of
change in forest soils of the Allegheny Plateau, Pennsylvania.
Soil Sci. Soc. Amer. J. 69: 681-690.
S.W., Horsley, S.B., Long, R.P. 2005. Response to "Comments
on "Thirty years of change in forest soils of the Allegheny
Plateau, Pennsylvania'". Soil Sci. Soc. Amer. J. 69: 2077-2078.
Beyea, J., Benner, M., Dunn, C.A., Fajvan, M.A., Freed, R.R.,
Grund, M., Horsley, S.B., Rhoads, A.F., Shissler, B.P.
2005. Managing white-tailed deer in forest habitat from an
ecosystem perspective: Pennsylvania case study. 2005. Report by
the Deer Management Forum for Audubon Pennsylvania and
Pennsylvania Habitat Alliance, Harrisburg. xix + 340pp.