Professor Emeritus
Wildlife Ecology
274 Beverly Rd.
Newark, DE 19711
302-369-4089
E-mail: rroth@udel.edu
Education
Ph.D. 1971 Zoology (Ecology) University of Illinois
M.S. 1967 Zoology University of Illinois
B.S. 1965 Zoology University of Arkansas
Research Interests
Avian Ecology, particularly breeding season ecology of birds in forest fragments. Most time since 1974 spent on long-term demographic study of a color-banded wood thrush population in a suburban forest fragment.
Roth, R. and R. K. Johnson. 1993. Long-term dynamics of a Wood Thrush population breeding in a forest fragment. Auk 110: 37-48.
Weinberg, H. and R. Roth. 1994. Rectrix shape as an indicator of age in the Wood Thrush. J. Field Ornithol. 65: 115-121.
Roth, R., M. Johnson, and T. Underwood. 1996. Wood Thrush. In The Birds of North America, No. 246. (A. Poole and F. Gill, eds. Acad. Nat. Sciences and Amer. Ornithologists' Union. 26 pp.
Weinberg H. and R. Roth. 1998. Forest area and habitat quality for nesting Wood Thrushes. Auk 115: 879-889.
Brown, W.P. and R. Roth. 2002. Temporal patterns of fitness and survival in the Wood Thrush. Ecology 83:958-969.
Underwood, R.M., R.J. Crockett, R. Roth, C.L. Keeler, Jr., and M.S. Parcells. 2002. A comparison of flow cytometry and the polymerase chain reaction as sexing techniques for the Wood Thrush. J. Field Ornithology 73:239-245.
Underwood, T.J. and R. Roth. 2002. Demographic variables are poor indicators of Wood Thrush productivity. Condor 104:92-102.
Perkins, K.A., R. Roth, J. L. Bowman, and J. Green. 2004. Flushing, capture, and bleeding do not affect return rate of female Wood Thrushes ( Hylocichla mustelina ) in Delaware . Auk 121: 354-360.
Brown, W.P. and R.R. Roth. 2004. Juvenile survival and recruitment of Wood Thrushes (Hylocichla mustelina) in a forest fragment. J. Avian Biology 35: 316-326
Brown, W. P. Eggermont, V. LaRiccia, and R. R. Roth. 2007. Are parametric models suitable for estimating avian growth rates? J. Avian Biology. 38: 495-506
Past Graduate Students
Bartlett, Charles. 1991. Factors affecting predation rates on artificial nests in forest fragments. M.S. Entomology (Assistant Professor, Entomology, U. Delaware)
Johnson, Mark. 1994. The effects of age and habitat on the reproductive performance of Wood Thrushes. M.S. Entomology (Ph. D., Environmental toxiciology, Va. Tech; Toxicological and Risk Assessment, U.S. Army, Aberdeen, MD)
Weinberg, Howard. 1994. Impact of forest size and landscape urbanization on a Neotropical migrant, the Wood Thrush. M.S. Entomology ( US Customs Agriculture Specialist, Duluth, MN )
Underwood, Todd. 1996. Estimating Wood Thrush productivity with demographic and constant-effort mist netting data. M.S. Entomology & Applied Ecology (Ph.D. Zoology, U. Manitoba; Asst. Professor, Biology, Kutztown U, PA)
Brown, William. 1999. Annual and lifetime reproductive success of the Wood Thrush in a forest fragment. M.S. Entomology & Applied Ecology (Ph.D., Ent. & Applied Ecology, U. of Delaware; Lecturer, Kutztown U., PA)
Slotterback, John. 1999. Nest location parameters and risk of predation in Wood Thrushes. M.S. Entomology & Applied Ecology (School teacher)
Jason Johnston. 2002. When Should Birds Desert Nests? A Manipulative Study of House Sparrows. M.S. Entomology & Applied Ecology (Ph. D., Biology, U.. Maine; Asst. Prof. Wildl. Ecology, U. Maine, Presque Isle)
Christopher Heckscher. 2003 . Veery nest sites in a Middle-Atlantic Piedmont forest: vegetative physiognomy and use of alien shrub species . M.S. Entomology & Applied Ecology. ( Zoologist
Del. Natural Heritage Program, Del. Division of Fish & Wildlife).
Jared Judy. 2005. Correlates and possible causes of fluctuations in a local Wood Thrush population . M.S. Entomology & Applied Ecology ( Preserve Manager, Texas City Prairie Preserve, TX)
Roland Wall. 2007. Ecological conditions of stormwater retention ponds. M.S. Entomology & Applied Ecology ( Director of Environmental Policy , Environmental Associates,The Academy of Natural Sciences, Philadelphia)