Classifying regional variation in thermal regime based on stream fish community patterns. Transactions of the American Fisheries Society. 132:18-38.. 2003.
The effect of 50 years of landscape change on species richness and community composition. Global Ecology and Biogeography. 10:305-313.. 2001.
An example of clinal variation in eastern North American buckmoths (Saturniidae: Hemileuca). Journal of the Lepidopterists' Society. 51(1):47-56.. 1997.
Intraspecific variation in CO2 responses in Raphanus raphanistrum and Plantago lanceolata: assessing the potential for ecolutionary change with rising atmospheric CO2. Carbon Dioxide, Populations, and Communities. :13-22.. 1996.
Variability in early height growth rate of forest trees: implications for retrospective studies of stand dynamics. Canadian Journal of Forest Research. 25:767-776.. 1995.
Wet deposition of mercury in Michigan: meteorological associations and spatial variability. Doctor of Philosophy:265pp... 1995.
Biology of the genus Hemileuca (Lepidoptera: Saturniidae) in Michigan. Great Lakes Entomologist. 27(4):197-207.. 1994.
The effects of nutrients on periphyton. Doctor of Philosophy:98pp... 1993.
Phenotypic variation of Chinese aspens and their relationships to similar taxa in Europe and North America. Canadian Journal of Botany. 71:799-815.. 1993.
The effects of female age and habitat variation on the nesting success of Tree Swallows. School of Natural Resources and Environment. Master of Science:42pp... 1989.
A survey and experimental study of algal drift in a third order stream. Doctor of Philosophy:124pp... 1989.
Variation in benthic diatom (Bacillariophyceae) immigration with habitat characteristics and cell morphology. Journal of Phycology. 25:120-129.. 1989.
Variation in diatom community structure among habitats in sandy streams. Journal of Phycology. 25:678-686.. 1989.
Sources of variation in lifetime reproductive success in a non-territorial damselfly. Reproductive Success. :24-42.. 1988.
Affinities and high-order diversity within landscape mosaics. Evolutionary Ecology. 1(1):11-29.. 1987.
Rapid genotypic change in a population of the grass Danthonia spicata following disturbance. Canadian Journal of Botany. 65:1819-1823.. 1987.
Seasonal and individual variation in gregarine parasite levels in the field crickets Gryllus veletis and G. pennsylvanicus. Ecological Entomology. 12:341-348.. 1987.
Variability in attractiveness of male field crickets (Orthoptera: Gryllidae) to females. Animal Behaviour. 35:1240-1248.. 1987.
Genetic differentiation of life history traits in populations of Mesocyclops edax (Crustacea: Copepoda). The Biological Bulletin. 170:279-295.. 1986.
Heritable life history variation in widely separated populations of Mesocyclops edax (Crustacea: Copepoda). The Biological Bulletin. 170:296-304.. 1986.
Life history variation in north temperate and subtropical populations of Mesocyclops edax (Crustacea: Copepoda). Verhandlungen der Internationale Vereinigung fur Theoretische und Angewandte Limnologie. 22:3149-3153.. 1985.
A comparative study of the two varieties of Mimulus glabratus (Scrophulariceae) in Michigan. Department of Biology. Master of Science:58pp... 1983.
Quantitative and experimental studies of the systematics of Arctostaphylos uva-ursi (Ericaceae) in North America. Doctor of Philosophy:362pp... 1983.
Trichome variation and the ecology of Arctostaphylos in Michigan. Michigan Botanist. 21:171-180.. 1982.
Metabolism and thermoregulation in hatchling Ring-billed gulls. The Condor. 78:49-60.. 1976.
Investigations in the white waterlilies (Nymphaea) of Michigan. Michigan Botanist. 9:72-86.. 1970.
Natural variation and delineation of clones of Populus tremuloides and P. grandidentata in northern lower Michigan. Silvae Genetica. 18:130-142.. 1969.
The occurrence of the lichen complex, Cetraria ciliaris, in the Straits region of Michigan. Michigan Botanist. 8:67-71.. 1969.
Variation of forest site productivity among soil taxonomic units in northern lower Michigan. School of Natural Resources. Doctor of Philosophy:176pp... 1969.
Notes on species of Leccinum. I.: Additions to Section Leccinum. Lloydia. 31(3):252-267.. 1968.
Clonal variation in suckering of aspen obscures effect of various clearcutting treatments. Journal of Forestry. 62:749-750.. 1964.
Hybrid aspens in the lower peninsula of Michigan. Rhodora. 63(755):311-324.. 1961.
Variation in tree size and quality of bigtooth aspen clones. School of Natural Resources. Master of Forestry:69pp... 1960.
Natural variation and clonal development of Populus tremuloides and P. grandidentata in northern lower Michigan. Doctor of Philosophy:318pp... 1959.
Morphological variations in Mesovelia mulsanti (Hemiptera, Mesovelidae). The University of Kansas Science Bulletin. 36(5):125-148.. 1954.