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Phenotypic basis for a feeding change in an insular population of garter snakes. Developmental psychobiology. 17(5):457-463.. 1984.
Photosynthate allocation to floral nectar: a neglected energy investment. Ecology. 65:1775-1779.. 1984.
Physiological and ultrastructural responses of Cyclotella meneghiniana (Bacillariophyta) to light intensity and nutrient limitation. Journal of Phycology. 20:173-183.. 1984.
Precise radiotracer measurement of the rate of sediment reworking by Stylodrilus heringianus and the effects of variable dissolved oxygen concentrations. Journal of Great Lakes Research. 10:335-347.. 1984.
Proterometra edneyi n. sp. (Digenea: Azygiidae): behavior and distribution of acetylcholinesterase in cercariae. Transactions of the American Microscopical Society. 103:383-391.. 1984.
Protozoan colonization rates and trophic status of some freshwater wetland lakes. Journal of Protozoology. 31:456-467.. 1984.
The persistence of Danthonia spicata during secondary succession. Doctor of Philosophy:170pp... 1983.
Phenotypic basis for feeding in insular garter snakes. American Philosophy Society Yearbook. :163.. 1983.
Photosynthetic cost of nectar production. Proceedings of the Rochester Academy of Science. 14:89.. 1983.
Plants gas up. Natural History. 92(7):4-8.. 1983.
A preliminary report on the pollination of Sarracenia purpurea in a forest-swale ecotone. Carnivorous Plant Newsletter. 12:60-62,74.. 1983.
A pyralid moth (Lepidoptera) as pollinator of blunt-leaf orchid. Great Lakes Entomologist. 16:57-60.. 1983.
Parental care and reproductive ecology of the North American catfish, Ictalurus nebulosus. Doctor of Philosophy:160pp... 1982.
Plants and environment. Ecology. 63(5):1612-1613.. 1982.
Population responses of plant-associated invertebrates to foraging by largemouth bass fry (Micropterus salmoides). Hydrobiologia. 96:169-176.. 1982.
Post-Glacial Vegetation of Eastern Upper Michigan. Doctor of Philosophy. 1982.
Predictive and reactive systems for aquatic ecosystem quality control. Scientific Basis of Water-Resource Management, Geophysics Study Commission, National Resource Council. :72-84.. 1982.
Protozoan communities, macrophyte vegetation and trophic status of northern Michigan wetland lakes. Doctor of Philosophy:116pp... 1981.
Physiological and ecological aspects of the cosmopolitan Opilionid, Phalangium opilio. Soil biology as related to land use practices: proceedings of the VII International Soil Zoology Colloquium of the International Society of Soil Science (ISSS), Syracuse, 29 July-3 August 1979.. 1980.
Protozoan species accrual on artificial islands in differing lentic and wetland systems. Hydrobiologia. 75:161-178.. 1980.
Polistes wasps (Hymenoptera: Vespidae) show interference competition with other insects for Kermes scale insect (Homoptera: Kermesidae) secretions. Proceedings of the Entomological Society of Washington. 81:570-575.. 1979.
Prevalence of dermatitis-producing schistosomes in natural bird populations of lower Michigan. Proceedings of the Helminthological Society of Washington. 46:58-63.. 1979.
Protozoan colonization of artificial substrates. Methods and Measurements of Periphyton Communities: A Review. Special Technical Publication 690:34-57.. 1979.
Prudent predation: a field study involving three species of tiger beetles. Oikos. 31:128-136.. 1978.
Post-Pleistocene diatom succession in Douglas Lake, Michigan. Journal of Phycology. 13:73-80.. 1977.
Potentiation of zinc stress caused by parasitic infection of snails. Hydrobiologia. 55:225-229.. 1977.
Preliminary report of outer wall helices in trichomes of certain dicots. Canadian Journal of Botany. 55:128-132.. 1977.
The prey of six species of hawks in northern lower Michigan. Jack Pine Warbler. 54:70-74.. 1976.
Periodicity of spore release in Marasmius rotula. Michigan Botanist. 14:83-90.. 1975.
Perspectives of Biophysical Ecology. :609pp... 1975.
On the physiological significance of the preferred body temperatures of reptiles. Perspectives of Biophysical Ecology. :443-473.. 1975.
A preliminary study of the achene epidermis of certain Carex (Cyperaceae) using scanning electron microscopy. Michigan Botanist. 14:67-72.. 1975.
Predation and prey community structure: an experimental study of the effect of mosquito larvae on the protozoan communities of pitcher plants. Ecology. 55:475-492.. 1974.
Protozoan colonization rates on artificial substrates suspended at different depths. Transactions of the American Microscopical Society. 93:206-210.. 1974.
Protozoans (Protozoa). Pollution Ecology of Freshwater Invertebrates. :1-28.. 1974.
Population characteristics of a species ensemble of waterboatmen (Corixidae). Ecology. 54:535-544.. 1973.
The protozoan colonization of polyurethane foam units anchored in the benthic area of Douglas Lake, Michigan. Transactions of the American Microscopical Society. 92:648-656.. 1973.
The psilopezioid fungi. III. The genus Psilopezia (Pezizales). American Journal of Botany. 60:355-365.. 1973.
The psilopezioid fungi. IV. The genus Pachyella (Pezizales). Canadian Journal of Botany. 51:2009-2023.. 1973.
Phosphorus, silica, and eutrophication of Lake Michigan: The limiting nutrient controversy. American Society of Limnology and Oceanography Symposium. 1. 1972.
Pollution controlled changes in algal and protozoan communities. Water Pollution Microbiology. :245-272.. 1972.
Pollution related structural and functional changes in aquatic communities with emphasis on freshwater algae and protozoa. Proceedings of the Academy of Natural Sciences of Philadelphia. 124(5):79-127.. 1972.
Predation and prey community structure: an experimental study of the effect of mosquito larvae on the protozoan communities of pitcher plants. Doctor of Philosophy:108pp... 1972.
Probing the delicate balance: Research at the Biological Station. Research News, Office of Research Administration, The University of Michigan. 23(4):1-16.. 1972.
Phytoplankton assemblage differences at in shore versus offshore stations in Lake Michigan and their effects on nutrient enrichment experiments. 14th Conference on Great Lakes Research. :114-118.. 1971.
Phytoplankton, nutrients, and primary productivity in Lake Michigan as influenced by upwelling. 14th Conference on Great Lakes Research. :102-113.. 1971.
Present status of Elliptio complanatus in Douglas Lake, Michigan. Sterkiana. 43:10.. 1971.
Periodicity of spore discharge in the Hymenomycetes. Mycologia. 62:1145-1169.. 1970.
Philadelphia Vireo breeding in Michigan. Jack Pine Warbler. 48:85.. 1970.
A preliminary report on the varieties of Maianthemum canadense in northern Michigan. Michigan Botanist. 9:48-52.. 1970.
Plant fossils from a Cary-Port Huron interstade deposit and their paleoecological interpretation. Geological Society of America Special Paper 123. INQUA Volume:225-248.. 1969.
Population studies in the chemical species of the Cladonia chlorophaea group. Michigan Botanist. 8:170-174.. 1969.
Progenesis in Proterometra sagittaria Dickerman, 1946 (Trematoda: Azygiidae). Journal of Parasitology. 55:452.. 1969.
A preliminary report on the distribution of gymnosperms in Michigan. Michigan Botanist. 7:121-128.. 1968.
The pupa of Chaoborus albatus with a key to eastern Chaoborus pupae. Entomological News. 79:275-277.. 1968.
Plant factors affecting evapotranspiration. Irrigation of Agricultural Lands. (11):506-521of1180.. 1967.
A preliminary account of the North American species of Leccinum, sections Luteoscabra and Scabra. Michigan Botanist. 7:107-154.. 1967.
Probable existence of synergistic interactions among different species of protozoans. Revista de Biologia. 6(1-2):103-108.. 1967.
Ptyalincola ondatrae, gen. et sp. n. (Trematoda: Brachylaimidae), a fluke inhabiting the salivary glands of muskrats. Journal of Parasitology. 53:739-742.. 1967.
Phalangida of the Great Lakes region. The American Midlands Naturalist. 75:347-366.. 1966.
Planktonic and benthic Phycomycetes from Lake Michigan. 9th Conference on Great Lakes Research. :19.. 1966.
A preliminary account of the North American species of Leccinum, section Leccinum. Michigan Botanist. 5:131-179.. 1966.
A preliminary account of the North American species of Rhizopogon. Memoirs of The New York Botanical Garden. 14(2):1-177.. 1966.
A preliminary study of aquatic Phycomycetes in the lakes of the Huron Mountains, Michigan. Veroeffentlichungen des Instituts fuer Meeresforschung in Bremerhaven. 10:93-106.. 1966.
A preliminary comparative study of asexual reproduction in Dicranum flagellare and Dicranum montanum. The Journal of the Hattori Botanical Laboratory. 28:122-128.. 1965.
A preliminary note on a population of Monoblepharis. Transactions of the British Mycological Society. 48:55-58.. 1965.
People and their snail-borne diseases. Michigan Quarterly Review. 2(2):106-114.. 1963.
Phytosociological analysis of aspen communities on three site classes for Populus grandidentata in western Cheboygan County, Michigan. Vegetatio. 11:253-264.. 1963.
Pollen morphology in the maples (Acer L.). Papers of the Michigan Academy of Science, Arts and Letters. 48:151-164.. 1963.
A preliminary survey of the myxomycetes of Emmet and Cheboygan Counties. Papers of the Michigan Academy of Science, Arts and Letters. 48:131-136.. 1963.
Proprioception in the legs of phalangids. The Biological Bulletin. 124:262-267.. 1963.
The parasitic behavior of Melampyrum lineare and a note on its seed color. Rhodora. 64(757):15-23.. 1962.
Proterometra dickermani, sp. nov. (Trematoda: Azygiidae). Transactions of the American Microscopical Society. 81:279-282.. 1962.
Paul Smith Welch. Hydrobiologia. 17:259-261.. 1961.
Pisidium benslowanum (Sheppard) in Lake Michigan. The Nautilus. 74:123.. 1961.
Pohlia bulbifera - a new record for Michigan. The Bryologist. 64:383.. 1961.
Pachytene chromosomes in three species of schistosomes. Journal of Heredity. 51(1):2-12.. 1960.
Phytosociological studies of some beech-maple stands in Michigan's lower peninsula. Papers of the Michigan Academy of Science, Arts and Letters. 45:83-91.. 1960.
Phytosociological study of Inverness Mud Lake Bog, Cheboygan County, Michigan. Papers of the Michigan Academy of Science, Arts and Letters. 45:61-75.. 1960.
Pollen spectra from bryophytic polsters, Inverness Mud Lake Bog, Cheboygan County, Michigan. Papers of the Michigan Academy of Science, Arts and Letters. 45:41-60.. 1960.
Piping plover nesting in August. Jack Pine Warbler. 37:114.. 1959.
Plant moisture measurements. Proceedings of the IX International Botanical Congress, Montreal. 2:299-300.. 1959.
The production of cercariae by a strigeid mother sporocyst. Journal of Parasitology. 44:289-291.. 1958.
Polyembryony in Hierochloe odorata (L.) Beauv. The Ohio Academy of Science. 57(5):315-320.. 1957.
The phenomenon of bird song. The Emory University Quarterly. 12(3):139-147.. 1956.
Preliminary list of the Arrenuri of Michigan. Part III. The subgenera Micruracarus and Truncaturus. Transactions of the American Microscopical Society. 74:60-67.. 1955.
Preliminary studies of the Hydracarina of Michigan: the subfamily Foreliinae Viets (Acarina: Pionidae). Annals of the Entomological Society of America. 48(4):299-307.. 1955.
Plasmodesmata in some hepaticae. The Bryologist. 57(3):217-225.. 1954.
Preliminary list of the Arrenuri of Michigan. Part I. The subgenus Arrenurus. Transactions of the American Microscopical Society. 73:39-58.. 1954.
Preliminary list of the Arrenuri of Michigan. Part II. The subgenus Megaluracarus. Transactions of the American Microscopical Society. 73:367-380.. 1954.
Preliminary studies on the Hydracarina of Michigan: the genus Limnesia, subgenera Limnesiopsis Piersig and Limnesiella Daday. Psyche. 61:146-153.. 1954.