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Oxidation of Volatile Organic Compounds as the Major Source of Formic Acid in a Mixed Forest Canopy. Geophysical Research Letters. 46(5):2940-2948.. 2019.
An omnipresent diversity and variability in the chemical composition of atmospheric functionalized organic aerosol. Communications Chemistry. (1). 2018.
Open-top chambers for temperature manipulation in taller-stature plant communities. Methods in Ecology and Evolution.. 2017.
Observations of stem water storage in trees of opposing hydraulic strategies. Ecosphere. 6(9):art165.. 2015.
Observations of reactive nitrogen oxide fluxes by eddy covariance above two midlatitude North American mixed hardwood forests. Atmospheric Chemistry and Physics. 14(6):2939-2957.. 2014.
Observations and modeling of formaldehyde at the PROPHET mixed hardwood forest site in 2008. Atmospheric Environment. 49:403-410.. 2012.
Ornithology in Northern Michigan. The Changing Environment of Northern Michigan: A Century of Science and Nature at the University of Michigan Biological Station. :109-118.. 2010.
An overview of autonomous underwater vehicle research and testbed at PeRL. Marine Technology Society Journal. 43(2):33-47.. 2009.
Our swimmer's itch hero. August:141,143.. 2008.
An overview of AUV algorithms research and testbed at the University of Michigan. 2008 IEEE/OES Autonomous Underwater Vehicles (AUV)2008 IEEE/OES Autonomous Underwater Vehicles. :1-9.. 2008.
Observing succession on aspen-dominated landscapes using a remote sensing-ecosystem approach. Landscape Ecology. 22:1395-1410.. 2007.
The organic geochemistry of charcoal black carbon in the soils of the University of Michigan Biological Station. Doctor of Philosophy:171pp... 2006.
Observations of reactive nitrogen and ozone at a rural site in Michigan. Doctor of Philosophy:110pp... 2001.
Observations of reactive oxidized nitrogen and speciation of NOy during the PROPHET summer 1998 intensive. Journal of Geophysical Research. 106(D20):24,359-24,386.. 2001.
Orientation in complex chemical landscapes: spatial arrangement of chemical sources influences crayfish food-finding efficiency in artificial streams. Limnology and Oceanography. 46(2):238-247.. 2001.
Overview of the Program for Research on Oxidants: PHotochemistry, Emissions, and Transport (PROPHET) summer 1998 measurements intensive. Journal of Geophysical Research. 106(D20):24,275-24,288.. 2001.
Optimal foraging and mucus-trail following in the carnivorous land snail Haplotrema concavum (Gastropoda: Pulmonata). Malacological Review. 29:85-99.. 1996.
Observing soil biota in situ. Geoderma. 56:25-36.. 1993.
Occurrence of hybrids between bigtooth and trembling aspen in Michigan. Canadian Journal of Botany. 63:1888-1890.. 1985.
Observations of Potamogeton hillii Morong in North America. Rhodora. 86(845):101-111.. 1984.
Observations of differential epiphytism on Cladophora glomerata and Bangia atropurpurea from Grand Traverse Bay, Lake Michigan. Micron. 12:219-220.. 1981.
Observations on the keel-bearing epipelic diatoms of Lake Kathrine, Michigan. Journal of Phycology. 17:abstr.. 1981.
Observations on chytridiaceous parasites of phanerogams. XXVIII. Physodermas on Sium suave. Mycologia. 71:423-433.. 1979.
Observations on the ecology and distribution of free-living Ergasilidae (Copepoda: Cyclopoida). Crustaceana. 35:313-317.. 1978.
Orientation responses of Ring-billed Gull chicks: a re-evaluation. Animal Migration, Navigation, and Homing. :311-317.. 1978.
Observations on chytridiaceous parasites of phanerogams. XXVI. Physoderma gerhardti Schroeter on Phalaris arundinacea L. Archives of Microbiology. 114:241-247.. 1977.
Observations on the winter ecology of Red Fox (Vulpes fulva) on South Manitou Island, Michigan. :22pp... 1977.
Observed acts of predation on birds in northern lower Michigan. Living Bird. 15:33-41.. 1977.
Observations on chytridiaceous parasites of phanerogams. XXV. Physoderma johnsii Sparrow, a parasite of Caltha palustris L. American Journal of Botany. 63:602-607.. 1976.
Observation of the narcotization of crustacean zooplankton. Crustaceana. 28:220-224.. 1975.
Observations on chytridiaceous parasites of phanerogams. XXIII. Notes on Physoderma. Mycologia. 67:552-568.. 1975.
Observations on chytridiaceous parasites of phanerogams. XXIV. The epibiotic stage of Physoderma. Canadian Journal of Botany. 53:1365-1370.. 1975.
Observations on chytridiaceous parasites of phanerogams. XXII. A Physoderma on Ranunculus septentrionalis Poir. Archives of Microbiology. 100:41-50.. 1974.
Ornithology at the University of Michigan Biological Station and the Birds of the Region. Specìal Publication of the Kalamazoo Nature Center. (No. 1):118pp... 1974.
An observation on the protozoan communities in the bottom sediments of Lake Huron. Revista de Biologia. 7:151-153.. 1970.
Observations on chytridiaceous parasites of phanerogams. XVII. Notes on a Physoderma parasitic on Asclepias incarnata. Archiv fur Mikrobiologie. 70:72-81.. 1970.
Observations on chytridiaceous parasites of phanerogams. XVIII. A Physoderma on Juncus pelocarpus Mey. Archiv fur Mikrobiologie. 70:104-109.. 1970.
Orientation in Gulls: effect of distance, direction of release, and wind. Living Bird. 9:75-95.. 1970.
The occurrence of the lichen complex, Cetraria ciliaris, in the Straits region of Michigan. Michigan Botanist. 8:67-71.. 1969.
Orientation behavior of Ring-billed Gull chicks and fledglings. The Condor. 71:418-425.. 1969.
Observations on chytridiaceous parasites of phanerogams. XVI. Notes on Physoderma from Scirpeae. Archiv fur Mikrobiologie. 51:351-364.. 1965.
Observations on Minchinia pickfordae (Barrow 1961) found in snails of the Great Lakes region. Transactions of the American Microscopical Society. 84:587-593.. 1965.
Our lone native primrose. 13(2):4.. 1965.
Observations on chytridiaceous parasites of phanerogams. XIII. Physoderma maculare Wallroth. Archiv fur Mikrobiologie. 48:136-149.. 1964.
Observations on chytridiaceous parasites of phanerogams. XIV. Physoderma calami. American Journal of Botany. 51:958-963.. 1964.
Observations on chytridiaceous parasites of phanerogams. XV. Host range and species concept studies in Physoderma. Archiv fur Mikrobiologie. 49:103-111.. 1964.
Observations on the morphology and life history of Oswaldocruzia sp. in frogs. The Proceedings of the Iowa Academy Science. 71:525-531.. 1964.
Observations on two species of Rhizophydium from northern Michigan. Transactions of the British Mycological Society. 46:530-536.. 1963.
Occurrence and population densities of yeast species in a fresh-water lake. Antonie van Leeuwenhoek. 29:308-312.. 1963.
Observations on the reproduction and development of the gametophyte of Tetraphis pellucida in culture. The Bryologist. 65:154-166.. 1962.
Observations of a haplosporidian, Haplosporidium pickfordi, sp. nov. in fresh water snails. Transactions of the American Microscopical Society. 80:319-329.. 1961.
Observations on breeding behavior of Veeries in Michigan. Jack Pine Warbler. 39:62-71.. 1961.
Observations on chytridiaceous parasites of phanerogams. X. Notes on some species of Physoderma occurring in Douglas Lake region of northern Michigan. Papers of the Michigan Academy of Science, Arts and Letters. 46:183-194.. 1961.
Observations on chytridiaceous parasites of phanerogams. XI. A Physoderma on Agropyron repens. American Journal of Botany. 48:850-858.. 1961.
The occurrence of Bryum coronatum in Michigan. The Bryologist. 64:64-65.. 1961.
The osteology of the troutperch, Percopsis omiscomaycus (Walbaum). School of Natural Resources. Master of Science:42pp... 1961.
Observations of schistosome miracidial behavior in the presence of normal and abnormal snail hosts and subsequent tissue studies of these hosts. Journal of the Elisha Mitchell Scientific Society. 76:121-133.. 1960.
Observations on chytridiaceous parasites of phanerogams. IX. Epibiotic sporangial stages of Physoderma collected in the field. Archiv fur Mikrobiologie. 34:93-102.. 1959.
Observations on a nesting of the Black-throated Blue Warbler. Jack Pine Warbler. 36:12-16.. 1958.
Observations on chytridiaceous parasites of phanerogams. VII. A Physoderma on Lycopus americanus. American Journal of Botany. 44:661-665.. 1957.
Observations on the Michigan flora. VI. Distribution records of some angiosperms new, rare, or misinterpreted in the state. Brittonia. 9:83-101.. 1957.
Ostracoda (Crustacea) from the northern Lower Peninsula of Michigan. Transactions of the American Microscopical Society. 76:212-218.. 1957.
Observations on some Heleidae (Diptera) of the psammolittoral zone of Douglas Lake, Michigan. Entomological News. 66(4):93-97.. 1955.
Observations on the bionomics of some Culicoides of Cheboygan County, Michigan, (Diptera, Heleidae). Bulletin of the Brooklyn Entomological Society. 50(5):113-120.. 1955.
Observations on the biology of the ten notonectoid species found in the Douglas Lake, Michigan region. The American Midlands Naturalist. 51:105-132.. 1954.
Observations on the maturation of gametocytes of Leucocytozoon simondi. Proceedings of the Helminthological Society of Washington. 20(2):127-128.. 1953.
Observations on the Michigan Flora, IV: A botanical survey in Huron County. The Asa Gray Bulletin. 2:17-24.. 1953.
Observations on the Michigan flora, V: Plants of the St. Ignace Causeway (Mackinac County)--the second four years. Denison University Bulletin, Journal of the Scientific Laboratories. 43:53-60.. 1953.
Observations on the Michigan flora, III. The flora of Green Island (Mackinac County). The Ohio Academy of Science. 50:182-190.. 1950.
Observations on the Michigan flora. A survey of the St. Ignace Causeway (Mackinac County). Denison University Bulletin, Journal of the Scientific Laboratories. 41:39-45.. 1949.
Observations on the Michigan flora, II: Some plants new or rare in Emmet, Cheboygan, and Mackinac Counties, Michigan. Denison University Bulletin, Journal of the Scientific Laboratories. 41:77-81.. 1949.
An occurrence of gametophytes of Equisetum in Cheboygan County, Michigan. American Fern Journal. 39(4):106-109.. 1949.
Ovulation induced in Rana pipiens by bird pituitary preparations. The Anatomical Record. 84:70-71.. 1942.
Observations on the biology of three semiaquatic lacustrine moths. Transactions of the American Microscopical Society. 58:327-348.. 1939.
Observations on precocious metacercarial development in the trematode superfamily Plagiorchioidea. Journal of Parasitology. 24:273-280.. 1938.
Observations on the Sisyridae (Neuroptera). Papers of the Michigan Academy of Science, Arts and Letters. 17:681-684.. 1933.
Observations on the life history of Rheumatobates rileyi (Berg.) (Hemiptera, Gerridae). Papers of the Michigan Academy of Science, Arts and Letters. 13:433-446.. 1931.
Observations of the nesting activities of the hermit thrush. Bird-Banding. 1:72-77.. 1930.
Odonata collected in Cheboygan and Emmet Counties, Michigan. Papers of the Michigan Academy of Science, Arts and Letters. 5:389-398.. 1925.
Observations on the early larval activities of Nymphula maculalis Clemens (Lepidoptera). Annals of the Entomological Society of America. 17:395-402.. 1924.
Observations on the habits and life history of Galerucella nymphaeae (Coleoptera). Transactions of the American Microscopical Society. 43:11-16.. 1924.
Observations on the distribution and life history of Cephalobium microbivorum Cobb and its host, Gryllus assimilis Fabricius. Transactions of the American Microscopical Society. 40:97-115.. 1921.
Observations on the life history and habits of Hydromyza confluens Loew., (Diptera). Annals of the Entomological Society of America. 7:135-147.. 1914.