SFA Faculty Listing

Robert Bayer, Animal Science
Timothy Bowden, Aquaculture
Stephanie Burnett, Horticulture
Beth Calder, Food Science
Mary Ellen Camire, Food Science
Robert Causey, Animal Science
Susan Erich, Plant and Soil Chemistry
Eric Gallandt, Weed Ecology
Jianjun (Jay) Hao, Plant Pathology
Mark Hutton, Vegetable Crops
Pauline Kamath, Animal Health
Dorothy Klimis-Zacas, Clinical Nutrition
Anne Lichtenwalner, Animal Science
Ellen Mallory, Sustainable Agriculture
David Marcinkowski, Animal Science
Renae Moran, Pomology
Angela Myracle, Human Nutrition
Balu Nayak, Food Science
Tsutomu Ohno, Soil Chemistry
Brian Perkins, Food Science
Jennifer Perry, Food Microbiology
Bryan Peterson, Horticulture
Greg Porter, Crop Ecology
Juan Romero, Animal Nutrition
Marianne Sarrantonio, Sustainable Agriculture
Denise Skonberg, Food Science
Martin Stokes, Animal Science
Susan Sullivan, Human Nutrition
Mona Therrien, Human Nutrition
James Weber, Animal Science
Adrienne White, Human Nutrition
David Yarborough, Horticulture
Kate Yerxa, Human Nutrition

Tsutomu Ohno

Professor of Soil ChemistryPortrait1-166x250

Degree: Ph. D. 1983, Cornell University
Phone: 207.581.2975
Email: ohno@maine.edu
Location: 108 Deering Hall

Website: Full Publication Listing;
Book List; ResearchGate site

Professional Interests: Organic matter chemistry, phosphorus soil chemistry, ion cyclotron mass spectrometry

Teaching: PSE 469 Soil Microbiology, PSE 546 Chemistry of Soils, PSE 580/581 Scientific Communication I/II

Research: My current research efforts focus on (1) chemically characterizing soil organic matter using ultrahigh resolution mass spectrometry and (2) determining the molecular-level chemical mechanisms governing dissolved organic matter and phosphorus reactions with soil mineral surfaces. Interest in carbon cycling in soils has recently increased greatly due to the effects of both carbon dioxide and methane on global climate. Carbon sequestration in soils has been proposed as a strategy to moderate increasing levels of both gasses in the atmosphere. Understanding the chemistry of soil organic matter is important for understanding the factors that stabilize carbon in soils. In addition, this knowledge is key to understanding biogeochemical mechanisms of phosphorus cycling through both agricultural and forested ecosystems. These studies will contribute to a more accurate understanding of how management systems can be used to enhance the bio-availability of phosphorus and reduce adverse environmental impacts due to excessive phosphorus loading to soils.

Recent Publications [available through ResearchGate]:

Chassé, A.W; Ohno. T.  2016. Higher molecular mass organic matter molecules compete with orthophosphate for adsorption to iron (oxy)hydroxide. Environ. Sci. Technol. (in press)

Ohno, T.; Sleighter, R.L.; Hatcher, P.G.  2016. Comparative study of organic matter chemical characterization using negative and positive mode electrospray ionization ultrahigh resolution mass spectrometry.  Anal. Bioanal. Chem. 408:2497-2504.

Boeira de Oliveira , C.M.; Erich, M.S.; Gatiboni, L.C.; Ohno, T. 2015. Phosphorus fractions and organic matter chemistry under different land use on humic Cambisols in Southern Brazil. Geoderma Region. 5:140-149.

Chassé, A.W.; Ohno, T.; Higgins, S.R.; Amirbahman, A.; Yildirim, N.; Parr, T.B.  2015. Chemical force spectroscopy evidence supporting the layer-by-layer model of organic matter binding to iron (oxy)hydroxide mineral surfaces.  Environ. Sci. Technol. 49:9733-9741.

Parr, T.B.; Cronan, C.S.; Ohno, T.; Findlay, S.E.G.; Smith, S.M.C.; Simon, K.S. 2015. Urbanization changes the composition and bioavailability of dissolved organic matter in headwater streams. Limnol. Oceanogr. 60:885-900.