Name

WAGAI, Rota

Affiliation & Position

Carbon & Nutrient Cycling Division, researcher

Contact

Phone: 029-838-8327 Fax: 029-838-8199
E-mail : rota@afffrc.go.jp

Research Interests

Effect of cultivation and management practices on the short- and long-term dynamics of soil organic matter
Physical and chemical characteristics of organo-mineral associations at aggregate and submicron scales as the factors controlling soil organic matter stabilization/destabilization processes and microbial habitation
Biogeochemical processes that affect soil organic matter and nutrient dynamics in ecosystems

Academic Record

Ph.D.	Ecology and Environmental Sciences, 2005, University of Maine-Orono, ME, USA
M.S.	Forest Science, 1999, Oregon State University, Corvallis, OR
B.S.	Forest Ecology and Management, 1996, University of Wisconsin-Madison, Madison, WI

Publication

Wagai, R., L.M. Mayer, and K. Kitayama (2009) Nature of goccludedh low-density fraction in soil organic matter studies: a critical review. Soil Science and Plant Nutrition 55: 13-25.
Moritz, L.K., C. Liang, R. Wagai, K. Kitayama, and T.C. Balser (2009) Vertical distribution and accumulation of microbial residues in tropical forest soils formed from distinct parent materials. Biogeochemistry. DOI 10.1007/s10533-008-9264-x
Wagai, R., L.M. Mayer, and K. Kitayama (2009) Organic coverage of soil mineral surfaces along an organic matter accretion gradient. Geoderma 149: 152-160.
Ushio, M., R. Wagai, T. Balser, and K. Kitayama (2008) Variations in the soil microbial community composition of a tropical montane forest ecosystem : does tree species matter? Soil Biology and Biochemistry 40: 2699-2702.
Wagai, R., L.M. Mayer, K. Kitayama, and H. Knicker (2008) Climate and parent material controls on organic matter storage in surface soils: A three-pool, density-separation approach. Geoderma 147: 23-33.
Wagai, R. and L.M. Mayer (2007) Significance of hydrous iron oxides for sorptive stabilization of organic carbon in a range of soils. Geochimica et Cosmochimica Acta 71: 25-35.
Mayer, L.M., L.L. Schick, K. Hardy, R. Wagai, and J.F. McCarthy (2004) Organic matter content of small mesopores in sediments and soils. Geochimica et Cosmochimica Acta 68: 3863-3872.
Kitayama, K., S. Aiba, M. Takyu, N. Majalap-Lee, and R. Wagai (2004) Soil phosphorus fractionation and phosphorus-use efficiency of a Bornean tropical montane rain forest during soil ageing with podozolization. Ecosystems 7:259-274.
Wagai, R. and P. Sollins (2002) Biodegradation and regeneration of water-soluble organic carbon in a forest soil: leaching column study. Biology and Fertility of Soils 35:18-26.
Ohno, T., M.Y. Horesh, K. Merritt, and R. Wagai (2002) Calcium and pH effects on salicylic acid phytotoxicity. Allelopathy Journal 9: 19-25.
Norton, S., R. Wagai, T. Navratil, J.M. Kaste, and F.A. Rissberger (2000) Response of a first-order stream in Maine to short-term in-situ acidification. Hydrology and Earth System Sciences 4: 383-391.
Wagai, R., K. Brye, S.T. Gower, J.M. Norman, and L. Bundy (1998) Land use and environmental factors influencing soil surface CO₂ flux and microbial biomass in natural and managed ecosystems in southern Wisconsin. Soil Biology and Biochemistry 30: 1501-1509.