A
Akira Watanabe
Researcher at Nagoya University
Publications - 158
Citations - 4102
Akira Watanabe is an academic researcher from Nagoya University. The author has contributed to research in topics: Soil water & Humus. The author has an hindex of 34, co-authored 155 publications receiving 3849 citations. Previous affiliations of Akira Watanabe include Nagoya Institute of Technology.
Papers
More filters
Journal ArticleDOI
Comparison of two methods of preparation of humic and fulvic acids, IHSS method and NAGOYA method
TL;DR: In this article, two methods for preparing soil humus samples, NAGOYA (Nagoya University) method and IHSS (International Humic Substances Society) method, were compared using A-horizons of an acid brown forest soil and an ando soil.
Journal ArticleDOI
Evaluation of origins of CH4 carbon emitted from rice paddies
TL;DR: In this paper, a pot experiment was conducted using 13C-enriched soil sample and rice straw tracers as tracers to estimate the contribution of each carbon source to CH4 emission.
Journal ArticleDOI
Contribution of plant-derived carbon to soil microbial biomass dynamics in a paddy rice microcosm
TL;DR: In this paper, the seasonal dynamics of microbial biomass C (MBC) was related to the release of organic substance from rice roots, and the estimated total contribution of photosynthesized 13C amounted to 91 mg C plant-1, corresponding to 28% of total MBC at the end of the season or a 100% increase in MBC over the growing season.
Journal ArticleDOI
Dissolved Organic Matter in Headwater Streams: Compositional Variability across Climatic Regions of North America
Rudolf Jaffé,Youhei Yamashita,Nagamitsu Maie,William T. Cooper,Thorsten Dittmar,Walter K. Dodds,Jeremy B. Jones,T. Myoshi,Jorge R. Ortiz-Zayas,David C. Podgorski,Akira Watanabe +10 more
TL;DR: In this article, the authors applied a multi-method analytical approach in an attempt to assess molecular characteristics of dissolved organic matter (DOM) and ultrafiltered DOM (UDOM) in headwater streams from different climatic regions in North America.
Journal ArticleDOI
Chemical characteristics of dissolved organic nitrogen in an oligotrophic subtropical coastal ecosystem
Nagamitsu Maie,Kathleen Parish,Akira Watanabe,Heike Knicker,Ronald Benner,Tomonori Abe,Karl Kaiser,Rudolf Jaffé +7 more
TL;DR: In this article, a combination of techniques, including 15 N cross-polarization magic angle spinning nuclear magnetic resonance (15 N CPMAS NMR) and X-ray photoelectron spectroscopy (XPS), were used to analyze the N components of UDOM.