| Ecological interpretations of nitrogen isotope ratios of terrestrial plants and soils JM Craine, ENJ Brookshire, MD Cramer, NJ Hasselquist, K Koba, ... Plant and Soil 396, 1-26, 2015 | 543 | 2015 |
| Hadal biosphere: insight into the microbial ecosystem in the deepest ocean on Earth T Nunoura, Y Takaki, M Hirai, S Shimamura, A Makabe, O Koide, ... Proceedings of the National Academy of Sciences 112 (11), E1230-E1236, 2015 | 261 | 2015 |
| Natural 13C and 15N abundance of field-collected fungi and their ecological implications A Kohzu, T Yoshioka, T Ando, M Takahashi, K Koba, E Wada The New Phytologist 144 (2), 323-330, 1999 | 236 | 1999 |
| Nitrogen deposition and forest nitrogen cycling along an urban–rural transect in southern China Y Fang, M Yoh, K Koba, W Zhu, YU Takebayashi, Y Xiao, C Lei, J Mo, ... Global Change Biology 17 (2), 872-885, 2011 | 235 | 2011 |
| Higher diversity and abundance of denitrifying microorganisms in environments than considered previously W Wei, K Isobe, T Nishizawa, L Zhu, Y Shiratori, N Ohte, K Koba, S Otsuka, ... The ISME journal 9 (9), 1954-1965, 2015 | 200 | 2015 |
| Microbial denitrification dominates nitrate losses from forest ecosystems Y Fang, K Koba, A Makabe, C Takahashi, W Zhu, T Hayashi, AA Hokari, ... Proceedings of the National Academy of Sciences 112 (5), 1470-1474, 2015 | 193 | 2015 |
| Intermittent denitrification: the application of a 15N natural abundance method to a forested ecosystem K Koba, N Tokuchi, E Wada, T Nakajima, G Iwatsubo Geochimica et Cosmochimica Acta 61 (23), 5043-5050, 1997 | 170 | 1997 |
| Convergence of soil nitrogen isotopes across global climate gradients JM Craine, AJ Elmore, L Wang, L Augusto, WT Baisden, ENJ Brookshire, ... Scientific reports 5 (1), 8280, 2015 | 168 | 2015 |
| Isotopocule analysis of biologically produced nitrous oxide in various environments S Toyoda, N Yoshida, K Koba Mass Spectrometry Reviews 36 (2), 135-160, 2017 | 154 | 2017 |
| Anthropogenic imprints on nitrogen and oxygen isotopic composition of precipitation nitrate in a nitrogen-polluted city in southern China YT Fang, K Koba, XM Wang, DZ Wen, J Li, Y Takebayashi, XY Liu, M Yoh Atmospheric Chemistry and Physics 11 (3), 1313-1325, 2011 | 145 | 2011 |
| Role of nitrification and denitrification on the nitrous oxide cycle in the eastern tropical North Pacific and Gulf of California H Yamagishi, MB Westley, BN Popp, S Toyoda, N Yoshida, S Watanabe, ... Journal of Geophysical Research: Biogeosciences 112 (G2), 2007 | 141 | 2007 |
| Characterization and production and consumption processes of N2O emitted from temperate agricultural soils determined via isotopomer ratio analysis S Toyoda, M Yano, S Nishimura, H Akiyama, A Hayakawa, K Koba, ... Global Biogeochemical Cycles 25 (2), 2011 | 140 | 2011 |
| Water utilization of natural and planted trees in the semiarid desert of Inner Mongolia, China N Ohte, K Koba, K Yoshikawa, A Sugimoto, N Matsuo, N Kabeya, L Wang Ecological Applications 13 (2), 337-351, 2003 | 123 | 2003 |
| Natural abundance of nitrogen‐15 in a forest soil K Koba, N Tokuchi, T Yoshioka, EA Hobbie, G Iwatsubo Soil Science Society of America Journal 62 (3), 778-781, 1998 | 115 | 1998 |
| High abundance of ammonia-oxidizing archaea in acidified subtropical forest soils in southern China after long-term N deposition K Isobe, K Koba, Y Suwa, J Ikutani, Y Fang, M Yoh, J Mo, S Otsuka, ... FEMS Microbiology Ecology 80 (1), 193-203, 2012 | 113 | 2012 |
| Atmospheric deposition and leaching of nitrogen in Chinese forest ecosystems Y Fang, P Gundersen, RD Vogt, K Koba, F Chen, XY Chen, M Yoh Journal of Forest Research 16 (5), 341-350, 2011 | 109 | 2011 |
| Nitrate is an important nitrogen source for Arctic tundra plants XY Liu, K Koba, LA Koyama, SE Hobbie, MS Weiss, Y Inagaki, GR Shaver, ... Proceedings of the National Academy of Sciences 115 (13), 3398-3403, 2018 | 104 | 2018 |
| Biogeochemistry of nitrous oxide in groundwater in a forested ecosystem elucidated by nitrous oxide isotopomer measurements K Koba, K Osaka, Y Tobari, S Toyoda, N Ohte, M Katsuyama, N Suzuki, ... Geochimica et Cosmochimica Acta 73 (11), 3115-3133, 2009 | 103 | 2009 |
| Nitrogen fixation in surface soils and vegetation in an Arctic tundra watershed: a key source of atmospheric nitrogen S Hobara, C McCalley, K Koba, AE Giblin, MS Weiss, GM Gettel, ... Arctic, Antarctic, and Alpine Research 38 (3), 363-372, 2006 | 102 | 2006 |
| Natural15 N Abundance of Plants and Soil N in a Temperate Coniferous Forest K Koba, M Hirobe, L Koyama, A Kohzu, N Tokuchi, KJ Nadelhoffer, ... Ecosystems 6, 457-469, 2003 | 96 | 2003 |
Akiko MakabeJAMSTECVerified email at jamstec.go.jp
