Works by Koba, Keisuke

Results: 74

Nitrogen deposition and forest nitrogen cycling along an urban-rural transect in southern China.

Published in:

Global Change Biology, 2011, v. 17, n. 2, p. 872, doi. 10.1111/j.1365-2486.2010.02283.x

By:

YUNTING FANG;
MUNEOKI YOH;
KOBA, KEISUKE;
WEIXING ZHU;
TAKEBAYASHI, YU;
YIHUA XIAO;
CHUNYI LEI;
JIANGMING MO;
WEI ZHANG;
XIANKAI LU

Publication type:

Article

Nitrate dynamics in natural plants: insights based on the concentration and natural isotope abundances of tissue nitrate.

Published in:

Frontiers in Plant Science, 2014, v. 5, p. 1, doi. 10.3389/fpls.2014.00355

By:

Xue-Yan Liu;
Koba, Keisuke;
Makabe, Akiko;
Cong-Qiang Liu

Publication type:

Article

The natural abundance of 15N in plant and soil-available N indicates a shift of main plant N resources to NO.

Published in:

Rapid Communications in Mass Spectrometry: RCM, 2010, v. 24, n. 7, p. 1001, doi. 10.1002/rcm.4469

By:

Takebayashi, Yu;
Koba, Keisuke;
Sasaki, Yuji;
Fang, Yunting;
Yoh, Muneoki

Publication type:

Article

Isotopomeric analysis of N2O dissolved in a river in the Tokyo metropolitan area.

Published in:

Rapid Communications in Mass Spectrometry: RCM, 2009, v. 23, n. 6, p. 809, doi. 10.1002/rcm.3945

By:

Toyoda, Sakae;
Iwai, Hiroyuki;
Koba, Keisuke;
Yoshida, Naohiro

Publication type:

Article

Nitrogen Fixation in Surface Soils and Vegetation in an Arctic Tundra Watershed: A Key Source of Atmospheric Nitrogen.

Published in:

Arctic, Antarctic & Alpine Research, 2006, v. 38, n. 3, p. 363, doi. 10.1657/1523-0430(2006)38[363:NFISSA]2.0.CO;2

By:

Hobara, Satoru;
McCalley, Carmody;
Koba, Keisuke;
Giblin, Anne E.;
Weiss, Marissa S.;
Gettel, Gretchen M.;
Shaver, Gaius R.

Publication type:

Article

Ecological interpretations of nitrogen isotope ratios of terrestrial plants and soils.

Published in:

Plant & Soil, 2015, v. 396, n. 1/2, p. 1, doi. 10.1007/s11104-015-2542-1

By:

Craine, Joseph;
Brookshire, E.;
Cramer, Michael;
Hasselquist, Niles;
Koba, Keisuke;
Marin-Spiotta, Erika;
Wang, Lixin

Publication type:

Article

Nitrate-use traits of understory plants as potential regulators of vegetation distribution on a slope in a Japanese cedar plantation.

Published in:

Plant & Soil, 2013, v. 362, n. 1/2, p. 119, doi. 10.1007/s11104-012-1257-9

By:

Koyama, Lina;
Hirobe, Muneto;
Koba, Keisuke;
Tokuchi, Naoko

Publication type:

Article

Nitrogen and phosphorus enrichment and balance in forests colonized by cormorants: Implications of the influence of soil adsorption.

Published in:

Plant & Soil, 2005, v. 268, n. 1/2, p. 89, doi. 10.1007/s11104-004-0231-6

By:

Hobara, Satoru;
Koba, Keisuke;
Osono, Takashi;
Tokuchi, Naoko;
Ishida, Akira;
Kameda, Kayoko

Publication type:

Article

Dual N and O isotopes of nitrate in natural plants: first insights into individual variability and organ-specific patterns.

Published in:

Biogeochemistry, 2013, v. 114, n. 1-3, p. 399, doi. 10.1007/s10533-012-9721-4

By:

Liu, Xue-Yan;
Koba, Keisuke;
Takebayashi, Yu;
Liu, Cong-Qiang;
Fang, Yun-Ting;
Yoh, Muneoki

Publication type:

Article

A Non‐steady State Model Based on Dual Nitrogen and Oxygen Isotopes to Constrain Moss Nitrate Uptake and Reduction.

Published in:

Journal of Geophysical Research. Biogeosciences, 2020, v. 125, n. 6, p. 1, doi. 10.1029/2019JG005498

By:

Liu, Xue‐Yan;
Wu, Di;
Song, Xin;
Dong, Yu‐Ping;
Chen, Chong‐Juan;
Song, Wei;
Liu, Cong‐Qiang;
Koba, Keisuke

Publication type:

Article

Mature conifers assimilate nitrate as efficiently as ammonium from soils in four forest plantations.

Published in:

New Phytologist, 2021, v. 229, n. 6, p. 3184, doi. 10.1111/nph.17110

By:

Zhou, Xulun;
Wang, Ang;
Hobbie, Erik A.;
Zhu, Feifei;
Qu, Yuying;
Dai, Luming;
Li, Dejun;
Liu, Xueyan;
Zhu, Weixing;
Koba, Keisuke;
Li, Yinghua;
Fang, Yunting

Publication type:

Article

Arbuscular Mycorrhizal Community in Roots and Nitrogen Uptake Patterns of Understory Trees Beneath Ectomycorrhizal and Non-ectomycorrhizal Overstory Trees.

Published in:

Frontiers in Plant Science, 2021, v. 11, p. N.PAG, doi. 10.3389/fpls.2020.583585

By:

Tatsumi, Chikae;
Hyodo, Fujio;
Taniguchi, Takeshi;
Shi, Weiyu;
Koba, Keisuke;
Fukushima, Keitaro;
Du, Sheng;
Yamanaka, Norikazu;
Templer, Pamela;
Tateno, Ryunosuke

Publication type:

Article

Mechanism of nitrate loss from a forested catchment following a small-scale, natural disturbance.

Published in:

Canadian Journal of Forest Research, 2001, v. 31, n. 8, p. 1326, doi. 10.1139/x01-064

By:

Hobara, Satoro;
Tokuchi, Naoko;
Ote, Nobuhito;
Koba, Keisuke;
Katsuyama, Masanori;
Su-Jin Kim;
Nakamishi, Asami

Publication type:

Article

Carbon autonomy of reproductive shoots of Siberian alder (Alnus hirsuta var. sibirica).

Published in:

Journal of Plant Research, 2003, v. 116, n. 3, p. 183, doi. 10.1007/s10265-003-0085-7

By:

Hasegawa, Shigeaki;
Koba, Keisuke;
Tayasu, Ichiro;
Takeda, Hiroshi;
Haga, Hiroki

Publication type:

Article

Relationships Among pH, Minerals, and Carbon in Soils from Tundra to Boreal Forest Across Alaska.

Published in:

Ecosystems, 2016, v. 19, n. 6, p. 1092, doi. 10.1007/s10021-016-9989-7

By:

Hobara, Satoru;
Kushida, Keiji;
Kim, Yongwon;
Koba, Keisuke;
Lee, Bang-Yong;
Ae, Noriharu

Publication type:

Article

Nitrogen and oxygen isotope effects of tissue nitrate associated with nitrate acquisition and utilisation in the moss Hypnum plumaeforme.

Published in:

Functional Plant Biology, 2012, v. 39, n. 7, p. 598, doi. 10.1071/FP12014

By:

Liu, Xue-Yan;
Koba, Keisuke;
Yoh, Muneoki;
Liu, Cong-Qiang

Publication type:

Article

The 15N natural abundance of the N lost from an N-saturated subtropical forest in southern China.

Published in:

Journal of Geophysical Research. Biogeosciences, 2012, v. 117, n. G2, p. n/a, doi. 10.1029/2010JG001615

By:

Koba, Keisuke;
Fang, Yunting;
Mo, Jiangming;
Zhang, Wei;
Lu, Xiankai;
Liu, Lei;
Zhang, Tao;
Takebayashi, Yu;
Toyoda, Sakae;
Yoshida, Naohiro;
Suzuki, Keisuke;
Yoh, Muneoki;
Senoo, Keishi

Publication type:

Article

Hydrological influences on spatiotemporal variations of δ15N and δ18O of nitrate in a forested headwater catchment in central Japan: Denitrification plays a critical role in groundwater.

Published in:

Journal of Geophysical Research. Biogeosciences, 2010, v. 115, n. G2, p. n/a, doi. 10.1029/2009JG000977

By:

Osaka, Ken'ichi;
Ohte, Nobuhito;
Koba, Keisuke;
Yoshimizu, Chikage;
Katsuyama, Masanori;
Tani, Makoto;
Tayasu, Ichiro;
Nagata, Toshi

Publication type:

Article

Analysis of methane production pathways in a riparian wetland of a temperate forest catchment, using δ13C of pore water CH4 and CO2.

Published in:

Journal of Geophysical Research. Biogeosciences, 2008, v. 113, n. G3, p. n/a, doi. 10.1029/2007JG000647

By:

Itoh, Masayuki;
Ohte, Nobuhito;
Koba, Keisuke;
Sugimoto, Atsuko;
Tani, Makoto

Publication type:

Article

Role of nitrification and denitrification on the nitrous oxide cycle in the eastern tropical North Pacific and Gulf of California.

Published in:

Journal of Geophysical Research. Biogeosciences, 2007, v. 112, n. G2, p. n/a, doi. 10.1029/2006JG000227

By:

Yamagishi, Hiroaki;
Westley, Marian B.;
Popp, Brian N.;
Toyoda, Sakae;
Yoshida, Naohiro;
Watanabe, Shuichi;
Koba, Keisuke;
Yamanaka, Yasuhiro

Publication type:

Article

Hydrologic effects on methane dynamics in riparian wetlands in a temperate forest catchment.

Published in:

Journal of Geophysical Research. Biogeosciences, 2007, v. 112, n. G1, p. n/a, doi. 10.1029/2006JG000240

By:

Itoh, Masayuki;
Ohte, Nobuhito;
Koba, Keisuke;
Katsuyama, Masanori;
Hayamizu, Kana;
Tani, Makoto

Publication type:

Article

Hydrologic controls on nitrous oxide production and consumption in a forested headwater catchment in central Japan.

Published in:

Journal of Geophysical Research. Biogeosciences, 2006, v. 111, n. G1, p. n/a, doi. 10.1029/2005JG000026

By:

Osaka, Ken'ichi;
Ohte, Nobuhito;
Koba, Keisuke;
Katsuyama, Masanori;
Nakajima, Takuo

Publication type:

Article

Uptake Patterns of Glycine, Ammonium, and Nitrate Differ Among Four Common Tree Species of Northeast China.

Published in:

Frontiers in Plant Science, 2019, p. 1, doi. 10.3389/fpls.2019.00799

By:

Zhu, Feifei;
Dai, Luming;
Hobbie, Erik A.;
Koba, Keisuke;
Liu, Xueyan;
Gurmesa, Geshere A.;
Huang, Shaonan;
Li, Shanlong;
Li, Yinghua;
Han, Shijie;
Fang, Yunting

Publication type:

Article

Molecular biological and isotopic biogeochemical prognoses of the nitrification-driven dynamic microbial nitrogen cycle in hadopelagic sediments.

Published in:

Environmental Microbiology, 2013, v. 15, n. 11, p. 3087, doi. 10.1111/1462-2920.12152

By:

Nunoura, Takuro;
Nishizawa, Manabu;
Kikuchi, Tohru;
Tsubouchi, Taishi;
Hirai, Miho;
Koide, Osamu;
Miyazaki, Junichi;
Hirayama, Hisako;
Koba, Keisuke;
Takai, Ken

Publication type:

Article

Biomass production and energy source of thermophiles in a Japanese alkaline geothermal pool.

Published in:

Environmental Microbiology, 2010, v. 12, n. 2, p. 480, doi. 10.1111/j.1462-2920.2009.02089.x

By:

Kimura, Hiroyuki;
Mori, Kousuke;
Nashimoto, Hiroaki;
Hattori, Shohei;
Yamada, Keita;
Koba, Keisuke;
Yoshida, Naohiro;
Kato, Kenji

Publication type:

Article

Episodic increases in nitrate concentrations in streamwater due to the partial dieback of a pine forest in Japan: runoff generation processes control seasonality.

Published in:

Hydrological Processes, 2003, v. 17, n. 2, p. 237, doi. 10.1002/hyp.1121

By:

Ohte, Nobuhito;
Tokuchi, Naoko;
Katsuyama, Masanori;
Hobara, Satoru;
Asano, Yuko;
Koba, Keisuke

Publication type:

Article

Ammonium first: natural mosses prefer atmospheric ammonium but vary utilization of dissolved organic nitrogen depending on habitat and nitrogen deposition.

Published in:

New Phytologist, 2013, v. 199, n. 2, p. 407, doi. 10.1111/nph.12284

By:

Liu, Xue‐Yan;
Koba, Keisuke;
Makabe, Akiko;
Li, Xiao‐Dong;
Yoh, Muneoki;
Liu, Cong‐Qiang

Publication type:

Article

Consequences of microbial diversity in forest nitrogen cycling: diverse ammonifiers and specialized ammonia oxidizers.

Published in:

ISME Journal: Multidisciplinary Journal of Microbial Ecology, 2020, v. 14, n. 1, p. 12, doi. 10.1038/s41396-019-0500-2

By:

Isobe, Kazuo;
Ise, Yuta;
Kato, Hiroyu;
Oda, Tomoki;
Vincenot, Christian E.;
Koba, Keisuke;
Tateno, Ryunosuke;
Senoo, Keishi;
Ohte, Nobuhito

Publication type:

Article

Higher diversity and abundance of denitrifying microorganisms in environments than considered previously.

Published in:

ISME Journal: Multidisciplinary Journal of Microbial Ecology, 2015, v. 9, n. 9, p. 1954, doi. 10.1038/ismej.2015.9

By:

Wei, Wei;
Isobe, Kazuo;
Nishizawa, Tomoyasu;
Zhu, Lin;
Shiratori, Yutaka;
Ohte, Nobuhito;
Koba, Keisuke;
Otsuka, Shigeto;
Senoo, Keishi

Publication type:

Article

Microbial methane production in deep aquifer associated with the accretionary prism in Southwest Japan.

Published in:

ISME Journal: Multidisciplinary Journal of Microbial Ecology, 2010, v. 4, n. 4, p. 531, doi. 10.1038/ismej.2009.132

By:

Kimura, Hiroyuki;
Nashimoto, Hiroaki;
Shimizu, Mikio;
Hattori, Shohei;
Yamada, Keita;
Koba, Keisuke;
Yoshida, Naohiro;
Kato, Kenji

Publication type:

Article

Isotopic Elucidation of Microbial Nitrogen Transformations in Forest Soils.

Published in:

Global Biogeochemical Cycles, 2021, v. 35, n. 12, p. 1, doi. 10.1029/2021GB007070

By:

Shi-Qi Xu;
Xue-Yan Liu;
Zhong-Cong Sun;
Chao-Chen Hu;
Wanek, Wolfgang;
Keisuke Koba

Publication type:

Article

Characterization and production and consumption processes of N2O emitted from temperate agricultural soils determined via isotoponier ratio analysis.

Published in:

Global Biogeochemical Cycles, 2011, v. 25, n. 2, p. GB2008, doi. 10.1029/2009GB003769

By:

Toyoda, Sakae;
Yano, Midori;
Nishimura, Sei-ichi;
Akiyama, Hiroko;
Hayakawa, Atsushi;
Koba, Keisuke;
Sudo, Shigeto;
Yagi, Kazuyuki;
Makabe, Akiko;
Tobari, Yoshifumi;
Ogawa, Nanako O.;
Ohkouchi, Naohiko;
Yamada, Keita;
Yoshida, Naohiro

Publication type:

Article

Seasonal changes and controlling factors of gross N transformation in an evergreen plantation forest in central Japan.

Published in:

Journal of Forest Research, 2014, v. 19, n. 1, p. 77, doi. 10.1007/s10310-013-0391-4

By:

Tokuchi, Naoko;
Yoneda, Satomi;
Ohte, Nobuhito;
Usui, Nobuaki;
Koba, Keisuke;
Kuroiwa, Megumi;
Toda, Hiroto;
Suwa, Yuichi

Publication type:

Article

Soil nitrogen dynamics of forest ecosystems under environmental changes.

Published in:

Journal of Forest Research, 2011, v. 16, n. 5, p. 331, doi. 10.1007/s10310-011-0289-y

By:

Shibata, Hideaki;
Toda, Hiroto;
Inagaki, Yoshiyuki;
Tateno, Ryunosuke;
Koba, Keisuke;
Tange, Takeshi

Publication type:

Article

Gross nitrification rates in four Japanese forest soils: heterotrophic versus autotrophic and the regulation factors for the nitrification.

Published in:

Journal of Forest Research, 2011, v. 16, n. 5, p. 363, doi. 10.1007/s10310-011-0287-0

By:

Kuroiwa, Megumi;
Koba, Keisuke;
Isobe, Kazuo;
Tateno, Ryunosuke;
Nakanishi, Asami;
Inagaki, Yoshiyuki;
Toda, Hiroto;
Otsuka, Shigeto;
Senoo, Keishi;
Suwa, Yuichi;
Yoh, Muneoki;
Urakawa, Rieko;
Shibata, Hideaki

Publication type:

Article

Atmospheric deposition and leaching of nitrogen in Chinese forest ecosystems.

Published in:

Journal of Forest Research, 2011, v. 16, n. 5, p. 341, doi. 10.1007/s10310-011-0267-4

By:

Fang, Yunting;
Gundersen, Per;
Vogt, Rolf D.;
Koba, Keisuke;
Chen, Fusheng;
Chen, Xi Yun;
Yoh, Muneoki

Publication type:

Article

Nitrification and nitrifying microbial communities in forest soils.

Published in:

Journal of Forest Research, 2011, v. 16, n. 5, p. 351, doi. 10.1007/s10310-011-0266-5

By:

Isobe, Kazuo;
Koba, Keisuke;
Otsuka, Shigeto;
Senoo, Keishi

Publication type:

Article

Changes in nitrogen transformation in forest soil representing the climate gradient of the Japanese archipelago.

Published in:

Journal of Forest Research, 2011, v. 16, n. 5, p. 374, doi. 10.1007/s10310-011-0288-z

By:

Shibata, Hideaki;
Urakawa, Rieko;
Toda, Hiroto;
Inagaki, Yoshiyuki;
Tateno, Ryunosuke;
Koba, Keisuke;
Nakanishi, Asami;
Fukuzawa, Karibu;
Yamasaki, Ayaka

Publication type:

Article

Virtual forest: design and evaluation of a walk-through system for forest education.

Published in:

Journal of Forest Research, 2005, v. 10, n. 3, p. 189, doi. 10.1007/s10310-004-0131-x

By:

Abe, Mitsutoshi;
Yoshimura, Tetsuhiko;
Koizumi, Satoshi;
Hasegawa, Naoto;
Osaki, Tomohiro;
Yasukawa, Naoki;
Koba, Keisuke;
Moriya, Kazuyuki;
Sakai, Tetsuro

Publication type:

Article

Development and evaluation of a support system for forest education.

Published in:

Journal of Forest Research, 2005, v. 10, n. 1, p. 43, doi. 10.1007/s10310-004-0099-6

By:

Abe, Mitsutoshi;
Yoshimura, Tetsuhiko;
Yasukawa, Naoki;
Koba, Keisuke;
Moriya, Kazuyuki;
Sakai, Tetsuro

Publication type:

Article

Topographical differences in soil N transformation using15N dilution method along a slope in a conifer plantation forest in Japan.

Published in:

Journal of Forest Research, 2000, v. 5, n. 1, p. 13, doi. 10.1007/BF02762758

By:

Tokuchi, Naoko;
Hirobe, Muneto;
Koba, Keisuke

Publication type:

Article

Isotopocule analysis of biologically produced nitrous oxide in various environments.

Published in:

Mass Spectrometry Reviews, 2017, v. 36, n. 2, p. 135, doi. 10.1002/mas.21459

By:

Toyoda, Sakae;
Yoshida, Naohiro;
Koba, Keisuke

Publication type:

Article

Major contribution of sulfide‐derived sulfur to the benthic food web in a large freshwater lake.

Published in:

Geobiology, 2023, v. 21, n. 5, p. 671, doi. 10.1111/gbi.12569

By:

Onishi, Yuji;
Yamanaka, Toshiro;
Koba, Keisuke

Publication type:

Article

Multipath ecological influence of an iteroparous fish migration from Lake Biwa to an alluvial stream.

Published in:

Freshwater Biology, 2023, v. 68, n. 8, p. 1400, doi. 10.1111/fwb.14112

By:

Kurasawa, Akira;
Onishi, Yuji;
Koba, Keisuke;
Fukushima, Keitaro;
Uno, Hiromi

Publication type:

Article

Heterogeneous Atmospheric Nitrogen Deposition Effects Upon the Nitrate Concentration of Stream Waters in a Forested Mountain Area.

Published in:

Water, Air & Soil Pollution, 2011, v. 216, n. 1-4, p. 105, doi. 10.1007/s11270-010-0519-5

By:

Tabayashi, Yu;
Koba, Keisuke

Publication type:

Article

Nitrogen Isotope Study on Nitrate-Contaminated Groundwater in the Sichuan Basin, China.

Published in:

Water, Air & Soil Pollution, 2007, v. 178, n. 1-4, p. 145, doi. 10.1007/s11270-006-9186-y

By:

Li, Xiaodong;
Masuda, Harue;
Koba, Keisuke;
Zeng, Haiao

Publication type:

Article

Forest Floor Quality and N Transformations in a Temperate Forest Affected by Avian-Derived N Deposition.

Published in:

Water, Air & Soil Pollution, 2001, v. 130, n. 1-4, p. 679, doi. 10.1023/A:1013869115132

By:

Hobara, Satoru;
Osono, Takashi;
Koba, Keisuke;
Tokuchi, Naoko;
Fujiwara, Satomi;
Kameda, Kayoko

Publication type:

Article

Influence of δ18O of water on measurements of δ18O of nitrite and nitrate.

Published in:

Rapid Communications in Mass Spectrometry: RCM, 2021, v. 35, n. 2, p. 1, doi. 10.1002/rcm.8979

By:

Kobayashi, Kanae;
Fukushima, Keitaro;
Onishi, Yuji;
Nishina, Kazuya;
Makabe, Akiko;
Yano, Midori;
Wankel, Scott D.;
Koba, Keisuke;
Okabe, Satoshi

Publication type:

Article

Missing flux from the ocean: isotope revealed an important NOx flux mediated by microbial processes.

Published in:

National Science Review, 2022, v. 9, n. 9, p. 1, doi. 10.1093/nsr/nwac142

By:

Koba, Keisuke

Publication type:

Article

Striped catfish (Pangasianodon hypophthalmus) exploit food sources across anaerobic decomposition- and primary photosynthetic production-based food chains.

Published in:

Scientific Reports, 2023, v. 13, n. 1, p. 1, doi. 10.1038/s41598-023-41209-y

By:

Medo, Ayano;
Ohte, Nobuhito;
Kajitani, Hiroki;
Nose, Takashi;
Manabe, Yuki;
Sugawara, Tatsuya;
Onishi, Yuji;
Goto, Akiko S.;
Koba, Keisuke;
Arai, Nobuaki;
Mitsunaga, Yasushi;
Kume, Manabu;
Nishizawa, Hideaki;
Kojima, Daichi;
Yokoyama, Ayako;
Yamanaka, Toshiro;
Viputhanumas, Thavee;
Mitamura, Hiromichi

Publication type:

Article