Researcher Information
researchmap URL
Research Interests
Research Areas
Research History
- Oct. 2017 - Present
Japan Agency for Marine-Earth Science and Technology, Department of Biogeochemistry, Scientist - Apr. 2016 - Sep. 2017
ETH Zürich, Department of Earth Sciences, JSPS Overseas Research Fellow - Apr. 2013 - Mar. 2016
Japan Agency for Marine-Earth Science and Technology, Department of Biogeochemistry, JSPS Postdoctoral Fellow (PD) - Apr. 2011 - Mar. 2013
Kyoto University, Center for Ecological Research, Postdoctoral Fellow - Apr. 2008 - Mar. 2011
Kyoto University, Center for Ecological Research, JSPS Research Fellow (DC1) - Jan. 2010 - Mar. 2010
Yale University, School of Forestry & Environmental Studies, Visiting Fellow
Education
Research activity information
Papers
- Kohei Sakamoto; Chisato Yoshikawa; Nanako O. Ogawa; Yutaka Osada; Naoto F. Ishikawa; Shin-ichi Ito; Yusuke Yokoyama; Naohiko Ohkouchi
Estimating the migration pathway of chub mackerel using a state-space model with nitrogen isoscapes and compound-specific nitrogen isotope analysis
Progress in Oceanography, May 2026
245, 103729
[Reviewed] - Satoshi Furota; Naoto F. Ishikawa; Nanako O. Ogawa; Toshio Furota; Naohiko Ohkouchi
Tracing terrestrial nitrogen contributions to the salt marsh food web of the Obitsu River estuary in Tokyo Bay using compound-specific δ15N analysis of amino acids
Progress in Earth and Planetary Science, 09 Mar. 2026
13, 1, 18
[Reviewed] - Yuchen Sun; Naoto F. Ishikawa; Nanako O. Ogawa; Yoshinori Takano; Naohiko Ohkouchi
Carbon isotopic changes of 16 proteinogenic amino acids during trophic transfer in a cultured marine consumer
Progress in Earth and Planetary Science, 28 Jan. 2026
13, 1, 9
[Reviewed] - Takumi Tsutaya; Natsumi Aruga; Naoto F. Ishikawa; Yoko Sasaki; Haruka Kitayama; Minoru Yoneda; Nana O. Ogawa; Naohiko Ohkouchi; Chie Hashimoto
Carbon and Nitrogen Stable Isotopic Profiling of Chimpanzees and Monkeys in Kalinzu Forest Reserve, Uganda
American Journal of Primatology, Jan. 2026
88, e70114
[Reviewed] - Nanako O. Ogawa; Yoshinori Takano; Yu Itahashi; Naoto F. Ishikawa; Naohiko Ohkouchi
Working standards and analytical framework for CSIA: isotopic composition (δ13C, δ15N, and δ34S) of 21 amino acids and 7 nucleobases
Progress in Earth and Planetary Science, 06 Dec. 2025
12, 1, 111
[Reviewed] - Masanori Kaneko; Yoshinori Takano; Yuta Isaji; Nanako O. Ogawa; Yoshito Chikaraishi; Naoto F. Ishikawa; Hiroyuki Imachi; Yoshihiro Takaki; Miyuki Ogawara; Fumie Kabashima; Martin Krüger; Naohiko Ohkouchi
Nitrogen and carbon flows in a microbial mat involving anaerobic oxidation of methane in northwestern Black Sea: perspectives from nitrogen and carbon isotopic composition of coenzyme F430 and its biosynthetic pathway
Progress in Earth and Planetary Science, 06 Dec. 2025
12, 1, 110
[Reviewed] - Yu Itahashi; Yoshinori Takano; Yoshito Chikaraishi; Nanako O. Ogawa; Naoto F. Ishikawa; Naohiko Ohkouchi; Masako Yamane; Yusuke Yokoyama; Minoru Yoneda
Purification of hydroxyproline for small-scale radiocarbon dating verified using archaeological bone collagen
Progress in Earth and Planetary Science, 01 Dec. 2025
12, 1, 107
[Reviewed] - Chiho Sukigara; Taichi Yokokawa; Akiko Makabe; Kaho Mori; Yu Nakajima; Shinya Kouketsu; Eiji Tasumi; Masumi Hasegawa-Takano; Naoto F. Ishikawa; Chunqi Jiang; Siyu Jiang; Riku Miyase; Satoshi Nishino; Youta Sugai; Kento Tominaga; Hiroshi Uchida; Yu Yoshida; Susumu Yoshizawa; Shinsuke Kawagucci
Diel and daily changes of water mass structure and biogeochemical processes in early spring in the western subtropical North Pacific
Progress in Earth and Planetary Science, 20 Nov. 2025
12, 1, 105
[Reviewed] - Thomas M. Blattmann; Yuchen Sun; Nanako O. Ogawa; Yoshinori Takano; Negar Haghipour; Naoto F. Ishikawa; Timothy I. Eglinton; Naohiko Ohkouchi
Chromatographic isolation for performing enantiomer-specific radiocarbon analysis (ESRA): first method development for individual L- and D-amino acids
Progress in Earth and Planetary Science, 29 Sep. 2025
12, 1, 84
[Reviewed] - Chisato Yoshikawa; Nanako O. Ogawa; Naoto F. Ishikawa; Michio Yoneda; Ryuji Yukami; Shin-ichi Ito; Naohiko Ohkouchi
Nitrogen and carbon isotopic relationships in the diet and eye lenses of chub mackerel revealed in a laboratory rearing experiment
Progress in Earth and Planetary Science, 23 Jul. 2025
12, 1, 57
[Reviewed] - Hidetaka Nomaki; Yoshiyuki Ishitani; Satoshi Okada; Noriyuki Isobe; Naoto F. Ishikawa
A Scavenging Behavior of Cyclammina cancellata (Foraminifera, Rhizaria) on a Crustacean Carcass: Amino Acid Nitrogen Isotope and Microbiome Analyses
Marine Ecology, May 2025
46, 3, e70023
[Reviewed]
Last - Toshihiro Yoshimura; Naoto F. Ishikawa; Nanako O. Ogawa; Soichiro Kusaka; Shigeyuki Wakaki; Tsuyoshi Ishikawa; Kazuya Nagaishi; Masanori Kaneko; Yuta Isaji; Yoshito Chikaraishi; Naohiko Ohkouchi
Magnesium isotopic variation in marine fish organs
Progress in Earth and Planetary Science, 06 Mar. 2025
12, 1, 19
[Reviewed] - Yuta Isaji; Koji Sugie; Naoto F. Ishikawa; Nanako O. Ogawa; Kazuhiko Matsumoto; Chisato Yoshikawa; Hajime Obata; Makio C. Honda; Naohiko Ohkouchi
Distributions of heme B and its implications on Fe biogeochemistry in the eastern Indian Ocean and the western North Pacific Ocean
Progress in Earth and Planetary Science, 11 Feb. 2025
12, 1, 14
[Reviewed] - Naoto F. Ishikawa; Yoshitoshi Uehara; Takuya Ishida; Tohru Ikeya; Satoshi Asano; Chia-Ying Ko; Tomoya Iwata; Ichiro Tayasu; Naohiko Ohkouchi; Noboru Okuda
Spatiotemporal variations in integrated trophic positions of stream macroinvertebrate communities
Progress in Earth and Planetary Science, 03 Jan. 2025
12, 1, 2
[Reviewed]
Lead, Corresponding - Yuchen Sun; Thomas M. Blattmann; Yoshinori Takano; Nanako O. Ogawa; Yuta Isaji; Naoto F. Ishikawa; Naohiko Ohkouchi
Enantiomer-Specific Stable Carbon and Nitrogen Isotopic Analyses of Underivatized Individual l- and d-Amino Acids by HPLC + HPLC Separation and Nano-EA/IRMS
Analytical Chemistry, 15 Nov. 2024
96, 47, 18664, 18671
[Reviewed] - Miyabi Nakabayashi; Takumi Tsutaya; Abdul Hamid Ahmad; Yoko Sasaki; Nanako O. Ogawa; Naoto F. Ishikawa; Naohiko Ohkouchi
Dietary partitioning in sympatric Paradoxurinae civets in Borneo suggested by compound-specific nitrogen isotope analysis of amino acids
Progress in Earth and Planetary Science, 02 Oct. 2024
11, 1, 53
[Reviewed] - Emi Arai; Masaru Hasegawa; Chikage Yoshimizu; Naoto F Ishikawa; Naohiko Ohkouchi; Ichiro Tayasu
Divergent ornamentation within a single population of the barn swallow
Journal of Evolutionary Biology, 09 Sep. 2024
37, 11, 1264, 1277
[Reviewed] - Kai Nils Nitzsche; Toshihiro Yoshimura; Naoto F. Ishikawa; Hodaka Kawahata; Nanako O. Ogawa; Katsuhiko Suzuki; Daisuke Araoka; Naohiko Ohkouchi
Zinc isotope fractionation during the sorption of Zn to minerals and organic matter in sediment cores affected by anthropogenic pollution
Applied Geochemistry, Aug. 2024
169, 106047
[Reviewed] - Kai Nils Nitzsche; Naoto F Ishikawa; Toshihiro Yoshimura; Hiroto Kajita; Hodaka Kawahata; Nanako O Ogawa; Hisami Suga; Naohiko Ohkouchi
Historical trend of polycyclic aromatic hydrocarbons in a sediment core from Osaka Bay during the Meghalayan
The Holocene, 16 Mar. 2024
34, 7, 860, 869
[Reviewed] - NF Ishikawa; C Chen; R Hashimoto; NO Ogawa; D Uyeno; H Nomaki
Amino acid nitrogen isotopic compositions show seep copepods gain nutrition from host animals
Marine Ecology Progress Series, 25 Jan. 2024
727, 81, 90
[Reviewed]
Lead, Corresponding - Naoto F. Ishikawa; Ayaka Takashima; Hirokazu Maruoka; Michio Kondoh
Integrated trophic position as a proxy for food‐web complexity
Methods in Ecology and Evolution, Jan. 2024
15, 1, 164, 177
[Reviewed]
Lead, Corresponding - Yuchen Sun; Nanako O. Ogawa; Naoto F. Ishikawa; Thomas M. Blattmann; Yoshinori Takano; Naohiko Ohkouchi
Application of a porous graphitic carbon column to carbon and nitrogen isotope analysis of underivatized individual amino acids using high‐performance liquid chromatography coupled with elemental analyzer/isotope ratio mass spectrometry
Rapid Communications in Mass Spectrometry, 02 Aug. 2023
37, 17, e9602
[Reviewed] - Naoto F. Ishikawa; Kazuaki Tadokoro; Jun Matsubayashi; Naohiko Ohkouchi
Biomass Pyramids of Marine Mesozooplankton Communities as Inferred From Their Integrated Trophic Positions
Ecosystems, Jan. 2023
26, 217, 231
[Reviewed]
Lead, Corresponding - Jun Matsubayashi; Katsuya Kimura; Naohiko Ohkouchi; Nanako O. Ogawa; Naoto F. Ishikawa; Yoshito Chikaraishi; Yuichi Tsuda; Hiroshi Minami
Using geostatistical analysis for simultaneous estimation of isoscapes and ontogenetic shifts in isotope ratios of highly migratory marine fish
Frontiers in Marine Science, 28 Nov. 2022
9, 1049056
[Reviewed] - Kai Nils Nitzsche; Toshihiro Yoshimura; Naoto F. Ishikawa; Hiroto Kajita; Hodaka Kawahata; Nanako O. Ogawa; Katsuhiko Suzuki; Yusuke Yokoyama; Naohiko Ohkouchi
Metal contamination in a sediment core from Osaka Bay during the last 400 years
Progress in Earth and Planetary Science, Oct. 2022
9, 1, 58
[Reviewed] - Naoto F. Ishikawa; Nanako O. Ogawa; Yuchen Sun; Yoshito Chikaraishi; Yoshinori Takano; Naohiko Ohkouchi
Integrative assessment of amino acid nitrogen isotopic composition in biological tissue samples determined by GC/C/IRMS, LC × EA/IRMS, and LC × GC/C/IRMS
Limnology and Oceanography: Methods, 19 Jul. 2022
20, 9, 531, 542
[Reviewed]
Lead, Corresponding - Yuta Isaji; C. Yoshikawa; N. O. Ogawa; K. Matsumoto; A. Makabe; S. Toyoda; N. F. Ishikawa; H. Ogawa; H. Saito; M. C. Honda; N. Ohkouchi
Nitrogen Sources for Phytoplankton in the Eastern Indian Ocean Determined From δ 15 N of Chlorophyll a and Divinylchlorophyll a
Geochemistry, Geophysics, Geosystems, 14 Mar. 2022
23, 4, e2021GC010057
[Reviewed] - Yota Harada; Shin-ichi Ito; Nanako O. Ogawa; Chisato Yoshikawa; Naoto F. Ishikawa; Michio Yoneda; Naohiko Ohkouchi
Compound-Specific Nitrogen Isotope Analysis of Amino Acids in Eye Lenses as a New Tool to Reconstruct the Geographic and Trophic Histories of Fish
Frontiers in Marine Science, 03 Feb. 2022
8, 796532
[Reviewed] - Kai Nils Nitzsche; Toshihiro Yoshimura; Naoto F. Ishikawa; Nanako O. Ogawa; Katsuhiko Suzuki; Naohiko Ohkouchi
Trace metal geochemical and Zn stable isotope data as tracers for anthropogenic metal contributions in a sediment core from Lake Biwa, Japan
Applied Geochemistry, Nov. 2021
134, 105107, 105107
[Reviewed] - Naoto F. Ishikawa; Nanako O. Ogawa; Yoshito Chikaraishi; Moto-omi Yamaguchi; Katsunori Fujikura; Yosuke Miyairi; Yusuke Yokoyama; Toshi Nagata; Naohiko Ohkouchi
Influences of Ocean Currents on the Diets of Demersal Fish Communities in the Western North Pacific Revealed by Their Muscle Carbon and Nitrogen Isotopic Compositions
Frontiers in Marine Science, 05 May 2021
8, 641282
[Reviewed]
Lead, Corresponding - Naoto F. Ishikawa; Jacques C. Finlay; Hiromi Uno; Nanako O. Ogawa; Naohiko Ohkouchi; Ichiro Tayasu; Mary E. Power
Combined use of radiocarbon and stable carbon isotopes for the source mixing model in a stream food web
Limnology and Oceanography, Nov. 2020
65, 11, 2688, 2696
[Reviewed]
Lead, Corresponding - Yuchen Sun; Naoto F. Ishikawa; Nanako O. Ogawa; Hodaka Kawahata; Yoshinori Takano; Naohiko Ohkouchi
A method for stable carbon isotope measurement of underivatized individual amino acids by multi‐dimensional high‐performance liquid chromatography and elemental analyzer/isotope ratio mass spectrometry
Rapid Communications in Mass Spectrometry, Jul. 2020
34, 20, e8885
[Reviewed] - Thomas M. Blattmann; Naoto F. Ishikawa
Theoretical Amino Acid-Specific Radiocarbon Content in the Environment: Hypotheses to Be Tested and Opportunities to Be Taken
Frontiers in Marine Science, 05 May 2020
7, 302
[Reviewed]
Last, Corresponding - Jun Matsubayashi; Yutaka Osada; Kazuaki Tadokoro; Yoshiyuki Abe; Atsushi Yamaguchi; Kotaro Shirai; Kentaro Honda; Chisato Yoshikawa; Nanako O Ogawa; Naohiko Ohkouchi; Naoto F Ishikawa; Toshi Nagata; Hiroomi Miyamoto; Shigeto Nishino; Ichiro Tayasu
Tracking long-distance migration of marine fishes using compound-specific stable isotope analysis of amino acids.
Ecology Letters, 24 Mar. 2020
23, 5, 881, 890
[Reviewed] - Thomas M. Blattmann; Daniel B. Montluçon; Negar Haghipour; Naoto F. Ishikawa; Timothy I. Eglinton
Liquid Chromatographic Isolation of Individual Amino Acids Extracted From Sediments for Radiocarbon Analysis
Frontiers in Marine Science, Mar. 2020
7
[Reviewed] - Naoto F. Ishikawa; David Butman; Peter A. Raymond
Radiocarbon age of different photoreactive fractions of freshwater dissolved organic matter
Organic Geochemistry, Sep. 2019
135, 11, 15
[Reviewed]
Lead, Corresponding - N. Haghipour; B. Ausin; M. O. Usman; N. Ishikawa; L. Wacker; C. Welte; K. Ueda; T. I. Eglinton
Compound-Specific Radiocarbon Analysis by Elemental Analyzer–Accelerator Mass Spectrometry: Precision and Limitations
Analytical Chemistry, 05 Feb. 2019
91, 3, 2042, 2049
[Reviewed] - Chia-Ying Ko; Tomoya Iwata; Jun-Yi Lee; Aya Murakami; Junichi Okano; Naoto F. Ishikawa; Yoichiro Sakai; Ichiro Tayasu; Masayuki Itoh; Uhram Song; Hiroyuki Togashi; Shinich Nakano; Nobuhito Ohte; Noboru Okuda
Assessing alpha and beta diversities of benthic macroinvertebrates and their environmental drivers between watersheds with different levels of habitat transformation in Japan
Marine and Freshwater Research, 2019
70, 4, 504, 512
[Reviewed] - S. L. McCallister; N. F. Ishikawa; D. N. Kothawala
Biogeochemical tools for characterizing organic carbon in inland aquatic ecosystems
Limnology and Oceanography Letters, Dec. 2018
3, 6, 444, 457
[Reviewed], [Invited]
Corresponding - Naoto F. Ishikawa; Yu Itahashi; Thomas M. Blattmann; Yoshinori Takano; Nanako O. Ogawa; Masako Yamane; Yusuke Yokoyama; Toshi Nagata; Minoru Yoneda; Negar Haghipour; Timothy I. Eglinton; Naohiko Ohkouchi
Improved Method for Isolation and Purification of Underivatized Amino Acids for Radiocarbon Analysis
Analytical Chemistry, 16 Oct. 2018
90, 20, 12035, 12041
[Reviewed]
Lead, Corresponding - Naoto F. Ishikawa; Yoshito Chikaraishi; Yoshinori Takano; Yoko Sasaki; Yuko Takizawa; Masashi Tsuchiya; Ichiro Tayasu; Toshi Nagata; Naohiko Ohkouchi
A new analytical method for determination of the nitrogen isotopic composition of methionine: Its application to aquatic ecosystems with mixed resources
Limnology and Oceanography: Methods, Sep. 2018
16, 9, 607, 620
[Reviewed]
Lead, Corresponding - Yoshikazu Kato; Michio Kondoh; Naoto F. Ishikawa; Hiroyuki Togashi; Yukihiro Kohmatsu; Mayumi Yoshimura; Chikage Yoshimizu; Takashi F. Haraguchi; Yutaka Osada; Nobuhito Ohte; Naoko Tokuchi; Noboru Okuda; Takeshi Miki; Ichiro Tayasu
Using food network unfolding to evaluate food–web complexity in terms of biodiversity: theory and applications
Ecology Letters, 01 Jul. 2018
21, 7, 1065, 1074
[Reviewed] - Naoto F. Ishikawa; Hideyuki Doi; Jacques C. Finlay
Global dataset for carbon and nitrogen stable isotope ratios of lotic periphyton
Ecological Research, 28 May 2018
33, 6, 1089
[Reviewed]
Lead, Corresponding - Naoto F. Ishikawa
Use of compound-specific nitrogen isotope analysis of amino acids in trophic ecology: assumptions, applications, and implications
Ecological Research, 25 May 2018
33, 5, 825, 837
[Reviewed], [Invited]
Lead, Last, Corresponding - Naoto F. Ishikawa; Yoshito Chikaraishi; Naohiko Ohkouchi; Aya R. Murakami; Ichiro Tayasu; Hiroyuki Togashi; Jun-ichi Okano; Yoichiro Sakai; Tomoya Iwata; Michio Kondoh; Noboru Okuda
Integrated trophic position decreases in more diverse communities of stream food webs
Scientific Reports, Dec. 2017
7, 1, 2130
[Reviewed]
Lead, Corresponding - Naoto F. Ishikawa; Fumio Hayashi; Yoko Sasaki; Yoshito Chikaraishi; Naohiko Ohkouchi
Trophic discrimination factor of nitrogen isotopes within amino acids in the dobsonfly Protohermes grandis (Megaloptera: Corydalidae) larvae in a controlled feeding experiment
Ecology and Evolution, Mar. 2017
7, 6, 1674, 1679
[Reviewed]
Lead, Corresponding - Naoto F. Ishikawa; Hiroyuki Togashi; Yoshikazu Kato; Mayumi Yoshimura; Yukihiro Kohmatsu; Chikage Yoshimizu; Nanako O. Ogawa; Nobuhito Ohte; Naoko Tokuchi; Naohiko Ohkouchi; Ichiro Tayasu
Terrestrial-aquatic linkage in stream food webs along a forest chronosequence: multi-isotopic evidence
Ecology, May 2016
97, 5, 1146, 1158
[Reviewed]
Lead, Corresponding - N. F. Ishikawa; M. Yamane; H. Suga; N. O. Ogawa; Y. Yokoyama; N. Ohkouchi
Chlorophyll a-specific Δ14C, δ13C and δ15N values in stream periphyton: implications for aquatic food web studies
Biogeosciences, 26 Nov. 2015
12, 22, 6781, 6789
Lead, Corresponding - Naoto F Ishikawa; Ichiro Tayasu; Masako Yamane; Yusuke Yokoyama; Saburo Sakai; Naohiko Ohkouchi
Sources of Dissolved Inorganic Carbon in Two Small Streams with Different Bedrock Geology: Insights from Carbon Isotopes
Radiocarbon, 2015
57, 3, 439, 448
[Reviewed]
Lead, Corresponding - Naoto F. Ishikawa; Yoshikazu Kato; Hiroyuki Togashi; Mayumi Yoshimura; Chikage Yoshimizu; Noboru Okuda; Ichiro Tayasu
Stable nitrogen isotopic composition of amino acids reveals food web structure in stream ecosystems
Oecologia, Jul. 2014
175, 3, 911, 922
[Reviewed]
Lead, Corresponding - Yoshito Chikaraishi; Shawn A. Steffan; Nanako O. Ogawa; Naoto F. Ishikawa; Yoko Sasaki; Masashi Tsuchiya; Naohiko Ohkouchi
High‐resolution food webs based on nitrogen isotopic composition of amino acids
Ecology and Evolution, Jun. 2014
4, 12, 2423, 2449
[Reviewed] - Naoto F. Ishikawa; Masao Uchida; Yasuyuki Shibata; Ichiro Tayasu
Carbon storage reservoirs in watersheds support stream food webs via periphyton production
Ecology, May 2014
95, 5, 1264, 1271
[Reviewed]
Lead, Corresponding - Naoto F. Ishikawa; Fujio Hyodo; Ichiro Tayasu
Use of carbon-13 and carbon-14 natural abundances for stream food web studies
Ecological Research, Sep. 2013
28, 5, 759, 769
[Reviewed]
Lead, Corresponding - Naoto F. Ishikawa; Hideyuki Doi; Jacques C. Finlay
Global meta-analysis for controlling factors on carbon stable isotope ratios of lotic periphyton
Oecologia, Oct. 2012
170, 2, 541, 549
[Reviewed]
Lead, Corresponding - Naoto F. Ishikawa; Masao Uchida; Yasuyuki Shibata; Ichiro Tayasu
Natural C-14 provides new data for stream food-web studies: a comparison with C-13 in multiple stream habitats
Marine and Freshwater Research, 2012
63, 3, 210, 210
[Reviewed] - Naoto F. Ishikawa; Masao Uchida; Yasuyuki Shibata; Ichiro Tayasu
A new application of radiocarbon (14C) concentrations to stream food web analysis
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Apr. 2010
268, 7-8, 1175, 1178
[Reviewed]
Lead, Corresponding
Misc.
- Naoto F. ISHIKAWA
Compound-specific Nitrogen Isotope and Radiocarbon Analyses of Amino Acids in Biological Samples
BUNSEKI KAGAKU, 05 Dec. 2022
71, 12, 653, 662
[Reviewed]
Lead, Last, Corresponding - ISHIKAWA Naoto F.; TAKASHIMA Ayaka; KONDOH Michio
Exploring factors controlling the integrated trophic position (iTP) of food web networks
日本生態学会大会講演要旨(Web), 2022
69th - 板橋悠; 大森貴之; 尾嵜大真; 山崎孔平; 大河内直彦; 高野淑識; 小川奈々子; 石川尚人; 米田穣
アミノ酸の微量グラファイト化による遺跡出土骨14C年代測定の高精度化
日本文化財科学会大会研究発表要旨集, 2019
36th - IKEYA Tohru; ISHIDA Takuya; UEHARA Yoshitoshi; ASANO Satoshi; TAYASU Ichiro; OKUDA Noboru; USHIO Masayuki; USHIO Masayuki; FUJINAGA Shohei; KO Chia-Ying; PERALTA Elfritzson Martin; ISHIKAWA Naoto F.; IWATA Tomoya
The analysis of the community composition of riverine bacteria and microalgae in relation to nutrient status and diversity: the case in irrigation season in the Yasu River, Japan
日本地球惑星科学連合大会予稿集(Web), 2019
2019 - 加藤義和; 近藤倫生; 石川尚人; 冨樫博幸; 神松幸弘; 吉村真由美; 由水千景; 原口岳; 長田穣; 大手信人; 徳地直子; 奥田昇; 三木健; 陀安一郎
食物網の“かたち“を捉える新手法:河川生態系での実証
日本陸水学会大会講演要旨集, 2018
83rd - Ishikawa, N.F.; Nyffeler, R.; Haghipour, N.; Eglinton, T.I.; Ohkouchi, N
Compound-specific 14C analysis in ecology: Do trees recycle chlorophyll?
Laboratry of Ion Beam Physics, ETH Zurich, Annual Report 2017, 2017 - 冨樫 博幸; 大手 信人; 石川 尚人; 加藤 義和; 吉村 真由美; 神松 幸弘; 由水 千景; 徳地 直子; 陀安 一郎
Effects of human activity on river ecosystems using multi-element stable isotope analysis
昆虫と自然, Dec. 2016
51, 13, 33, 35 - 冨樫博幸; 石川尚人; 加藤義和; 吉村真由美; 神松幸弘; 由水千景; 大手信人; 徳地直子; 陀安一郎
森林施業が河川食物網へ及ぼす長期的影響の解明:安定同位体比を利用して
昆虫と自然, 30 Jun. 2016
51, 7, 38‐40, 40 - 奥田昇; 岩田智也; 林拓矢; 村上綾; 陀安一郎; 石川尚人; 岡野淳一; 冨樫博幸; 中野伸一; 酒井陽一郎; SONG Uhram; 尾坂兼一; CID Abigail P
流域の栄養循環を駆動する河床微生物群集の生態系機能評価
日本地球惑星科学連合大会予稿集(Web), 2016
2016, ROMBUNNO.AHW16‐09 (WEB ONLY) - 奥田昇; 岩田智也; 林拓矢; 村上綾; 陀安一郎; 石川尚人; 岡野淳一; 冨樫博幸; 中野伸一; 酒井陽一郎; SONG U; 尾坂兼一; CID A. P
河川生態系の生物多様性と栄養循環機能:流域スケールからのアプローチ
日本陸水学会大会講演要旨集, 2015
80th, 186 - 冨樫博幸; 石川尚人; 加藤義和; 吉村真由美; 神松幸弘; 由水千景; 徳地直子; 大手信人; 陀安一郎
マルチアイソトープ解析による森林施業が河川生態系へ及ぼす長期的影響とその解明
日本生態学会大会講演要旨(Web), 2015
62nd, PB2-044 (WEB ONLY) - 伊藤雅之; 甲山治; 石川尚人; 田中賢治
熱帯泥炭湿地を起源とする河川水の溶存物質の流下過程に伴う量的質的変化の解明
京都大学生存基盤科学研究ユニット研究成果報告書, 06 Mar. 2014
2012/2013, 43, 44 - Mori Terutaka; Ishikawa Naoto F.
An overview of links between stream and other ecosystems
Japanese Journal of Ecology, 2014
64, 2, 143, 150
[Reviewed]
Last - Ishikawa Naoto F.
Review and perspectives on various isotope tools in stream food web analyses with special reference to carbon-14 natural abundances
Japanese Journal of Ecology, 2014
64, 2, 133, 142
[Reviewed]
Lead - TAYASU Ichiro; ISHIKAWA Naoto F
Natural Isotope Ratios of Living Organisms and Biodiversity Science
ぶんせき, 05 Feb. 2013
458, 79, 85 - 加藤,義和; 石川,尚人; 冨樫,博幸; 由水,千景; 陀安,一郎; 奥田,昇
アミノ酸の窒素安定同位体比を用いた琵琶湖産魚類の栄養段階推定
第60回日本生態学会大会, 2013
[Reviewed] - 冨樫,博幸; 加藤,義和; 石川,尚人; 尾坂,兼一; 吉村,真由美; 由水,千景; 徳地,直子; 陀安,一郎; 大手,信人
ミカン畑と魚類をつなぐ硝酸: 土地利用が河川生態系へ及ぼす影響に関する安定同位体解析
第60回日本生態学会大会, 2013
[Reviewed] - 石川尚人; 冨樫博幸; 加藤義和; 吉村真由美; 徳地直子; 陀安一郎
スギ人工林の伐採施業が渓流生態系を流れる炭素の14C年代に及ぼす影響
日本陸水学会第78回大会, 2013 - 石川尚人; 加藤義和; 冨樫博幸; 吉村真由美; 由水千景; 奥田昇; 陀安一郎
河川複雑系食物網の高精度解析 〜アミノ酸窒素安定同位体比からのアプローチ〜
日本生態学会第60回大会, 2013 - 石川尚人; 加藤義和; 冨樫博幸; 吉村真由美; 由水千景; 奥田昇; 陀安一郎
アミノ酸窒素安定同位体比を用いた河川食物網解析
日本地球惑星科学連合2013年大会, 2013 - 加藤義和; 石川尚人; 冨樫博幸; 由水千景; 奥田昇; 陀安一郎
琵琶湖集水域のヨシノボリ属におけるアミノ酸窒素安定同位体比の流程変化
日本陸水学会, 2013 - 加藤,義和; 石川,尚人; 冨樫,博幸; 吉村,真由美; 由水,千景; 奥田,昇; 陀安,一郎
アミノ酸の窒素安定同位体比を用いた琵琶湖流域の食物網解析
第77回日本陸水学会大会, 2012
[Reviewed] - 冨樫,博幸; 加藤,義和; 石川,尚人; 吉村,真由美; 徳地,直子; 大手,信人; 由水,千景; 陀安,一郎
アミノ酸の窒素安定同位体比から読み解く山地渓流域の食物網構造-護摩壇山試験地の事例-
第77回日本陸水学会大会, 2012
[Reviewed] - 石川尚人; 内田昌男; 柴田康行; 陀安一郎
放射性炭素14天然存在比を用いた陸水生態系の解析手法
日本陸水学会第77回大会, 2012 - Naoto Ishikawa; Masao Uchida; Yasuyuki Shibata; Ichiro Tayasu
Evidence of old carbon subsidization to stream food webs approached by C-14 natural abundance method
ASLO Summer Meeting, 2012 - 石川尚人; 内田昌男; 柴田康行; 陀安一郎
流域地質が河川食物網を流れる炭素の14C年代に及ぼす影響
日本陸水学会第76回大会, 2011 - Naoto Ishikawa; Masao Uchida; Yasuyuki Shibata; Ichiro Tayasu
Natural carbon-14 signature provides new data for stream food web studies
96th ESA Annual Meeting, 2011 - 石川尚人; 内田昌男; 柴田康行; 陀安一郎
放射性炭素14の天然存在比を用いた琵琶湖集水域における河川食物網の時間軸構造の解明
地球惑星連合大会, 2010 - Naoto Ishikawa; Masao Uchida; Yasuyuki Shibata; Ichiro Tayasu
Tracing carbon fixation pathway within riverine food webs elucidated by natural 14C abundance
ASLO 2009, 2009 - 石川尚人; 内田昌男; 陀安一郎
14Cを用いた河川生態系の食物網における炭素起源推定
日本陸水学会近畿支部会第19回研究会, 2008 - Naoto Ishikawa; Masao Uchida; Yasuyuki Shibata; Ichiro Tayasu
The use of Δ14C as an indicator of carbon transfer in stream ecosystems
The 11th AMS Symposium, 2008 - 陀安 一郎; 兵藤 不二夫; 石川 尚人
大気圏核実験由来放射性炭素14を用いた生態学
生物の科学 遺伝, 2008
62, 6, 90, 94
Last - 高津文人; 由水千景; 大手信人; 陀安一郎; 木庭啓介; 眞壁明子; KIM Chulgoo; 槙洸; 西村洋子; 小林由紀; 横川太一; 伊藤雅之; 尾坂兼一; 藤本将光; 石川尚人; 永田俊
高密度シノプティツク観測による河川の環境診断 炭素安定同位体比による評価
日本陸水学会大会講演要旨集, 10 Sep. 2007
72nd, 62 - 由水千景; 高津文人; 大手信人; 陀安一郎; 木庭啓介; 眞壁明子; KIM Chulgoo; 槙洸; 西村洋子; 小林由紀; 横川太一; 伊藤雅之; 尾坂兼一; 藤本将光; 石川尚人; 永田俊
高密度シノプティック観測による河川の環境診断―窒素安定同位体比による評価
日本陸水学会大会講演要旨集, 10 Sep. 2007
72nd, 61
Media Coverage
- 「食物網」ってなんだろう？
指令！海を探究せよ, 毎日小学生新聞, 09 Mar. 2026, Paper - 生態系の複雑さを測る指標「iTP」琵琶湖流域でダイナミックな変動を捉える！
プレスリリース, 18 Feb. 2025, Internet - 生物の集まりから「生態ピラミッド」の形を調べる！地球の生物多様性の減少問題に挑む研究とは
講談社, ブルーバックス, 19 Jul. 2024, Internet - New proxy for integrating biodiversity and food-web structure ―Revolutionary observation on ecosystems using iTP―
Press Release, 06 Dec. 2023, Internet
