| High‐resolution food webs based on nitrogen isotopic composition of amino acids Y Chikaraishi, SA Steffan, NO Ogawa, NF Ishikawa, Y Sasaki, M Tsuchiya, ... Ecology and Evolution 4 (12), 2423-2449, 2014 | 216 | 2014 |
| Global meta-analysis for controlling factors on carbon stable isotope ratios of lotic periphyton NF Ishikawa, H Doi, JC Finlay Oecologia 170 (2), 541-549, 2012 | 84 | 2012 |
| Compound-Specific Radiocarbon Analysis by Elemental Analyzer–Accelerator Mass Spectrometry: Precision and Limitations N Haghipour, B Ausín, MO Usman, N Ishikawa, L Wacker, C Welte, ... Analytical Chemistry 91 (3), 2042-2049, 2019 | 63 | 2019 |
| Use of compound-specific nitrogen isotope analysis of amino acids in trophic ecology: assumptions, applications, and implications NF Ishikawa Ecological Research 33 (5), 825-837, 2018 | 59 | 2018 |
| Stable nitrogen isotopic composition of amino acids reveals food web structure in stream ecosystems NF Ishikawa, Y Kato, H Togashi, M Yoshimura, C Yoshimizu, N Okuda, ... Oecologia 175 (3), 911-922, 2014 | 51 | 2014 |
| Tracking long‐distance migration of marine fishes using compound‐specific stable isotope analysis of amino acids J Matsubayashi, Y Osada, K Tadokoro, Y Abe, A Yamaguchi, K Shirai, ... Ecology Letters 23 (5), 881-890, 2020 | 47 | 2020 |
| Use of carbon-13 and carbon-14 natural abundances for stream food web studies NF Ishikawa, F Hyodo, I Tayasu Ecological Research 28 (5), 759-769, 2013 | 45 | 2013 |
| Biogeochemical tools for characterizing organic carbon in inland aquatic ecosystems SL McCallister, NF Ishikawa, DN Kothawala Limnology and Oceanography Letters 3 (6), 444-457, 2018 | 42 | 2018 |
| A new analytical method for determination of the nitrogen isotopic composition of methionine: Its application to aquatic ecosystems with mixed resources NF Ishikawa, Y Chikaraishi, Y Takano, Y Sasaki, Y Takizawa, M Tsuchiya, ... Limnology and Oceanography: Methods 16 (9), 607-620, 2018 | 32 | 2018 |
| Carbon storage reservoirs in watersheds support stream food webs via periphyton production NF Ishikawa, M Uchida, Y Shibata, I Tayasu Ecology 95 (5), 1264-1271, 2014 | 31 | 2014 |
| Chlorophyll a-specific Δ14C, δ13C and δ15N values in stream periphyton: implications for aquatic food web studies NF Ishikawa, M Yamane, H Suga, NO Ogawa, Y Yokoyama, N Ohkouchi Biogeosciences 12 (22), 6781-6789, 2015 | 29 | 2015 |
| Sources of dissolved inorganic carbon in two small streams with different bedrock geology: insights from carbon isotopes NF Ishikawa, I Tayasu, M Yamane, Y Yokoyama, S Sakai, N Ohkouchi Radiocarbon 57 (3), 439-448, 2015 | 28 | 2015 |
| Improved method for isolation and purification of underivatized amino acids for radiocarbon analysis NF Ishikawa, Y Itahashi, TM Blattmann, Y Takano, NO Ogawa, M Yamane, ... Analytical Chemistry 90 (20), 12035-12041, 2018 | 26 | 2018 |
| Terrestrial–aquatic linkage in stream food webs along a forest chronosequence: multi‐isotopic evidence NF Ishikawa, H Togashi, Y Kato, M Yoshimura, Y Kohmatsu, C Yoshimizu, ... Ecology 97 (5), 1146-1158, 2016 | 22 | 2016 |
| A method for stable carbon isotope measurement of underivatized individual amino acids by multi‐dimensional high‐performance liquid chromatography and elemental analyzer … Y Sun, NF Ishikawa, NO Ogawa, H Kawahata, Y Takano, N Ohkouchi Rapid Communications in Mass Spectrometry 34 (20), e8885, 2020 | 20 | 2020 |
| Liquid chromatographic isolation of individual amino acids extracted from sediments for radiocarbon analysis TM Blattmann, DB Montluçon, N Haghipour, NF Ishikawa, TI Eglinton Frontiers in Marine Science 7, 174, 2020 | 16 | 2020 |
| A new application of radiocarbon (14C) concentrations to stream food web analysis NF Ishikawa, M Uchida, Y Shibata, I Tayasu Nuclear Instruments and Methods in Physics Research Section B: Beam …, 2010 | 16 | 2010 |
| Using food network unfolding to evaluate food–web complexity in terms of biodiversity: theory and applications Y Kato, M Kondoh, NF Ishikawa, H Togashi, Y Kohmatsu, M Yoshimura, ... Ecology Letters 21, 1065-1074, 2018 | 15 | 2018 |
| Integrated trophic position decreases in more diverse communities of stream food webs NF Ishikawa, Y Chikaraishi, N Ohkouchi, AR Murakami, I Tayasu, ... Scientific Reports 7, 2130, 2017 | 15 | 2017 |
| 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 NF Ishikawa, NO Ogawa, Y Chikaraishi, M Yamaguchi, K Fujikura, ... Frontiers in Marine Science 8, 641282, 2021 | 14 | 2021 |
Naohiko OhkouchiDirector of Biogeogeochemistry Department, JAMSTEC確認したメール アドレス: jamstec.go.jp
