永田 俊(教授)


永田 俊(教授)
〒277-0836 千葉県柏市柏の葉5-1-5


1980: 東京都立大学理学部生物学科卒業
1982: 京都大学大学院理学研究科修士課程修了
1987: 京都大学大学院理学研究科博士課程修了(理学博士)


1989 – 1991: デラウェア大学海洋学部研究員(指導教員 Dr. David Kirchman)
1991 – 1995: 名古屋大学水圏科学研究所(大気水圏科学研究所)助手
1995 – 2000: 東京大学海洋研究所助教授
2000 – 2008: 京都大学生態学研究センター教授
2008 –2010 : 東京大学海洋研究所教授
2010- 現在にいたる: 東京大学大気海洋研究所教授




日本海洋学会、日本陸水学会、日本微生物生態学会、日本生態学会、Association for the Sciences of Limnology and Oceanography (ASLO)


Associate Editor, Frontiers in Marine Science: Biogeochemistry (2015- )
Contributing Editor, Marine Ecology Progress Series (2012- )
Section Editor, Fundamental and Applied Limnology (2011- )
Review Editor, Aquatic Microbial Ecology (2003 – )
Editorial Board, Microbial Ecology (2002 – )
Contributing Editor, Aquatic Biology (2007 – )
Associate Editor, Microbes and Environments (2010 – 2016)
Editor-in-Chief, Limnology (2001 – 2003)
Editorial Board, Limnology (2000 – 2001)
Editorial Board, Ecological Research (1998 – 1999)
Editorial Board, Microbes and Environments (1996 – 2000)


日本海洋学会岡田賞  (1994)
日本海洋学会日高論文賞 (2003)


  1. Nagata, T. and Watanabe, Y. (1983) Observations on the colonial pattern of periphytic bacteria in a river. Physiology and Ecology Japan 20: 71-79.
  2. Nagata, T. (1984) Bacterioplankton in Lake Biwa; Annual fluctuations of bacterial numbers and their possible relationship with environmental variables. The Japanese Journal of Limnology 45: 126-133.
  3. Nagata, T. (1985) Filter mesh-sizes of Daphnia longispina and its filtering rates on natural bacteria. Memoirs of the Faculty of Science, Kyoto University, Series of Biology 10: 109-114.
  4. Nagata, T. (1986) Carbon and nitrogen content of natural planktonic bacteria. Applied and Environmental Microbiology 52: 28-32.
  5. Nagata, T. (1986) The seasonal abundance and vertical distribution of the <3-µm phytoplankton in the north basin of Lake Biwa. Ecological Research 1: 207-221. DOI:10.1007/BF02347022
  6. Nagata, T. (1987) Production rate of planktonic bacteria in the north basin of Lake Biwa Japan. Applied and Environmental Microbiology 53: 2872-2882.pdf
  7. Nagata, T. (1988) Seasonal abundance, grazing impacts on bacteria, and vertical distribution of heterotrophic microflagellates in the south basin of Lake Biwa. The Japanese Journal of Limnology 49: 167-174.
  8. Nagata, T. (1988) The microflagellate-picoplankton food linkage in the water column of Lake Biwa. Limnology and Oceanography 33: 504-517. DOI: 10.4319/lo.1988.33.4.0504. Open Access
  9. Nagata, T. and Okamoto, K. (1988) Filtering rates on natural bacteria by Daphnia longispina and Eodiaptomus japonicus in Lake Biwa. Journal of Plankton Research 10: 835-850. DOI:10.1093/plankt/10.4.835
  10. Nagata, T. (1988) Contribution of planktonic bacteria to the carbon cycling in lake environments. Topics in Prokaryotes Biology 1: 16-23.
  11. Nagata, T., Someya, T., Konda, T., Yamamoto, M., Morikawa, K., Fukui, M., Kuroda, N., Takahashi, K., Oh, S., Mori, M., Araki, S. and Kato, K. (1989) Intercalibration of the acridine orange direct count method of aquatic bacteria. Bulletin of Japanese Society of Microbial Ecology 4: 89-99. Open Access
  12. Nagata, T. and Kirchman, D. L. (1990) Filtration-induced release of dissolved free amino acids: application to cultures of marine protozoa. Marine Ecology Progress Series 68: 1-5. Open Access
  13. Nagata, T. and Watanabe, Y. (1990) Carbon- and nitrogen-to-volume ratios of bacterioplankton grown under different nutritional conditions. Applied and Environmental Microbiology 56: 1303-1309.
  14. Nagata, T. (1990) Contribution of picoplankton to the grazer food chain of Lake Biwa. In: Large Lakes – Ecological Structure and Function (eds. by M. M. Tilzer and C. Serruya) pp. 526-539. Springer-Verlag Berlin. DOI: 10.1007/978-3-642-84077-7_28
  15. Nagata, T. and Kirchman, D. L. (1991) Release of dissolved free and combined amino acids by bacterivorous marine flagellates. Limnology and Oceanography 36: 433-443. DOI: 10.4319/lo.1991.36.3.0433. Open Access
  16. Nagata, T. and Kirchman, D. L. (1992) Release of dissolved organic matter by heterotrophic protozoa: Implications for microbial food webs. Archiv fur Hydrobiologie, Beiheft Ergebnisse der Limnologie 35: 99-109.
  17. Nagata, T. and Kirchman, D. L. (1992) Release of macromolecular organic complexes by heterotrophic marine flagellates. Marine Ecology Progress Series 83: 233-240. DOI: 10.3354/meps083233
  18. 永田 俊 (1993) 浮遊性細菌の炭素現存量‐測定方法の諸問題. 日本微生物生態学会報 8: 49-58.
  19. 永田 俊 (1993) 微生物ループと水圏物質循環‐溶存有機物の生成と分解をめぐって. 日本微生物生態学会報 8: 149-155.
  20. Nagata, T., Takai, K., Kawanobe, K., Kim, D-S., Nakazato, R., Guselnikova, N., Bondarenko, N., Mologawaya, O., Kostronova, T., Drucker, V., Satoh, Y. and Watanabe, Y. (1994) Autotrophic picoplankton in southern Lake Baikal: abundance, growth, and grazing mortality during summer. Journal of Plankton Research 16: 945-959. DOI: 10.1093/plankt/16.8.945
  21. 永田 俊 (1994) 海洋微生物群集の捕食過程における有機物代謝に関する研究. (1994年度日本海洋学会岡田賞受賞記念講演). 海の研究 3: 427-436.
  22. Haga, H., Nagata, T. and Sakamoto, M. (1995) Size-fractionated NH4+ regeneration in the pelagic environments of two mesotrophic lakes. Limnology and Oceanography 40: 1091-1099. DOI: 10.4319/lo.1995.40.6.1091
  23. Nagata, T. and Koike, I. (1995) Marine colloids: Their roles in food webs and biogeochemical fluxes. In: Biogeochemical Processes and Ocean Flux in the Western Pacific (eds. by Sakai, H. and Nozaki, Y.) pp. 275-292. Terra Scientific Publishers Co., Tokyo.
  24. Nagata, T. and Kirchman, D. L. (1996) Bacterial degradation of protein adsorbed to model submicron particles in seawater. Marine Ecology Progress Series 132: 241-248. DOI:10.3354/meps132241
  25. Nagata, T., Takai, K., Kawabata, K., Nakanishi, M. and Urabe, J. (1996) The trophic transfer via a picoplankton-flagellate-copepod food chain during a picocyanobacterial bloom in Lake Biwa. Archiv fur Hydrobiologie 137: 145-160.
  26. Frenette, J-J., Vincent, W.F., Legendre, L. and Nagata, T. (1996) Size-dependent phytoplankton responses to atmospheric forcing in Lake Biwa. Journal of Plankton Research 18: 371-391. DOI: 10.1046/j.1365-2427
  27. Frenette, J-J., Vincent, W.F., Legendre, L. and Nagata, T. (1996) Size-dependent changes in phytoplankton C and N uptake in the dynamic mixed layer of Lake Biwa. Freshwater Biology 36: 221-236. DOI: 10.1046/j.1365-2427. Open Access
  28. Haga, H., Nagata, T. and Sakamoto, M. (1996) NH4+ regeneration and uptake in mesotrophic lakes: Diurnal and seasonal variations. The Japanese Journal of Limnology 57: 213-223. DOI:10.3739/rikusui.57.213
  29. Frenette, J-J., Vincent, W.F., Legendre, L., Nagata, T., Kawabata, K. and Kumagai, M. (1996) Biological responses to typhoon-induced mixing in two morphologically distinct basins of Lake Biwa. The Japanese Journal of Limnology 57: 501-510. DOI:10.3739/rikusui.57.501
  30. Nagata, T., Ogawa, T., Frenette, J-J., Legendre, L. and Vincent, W. F. (1996) Uncoupled responses of bacterial and algal production to storm-induced mixing in Lake Biwa. The Japanese Journal of Limnology 57: 533-543. DOI:10.3739/rikusui.57.533
  31. Ogawa, T. and Nagata, T. (1996) Effects of strom disturbance on bacterial utilization of dissolved amino acids in the shallow, eutrophic South Basin of Lake Biwa. The Japanese Journal of Limnology 57: 523-531. DOI:10.3739/rikusui.57.523
  32. 永田 俊 (1996) 温室の中の海洋生物ネットワーク. In: 大気水圏科学から見た地球温暖化 (ed. by半田暢彦) pp. 279-286. 名古屋大学出版会.
  33. Kumagai, M., Shimoda, C., Vincent, W.F. and Nagata, T. (1996) Fine scale profiling at core stations. In: Lake Biwa Study Monographs. pp. 91-114. Lake Biwa Research Institute.
  34. 永田 俊 (1997) 海洋における微生物食物網の構造と機能. 日本生態学会誌 47: 63-69.
  35. Koike, I. and Nagata, T. (1997) High potential activity of extracellular alkaline phosphatase in deep waters of the central Pacific. Deep-Sea Research II 44: 2283-2294. DOI:10.1016/S0967-0645(97)00025-8
  36. Nagata, T. and Kirchman, D. L. (1997) Roles of submicron particles and colloids in microbial food webs and biogeochemical cycles within marine environments. Advances in Microbial Ecology 15: 81-103. DOI:10.1007/978-1-4757-9074-0_3
  37. Nagata, T., Fukuda, R., Koike, I., Kogure, K. and Kirchman, D.L. (1998) Degradation by bacteria of membrane and soluble protein in seawater. Aquatic Microbial Ecology 14: 29-37. DOI:10.3354/ame014029
  38. Yamasaki, A., Fukuda, H., Fukuda, R., Miyajima, T., Nagata, T., Ogawa, H. and Koike, I. (1998) Submicrometer particles in northwest Pacific coastal environments: Abundance, size distribution and biological origins. Limnology and Oceanography 43: 536-542. DOI:10.4319/lo.1998.43.3.0536. Open Access
  39. Fukuda, R., Ogawa, H., Nagata, T. and Koike, I. (1998) Direct determination of carbon and nitrogen content of natural bacterial assemblages in marine environments. Applied and Environmental Microbiology 64: 3352-3358.
  40. Nagata, T., Fukuda, H., Fukuda, R. and Koike, I. (2000) Bacterioplankton distribution and production in deep Pacific waters: Large-scale geographic variations and possible coupling with sinking particle fluxes. Limnology and Oceanography 45: 426-435. DOI:10.4319/lo.2000.45.2.0426
  41. Fukuda, R., Sohrin, Y., Saotome, N., Fukuda, H., Nagata, T. and Koike, I. (2000) East-west gradient in ectoenzyme activities in the subarctic Pacific: Possible regulation by zinc. Limnology and Oceanography 45: 930-939. DOI:10.4319/lo.2000.45.4.0930
  42. Nagata, T. (2000) Production mechanisms of dissolved organic matter. In: Microbial Ecology of the Oceans (ed. by Kirchman, D.L.) pp. 121-152. John Wiley & Sons, New York.
  43. Nagata, T. and Kirchman, D.L. (2000) Bacterial mortality: A pathway for the formation of refractory DOM? In: Microbial Biosystems: New Frontiers – Proceedings of the 8th International Symposium on Microbial Ecology (eds. by Bell, C. R., Brylinsky, M, and Johnson-Green, P.) pp. 153-158. Atlantic Canada Society for Microbial Ecology.
  44. Nagata, T. (2000) “Picopellets” produced by phagotrophic nanoflagellates: Role in the material cycling within marine environments. In: Dynamics and Characterization of Marine Organic Matter (eds. by Handa, N., Tanoue, E. and Hama, T.) pp. 241-256. Terra Scientific Publication Tokyo. DOI:10.1007/978-94-017-1319-1_12
  45. 永田 俊 (2000) 微生物ループ理論の展開. 海洋 23: 76-82.
  46. Koike, I., Ogawa, H., Nagata, T., Fukuda, R. and Fukuda, H. (2001) Silicate to nitrate ratio of the upper sub-arctic Pacific and the Bering Sea basin in summer: Its implication for phytoplankton dynamics. Journal of Oceanography 57(3): 253-260. DOI:10.1023/A:1012474327158
  47. Nagata, T., Fukuda, R. Fukuda, H. and Koike, I. (2001) Basin-scale geographic patterns of bacterioplankton biomass and production in the subarctic Pacific, July-September 1997. Journal of Oceanography 57(3): 301-313. DOI:10.1023/A:1012482528975
  48. Aranami, K., Watanabe, S., Tsunogai, S., Hayashi, M., Furuya, K. and Nagata, T. (2001) Biogeochemical variation in dimethylsulfide, phytoplankton pigments and heterotrophic bacterial production in the subarctic North Pacific during summer. Journal of Oceanography 57(3): 315-322. DOI:10.1023/A:1012434613046
  49. Haga, T., Nagata, T. and Sakamoto, M. (2001) Ammonium regeneration within the euphotic zone. In: Lake Kizaki. Limnology and Ecology of a Japanese Lake (eds. by Saijo, Y. and Hayashi, H.) pp. 207-215. Backhuys, Leiden.
  50. 永田 俊(2002)海洋における「溶存有機物 – 微生物連鎖系」研究の新しい展開. 日本プランクトン学会報 49(1): 15-20
  51. 永田 俊(2002)溶存有機物の連鎖系. 月刊海洋 号外 29: 120-125.
  52. 永田 俊(2003)ミクロ生態系への招待. In:生物多様性科学のすすめ(ed. by 大串隆之) pp.110-135. 丸善
  53. Nagata, T., Meon, B. and Kirchman, D. L. (2003) Microbial degradation of peptidoglycan in seawater. Limnology and Oceanography 48: 745-754. DOI:10.4319/lo.2003.48.2.0745. Open Access
  54. 永田 俊(2003)細菌の生物密度と現存量 In:生物環境調査計測辞典 第2巻陸域編② (竹内均監修) pp.183-187. フジ・テクノシステム
  55. Yoshida, T., Sekino, T., Genkai-Kato, M., Logachva, N.P., Bondarenko, N.A., Kawabata, Z., Khodzher, T.V., Melnik, N.G., Hino, S., Nozaki, K., Nishimura, Y., Nagata, T., Higashi, M. and Nakanishi, M. (2003) Seasonal dynamics of primary production in the pelagic zone of southern Lake Baikal. Limnology. 4:53-62. DOI:10.1007/s10201-002-0089-3
  56. 永田 俊(2003)水の中に広がる微生物世界-そのはたらきと多様性- In: 第17回「大学と科学」公開シンポジウム講演収録集「生物多様性の世界」 人と自然の共生というパラダイムを目指して(Ed. by 川那部浩哉)pp.63-73. クバプロ
  57. Yokokawa, T., Nagata, T., Cottrell, M.T. and Kirchman, D.L. (2004) Growth rate of the major phylogenetic bacterial groups in the Delaware estuary. Limnology and Oceanography 49:1620-1629.
  58. Nishimura, Y., Kim, C. and Nagata, T. (2005) Vertical and seasonal variations of bacterioplankton subgroups with different nucleic acid content: Possible regulation by phosphorus. Applied and Environmental Microbiology 71:5828-5836. DOI: 10.4319/lo.2004.49.5.1620
  59. Yokokawa, T. and Nagata, T. (2005) Growth and grazing mortality rates of phylogenetic groups of bacterioplankton in coastal marine environments. Applied and Environmental Microbiology 71:6799-6807 . DOI:10.1128/AEM.71.11.6799-6807.2005
  60. Kim, C., Nishimura, Y. and Nagata, T. (2006) Role of dissolved organic matter in hypolimnetic mineralization of carbon and nitrogen in a large, monomictic lake. Limnology and Oceanography 51(1):70-78. DOI:10.4319/lo.2006.51.1.0070
  61. 永田俊(2006)第4章 微生物ループの基本概念 In: 海洋生物の連鎖(Ed. by 木暮一啓) pp. 84-102. 東海大学出版会
  62. Fukuda, H., Sohrin, R., Nagata, T. and Koike, I. (2007) Size distribution and biomass of nanoflagellates in meso- and bathypelagic layers of the subarctic Pacific. Aquatic Microbial Ecology 46: 203-207. DOI:10.3354/ame046203
  63. Ram, A.S.P., Nagata, T., Tomaru, Y. and Nagasaki, K. (2007) Tungstate compounds as an alternative to uranyl acetate for enumerating viral infected prokaryote cells in aquatic systems. Aquatic Microbial Ecology 47: 209-212. DOI:10.3354/ame047209
  64. Motegi, C. and Nagata, T. (2007) Enhancement of viral production by addition of nitrogen or nitrogen plus carbon in subtropical surface waters of the South Pacific. Aquatic Microbial Ecology 48: 27-34. DOI:10.3354/ame048027. Open Access
  65. Nishimura, Y. and Nagata, T. (2007) Alphaproteobacterial dominance in a large mesotrophic lake (Lake Biwa, Japan). Aquatic Microbial Ecology 48: 231-240. DOI:10.3354/ame048231. Open Access
  66. Kim, C., Nishimura, Y. and Nagata, T. (2007) High potential activity of alkaline phosphatase in the benthic nepheloid layer of a large mesotrophic lake: Implications for phosphorus regeneration in oxygenated hypolimnion. Aquatic Microbial Ecology 49: 303-311. DOI:10.3354/ame01137
  67. 永田 俊, 茂手木千晶 (2007) 微生物の海-海洋生態系における微生物群集の働きと多様性In: 生物の多様性って何だろう (Ed. by 京都大学総合博物館・京都大学生態学研究センター) pp.273-295.京都大学学術出版会
  68. Umezawa, Y., Ishitobi, T., Rungsupa, S., Onodera, S., Yamanaka, T., Yoshimizu, C., Tayasu, I., Nagata, T., Wattayakorn, G. and Taniguchi, M. (2007) Evaluation of fresh groundwater contributions to the nutrient dynamics at shallow subtidal areas adjacent to metro-Bangkok. IAHS-AISH Publications 312:169-179.
  69. Miki, T., Nakazawa, T., Yokokawa, T. and Nagata, T. (2008) Functional consequences of viral impacts on bacterial communities: a food-web model analysis. Freshwater Biology 53:1142-1153. DOI:10.1111/j.1365-2427.2007.01934.x. Open Access
  70. Kohzu, A., Tayasu, I., Yoshimizu, C., Maruyama, A., Kohmatsu, Y., Hyodo, F., Onoda, Y., Igeta, A., Matsui, K., Nakano, T., Wada, E., Nagata, T. and Takemon, Y. (2009) Nitrogen stable isotopic signatures of basal food items, primary consumers and omnivores in rivers with different levels of human impact. Ecological Research 24:127-136. DOI:10.1007/s11284-008-0489-x
  71. 金 喆九・宮島 利宏・永田 俊(2008) 第4章2節 有機物の生産と分解(I)-溶存無機炭素安定同位体比による評価―. In:「流域環境評価と安定同位体」(永田俊・宮島利宏編) pp.133-152.京都大学学術出版会
  72. 槙 洸・永田 俊(2008) 第4章5節 湖沼における溶存有機物の起源と動態. In:「流域環境評価と安定同位体」(永田 俊・宮島 利宏編) pp.187-198.京都大学学術出版会
  73. 永田 俊(2008) 第8章 流域環境評価と安定同位体指標. In:「流域環境評価と安定同位体」(永田 俊・宮島 利宏編) pp.395-412.京都大学学術出版会
  74. Nagata, T. (2008) Organic Matter -Bacteria Interactions in Seawater. In: Microbial Ecology of the Oceans (2nd edition) (ed. by Kirchman, D.L.) pp. 207-241. John Wiley & Sons, New York
  75. Umezawa, Y., Hosono, T., Onodera, S., Siringan, F., Buapeng, S., Delinom, R., Yoshimizu, C., Tayasu, I., Nagata, T. and Taniguchi, M. (2008) Sources of nitrate and ammonium contamination in groundwater under developing Asian megacities. Science of the Total Environment 404: 361-376. DOI:10.1016/j.scitotenv.2008.04.021
  76. Miki, T., Yokokawa, T., Nagata, T. and Yamamura, N. (2008) Immigration of prokaryotes to local environments enhances remineralization efficiency of sinking particles: a metacommunity model. Marine Ecology Progress Series 366: 1-14. DOI:10.3354/meps07597. Open Access
  77. Kashiyama, Y., Miyashita, H., Ohkubo, S., Ogawa, N. O., Chikaraishi, Y., Takano, Y., Suga, H., Toyofuku, T., Nomaki, H., Kitazato, H., Nagata, T. and Ohkouchi, N. (2008) Evidence of global chlorophyll d. Science 321:658. DOI:10.1126/science.1158761
  78. Kohzu. A., Miyajima, T., Tayasu, I., Yoshimizu, C., Hyodo, F., Matsui, K., Nakano, T., Wada, E., Fujita, N. and Nagata, T. (2008) Use of stable nitrogen isotope signatures of riparian macrophytes as an indicator of anthropogenic N inputs to river ecosystems. Environmental Science and Technology 42: 7837-7841. DOI:10.1007/s11284-008-0489-x
  79. Kobayashi, Y., Kim, C., Yoshimizu, C., Kohzu, A., Tayasu, I. and Nagata, T. (2009) Longitudinal changes in bacterial community composition in river epilithic biofilms: influence of nutrients and organic matter. Aquatic Microbial Ecology 54: 135-152. DOI:10.3354/ame01258
  80. Miki, T., Giuggioli, L., Kobayashi, Y., Nagata, T. and Levin, S.A. (2009) Vertically structured prokaryotic community can control the efficiency of the biological pump in the oceans. Theoretical Ecology 2: 199-216. DOI:10.1007/s12080-009-0042-8
  81. 永田 俊(2009)第21章 海のなかのミクロな環. In: 海と生命-「海の生命観」を求めて-(ed. by塚本 勝巳) pp.306-322 東海大学出版会
  82. Motegi, C., Nagata, T., Miki, T., Weinbauer, M. G., Legendre, L. and Rassoulzadegan, F. (2009) Viral control of bacterial growth efficiency in marine pelagic environments. Limnology and Oceanography 54: 1901-1910. DOI:10.4319/lo.2009.54.6.1901. Open Access
  83. Miyajima, T., Yoshimizu, C., Tsuboi, Y., Tanaka, Y., Tayasu, I., Nagata, T. and Koike, I. (2009) Longitudinal distribution of nitrate δ15N and δ18O in two contrasting tropical rivers: implications for instream nitrogen cycling. Biogeochemistry 95:243-260. DOI:10.1007/s10533-009-9334-8
  84. Motegi, C. and Nagata, T. (2009) Addition of monomeric and polymeric organic substrates alleviates viral lytic pressure on bacterial communities in coastal seawaters. Aquatic Microbial Ecology 57: 343–350. DOI:10.3354/ame01365. Open Access
  85. Maki, K., Kim, C., Yoshimizu, C., Tayasu, I., Miyajima, T. and Nagata, T. (2010) Autochthonous origin of semi-labile dissolved organic carbon in a large monomictic lake (Lake Biwa): carbon stable isotopic evidence. Limnology. 11: 143-153. DOI:10.1007/s10201-009-0299-z
  86. Yokokawa, T. and Nagata, T. (2010) Linking bacterial community structure to carbon fluxes in marine environments. Journal of Oceanography 66:1-12. DOI:10.1007/s10872-010-0001-4
  87. Pradeep Ram, A.S., Nishimura, Y., Tomaru, Y., Nagasaki, K. and Nagata, T. (2010) Seasonal variation in viral-induced mortality of bacterioplankton in the water column of a large mesotrophic lake (Lake Biwa, Japan). Aquatic Microbial Ecology 58:249-259. DOI:10.3354/ame01381
  88. Yoshimizu, C., Yoshiyama, K., Tayasu, I., Koitabashi, T. and Nagata, T. (2010) Vulnerability of a large monomictic lake (Lake Biwa) to warm winter event. Limnology. 11:233-239 DOI:10.1007/s10201-009-0307-3
  89. Osaka, K., Ohte, N., Koba, K., Yoshimizu, C., Katsuyama, M., Tani, M., Tayasu, I. and Nagata, T. (2010) Hydrological influences on spatiotemporal variations of d15N and d18O of nitrate in a forested headwater catchment in central Japan: Denitrification plays a critical role in groundwater. Journal of Geophysical Research – Biogeosciences: DOI:10.1029/2009JG000977. Open Access
  90. Ohte, N., Tayasu, I., Kohzu, A., Yoshimizu, C., Osaka, K., Makabe, A., Koba, K., Yoshida, N. and Nagata, T. (2010) Spatial distribution of nitrate sources of rivers in the Lake Biwa watershed, Japan: Controlling factors revealed by nitrogen and oxygen isotope values. Water Resources Research: DOI: 10.1029/2009WR007871
  91. Karube, Z., Sakai, Y., Takeyama, T., Okuda, N., Kohzu, A., Yoshimizu, C., Nagata, T. and Tayasu, I. (2010) Carbon and nitrogen stable isotope ratios of macroinvertebrates in the littoral zone of Lake Biwa as indicators of anthropogenic activities in the watershed. Ecological Research. DOI 10.1007/s11284-010-0715-1
  92. Nagata, T., Tamburini, C., Arı´stegui, J., Baltar, F., Bochdansky, A., Fonda-Umani, S., Fukuda, H., Gogou, A., Hansell, D.A., Hansman R.L., Herndl G.J., Panagiotopoulos, C., Reinthaler, T., Sohrin, R., Verdugo, P., Yamada, N., Yamashita, Y., Yokokawa, T. and Bartlett, D.H. Emerging concepts on microbial processes in the bathypelagic ocean – ecology, biogeochemistry, and genomics. Deep-Sea Research II. 57(2010)1519-1536. DOI:10.1016/j.dsr2.2010.02.019
  93. Burd, A.B., Hansell, D.A., Steinberg, D.K., Anderson, T.R., Arı´stegui, J., Baltar, F., Beaupre´, S.R., Buesseler, K.O., DeHairs, F., Jackson, G.A., Kadko, D.C., Koppelmann, R., Lampitt, R.S., Nagata, T., Reinthaler, T., Robinson, C., Robison, B.H., Tamburini, C. and Tanaka, T. (2010) Assessing the apparent imbalance between geochemical and biochemicalindicators of meso- and bathypelagic biological activity: What the @$#! Is wrong with present calculations of carbon budgets? Deep- Sea Research II. 57: 1557-1571. DOI:10.1016/j.dsr2.2010.02.022
  94. Yang, Y., Motegi, C., Yokokawa, T. and Nagata, T. (2010) Large-scale distribution patterns of virioplankton in the upper ocean. Aquatic Microbial Ecology. 60: 233-246. DOI:10.3354/ame01428
  95. 永田 俊(2010)各種安定同位体を用いた流域窒素負荷の診断. 地球環境. 15 (2) 189-194.
  96. Ogawa, N. O., Nagata, T., Kitazato, H. and Ohkouchi, N. (2010) Ultra-sensitive elemental analyzer/isotope ratio mass spectrometer for stable nitrogen and carbon isotope analyses. In: Earth, Life, and Isotopes. (eds. Ohkouchi, N., Tayasu, I., and Koba, K.) pp. 339-353. Kyoto University Press.
  97. Kawasaki, N., Sohrin, R., Ogawa, H., Nagata, T. and Benner, R. (2011) Bacterial carbon content and the living and detrital bacterial contributions to suspended particulate organic carbon in the North Pacific Ocean. Aquatic Microbial Ecology. 62: 165-176. DOI:10.3354/ame01462
  98. Hosono, T., Wang, C-H., Umezawa, Y., Nakano, T., Onodera, S., Nagata, T., Yoshimizu, C., Tayasu, I. and Taniguchi, M. (2011) Multiple isotope (H, O, N, S and Sr) approach elucidates complex pollution causes in the shallow groundwaters of the Taipei urban area. Journal of Hydrology. 397: 23-36. DOI:10.1016/j.jhydrol.2010.11.025
  99. Itoh, M., Takemon, Y., Makabe, T., Yoshimizu, C., Khozu, A., Ohte, N., Tumurskh, D., Tayasu, I., Yoshida, N. and Nagata, T. (2011) Evaluation of wastewater nitrogen transformation in a natural wetland (Ulaanbaatar, Mongolia) using dual-isotope analysis of nitrate. Science of the Total Environment. 409:1530-1538. DOI:10.1016/j.scitotenv.2011.01.019
  100. Kojima, K., Murakami, M., Yoshimizu, C., Tayasu, I., Nagata, T. and Furumai, H. (2011) Evaluation of surface runoff and road dust as sources of nitrogen using nitrate isotopic composition. Chemosphere. 84: 1716-1722. DOI:10.1016/j.chemosphere.2011.04.071
  101. Uchimiya, M., Fukuda, H., Nishino, S., Kikuchi, T., Ogawa, H. and Nagata, T. (2011) Does freshening of surface water enhance heterotrophic prokaryote production in the western Arctic? Empirical evidence from the Canada Basin during September 2009. Journal of Oceanography.67: 589-599. DOI:10.1007/s10872-011-0059-7
  102. Okuda, N., Takeyama, T., Komiya, T., Kato, Y., Okuzaki, Y., Karube, J., Sakai Y., Hori M., Tayasu, I. and Nagata, T. (2012) A food web and its long-term dynamics in Lake Biwa: a stable isotope approach. In: Lake Biwa: Interactions between Nature and People. (eds. by Kawanabe, H., Nishino, M., and Maehata, M.) pp.205-210. Springer Science + Business Media B.V. DOI:10.1007/978-94-007-1783-1
  103. 永田 俊・吉山 浩平 (2012) 序章 温暖化時代の湖沼学. In:「温暖化の湖沼学」(永田 俊・熊谷 道夫・吉山 浩平編) pp.1-15.京都大学学術出版会
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  105. 永田 俊・伴 修平 (2012) 3.2章(3) 栄養塩の再生. In:「温暖化の湖沼学」(永田 俊・熊谷 道夫・吉山 浩平編) pp.146-150. 京都大学学術出版会
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  107. 吉山 浩平・永田 俊 (2012) 4.2章 温暖化影響評価の汎用的な指標. In:「温暖化の湖沼学」(永田 俊・熊谷 道夫・吉山 浩平編) pp.242-249. 京都大学学術出版会
  108. 永田 俊・吉山 浩平 (2012) 4.3章 今後の課題. In:「温暖化の湖沼学」(永田 俊・熊谷 道夫・吉山 浩平編) pp.249-251.京都大学学術出版会
  109. 永田 俊 (2012) コラム4 自生性有機物と他生性有機物. In:「温暖化の湖沼学」(永田 俊・熊谷 道夫・吉山 浩平編) p.212京都大学学術出版会
  110. 永田 俊(2012) 4.1章 窒素の排出源の特定. In: 「森林の窒素飽和と流域管理」(古米 弘明・川上 智規・酒井 憲司)pp.83-92 技報堂出版
  111. Uchimiya, M., Fukuda, H., Nishino, S., Kikuchi, T., Ogawa, H. and Nagata, T. (2013) Vertical distribution of prokaryote production and abundance in the mesopelagic and bathypelagic layers of the Canada Basin, western Arctic: Implications for the mode and extent of organic carbon delivery. Deep-Sea Research I. 71: 103–112. DOI:10.1016/j.dsr.2012.10.001
  112. Yokokawa, T., Yang, Y., Motegi, C. and Nagata, T. (2013) Large-scale geographical variation in prokaryotic abundance and production in meso- and bathypelagic zones of the central Pacific and Southern Ocean. Limnology and Oceanography. 58(1): 61–73. DOI:10.4319/lo.2013.58.1.0061. Open Access
  113. Sakai, Y., Karube, Z., Takeyama, T., Kohzu, A., Yoshimizu, C., Nagata, T., Tayasu, I. and Okuda, N. (2013) Seasonal and site-specific variability in terrigenous particulate organic carbon concentration in near-shore waters of Lake Biwa, Japan, Limnology. 14:167-177. DOI:10.1007/s10201-012-0394-4
  114. Sano, M., Maki, K., Nishibe, Y., Nagata, T. and Nishida, S. (2013) Feeding habits of mesopelagic copepods in Sagami Bay: Insights from integrative analysis. Progress in Oceanography. 110: 11-26. DOI:10.1016/j.pocean.2013.01.004
  115. Thibodeau, B., Miyajima, T., Tayasu, I., Wyatt, A.S.J., Watanabe, A., Morimoto, M., Yoshimizu, C. and Nagata, T. (2013) Heterogeneous dissolved organic nitrogen supply over a coral reel: first evidence from nitrogen stable isotope ratios. Coral Reefs, DOI:10.1007/s00338-1070-9
  116. Yamada, Y., Fukuda, H., Inoue, K., Kogure, K. and Nagata, T. (2013) Effects of attached bacteria on organic aggregate settling velocity in seawater. Aquatic Microbial Ecology 70: 261-272. DOI:10.3354/ame01658. Open Access
  117. Motegi, C., Nagata, T., Miki, T., Weinbauer, M.G., Legendre, L. and Rassoulzadegan, F. (2013) Interactive effects of viral and bacterial production on marine bacterial diversity. PLoS ONE 8(11): e76800.DOI:10.1371/journal.pone. 0076800
  118. Yang, Y., Yokokawa, T., Motegi, C. and Nagata, T. (2014) Large-scale distribution of viruses in deep waters of the Pacific and Southern Oceans. Aquatic Microbial Ecology, 71: 193-202. DOI:10.3354/ame01677. Open Access
  119. Shiozaki, T., Itoh, S., Takahashi, K., Saito, H., Nagata, T. and Furuya, K. (2014) Regional variability of factors controlling the onset timing and magnitude of spring algal blooms in the northwestern North Pacific. Journal of Geophysical Research: Oceans, 119: DOI:10.1002/2013JC009187. Open Access
  120. Maki, K., Ohkouchi, N., Chikaraishi, Y., Fukuda, H., Miyajima, T. and Nagata, T. (2014) Influence of nitrogen substrates and substrate C:N ratios on the nitrogen isotopic composition of amino acids from the marine bacterium Vibrio harveyi. Geochimica et Cosmochimica Acta, 140: 521-530. DOI:10.1016/j.gca.2014.05.052
  121. Hasumi, Y. and Nagata, T. (2014) Modelling the global cycle of marine dissolved organic matter and its influence on marine productivity. Ecological Modelling, 288: 9-24. DOI:10.1016/j.ecolmodel.2014.05.009
  122. Uchimiya, M., Ogawa, H. and Nagata, T. (2015) Effects of temperature-elevation and glucose-addition on prokaryotic production and respiration in the mesopelagic layer of the western North Pacific. Journal of Oceanography, DOI:10.1007/s10872-015-0294-4
  123. Fukuda, H., Katayama, R., Yang, Y., Takasu, H., Nishibe, Y., Tsuda, A. and Nagata, T. (2015) Nutrient status of Otsuchi Bay (northeastern Japan) following the 2011 off the Pacific coast of Tohoku Earthquake. Journal of Oceanography. DOI:10.1007/s10872-015-0296-2
  124. Kusuno, H., Matsuzakia, H., Nagata, T., Miyairi, Y., Yokoyama, Y. and Ohkouchi, N. (2015) An approach for measuring the 129I/127I ratio in fish samples. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms DOI:10.1016/j.nimb.2015.04.074
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  128. Yamada, Y., Fukuda, H., Uchimiya, M., Motegi, C., Nishino, N., Kikuchi, T. and Nagata, T. (2015) Localized accumulation and a shelf-basin gradient of particles in the Chukchi Sea and Canada Basin, western Arctic. Journal of Geophysical Research: Oceans. 120, DOI: 10.1002/2015JC010794. Open Access
  129. Shiozaki, T., Nagata, T., Ijichi, M. and Furuya, K. (2015) Nitrogen fixation and the diazotroph community in the temperate coastal region of the northwestern North Pacific. Biogeosciences. 12: 4751-4764, DOI:10.5194/bg-12-4751-2015
  130. Ohkouchi N., Shibata, H., Chikaraishi, Y., Nomaki, H., Ogawa, N., Nagata, T., Goto, T., Fujikura, K., and Kitazato, H. (2016) A monitoring result of polychlorinated biphenyls (PCBs) in deep-sea organisms and sediments off Tohoku during 2012–2014: temporal variation and the relationship with the trophic position. Journal of Oceanography. DOI: 10.1007/s10872-016-0359-z
  131. Yamada, Y., Fukuda, H., Tada, Y., Kogure, K. and Nagata, T. (2016) Bacterial enhancement of gel particle coagulation in seawater, Aquatic Microbial Ecology. 77:11-22. DOI: 10.3354/ame01784
  132. Uchimiya, M., Motegi, C., Nishino, S., Kawaguchi, Y., Inoue, J., Ogawa, H., and Nagata, T. (2016) Coupled Response of Bacterial Production to a Wind-induced Fall Phytoplankton Bloom and Sediment Resuspension in the Chukchi Sea Shelf, Western Arctic Ocean. Frontiers in Marine Science. Marine Biogeochemistry. DOI: 10.3389/fmars.2016.00231
  133. Kaneko, R., Nagata, T., Suzuki, S. and Hamasaki, H. (2016) Depth‑dependent and seasonal variability in archaeal community structure in the subarctic and subtropical western North Pacific. Journal of Oceanography. 72:427–438. DOI: 10.1007/s10872-016-0372-2
  134. 福田秀樹・楊 燕輝・高須裕之・西部裕一郎・立花愛子・津田 敦・永田 俊 (2016) 2011年東北地方太平洋沖地震以降5年間の三陸沿岸大槌湾における栄養塩環境の変化. 沿岸海洋研究 54(2) : 105-116.
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  136. Honda, M. C., Wakita, M., Matsumoto, K., Fujiki, T., Siswanto, E., Sasaoka, K., Kawakami, H., Min,o Y., Sukigara, C., Kitamura, M., Sasai, Y., Smith, L. S., Hashioka, T., Yoshikawa, C., Kimoto, K., Watanabe, S., Kobari, T., Nagata, T., Hamasaki, K., Kaneko, R., Uchimiya, M., Fukuda, H., Abe, O., and Saino T., (2017) Comparison of carbon cycle between the western Pacific subarctic and subtropical time‑series stations: highlights of the K2S1 project. Journal of Oceanography. DOI: 10.1007/s10872-017-0423-3