Influences of climate change on nutrient dynamics in the East China Sea and Seto Inland Sea

2012 Fiscal Year Final Research Report

• Project/Area Number: 21310012
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Environmental dynamic analysis
• Research Institution: Ehime University
• Principal Investigator: GUO Xinyu 愛媛大学, 沿岸環境科学研究センター, 准教授 (10322273)
• Co-Investigator(Kenkyū-buntansha): TAKEOKA Hidetaka 愛媛大学, 沿岸環境科学研究センター, 教授 (90116947) ; YOSHIE Naoki 愛媛大学, 沿岸環境科学研究センター, 講師 (50374640) ; KIMURA Noriaki 愛媛大学, 沿岸環境科学研究センター, グローバルCOE研究員 (20374647) ; ONO Jun 愛媛大学, 沿岸環境科学研究センター, 学術研究員 (20451411) ; SAITO Mitsuyo 愛媛大学, 沿岸環境科学研究センター, 研究機関研究員 (20512718) ; KOMORITA Tomohiro 愛媛大学, 沿岸環境科学研究センター, 研究機関研究員 (10554470)
• Co-Investigator(Renkei-kenkyūsha): MIYAZAWA Yasumasa 独立行政法人海洋研究開発機構, 地球環境変動領域, チームリーダー (90399577)
• Project Period (FY): 2009 – 2012
• Keywords: 物質循環 / 海洋科学 / 栄養塩輸送 / 外洋起源栄養塩

Research Abstract

We developed a low-trophic ecosystem model for the East China Sea and Seto Inland Sea, respectively, clarified the transport and cycle processes of land-source and ocean-source nutrients, and calculated their contributions to annual primary production in the seas. Using historical observation data, we revealed the spatial and temporal variations in nutrient transport by the Kuroshio and the temporal variations of nutrient concentration in the middle layer of Kuroshio region, which is a background faced by two coastal seas. Furthermore, using numerical experiments, we examined the responses of standing stock of nutrients and primary in the seas to the concentration change of nutrients in the Kuroshio region and from land.

Research Products

• [Journal Article] 大潮・小潮に連動する潮汐フロント,底部冷水と河口循環流 (2013)
  • Author(s): 郭新宇・于暁杰・武岡英隆
  • Journal Title: 沿岸海洋研究 Volume: 50 Pages: 131-140
  • Peer Reviewed
• [Journal Article] The Kuroshio nutrient stream and its temporal variation in the East China Sea. (2012)
  • Author(s): Guo, X., Zhu, X.-H., Wu, Q.-S., and Huang, D.
  • Journal Title: Journal of Geophysical Research-Oceans Volume: 117 Pages: C01026
  • DOI: DOI:10.1029/2011JC007292
  • Peer Reviewed
• [Journal Article] A numerical study on the seasonal variability of polychlorinated biphenyls from the atmosphere in the East China Sea (2012)
  • Author(s): Ono, J., Takahashi, D., Guo, X., Takahashi, S., Takeoka, H.
  • Journal Title: Chemosphere Volume: 89 Pages: 389397
  • Peer Reviewed
• [Journal Article] Variations of the water temperature offshore the Changjiang River Estuary in winters and springs. (2012)
  • Author(s): Hu, Y., Zhao, L., Guo, X., Wei, H.
  • Journal Title: Oceanologia et Limnologia Sinica Volume: 43 Pages: 655-661
  • Peer Reviewed
• [Journal Article] Open and coastal sea interactions south of Japan detected by an ensemble Kalman Filter. (2012)
  • Author(s): Miyazawa, Y., Miyama, T., Varlamov, S. M., Guo, X., and Waseda, T.
  • Journal Title: Ocean Dynamics Volume: 62 Pages: 645-659
  • DOI: DOI:10.1007/s10236-011-0516-2.
  • Peer Reviewed
• [Journal Article] Modeling of suspended particulate matter in the East China Sea. Advanced Environmental Studies by Young Scientist (2012)
  • Author(s): Ono, J. and Guo, X, Kawaguchi, M., Misaki, K., Sato, H., Yokokawa, T., Itai, T., Tue, N. M., Ono, J. and Tanabe, S
  • Journal Title: Interdisciplinary Studies on Environmental Chemistry,TERRAPUB Volume: Vol. 6 Pages: 311-320
  • Peer Reviewed
• [Journal Article] Seasonal variation of the 222Rn concentration in the central part of the Seto Inland Sea, Japan ,Advanced Environmental Studies by Young Scientist (2012)
  • Author(s): Saito, M., Onodera, S., Guo, X., Onishi, K., Shimizu, Y., Yoshikawa, M., Jin, G., Tokumasu, M. and Takeoka, H, Kawaguchi, M., Misaki, K., Sato, H., Yokokawa, T., Itai, T., Tue, N. M., Ono, J. and Tanabe, S
  • Journal Title: Interdisciplinary Studies on Environmental Chemistry, TERRAPUB Volume: Vol. 6 Pages: 339-344
  • Peer Reviewed
• [Journal Article] Influence of cross-shelf water transport on nutrients and phytoplankton in the East China Sea: a model study. (2011)
  • Author(s): Zhao, L., and Guo, X
  • Journal Title: Ocean Science Volume: 7 Pages: 27-43
  • DOI: DOI:10.5194/os-7-27-2011.
  • Peer Reviewed
• [Journal Article] 東シナ海における外洋起源栄養塩の輸送量と低次生態系への影響 (2011)
  • Author(s): 郭新宇
  • Journal Title: 水環境学会誌 Volume: 34 Pages: 293-296
• [Journal Article] Response of nutrients and primary production over the shelf in the East China Sea to the reduction of oceanic nutrient supply. Modeling and Analysis of Marine Environmental Problems (2011)
  • Author(s): Guo, X. and Zhao, L. Omori, K., Guo, X., Yoshie, N., Fujii, N., Handoh, I. C. Isobe, A. and Tanabe, S
  • Journal Title: Interdisciplinary Studies on Environmental Chemistry, TERRAPUB Volume: Vol. 5 Pages: 19-30
  • Peer Reviewed
• [Journal Article] Ecosystem and nutrient dynamics in the Seto Inland Sea, Japan. Modeling and Analysis of Marine Environmental Problems (2011)
  • Author(s): Yoshie, N., Guo, X., Fujii, N. and Komorita, T, Omori, K., Guo, X., Yoshie, N., Fujii, N., Handoh, I. C., Isobe, A. and Tanabe, S
  • Journal Title: Interdisciplinary Studies on Environmental Chemistry, TERRAPUB Volume: Vol. 5 Pages: 39-49
  • Peer Reviewed
• [Journal Article] Spatial variation of submarine groundwater discharge (SGD) in the central part of Seto Inland Sea. Modeling and Analysis of Marine Environmental Problems (2011)
  • Author(s): Saito, M., Guo, X., Onodera, S., Shimizu, Y., Kato, Y., Tokumasu, M. and Takeoka, H. Omori, K., Guo, X., Yoshie, N., Fujii, N., Handoh, I. C., Isobe, A. and Tanabe, S
  • Journal Title: Interdisciplinary Studies on Environmental Chemistry, TERRAPUB Volume: Vol. 5 Pages: 117-123
  • Peer Reviewed
• [Journal Article] 2007年宇和海下波湾における有害渦鞭毛藻Karenia mikimotoi赤潮の底入り潮の発生による消滅 (2010)
  • Author(s): 兼田淳史・小泉喜嗣・高橋大介・福森香代子・郭新宇・武岡英隆
  • Journal Title: 水産海洋研究 Volume: 74 Pages: 167-175
  • Peer Reviewed
• [Journal Article] 入れ子手法による沿岸海洋モデリング (2010)
  • Author(s): 郭新宇・Varlamov,S.M.・宮澤泰正
  • Journal Title: 沿岸海洋研究 Volume: 47 Pages: 113-123
  • Peer Reviewed
• [Journal Article] Autumn intensification of the Ryukyu Current during 2003-2007. (2010)
  • Author(s): Zhu, X., Huang, D., and Guo, X
  • Journal Title: Science in China Series D: Earth Sciences Volume: 53 Pages: 1-7
  • DOI: DOI:10.1007/s11430-010-0022-2
  • Peer Reviewed
• [Journal Article] A numerical study on the seasonal circulation in the Seto Inland Sea, Japan (2009)
  • Author(s): Chang, P.-H., Guo, X., and Takeoka, H
  • Journal Title: Journal of Oceanography Volume: 65 Pages: 721-736
  • Peer Reviewed
• [Journal Article] The vertical attenuation of irradiance as a function of turbidity: a case of the Yellow Sea in spring. (2009)
  • Author(s): Lin, S., Zou, T., Gao, H., and Guo, X.
  • Journal Title: cta Oceanologica Sinica Volume: 28 Pages: 66-75
  • Peer Reviewed
• [Journal Article] Asymmetries in tidal flow over a Seto Inland Sea scour pit. (2009)
  • Author(s): Valle-Levinson, A., and Guo, X
  • Journal Title: Journal of Marine Research Volume: 67 Pages: 619-635
  • Peer Reviewed
• [Journal Article] Biweekly periodic variation of the Kuroshio axis northeast of Taiwan as revealed by ocean high-frequency radar. (2009)
  • Author(s): Takahashi, D., Guo, X., Morimoto, A., and Kojima, S.
  • Journal Title: Continental Shelf Research Volume: 29 Pages: 1896-1907
  • Peer Reviewed
• [Journal Article] Water mass variability in the western North Pacific detected in a 15-year eddy resolving ocean reanalysis (2009)
  • Author(s): Miyazawa, Y., Zhang, R., Guo, X., Tamura, H., Ambe, D., Lee, J.-S., Okuno, A., Yoshinari, H., Setou, T., and Komatsu, K
  • Journal Title: Journal of Oceanography Volume: 65 Pages: 737-756
  • Peer Reviewed
• [Presentation] Interannual variability in the sea level and Kuroshio transport in the East China Sea detected by a data assimilation ocean model (2012)
  • Author(s): Guo, X., Soeyanto, E., Ono, J., and Miyazawa, Y.
  • Organizer: AOGS-AGU(WPGM)Joint Assembly2012
  • Place of Presentation: Singapore.
  • Year and Date: 2012-08-19
• [Presentation] Competition of a local cyclonic eddy and estuarine circulation in the Iyo-nada, Seto Inland Sea, Japan. (2012)
  • Author(s): Guo, X., Yu, X., Chang, P. H., Takahashi, D., Futamura, A., Takeoka, H
  • Organizer: 2012 ASLO aquatic sciences meeting.
  • Place of Presentation: Lake Biwa, Shiga
  • Year and Date: 2012-07-10
• [Presentation] Spatial and temporal variation of submarine groundwater discharge (SGD) in semi-enclosed coastal sea, western Japan. (2012)
  • Author(s): Saito, M., Onodera, S., Guo, X., Onishi, K., Yoshikawa, M., Jin, G., Shimizu, Y., Tokumasu, M. and Takeoka, H
  • Organizer: 2012 ASLO aquatic sciences meeting
  • Place of Presentation: Lake Biwa, Shiga
  • Year and Date: 2012-07-09
• [Presentation] Ecosystem responses to the oceanic water intrusion in Bungo Channel, Japan (2012)
  • Author(s): Yoshie, N., Fujii, N., Guo, X., Komorita, T., Yokokawa, T., and Isobe, A.
  • Organizer: 50th Estuarine Coastal and Shelf Science.
  • Place of Presentation: Venice, Italy.
  • Year and Date: 2012-06-06
• [Presentation] Downstream nutrient transport by the Kuroshio in the East China Sea and its temporal variations (2012)
  • Author(s): Guo, X., Zhu, X., Huang, D. and Wu, Q
  • Organizer: 2012 Ocean Science Meeting.
  • Place of Presentation: Salt Lake City, USA.
  • Year and Date: 2012-02-22
• [Presentation] Seasonal and tidal variations of suspended particulate matter in the East China Sea. (2012)
  • Author(s): Ono, J., and Guo, X.
  • Organizer: 2012 Ocean Science Meeting
  • Place of Presentation: Salt Lake City, USA.
  • Year and Date: 2012-02-22
• [Presentation] Phytoplankton and nutrient dynamics in the western Seto Inland Sea, Japan based on observation and a modified NEMURO model (2011)
  • Author(s): Yoshie, N., Guo, X., Fujii, N. and Komorita, T
  • Organizer: PICES-2011 (North Pacific Marine Science Organization).
  • Place of Presentation: Khabarovsk, Russia
  • Year and Date: 2011-10-27
• [Presentation] Detailed monitoring of nutrient supply through tidal front in Seto Inland Sea, Japan. (2011)
  • Author(s): Komorita, T., Guo, X., Yoshie, N., Fujii, N., and Takeoka, H
  • Organizer: EMECS9 Global Summit on Coastal Seas.
  • Place of Presentation: Baltimore, USA.
  • Year and Date: 2011-09-01
• [Presentation] Transport of oceanic nutrients and its influences on primary production over the shelf in the East China Sea (2011)
  • Author(s): Guo, X. and Zhao, L
  • Organizer: The XXV IUGG General Assembly 2011(招待講演).
  • Place of Presentation: Melbourne, Australia.
  • Year and Date: 2011-06-30
• [Presentation] Tracer transport modeling on Kuroshio subsurface water intrusion onto the shelf of East China Sea. (2011)
  • Author(s): Guo, X. and Zhang, J
  • Organizer: The 43rd International Liege Colloquium on Ocean Dynamics.
  • Place of Presentation: Liege, Belgium
  • Year and Date: 2011-05-04
• [Presentation] 夏季の伊予灘における底部冷水I (2010)
  • Author(s): 郭新宇・藤井直紀・小森田智大・吉江直樹・武岡英隆
  • Organizer: 物理構造. 2010年度日本海洋学会春季大会
  • Place of Presentation: 東京
  • Year and Date: 2010-03-27
• [Presentation] 夏季の伊予灘における底部冷水II:栄養塩動態 (2010)
  • Author(s): 小森田智大・郭新宇・藤井直紀・吉江直樹・武岡英隆
  • Organizer: 2010年度日本海洋学会春季大会
  • Place of Presentation: 東京
  • Year and Date: 2010-03-27
• [Presentation] 夏季の伊予灘における底部冷水III:植物プランクトン. (2010)
  • Author(s): 吉江直樹・藤井直紀・小森田智大・郭新宇・武岡英隆
  • Organizer: 2010年度日本海洋学会春季大会
  • Place of Presentation: 東京
  • Year and Date: 2010-03-27
• [Presentation] 夏季の伊予灘における底部冷水IV:動物プランクトン (2010)
  • Author(s): 藤井直紀・郭新宇・小森田智大・吉江直樹・武岡英隆
  • Organizer: 2010年度日本海洋学会春季大会
  • Place of Presentation: 東京
  • Year and Date: 2010-03-27
• [Presentation] Simulation of seasonal variations of Chlorophyll in the Yellow and East China Seas (2009)
  • Author(s): Guo, X. and Zhao, L
  • Organizer: MOCA-09.
  • Place of Presentation: Montreal, Canada.
  • Year and Date: 2009-07-20