• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Study on the long-term monitoring of the marine environments in the Seto Inland Sea and their predictions

Research Project

Project/Area Number 12308027
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Research Field Environmental dynamic analysis
Research InstitutionEhime University

Principal Investigator

TAKEOKA Hidetaka  Ehime University, Center for Marine Environmental Studies, Professor, 沿岸環境科学研究センター, 教授 (90116947)

Co-Investigator(Kenkyū-buntansha) SUZUKI Satoru  Ehime University, Center for Marine Environmental Studies, Professor, 沿岸環境科学研究センター, 教授 (90196816)
INOUCHI Yoshio  Ehime University, Center for Marine Environmental Studies, Professor, 沿岸環境科学研究センター, 教授 (00294786)
TANABE Shinsuke  Ehime University, Center for Marine Environmental Studies, Professor, 沿岸環境科学研究センター, 教授 (60116952)
TAKEUCHI Ichiro  Ehime University, Departoment of Agriculture, Professor, 農学部, 教授 (30212020)
UEDA Hiroshi  Ehime University, Center for Marine Environmental Studies, Associate Professor, 沿岸環境科学研究センター, 助教授 (00128472)
Project Period (FY) 2000 – 2003
Project Status Completed (Fiscal Year 2003)
Budget Amount *help
¥26,260,000 (Direct Cost: ¥20,200,000、Indirect Cost: ¥6,060,000)
Fiscal Year 2003: ¥6,630,000 (Direct Cost: ¥5,100,000、Indirect Cost: ¥1,530,000)
Fiscal Year 2002: ¥10,010,000 (Direct Cost: ¥7,700,000、Indirect Cost: ¥2,310,000)
Fiscal Year 2001: ¥9,620,000 (Direct Cost: ¥7,400,000、Indirect Cost: ¥2,220,000)
KeywordsSeto Inland Sea / Ion-term variation / nurients / marine pollution / marine ecosystem / monitoring / モンタリング
Research Abstract

In this project, long-term monitoring of water quality including nutrients was conducted at the tip of Sada Peninsula by using the autonomous monitoring system. The long-term environmental variations of nearby areas were analysed by using the historical data and the sediment samples. Moreover, the structure of the ecosystem at present were surveyed.
The major results relating to the nutrient environments of the Seto Inland Sea are as follow. (1) More than 60% of the nitrogen and phosphorous in the Seto Inland Sea are originated from the Pacific ocean. In case of Bungo Channel, supply of the nutrients from the Pacific Ocean is mainly carried out by the intrusion of cold, nutrient-rich water mass from the bottom layer of the shelf slope region south of the channel. (2)The intrusion of the nutrients into Bungo Channel varied at the decadal time scale. It generally decreased from 1980 to 2000, resulting in the decreases of the nutrient concentration and the spieces diversity of phytoplankton in Iyo-Nada.
These are very important results showing the high possibility that the nutrient conditions and the ecosystems in the Seto Inland Sea can vary due to the variations of global ocean circulation, and supporting the significance of our long-term nutrient monitoring.
The analyses of the sediment samples in the Bungo Channel revealed the state of recent pollutions by organic matter and organotin due to the fish culture. Surveys of the sand dune areas peculiar to the Seto Inaldn Sea were conducted, and some roles of the sand dunes in the enhancement of primary production and material cycling in the ecosystem. Moreover, the microbe surveys in Bungo Channel revealed some part of the variations of microbial loop due to the oceanic disturbances such as the kyucho and the bottom intrusion. These result will provide the important reference data in the future research verifying the long-term variations of the environments and ecosystems in the Seto Inland Sea.

Report

(5 results)
  • 2003 Annual Research Report   Final Research Report Summary
  • 2002 Annual Research Report
  • 2001 Annual Research Report
  • 2000 Annual Research Report
  • Research Products

    (35 results)

All Other

All Publications (35 results)

  • [Publications] 武岡英隆, 速水祐一, 兼田淳史, 松下太郎, 紀本岳志, 渡辺浩三, 藤川淳一: "瀬戸内海の栄養塩環境の長期自動モニタリング"沿岸海洋研究. 38. 91-97 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] I.Takeuchi, A.Takahashi, A.Tanabe, N.Miyazaki: "Caprella watch : a new approach for monitoring butyltin residues in the ocean"Marine Environmental Research. 52. 97-113 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] A.Kaneda, H.Takeoka, Y.Koizumi: "Periodic occurrence of diurnal signal of ADCP backscatter strength in Uchiumi Bay, Japan"Estuarine, Coastal and Shelf Science. 55. 323-330 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Tomoki Hashimoto, Shin-ichi Nakano: "Effect of nutrient limitation on abundance and growth of phytoplankton in a Japanese pearl farm"Marine Ecology Progress Series. 258. 45-50 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Masashi Onji, Shin-ichi Nakano, Satoru Suzuki: "Virus-like particles suppress growth of the red-tide-forming marine dinoflagellate Gymnodinium mikimotoi"Marine Biotechnology. 5. 435-442 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] K.Omori, R.Fukumoto, N.Okuda, Y.Mishima, K.Yoshino: "Primary production structure and energy flow of coastal ecosystem in Aki-Nada along the coast of the Shikoku Island, Japan"Marine Pollution Bulletin. (印刷中). (2004)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] H.Takeoka, Y.Hayami, A.Kaneda, T.Matsushita, T.Kimoto, K.Watanabe, J.Fujikawa: "Long-term autonomous nutrient monitoring in the Seto Inland Sea (in Japanese)"Bulletin on Coastal Oceanography. 38. 91-97 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] I.Takeuchi, A.Takahashi, A.Tanabe, N.Miyazaki: "Caprella watch : a new approach for monitoring butyltin residues in the ocean"Marine Environmental Research. 52. 97-113 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] A.Kaneda, H.Takeoka, Y.Koizumi: "Periodic occurrence of diumal signal of ADCP backscatter strength in Uchiumi Bay, Japan"Estuarine, Coastal and Shelf Science. 55. 323-330 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] T.Hashimoto, S.Nakano: "Effect of nutrient limitation on abundance and growth of phytoplankton in a Japanese pearl farm"Marine Ecology Progress Series. 258. 43-50 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] M.Onji, S.Nakano, S.Suzuki: "Virus-like particles suppress growth of the red-tide-forming marine dinoflagellate Gymnodinium mikimotoi"Marine Biotechnology. 5. 435-442 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] K.Omori, R.Fukumoto, N.Okuda, Y.Mishima, K.Yoshino: "Primary production structure and energy flow of coastal ecosystem in Aki-Nada along the coast of the Shikoku Island, Japan"Marine Pollution Bulletin. (in press). (2004)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] 酒井大樹, 笠井梨恵, 高橋 真, 田辺信介: "ブチルスズ化合物による宇和海沿岸堆積物および養殖魚介類の汚染"日本水産学会誌. 69(1). 10-22 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] I.Takeuchi, S.Takahashi, S.Tanabe, N.Miyazaki: "Butyltin concentrations along the Japanese coast from 1997 to 1999 monitored by Caprella spp. (Crustacea : Amphipoda)"Marine Environmental Research. 印刷中. (2004)

    • Related Report
      2003 Annual Research Report
  • [Publications] Tatsuo Miyoshi, Satoru Suzuki: "Degradation of outer membrane proteins of Synechococcus sp. in vitro and in situ"Journal of Oceanography. 印刷中. (2004)

    • Related Report
      2003 Annual Research Report
  • [Publications] Tomoki Hashimoto, Shin-ichi Nakano: "Effect of nutrient limitation on abundance and growth of phytoplankton in a Japanese pearl farm"Marine Ecology Progress Series. 258. 43-50 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Masashi Onji, Shin-ichi Nakano, Satoru Suzuki: "Virus-like particles suppress growth of the red-tide-forming marine dinoflagellate Gymnodinium mikimotoi"Marine Biotechnology. 5. 435-442 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] K.Omori, R.Fukumoto, N.Okuda, Y.Mishima, K.Yoshino: "Primary production structure and energy flow of coastal ecosystem in Aki-Nada along the coast of the Shikoku Island, Japan"Marine Pollution Bulletin. 印刷中. (2004)

    • Related Report
      2003 Annual Research Report
  • [Publications] 武岡英隆, 菊池隆展, 速水祐一, 榊原哲郎: "瀬戸内海における外洋起源の栄養物質"月刊海洋. 34-6. 406-411 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] 福田 久, 郭 新宇, 山形俊男: "紀南分岐流(振り分け潮)の数値モデル研究"海の研究. 11-5. 513-527 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] A.Kaneda, H.Takeoka, Y.Koizumi: "Periodic Occurrence of Diurnal Signal of ADCP Backscatter Strength in Uchiumi Bay, Japan"Estuarine, Coastal and Shelf Science. 55. 323-330 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] 久保田彰, 染矢雅之, 渡部真文, 田辺信介: "PCBsおよびダイオキシン類(ポリ塩化ジベンゾ-p-ダイオキシン,ポリ塩化ジベンゾフラン,コプラナPCBs)による宇和海沿岸堆積物の汚染"日本水産学会誌. 68-5. 695-700 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] 酒井大樹, 笠井梨恵, 高橋 真, 田辺信介: "ブチルスズ化合物による宇和海沿岸堆積物および養殖魚介類の汚染"日本水産学会誌. 69-1. 10-22 (2003)

    • Related Report
      2002 Annual Research Report
  • [Publications] Tomaru, Y., Udaka, N., Kawabata, Z., Nakano, S.: "Seasonal change of seston size distribution and phytoplankton composition in bivalve pearl oyster Pinctada fucata martensii culture farm"Hydrobiologia. 481-1. 181-185 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] 武岡 英隆: "瀬戸内海の栄養塩環境の長期自動モニタリング"沿岸海洋研究. 38. 91-97

    • Related Report
      2001 Annual Research Report
  • [Publications] 武岡 英隆: "瀬戸内海の栄養塩環境の長期変動"地球環境. 6・1. 3-12 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] 武岡 英隆: "瀬戸内海における外洋起源の栄養物質"月刊海洋. (印刷中). (2002)

    • Related Report
      2001 Annual Research Report
  • [Publications] 竹内 一郎: "日本沿岸におけるワレカラ類(甲殻網:端脚目)の種多様性について"地球環境. 6・1. 61-67 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Ichiro Takeuchi: "Caprella watch : a new approach for monitoring butyltin residues in the ocean"Marine Environmental Research. 52. 97-113 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Atsushi Kaneda: "Periodic occurrence of diurnal signal of ADCP backscatter strength in Uchiumi Bay"Estuarine Coastal and Shelf Science. (印刷中). (2002)

    • Related Report
      2001 Annual Research Report
  • [Publications] 兼田淳史: "黒潮の離接岸が豊後水道の水温に与える影響"沿岸海洋研究. (印刷中). (2002)

    • Related Report
      2001 Annual Research Report
  • [Publications] Tomaru Y: "Effect of water temperature and chloropyll abundance on shell growth of the Japanese pearl oyster, Pinctada fucata martensii, in suspended culture at different depths and sites"Aquaculture Res.. (印刷中). (2002)

    • Related Report
      2001 Annual Research Report
  • [Publications] 天野敦子: "海底堆積物から見た愛媛県宇和海の過去100年間の環境変遷"第11回環境地質学シンポジウム論文集. 265-270 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] 武岡英隆: "瀬戸内海の栄養塩環境の長期変動"地球環境. (印刷中). (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] Takeuchi I.: "Caprella watch ; a new approach for monitoring butyltin residue in the ocean"Marine Environmental Research. (印刷中). (2001)

    • Related Report
      2000 Annual Research Report

URL: 

Published: 2001-04-01   Modified: 2016-04-21  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi