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Characteristics of water conditions in the inner part of Ariake Bay with hypoxic water and red tide and causes of decline of the ecosystem on the tidal flats faced to the bay.

Research Project

Project/Area Number 17310012
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Environmental dynamic analysis
Research InstitutionPrefectural University of Kumamoto

Principal Investigator

TSUTSUMI Hiroaki  Prefectural University of Kumamoto, Faculty of Environmental and Symbiotic Sciences, Professor (50197737)

Co-Investigator(Kenkyū-buntansha) SHINOHARA Ryota  Prefectural University of Kumamoto, Faculty of Environmental and Symbiotic Sciences, Professor (40316188)
KOGA Minoru  Prefectural University of Kumamoto, Faculty of Environmental and Symbiotic Sciences, Professor (40131916)
MONTANI Shigeru  Hokkaido University, Graduate School of Fisheries Sciences, Professor (30136288)
Project Period (FY) 2005 – 2007
Project Status Completed (Fiscal Year 2007)
Budget Amount *help
¥16,700,000 (Direct Cost: ¥15,500,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2007: ¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2006: ¥5,600,000 (Direct Cost: ¥5,600,000)
Fiscal Year 2005: ¥5,900,000 (Direct Cost: ¥5,900,000)
KeywordsAriake Bay / Red tide / Hvpoxic water / 貧酸素 / 干潟 / アサリ
Research Abstract

The water conditions were monitored monthly or biweekly at 9 to 12 sampling stations in the inner part of Ariake Bay from April 2005 to December 2007. At four of these sampling stations, which are located in the innermost areas of the bay, the benthic communities were assessed quantitatively at the same sampling occasions. In this bay, hypoxic water occurred between the end of July after the rainy season and August in the innermost areas of less than 20 m in depth every year. On August 5, 2006, the most severe decrease of DO occurred in these areas. In the middle layer of the water, anoxic water was formed, and DO of the bottom water also fall to the levels of less than 1 mg/L. In this time, the surface water stood over 30℃, and the phytoplankton, mainly diatoms that bloomed during the rainy season, died due to the extremely high water temperature. The dead body of the phytoplankton became large amounts of dead organic particles suspended in the water, and was being decomposed, consumi … More ng DO in the water. This phenomenon indicate that the hypoxic water has occurred by the increase of DO consumption from the sea floor with organic enrichment of he sediment, but also the increase of water temperature due to the recent global warming is becoming another factor that increase oxygen consumption in the water and results in the progress of hypoxia or anoxic in the bay. The benthic communities in the innermost areas of the bay were declining markedly year to year due to the occurrence of the severer hypoxic or anoxic water. They repeated a cyclic fluctuation in density and biomass, that they decreased rapidly in summer, and recovered from autumn to winter. However, the benthic communities did not recover fully in the cold seasons. The benthic communities consisted of restricted members including small spionid polychaetes and small bivalves that had high adaptability against the environmental fluctuations. Therefore, the total biomass of the benthic communities were very poor (less than 10g /m^2) in spring, when they tended to reach a peak. If the present benthic conditions with increasing organic discharge from the occurrence of large scales of red tide and developing hypoxic water in levels and areas continued in summer, the benthic ecosystem in the inner parts of the bay would be seriously destroyed in near future. Less

Report

(4 results)
  • 2007 Annual Research Report   Final Research Report Summary
  • 2006 Annual Research Report
  • 2005 Annual Research Report
  • Research Products

    (53 results)

All 2008 2007 2006 2005 Other

All Journal Article (18 results) (of which Peer Reviewed: 8 results) Presentation (29 results) Book (4 results) Remarks (2 results)

  • [Journal Article] Impact of high concentrations of manganese on the survival of short neck clam Ruditapes philippinarum juveniles in sandy tidal flat sediment in Ariake Bay,Kyushu,Japan2008

    • Author(s)
      Masanori Tsukuda
    • Journal Title

      Plankton and Benthos Research 3

      Pages: 1-9

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
    • Peer Reviewed
  • [Journal Article] Impact of high concentrations of manganese on the survival of short neck clam Ruditapes philippinarum juveniles in sandy tidal flat sediment in Ariake Bay, Kyushu, Japan.2008

    • Author(s)
      Masanori, Tsukuda
    • Journal Title

      Plankton Benthos Res 3

      Pages: 1-9

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] Impact of high concentrations of manganese on the survival of short neck clam Ruditapes philippinarum juveniles in sandy tidal flat sediment in Ariake Bay,Kyushu,Japan2008

    • Author(s)
      Masanori Tsukuda,
    • Journal Title

      Plankton and Benthos Research 3

      Pages: 1-9

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 有明海奥部における夏季の貧酸素水発生域の拡大とそのメカニズム2007

    • Author(s)
      堤 裕昭
    • Journal Title

      海の研究 15

      Pages: 178-202

    • NAID

      110006274432

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
    • Peer Reviewed
  • [Journal Article] Mechanisms for the expansion of hypoxic water in the inner areas of Ariake Bay during summer2007

    • Author(s)
      Hiroaki, Tsutsumi
    • Journal Title

      Oceanogr. Jpn 16

      Pages: 183-202

    • NAID

      110006274432

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] 有明海奥部における夏季の貧酸素水発生域の拡大とそのメカニズム.2007

    • Author(s)
      堤 裕昭
    • Journal Title

      海の研究 15

      Pages: 178-202

    • NAID

      110006274432

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 陸域からの栄養塩負荷量の増加に起因しない有明海奥部における大規模赤潮の発生メカニズム2006

    • Author(s)
      堤 裕昭
    • Journal Title

      海の研究 15

      Pages: 165-189

    • NAID

      110004656905

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary 2005 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Critical Events in the Ariake Bay Ecosystem :Clam Population Collapse,Red tides,and Hypoxic Bottom water2006

    • Author(s)
      Hiroaki Tsutsumi
    • Journal Title

      Plankton and Benthos Research 1

      Pages: 3-25

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
    • Peer Reviewed
  • [Journal Article] 沿岸浅海底に生息する懸濁物食性二枚貝類の食物資源の利用性2006

    • Author(s)
      山口 一岩、堤 裕昭、佃 政則、柴沼 誠一郎、山田 俊郎、門谷 茂
    • Journal Title

      日本ベントス学会誌 61

      Pages: 59-65

    • NAID

      10018213024

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
    • Peer Reviewed
  • [Journal Article] Utilization of food sources by benthic suspension feeding Bivalves in shallow coastal areas2006

    • Author(s)
      Hitomi, Yamaguchi
    • Journal Title

      Jpn J Benthol 64

      Pages: 59-65

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] 沿岸浅海底に生息する懸濁物食性二枚貝類の食物資源の利用性2006

    • Author(s)
      山口一岩, 堤 裕昭, 佃 政則, 柴沼誠一郎, 山田俊郎, 門谷 茂
    • Journal Title

      日本ベントス学会誌 61

      Pages: 59-65

    • NAID

      10018213024

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Critical Events in the Ariake Bay Ecosystem : Clam Population Collapse, Red tides, and Hypoxic Bottom water.2006

    • Author(s)
      Hiroaki Tsutsumi
    • Journal Title

      Plankton & Benthos Research 1

      Pages: 3-25

    • Related Report
      2005 Annual Research Report
  • [Journal Article] 干潟の底質環境の変化とベントス群集への影響-有明海の砂質干潟を例として2005

    • Author(s)
      堤 裕昭
    • Journal Title

      月刊海洋 37

      Pages: 107-115

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] 有明海の干潟で起きたアサリ漁業の衰退とその原因となる環境変化2005

    • Author(s)
      堤 裕昭
    • Journal Title

      応用生態工学会誌 8

      Pages: 83-102

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary 2005 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Marked decline of clam harvesting fisheries and Environmental changes on the tidal flats facing the Ariake Sea in Kumamoto Prefecture.2005

    • Author(s)
      Hiroaki, Tsutsumi
    • Journal Title

      Ecol. Civil Eng 8

      Pages: 83-102

    • NAID

      10021977520

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] Mechanisms causing frequent large-scale red tides in Inner areas of Ariake Bay2005

    • Author(s)
      Hiroaki, Tsutsumi
    • Journal Title

      Oceanogr. Jpn 15

      Pages: 165-189

    • NAID

      110004656905

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] Critical events in the Ariake Bay ecosystem : clam population collapse, red tides, and hypoxic bottom water2005

    • Author(s)
      Hiroaki, Tsutsumi
    • Journal Title

      Plankton Benthos Res 1

      Pages: 3-25

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] 干潟の底質環境の変化とベントス群集への影響-有明海の砂質干潟を例として-2005

    • Author(s)
      堤 裕昭
    • Journal Title

      月刊海洋 37

      Pages: 107-115

    • Related Report
      2005 Annual Research Report
  • [Presentation] 菊池川河口干潟域におけるアサリ(Ruditapes philippinarum) 個体群の急激な回復と個体群維持機構2007

    • Author(s)
      佃 政則
    • Organizer
      2007年度日本ベントス学会、日本プランクトン学会合同大会
    • Place of Presentation
      横浜市、横浜市立大学
    • Year and Date
      2007-09-23
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] 有明海における夏季の水質環境の変化が赤潮発生に及ぼす影響2007

    • Author(s)
      大倉 さちえ
    • Organizer
      2007年度日本ベントス学会、日本プランクトン学会合同大会
    • Place of Presentation
      横浜市、横浜市立大学
    • Year and Date
      2007-09-23
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] Occurrence of hypoxic water and its influence on the benthic communities in the inner part of Ariake Bay2007

    • Author(s)
      Atsushi, Takamatsu
    • Organizer
      Annual meeting of The Japanese Society of Benthology
    • Place of Presentation
      Yokohama
    • Year and Date
      2007-09-23
    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] Rapid recovery of short-neck clam population and its population persistence on Kikuchi River Tidal Flat2007

    • Author(s)
      Masanori, Tsukuda
    • Organizer
      Annual meeting of The Japanese Society of Benthology
    • Place of Presentation
      Yokohama
    • Year and Date
      2007-09-23
    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] Water conditions that cause red tide in Ariake Bay2007

    • Author(s)
      Sachie, Ohkura
    • Organizer
      Annual meeting of The Japanese Society of Benthology
    • Place of Presentation
      Yokohama
    • Year and Date
      2007-09-23
    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] 有明海奥部で発生する貧酸素水と赤潮の関係2007

    • Author(s)
      堤 裕昭
    • Organizer
      2007年度日本ベントス学会、日本プランクトン学会合同大会
    • Place of Presentation
      横浜市、横浜市立大学
    • Year and Date
      2007-09-22
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] 有明海奥部海域における貧酸素水発生と底生生態系への影響2007

    • Author(s)
      高松 篤志
    • Organizer
      2007年度日本ベントス学会、日本プランクトン学会合同大会
    • Place of Presentation
      横浜市、横浜市立大学
    • Year and Date
      2007-09-22
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] Hypoxic water and red tide in inner part of Ariake Bay2007

    • Author(s)
      Hiroaki, Tsutsumi
    • Organizer
      Annual meeting of The Japanese Society of Benthology
    • Place of Presentation
      Yokohama
    • Year and Date
      2007-09-22
    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] 有明海奥部で発生する貧酸素水と赤潮の関係2007

    • Author(s)
      堤 裕昭
    • Organizer
      2007年度日本ベントス学会・日本プランクトン学会合同大会
    • Place of Presentation
      横浜市、横浜市立大学
    • Year and Date
      2007-09-22
    • Related Report
      2007 Annual Research Report
  • [Presentation] 有明海奥部海域における貧酸素水発生と底生生態系への影響2007

    • Author(s)
      高松 篤志
    • Organizer
      2007年度日本ベントス学会・日本プランクトン学会合同大会
    • Place of Presentation
      横浜市、横浜市立大学
    • Year and Date
      2007-09-22
    • Related Report
      2007 Annual Research Report
  • [Presentation] 菊池川河口干潟域におけるアサリ(Ruditapes philippinarum)個体群の急激な回復と個体群維持機構2007

    • Author(s)
      佃 政則
    • Organizer
      2007年度日本ベントス学会・日本プランクトン学会合同大会
    • Place of Presentation
      横浜市、横浜市立大学
    • Year and Date
      2007-09-22
    • Related Report
      2007 Annual Research Report
  • [Presentation] 有明海における夏季の水質環境の変化が赤潮発生に及ぼす影響.2007

    • Author(s)
      大倉 さちえ
    • Organizer
      2007年度日本ベントス学会・日本プランクトン学会合同大会
    • Place of Presentation
      横浜市、横浜市立大学
    • Year and Date
      2007-09-22
    • Related Report
      2007 Annual Research Report
  • [Presentation] Negative impact of the recent increase of water temperature related to global warming on the ecosystem in an enclosed bay2007

    • Author(s)
      Hiroaki Tsutsumi
    • Organizer
      The 42nd European Marine Biology Symposium
    • Place of Presentation
      Kiel,Germany
    • Year and Date
      2007-08-28
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] Negative impacr of the recent increase of water temperature related to global warming on the eco-system in an enclosed bay2007

    • Author(s)
      Hiroaki, Tsutsumi
    • Organizer
      The 42nd European Marine Biology Symposium
    • Place of Presentation
      Kiel, Germany
    • Year and Date
      2007-08-28
    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] Negative impact of the recent increase of water temperature related to global warming on the ecosystem in an enclosed bay2007

    • Author(s)
      Hiroaki Tsutsumi
    • Organizer
      The 42^<nd> European Marine Biology Symposium
    • Place of Presentation
      Kiel,Germany
    • Year and Date
      2007-08-28
    • Related Report
      2007 Annual Research Report
  • [Presentation] 有明海奥部海域における水質環境および赤潮の発生要因について2006

    • Author(s)
      堤 彩
    • Organizer
      2006年度日本プランクトン学会、日本ベントス学会合同大会
    • Place of Presentation
      広島市、広島県情報プラザ
    • Year and Date
      2006-09-30
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] 有明海生態系の危機:大規模赤潮と貧酸素水の発生2006

    • Author(s)
      堤 裕昭
    • Organizer
      2006年度日本プランクトン学会、日本ベントス学会合同大会
    • Place of Presentation
      広島市、広島県情報プラザ
    • Year and Date
      2006-09-30
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] 荒尾前浜干潟におけるアサリ(Ruditapes phillipinarum)稚貝の定着と底質環境との関係2006

    • Author(s)
      佃 政則
    • Organizer
      2006年度日本プランクトン学会、日本ベントス学会合同大会
    • Place of Presentation
      広島市、広島県情報プラザ
    • Year and Date
      2006-09-29
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] Relationship between settlement density of short-neck clam and sediment conditions on Arao Tidal Flat2006

    • Author(s)
      Masanori, Tsukuda
    • Organizer
      Annual meeting of The Japanese Society of Benthology
    • Place of Presentation
      Hiroshima
    • Year and Date
      2006-09-29
    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] Water environment that causes red tide in the inner-most areas of Ariake Bay.2006

    • Author(s)
      Aya, Tsutsumi
    • Organizer
      Annual meeting of The Japanese Society of Benthology
    • Place of Presentation
      Hiroshima
    • Year and Date
      2006-09-29
    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] Ecosystem crisis in Ariake Bay. Occurrence of large scale of red tide and hypoxic water2006

    • Author(s)
      Hiroaki, Tsutsumi
    • Organizer
      Annual meeting of The Japanese Society of Bentholo
    • Place of Presentation
      Hiroshima
    • Year and Date
      2006-09-29
    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] 有明海砂質干潟におけるアサリ漁獲量激減と環箋の変化2005

    • Author(s)
      堤 裕昭
    • Organizer
      平成17年度日本水産学会大会
    • Place of Presentation
      東京海洋大学(東京都港区)
    • Year and Date
      2005-04-03
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] 菊池川河口干潟におけるアサリ(Ruditapes philippinarum)の2次生産量の推定と個体群動態の現状2005

    • Author(s)
      佃 政則
    • Organizer
      平成17年度日本水産学会大会
    • Place of Presentation
      東京海洋大学(東京都港区)
    • Year and Date
      2005-04-03
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] Drastic decrease of clam harvest on the sandy tidal flats in Ariake Bay2005

    • Author(s)
      Hiroaki, Tsutsumi
    • Organizer
      Annual meeting of The Japanese Society of Fisheries Secience
    • Place of Presentation
      Tokyo
    • Year and Date
      2005-04-03
    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] Secondary production of a short neck-clam and its population dynamics on Kikuchi River Tida Flat.2005

    • Author(s)
      Masanori, Tsukuda
    • Organizer
      Annual meeting of The Japanese Society of Fisheries Secience
    • Place of Presentation
      Tokyo
    • Year and Date
      2005-04-03
    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] 熊本県の干潟域において環境要因が底生生物に及ぼす影響とアサリ(Ruditapesphilippinarum)の生残に関する研究2005

    • Author(s)
      佃 政則
    • Organizer
      第8回マリンバイオテクノロジー学会
    • Place of Presentation
      熊本県立大学(熊本市)
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] 有明海における水質環境および赤潮の発生メカニズムについて2005

    • Author(s)
      堤 彩
    • Organizer
      2005年度日本プランクトン学会、日本ベントス学会合同大会
    • Place of Presentation
      北海道厚岸町
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] Environmental factors that affect the abundance of benthic communities and survival rate of short-neck clam on the tidal flats in Kumamoto Prefecture2005

    • Author(s)
      Masanori, Tsukuda
    • Organizer
      Annual meeting of Japanese Society of Marine Biotechnology
    • Place of Presentation
      Kumamoto
    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] Water environment and the mechanisms of occurrence large scale of red tide in Ariake Bay2005

    • Author(s)
      Aya, Tsutsumi
    • Organizer
      Annual meeting of The Japanese Society of Benthology
    • Place of Presentation
      Akkeshi, Hokkaido
    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Book] 日本海洋学会編、有明海の再生をめざして、1赤潮の大規模化とその要因2005

    • Author(s)
      堤 裕昭
    • Publisher
      恒星社厚生閣
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Book] 日本海洋学会編、有明海の再生をめざして、4-2貝類漁業2005

    • Author(s)
      堤 裕昭
    • Publisher
      恒星社厚生閣
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Book] 有明海の再生をめざして、1 赤潮の大規模化とその要因(日本海洋学会編)2005

    • Author(s)
      堤 裕昭
    • Publisher
      恒星社厚生閣
    • Related Report
      2005 Annual Research Report
  • [Book] 有明海の再生をめざして、4-2 貝類漁業(日本海洋学会編)2005

    • Author(s)
      堤 裕昭
    • Publisher
      恒星社厚生閣
    • Related Report
      2005 Annual Research Report
  • [Remarks] 「研究成果報告書概要(和文)」より

    • URL

      http://www.ariakekai.info/

    • Related Report
      2007 Final Research Report Summary
  • [Remarks]

    • URL

      http://www.ariakekai.info/

    • Related Report
      2007 Annual Research Report

URL: 

Published: 2005-04-01   Modified: 2016-04-21  

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