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Dissimilatory nitrate reduction in the coastal area

Research Project

Project/Area Number 20710011
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeSingle-year Grants
Research Field Environmental dynamic analysis
Research InstitutionRissho University

Principal Investigator

SENGA Yukiko  Rissho University, 地球環境科学部, 助教 (30434210)

Project Period (FY) 2008 – 2010
Project Status Completed (Fiscal Year 2010)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2010: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2009: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2008: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywords物質循環 / 異化型硝酸還元 / DNRA / 脱窒 / 沿岸域 / 亜酸化窒素(N_2O)
Research Abstract

Kushiro Mire is the largest mire in Japan and in 1980 was the first wetland in Japan registered under the Ramsar Convention. Recent reports indicate an increase in nutrient loading into Kushiro Mire from changes in land use. We measured vertical profiles of dissolved inorganic nitrogen (DIN ; NO_3^-, NO_2^-, NH_4^+), dissolved organic carbon (DOC), and various types of microbial activity in soil samples collected to approximately 1.5m depth at two sites in Kushiro Mire. We found an accumulation of NO_3^- and DOC in the deeper soil. Denitrifying activity was highest in the shallower soils, and decreased drastically with depth, whereas higher levels of fluoresceindiacetate hydrolysis and β-glucosidase, acid phosphatase, and xylosidase enzyme activity were found in the deeper layers. We also detected humic-like substances as components of the DOC. These results suggest that the DOC in the wetland soil cannot be used as a substrate for denitrification, causing denitrification to be suppressed in the deeper soil. In addition, denitrifying activity would be very low in the deeper layers due to low soil temperature. As a result, nitrogen inputs to the Mire have resulted in a large accumulation of NO_3^- in the deeper soil. This will eventually change the mire ecosystem through effects such as increased eutrophication and acidification.

Report

(4 results)
  • 2010 Annual Research Report   Final Research Report ( PDF )
  • 2009 Annual Research Report
  • 2008 Annual Research Report
  • Research Products

    (29 results)

All 2011 2010 2009 2008

All Journal Article (16 results) (of which Peer Reviewed: 7 results) Presentation (13 results)

  • [Journal Article] Vertical profiles of DIN, DOC and microbial activities in the peat soil in Kushiro Mire, northeastern Japan.2011

    • Author(s)
      Senga Y, Hiroki M, Nakamura Y, Watarai Y, Watanabe Y, Nohara S
    • Journal Title

      Limnology 12

      Pages: 17-23

    • Related Report
      2010 Final Research Report
  • [Journal Article] Vertical profiles of DIN, DOC and microbial activities in the peat soilin Kushiro Mire, northeastern Japan2011

    • Author(s)
      Senga Y, Hiroki M, Nakamura Y, Watarai Y, Watanabe Y, Nohara S
    • Journal Title

      Limnology

      Volume: 12 Pages: 17-23

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 砂泥堆積物中溶存硫化物の簡便な現場抽出/吸光光度定量及びその有明海北東部堆積物への適用2010

    • Author(s)
      管原庄吾, 圦本達也, 鮎川和泰, 木元克則, 千賀有希子, 奥村稔, 清家泰
    • Journal Title

      分析化学 59

      Pages: 1155-1161

    • NAID

      10026969219

    • Related Report
      2010 Final Research Report
  • [Journal Article] Seasonal and spatial variation in the denitrifying activity in estuarine and lagoonal sediments.2010

    • Author(s)
      Senga Y, Okumura M, Seike Y
    • Journal Title

      Journal of Oceanography 66

      Pages: 155-160

    • NAID

      10029032366

    • Related Report
      2010 Final Research Report 2009 Annual Research Report
  • [Journal Article] 汚濁池沼への酸素供給が有機物分解および微生物群集へ与える影響2010

    • Author(s)
      千賀有希子, 渡辺泰徳
    • Journal Title

      地球環境研究 12

      Pages: 13-18

    • NAID

      40017261953

    • Related Report
      2010 Final Research Report
  • [Journal Article] 水生植物を介した湿地-大気間のN_2O輸送に関する実験的研究2010

    • Author(s)
      千賀有希子, 廣田充, 野原精一
    • Journal Title

      地球環境研究 12

      Pages: 127-132

    • Related Report
      2010 Final Research Report
  • [Journal Article] 釧路湿原赤沼の溶存腐植物質の分解に対する微生物と紫外線の影響2010

    • Author(s)
      千賀有希子, 照井滋晴, 野原精一, 渡辺泰徳
    • Journal Title

      地球環境研究 12

      Pages: 133-137

    • NAID

      130004629737

    • Related Report
      2010 Final Research Report
  • [Journal Article] 汚濁池沼への酸素供給が有機物分解および微生物群集へ与える影響2010

    • Author(s)
      千賀有希子, 渡辺泰徳
    • Journal Title

      地球環境研究

      Volume: 12 Pages: 13-18

    • NAID

      40017261953

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 水生植物を介した湿地-大気間のN_2O輸送に関する実験的研究2010

    • Author(s)
      千賀有希子, 廣田充, 野原精一
    • Journal Title

      地球環境研究

      Volume: 12 Pages: 127-132

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 釧路湿原赤沼の溶存腐植物質の分解に対する微生物と紫外線の影響2010

    • Author(s)
      千賀有希子, 照井滋晴, 野原精一, 渡辺泰徳
    • Journal Title

      地球環境研究

      Volume: 12 Pages: 133-137

    • NAID

      130004629737

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 砂泥堆積物中溶存硫化物の簡便な現場抽出/吸光光度定量及びその有明海北東部堆積物への適用2010

    • Author(s)
      管原庄吾, 圦本達也, 鮎川和泰, 木元克則, 千賀有希子, 奥村稔, 清家泰
    • Journal Title

      分析化学

      Volume: 59 Pages: 1155-1161

    • NAID

      10026969219

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Nitrogen dynamics and N_2O emission in restored salt marsh, Lake Shinji, Japan.2009

    • Author(s)
      Senga Y, Hirota M, Hirao M, Fujii T, Seike Y, Nohara S, Kunii H
    • Journal Title

      Verhandlungen des Internationalen Verein Limnologie 30

      Pages: 907-910

    • Related Report
      2010 Final Research Report
  • [Journal Article] 汚濁池沼への空気供給が窒素および炭素動態に与える影響2009

    • Author(s)
      千賀有希子, 渡辺泰徳
    • Journal Title

      地球環境研究 11

      Pages: 95-102

    • NAID

      40016772126

    • Related Report
      2010 Final Research Report 2009 Annual Research Report
  • [Journal Article] Nitrogen dynamics and N_2O emission in restored salt marsh, Lake Shinji, Japan2009

    • Author(s)
      Senga Y, Hirota M, Hirao M, Fujii T, Seike Y, Nohara S, Kunii H
    • Journal Title

      Verh.Internat.Verein.Limnol. 30

      Pages: 907-910

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Soil organic carbon pools in alpine to nival zones along an altitudinal gradient (4400-5300 m) on the Tibetan Plateau.2008

    • Author(s)
      Ohtsuka T, Hirota M, Zhang X, Shimono A, Senga Y, Du M, Yonemura S, Kawashima S, Tang Y
    • Journal Title

      Polar Science. 2

      Pages: 277-285

    • NAID

      110007089159

    • Related Report
      2010 Final Research Report
  • [Journal Article] Soil organic carbon pools in alpine to nival zones along an attitudinal gradient (4400-5300m) on the Tibetan Plateau2008

    • Author(s)
      Ohtsuka T, Hmota M, Zhang X, shimono A, Senga Y, DuM, Yonemuraa S, Kawashimas S, Tang Y
    • Journal Title

      Polar Science 2

      Pages: 277-285

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Presentation] 腐植湖沼赤沼における溶存有機物分解に対する光と微生物の影響2011

    • Author(s)
      千賀有希子, 渡辺泰徳, 照井滋晴, 広木幹也, 野原精一
    • Organizer
      日本生態学会第58回大会
    • Place of Presentation
      札幌コンベンションセンター(北海道札幌市)
    • Year and Date
      2011-03-09
    • Related Report
      2010 Annual Research Report
  • [Presentation] 腐植湖沼赤沼における溶存有機物分解に対する光と微生物の影響2011

    • Author(s)
      千賀有希子, 渡辺泰徳, 照井滋晴, 野原精一, 広木幹也
    • Organizer
      第58回日本生態学会大会
    • Place of Presentation
      札幌
    • Related Report
      2010 Final Research Report
  • [Presentation] 釧路湿原の土壌深層部における脱窒過程の特徴2010

    • Author(s)
      千賀有希子, 広木幹也, 中村洋介, 渡来靖, 渡辺泰徳, 照井滋晴, 野原精一
    • Organizer
      日本陸水学会第75回大会
    • Place of Presentation
      弘前大学(青森県弘前市)
    • Year and Date
      2010-09-19
    • Related Report
      2010 Annual Research Report
  • [Presentation] 釧路湿原泥炭土壌の脱窒に溶存有機物質が与える影響2010

    • Author(s)
      千賀有希子, 広木幹也, 中村洋介, 渡来靖, 渡辺泰徳, 照井滋晴, 野原精一
    • Organizer
      日本生態学会第57回大会
    • Place of Presentation
      東京大学(東京都)
    • Year and Date
      2010-03-18
    • Related Report
      2009 Annual Research Report
  • [Presentation] 釧路湿原の土壌深層部における脱窒過程の特徴2010

    • Author(s)
      千賀有希子, 広木幹也, 中村洋介, 渡来靖, 渡辺泰徳, 照井滋晴, 野原精一
    • Organizer
      日本陸水学会第75回大会
    • Place of Presentation
      弘前
    • Related Report
      2010 Final Research Report
  • [Presentation] 釧路湿原泥炭土壌の脱窒に溶存有機物質が与える影響2010

    • Author(s)
      千賀有希子, 広木幹也, 中村洋介, 渡来靖, 渡辺泰徳, 照井滋晴, 野原精一
    • Organizer
      第57回日本生態学会大会
    • Place of Presentation
      東京
    • Related Report
      2010 Final Research Report
  • [Presentation] 中海深層水への酸素供給が有機物分解および窒素動態へ与える影響2009

    • Author(s)
      千賀有希子, 渡辺泰徳, 清家泰
    • Organizer
      日本陸水学会第74回大会
    • Place of Presentation
      大分大学(大分市)
    • Year and Date
      2009-09-15
    • Related Report
      2009 Annual Research Report
  • [Presentation] 沿岸域における脱窒活性の時空間変動特性2009

    • Author(s)
      千賀有希子, 奥村稔, 清家泰
    • Organizer
      日本生態学会第56回大会
    • Place of Presentation
      岩手県盛岡市
    • Year and Date
      2009-03-19
    • Related Report
      2008 Annual Research Report
  • [Presentation] 中海深層水への酸素供給が有機物分解および窒素動態へ与える影響2009

    • Author(s)
      千賀有希子, 渡辺泰徳, 清家泰
    • Organizer
      日本陸水学会第74回大会
    • Place of Presentation
      大分
    • Related Report
      2010 Final Research Report
  • [Presentation] 沿岸域における脱窒活性の時空間変動特性2009

    • Author(s)
      千賀有希子, 奥村稔, 清家泰
    • Organizer
      第56回日本生態学会大会
    • Place of Presentation
      盛岡
    • Related Report
      2010 Final Research Report
  • [Presentation] Vertical Profiles of DIN, DOC and microbial activities in the peat soil in Kushiro Mire, northeastern Japan.2009

    • Author(s)
      Senga Y, Hiroki M, Nakamura Y, Watarai Y, Watanabe, Y, Nohara S
    • Organizer
      The 14th International Symposium on River and Lake Environments
    • Place of Presentation
      Ueda, Japan
    • Related Report
      2010 Final Research Report
  • [Presentation] 酸素の過剰供給が汚濁水の微生物相と有機物分解および窒素代謝こ与える影響2008

    • Author(s)
      千賀有希子, 渡辺泰徳
    • Organizer
      日本陸水学会第73回大会
    • Place of Presentation
      北海道札幌
    • Year and Date
      2008-10-13
    • Related Report
      2008 Annual Research Report
  • [Presentation] 酸素の過剰供給が汚濁水の微生物相と有機物分解および窒素代謝に与える影響2008

    • Author(s)
      千賀有希子, 渡辺泰徳
    • Organizer
      日本陸水学会第73回大会
    • Place of Presentation
      札幌
    • Related Report
      2010 Final Research Report

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Published: 2008-04-01   Modified: 2016-04-21  

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