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2012 Fiscal Year Final Research Report

Ecosystem development and mechanism for sustaining biological diversity at lakes in rocky area of Antarctic

Research Project

  • PDF
Project/Area Number 23651006
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeMulti-year Fund
Research Field Environmental dynamic analysis
Research InstitutionThe University of Tokyo

Principal Investigator

YAMAMURO Masumi  東京大学, 大学院・新領域創成科学研究科, 教授 (80344208)

Co-Investigator(Renkei-kenkyūsha) KUDO Sakae  国立極地研究所, 准教授 (40221931)
Project Period (FY) 2011 – 2012
Keywords極域環境監視
Research Abstract

We examined the controlling factors on the development of microbial mat constituted with micro algae, cyanobacteria and moss, on the bottoms of oligotrophic lakes at rocky area of Soya Coast, Antarctic. Nitrogen stable isotope ratios of the mats suggested that nitrogen was supplied through nitrogen fixation by cyanobacteria to the microbial mat communities.Carbon stable isotope ratio of the mats suggested that photosynthetic activity decreased as the amount of light (PAR: Photosynthetically active radiation, UV: Ultra Violet) increased. The amount of both PAR and UV showed negative correlation with the drainage areas, suggesting that the dissolved materials supplied from drainage basin decreased the amount of light.

  • Research Products

    (10 results)

All 2012 2011

All Presentation (10 results)

  • [Presentation] Production and nutrient cycling in Antarctic lakes deciphered from stable isotope measurements2012

    • Author(s)
      Hori, M., Tanabe, Y., Kudoh, S.,Yamamuro, M.
    • Organizer
      第34回極域生物シンポジウム
    • Place of Presentation
      国立極地研究所
    • Year and Date
      2012-11-27
  • [Presentation] 南極湖沼生態系を支える湖底の栄養塩2012

    • Author(s)
      田邊優貴子・堀誠・内田雅己・大園享司・山室真澄・工藤栄
    • Organizer
      第34回極域生物シンポジウム
    • Place of Presentation
      国立極地研究所
    • Year and Date
      2012-11-27
  • [Presentation] Nutrients in sediments as driving force behind Antarctic lake ecosystems2012

    • Author(s)
      Tanabe, Y., Hori, M., Uchida, M., Osono,T., Yamamuro, M., Kudoh, S.
    • Organizer
      Polar Ecology Conference 2012
    • Place of Presentation
      Czech Republic
    • Year and Date
      2012-10-04
  • [Presentation] 安定同位体比から見る南極湖沼の堆積物発達機構2012

    • Author(s)
      堀誠・田邊優貴子・工藤栄・山室真澄
    • Organizer
      日本陸水学会77回大会
    • Place of Presentation
      名古屋大学
    • Year and Date
      2012-09-15
  • [Presentation] 南極湖沼生態系を支える湖底の栄養塩2012

    • Author(s)
      田邊優貴子・堀誠・内田雅己・大園享司・山室真澄・工藤栄
    • Organizer
      日本陸水学会77回大会
    • Place of Presentation
      名古屋大学
    • Year and Date
      2012-09-15
  • [Presentation] Nutrient flow in Antarctic lakes estimated by means of sedimentanalysis2012

    • Author(s)
      Hori, M., Tanabe, Y., Kudoh, S.,Yamamuro, M.
    • Organizer
      ASLO Aquatic Science Meeting2012
    • Place of Presentation
      Biwako Hall
    • Year and Date
      2012-07-12
  • [Presentation] Nutrients and hydrogen sulfide distribution in Antarctic lake sediments2012

    • Author(s)
      Tanabe, Y., Hori, M., Yamamuro, M.Kudoh,S.
    • Organizer
      ASLO Aquatic Science Meeting 2012
    • Place of Presentation
      Biwako Hall
    • Year and Date
      2012-07-12
  • [Presentation] 昭和基地周辺の湖沼における栄養塩循環の解明2011

    • Author(s)
      堀誠・田邊優貴子・工藤栄・山室真澄
    • Organizer
      第二回極域科学シンポジウム
    • Place of Presentation
      国立極地研究所
    • Year and Date
      2011-11-18
  • [Presentation] 昭和基地周辺の湖沼における栄養塩循環の解明2011

    • Author(s)
      堀誠・田邊優貴子・工藤栄・山室真澄
    • Organizer
      日本陸水学会第76回大会
    • Place of Presentation
      島根大学
    • Year and Date
      2011-09-23
  • [Presentation] 湖底間隙水と湖水の栄養塩から見た南極湖沼の多様性2011

    • Author(s)
      田邊優貴子・内田雅巳・大園亨司・山室真澄・工藤栄
    • Organizer
      日本陸水学会第76回大会
    • Place of Presentation
      島根大学
    • Year and Date
      2011-09-23

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Published: 2014-09-25  

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