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Long-term dynamics of the community of soil algae in the vicinity of Syowa Station

Research Project

Project/Area Number 17K00520
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Environmental dynamic analysis
Research InstitutionShimane University

Principal Investigator

Ohtani Shuji  島根大学, 学術研究院教育学系, 教授 (50185295)

Co-Investigator(Kenkyū-buntansha) 林 昌平  島根大学, 学術研究院環境システム科学系, 助教 (20725593)
Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2019: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2018: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2017: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywords南極 / 土壌藻類 / 培養株 / 形態分類 / 遺伝子解析 / 長期動態 / 昭和基地 / 種組成 / 経年変化 / 環境解析学 / 環境動態解析 / 土壌藻類群集 / 長期動態解析
Outline of Final Research Achievements

We have preserved strains of cyanobacteria, yellow-green algae and green algae in a 9-year environmental montoring from around the Syowa Station, Antarctica. Many of these strains were difficult to classify based on their morphology and remained identified at the genus level. Since the increase in the classification up to the species will increase the accuracy of the algal community, for the past three years, we have tried to identify the species by morphological taxonomic study and gene phylogenetic analyses for strains at the genus level. Especially for yellow-green algae, since many similar species are difficult to classify, intensive research was conducted. Even when it was difficult to distinguish by morphology, it was clarified that the species could be determined or it was an undescribed species by combining it with the results of gene analysis.

Academic Significance and Societal Importance of the Research Achievements

南極での土壌環境監視を目的とした土壌藻類の9年間にわたる計8定点での長期モニタリングは,我々の知る限りでは申請者らの研究以外に実施されていない。保存した藍藻,黄緑藻,緑藻の培養株について形態分類と遺伝子解析の研究で、種を確定できたり、未記載種を明らかにすることができた。
本研究3年間の分類学的研究の成果を9年間の長期データと照合することで、今まで以上に昭和基地周辺の土壌藻類群集構造の変化を明瞭にとらえることができ、土壌環境による種組成の違い、同じ地点に継続して出現する種、年変動が大きい種、生物指標種が明らかとなった。

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (3 results)

All 2020 2018 2017

All Presentation (3 results)

  • [Presentation] 南極昭和基地周辺土壌から分離された黄緑藻 Botrydiopsis属の分類学的研究2020

    • Author(s)
      大谷修司,林昌平
    • Organizer
      日本藻類学会第44回大会(鹿児島大学)
    • Related Report
      2019 Annual Research Report
  • [Presentation] 南極産黄緑藻 Botrydiopsis callosa Trenkwalder の形態と生活環2018

    • Author(s)
      大谷修司,林昌平
    • Organizer
      日本藻類学会第42回仙台大会
    • Related Report
      2017 Research-status Report
  • [Presentation] 南極昭和基地周辺土壌から分離されたBotrydiopsis callosa Trenkwalderの形態と分布2017

    • Author(s)
      大谷修司,林昌平
    • Organizer
      第8 回極域科学シンポジウム
    • Related Report
      2017 Research-status Report

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Published: 2017-04-28   Modified: 2021-02-19  

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