Seasonal variation in microbial communities on glaciers in the Asian high mountains.

2008 Fiscal Year Final Research Report

• Project/Area Number: 18681005
• Research Category: Grant-in-Aid for Young Scientists (A)
• Allocation Type: Single-year Grants
• Research Field: Environmental impact assessment/Environmental policy
• Research Institution: Chiba University
• Principal Investigator: NOZOMU Takeuchi Chiba University, 大学院理学研究科, 准教授 (30353452)
• Project Period (FY): 2006 – 2008
• Keywords: 氷河 / 環境変動 / 極限環境 / 生態学 / 微生物

Research Abstract

アジア内陸部天山山脈のウルムチNo.1 氷河の雪氷微生物の調査を行った.その結果,氷河表面には3種のシアノバクテリア,2種の緑藻の繁殖が明らかになった.上流部で採取したサンプル分析の結果,春から夏の融解期に緑藻が繁殖し,さらに融解が激しい年にはシアノバクテリアが繁殖することが明らかになった.この季節変化の要因は主に融解量で,大気降下物として供給される窒素も関与している可能性があることが示唆された.

Research Products

• [Journal Article] Temporal and spatial variations in spectral reflectance and characterisitics of surface dust on Gulkana Glacier, Alaska Range. (2009)
  • Author(s): Takeuchi, N.
  • Journal Title: Journal of Glaciology (accepted.)
  • Peer Reviewed
• [Journal Article] Miaoergou Glaciers in the Kalik Mountains, western China: Report of a reconnaissance for future ice core drilling and biological study. (2008)
  • Author(s): Takeuchi, N., Nakawo, M., Narita, H., and Han, J.
  • Journal Title: Bulletin of Glaciological Research 26 Pages: 33-40
  • Peer Reviewed
• [Journal Article] Characteristics of surface dust on Urumqi Glacier No. 1 in the Tien Shan Mountains, China. (2008)
  • Author(s): Takeuchi, N., and Li, Z.
  • Journal Title: Arctic, Antarctic, and Alpine Research 40(4) Pages: 744-750
  • Peer Reviewed
• [Journal Article] Chemical characteristics of pond wateres within the debris area of Lirung Glacier in Nepal Himalaya. (2007)
  • Author(s): Bhatt, M. P., Masuzawa, T., Yamamoto, M., Takeuchi, N.
  • Journal Title: Journal of Limnology 66(2) Pages: 71-80
  • Peer Reviewed
• [Journal Article] Estimation of net accumulation rate at a Patagonian glacier by ice core analyses using snow algae. (2007)
  • Author(s): Kohshima, S., Takeuchi, N., Uetake, J., Shiraiwa, T., Uemura, R., Yoshida, N., Matoba, S., and Godoie., M. A.
  • Journal Title: Global and Planetary Change 59 Pages: 236-244
  • Peer Reviewed
• [Journal Article] (2006)
  • Author(s): Takeuchi, N., Dial, R., Kohshima, S., Segawa, T., Uetake J.
  • Journal Title: Geophysical Research Letter 33 Pages: L21502, doi:10.1029/2006GL027819.
  • Peer Reviewed
• [Presentation] Reconstruction of Climate and River Discharge in the Last 1000 Years Based on Mountain Ice Core Data in the Central Asia Nozomu Takeuchi (2009)
  • Author(s): Takeuchi, N., et al.
  • Organizer: Reconceptualizing Cultural and Environmental Change in Central Asia: An Historical Perspective on the Future, RIHN
  • Place of Presentation: Kyoto, Japan
  • Year and Date: 2009-01-31
• [Presentation] 中国祁連山およびロシアアルタイ山脈のアイスコアから復元した過去100年の風送ダストの年変動 (2008)
  • Author(s): 竹内望,ほか
  • Organizer: 日本地球惑星科学連合合同大会
  • Place of Presentation: 幕張
  • Year and Date: 20080500
• [Presentation] Changes of biological community from the 1990s to 2008 on the Yala Glacier, Nepali Himalayas (2008)
  • Author(s): Takeuchi, N., et al.
  • Organizer: NIPR Int. Symposium
  • Place of Presentation: Tokyo, Japan.
  • Year and Date: 2008-12-03
• [Presentation] 雪氷研究者と共同で行う博物館における子どもたちのフィールド活動‐伊吹山で赤雪を探そう! (2007)
  • Author(s): 角川咲江,竹内望
  • Organizer: 日本雪氷学会
  • Place of Presentation: 富山
  • Year and Date: 2007-09-28
• [Presentation] 富山県・立山の融雪期の積雪面における不純物の特性と積雪面アルベド (2007)
  • Author(s): 古川隆朗, 西山大陸, 竹内望
  • Organizer: 日本雪氷学会
  • Place of Presentation: 富山
  • Year and Date: 2007-09-28
• [Presentation] 伊吹山頂上付近の雪渓の雪氷藻類 (2007)
  • Author(s): 竹内望,角川咲江
  • Organizer: 日本雪氷学会
  • Place of Presentation: 富山
  • Year and Date: 2007-09-27
• [Presentation] アジアの氷河表面の汚れ物質のストロンチウム同位体比 (2007)
  • Author(s): 永塚尚子,中野孝教,竹内望
  • Organizer: 日本雪氷学会
  • Place of Presentation: 富山
  • Year and Date: 2007-09-27
• [Presentation] 中国・天山山脈ウルムチNo.1 氷河のアイスコア中の不純物の特性 (2007)
  • Author(s): 石田依子, 竹内望
  • Organizer: 日本雪氷学会
  • Place of Presentation: 富山
  • Year and Date: 2007-09-27
• [Presentation] 中国天山ウルムチNO.1 氷河の表面汚れ物質の特性 (2007)
  • Author(s): 竹内望,李忠勤
  • Organizer: 日本雪氷学会
  • Place of Presentation: 富山
  • Year and Date: 2007-09-26
• [Presentation] A distinctive snow algal community on a glacier in the Tienshan Mountains, China. (2007)
  • Author(s): Takeuchi, N., et al.
  • Organizer: IUGG
  • Place of Presentation: Perugia, Italy.
  • Year and Date: 2007-07-12
• [Presentation] Significant Effect of Biogenic Material (cryoconite) on Surface Albedo of Asian Glaciers: -Geographical Comparison of the Amounts of Cryoconite and Surface Albedo of Glaciers. (2007)
  • Author(s): Takeuchi, N., et al.
  • Organizer: IUGG
  • Place of Presentation: Perugia, Italy.
  • Year and Date: 2007-07-09
• [Presentation] 中国祁連山のアイスコアの分析から明らかになった中国乾燥域の近年の環境変動 (2007)
  • Author(s): 竹内望,ほか
  • Organizer: 日本地球惑星科学連合合同大会
  • Place of Presentation: 幕張
  • Year and Date: 2007-05-22
• [Presentation] 中国祁連山七一氷河の特殊な雪氷藻類群集と高いpH (2006)
  • Author(s): 竹内望,ほか
  • Organizer: 日本雪氷学会
  • Place of Presentation: 秋田
  • Year and Date: 20061100
• [Presentation] Spatial distribution and abundance of snow algae on glaciers derived from a satellite image (2006)
  • Author(s): Takeuchi, N., et al.
  • Organizer: 第29回極域気水圏・生物合同シンポジウム
  • Place of Presentation: 東京
  • Year and Date: 2006-11-21
• [Presentation] 氷河を解かす雪氷微生物:生物的雪氷面アルベド低下効果の地域比較 (2006)
  • Author(s): 竹内望,幸島司郎
  • Organizer: 日本地球惑星科学連合合同大会
  • Place of Presentation: 幕張
  • Year and Date: 2006-05-17
• [Presentation] キルギスタン・グリゴレア氷帽から掘削した87mアイスコア
  • Author(s): 竹内望,ほか
  • Organizer: 日本雪氷学会
  • Place of Presentation: 東京
• [Book] ヒマラヤと地球温暖化 消えゆく氷河 (2007)
  • Author(s): 共著
  • Total Pages: 21-36,109-130
  • Publisher: 昭和堂
• [Remarks] 博物館・西堀栄三郎記念探検の殿堂で,雪氷生物についての子供向け講演,実習(滋賀県)2008/4
• [Remarks] ホームページにおける成果の公開
  • URL: http://www-es.s.chiba-u.ac.jp/.takeuchi/