Relationships between continental Ice sheet retreat events recorded in the Arctic Ocean floor and their global climate changes

• Project/Area Number: 23651021
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Environmental dynamic analysis
• Research Institution: National Institute for Environmental Studies
• Principal Investigator: UCHIDA Masao 独立行政法人国立環境研究所, 環境計測研究センター, 主任研究員 (50344289)
• Project Period (FY): 2011 – 2012
• Project Status: Completed (Fiscal Year 2012)
• Budget Amount: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000); Fiscal Year 2012: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000); Fiscal Year 2011: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
• Keywords: 海洋古細菌 / 代謝 / 放射性炭素 / 溶存有機炭素 / 海洋微生物ループ / 古細菌 / DOC / 炭素循環

Research Abstract

Metabolism of marine archaea is well unknown, such as relative abundance of archaea with heterotrophic and autotrophic metabolisms. To elucidate the role in the carbon cycle, the GDGTs derived from membrane lipids of marine archaea were studied using natural level radiocarbon tracer, which samples was collected from a commercial deep water collection facility in Suruga bay. The carbon fixation rate was estimated by using in-situ incubation experiment and published values. The 48-54% of Crenarchaeota are estimated with autorophic metabolism and their carbon amount accumulation rate was from1.29Gt C/y to 6.29Gt C/y

Research Products

• [Journal Article] Archaeal distribution and abundance in water masses of the Arctic Ocean, Pacific sector (2013)
  • Author(s): Chie Amano-Sato, et al.
  • Journal Title: Aquatic Microbial Ecology Volume: (印刷中)(In press) Issue: 2 Pages: 101-112
  • DOI: 10.3354/ame01624
  • Peer Reviewed
• [Journal Article] Quick Recovery of Carbon Dioxide Exchanges in a Burned Black Spruce Forest in Interior Alaska (2011)
  • Author(s): Iwata H., Uchida M., 他
  • Journal Title: SOLA Volume: 7 Pages: 105-108
  • DOI: 10.2151/sola.2011-027
  • NAID: 130004940938
  • ISSN: 1349-6476
  • Peer Reviewed
• [Journal Article] Millennial-scale paleoceanographic events and implication for the intermediate-water ventilation in the northern slope area of the Bering Sea during the last 71 kyrs (2011)
  • Author(s): Kim S., Khim B.K., Uchida M., Itaki T., Tada R
  • Journal Title: Global and Planetary Change Volume: 79 (1-2) Issue: 1-2 Pages: 89-98
  • DOI: 10.1016/j.gloplacha.2011.08.004
  • Peer Reviewed
• [Journal Article] Sedimentary organic matter and carbonate variations in the Chukchi Borderland in association with ice sheet and ocean-atmosphere dynamics over the last 155 kyr (2011)
  • Author(s): Stephan R., Uchida M
  • Journal Title: Biogeosciences Volume: 8 Issue: 12 Pages: 1-9
  • DOI: 10.5194/bg-8-3545-2011
  • Peer Reviewed
• [Journal Article] isotope composition of dissolved humic and fulvic acids in the Tokachi River system (2011)
  • Author(s): Nagao S., Kodama H., Aramaki T., Fujitake N., Uchida M., Shibata Y
  • Journal Title: Radiation Protection Dosimetry Volume: 146 (1-3) Issue: 7-8 Pages: 322-325
  • DOI: 10.1016/j.nimb.2009.10.108
  • Peer Reviewed
• [Journal Article] Radiocarbon (14C) diurnal variations in fine particles at sites downwind from Tokyo. Japan in summer (2011)
  • Author(s): Fushimi A., Wagai R., Uchida M., Hasegawa S., Takahashi K., Kondo M., Hirabayashi M., Morino Y., Shibata Y., Ohara T., Kobayashi S., Tanabe K
  • Journal Title: Environmental Science and Technology Volume: 45 (16) Issue: 16 Pages: 6784-6792
  • DOI: 10.1021/es201400p
  • Peer Reviewed
• [Presentation] CO2, CH4 fluxes and bacterial diversities at terrestrial ecosystem along the trans-Alaska pipeline in tundra and boreal forest, Alaska (2012)
  • Author(s): Amano S. C., Utsumi M., Uchida M., Kondo M., Adachi M., Yamamoto T
  • Organizer: AGU fall meeting 2012
  • Place of Presentation: SanFrancisco, UAS
• [Presentation] Vertical profile and components of marine planktonic archaea in the Pacific sector of the Arctic Oceean (2011)
  • Author(s): Akiyama S., Amano S. C., Uchida M., Utsumi M
  • Organizer: AGU Fall Meeting 2011
  • Place of Presentation: San Francisco, UAS
• [Presentation] Distribution and structure of pranktonic Archaea in the Arctic Ocean using 2008 – 2010 R/V Mirai cruise samples (2011)
  • Author(s): Amano S. C., Akiyama S., Uchida M., Utsumi M
  • Organizer: AGU Fall Meeting
  • Place of Presentation: San Francisco, UAS
• [Presentation] 北極海海洋炭素循環に関与する海洋古細菌群集の評価 (2011)
  • Author(s): 佐藤千恵, 秋山昇平, 鈴木祐喜, 内田昌男, 内海真生
  • Organizer: Blue earth'11
  • Place of Presentation: 東京
• [Presentation] Source diagnosis of PAHs from Kolkata canal sediments (2011)
  • Author(s): Kumata H., Uchida M., Saha M., Kondo M., Shibata Y., Takada H
  • Organizer: by using compound class specific radiocarbon analysis (CCSRA)
  • Place of Presentation: Tokyo
• [Presentation] Compound Class Specific Radiocarbon Analysis (CCRSA) of PAHs from Highly Contaminated Kolkata Canal Sediments (2011)
  • Author(s): Saha M., Kumata H., Uchida M., Takada H
  • Organizer: Accelerator Mass Spectrometry Conference 2011
  • Place of Presentation: Wellington, New Zealand
• [Presentation] アラスカ北極圏の湿原土壌環境特性の解析II-土壌微生物群集構造について- (2011)
  • Author(s): 秋山昇平, 佐藤千恵, 山本智子, 内海真生, 近藤美由紀, 安立美奈子, 内田昌男
  • Organizer: 第45回日本水環境学会年会
  • Place of Presentation: 札幌
• [Presentation] Recent advances of radiocarbon measurements at NIES TERRA (2011)
  • Author(s): Uchida M., Kondo M., Matsuda A., Minoura Y., Shibata Y
  • Organizer: Accelerator Mass Spectrometry Conference 2011
  • Place of Presentation: Wellington, New Zealand
• [Presentation] The trans-Arctic water 14C sections from Mirai and NABOS cruises: reconstruction of surface-mid-deepwater ventilation ages and their comparison of past 14C inventory data (2011)
  • Author(s): Uchida M., Kumamoto Y., Polyakov I, Utsumi M., Kim Y., Rozman P., Murata M., Shibata Y
  • Organizer: The 4th East Asia AMS Symposium
  • Place of Presentation: Tokyo