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Uetake Jun

Field Science Center for Northern Biosphere　Forest Research Station　Tomakomai Experimental ForestAssociate Professor
Arctic Research CenterAssociate Professor

Researcher basic information

■ Degree
  • 博士（理学）, 東京工業大学　生命理工学研究科, Mar. 2007
■ URL
researchmap URLホームページURL■ Various IDs
J-Global ID■ Research Keywords and Fields
Research Keyword
  • Environmental DNA
  • Glacier ecosystem
  • bioaerosol
  • 好冷性微生物
Research Field
  • Environmental Science/Agriculture Science, Environmental dynamic analysis
■ Educational Organization

Career

■ Career
Career
  • Feb. 2021 - Present
    Hokkaido University, Field Science Center for Northern Biosphere Forest Research Station, Associate Professor
  • Apr. 2017 - Dec. 2020
    Colorado State University, Department of Atmospheric Science, Researcher
  • Apr. 2016 - Mar. 2017
    National Institute of Polar Research, Arctic Environment Research Center, 特任研究員
  • Apr. 2007 - Mar. 2016
    Research Organization of Information and Systems, 融合プロジェクト特任研究員

Research activity information

■ Papers
■ Other Activities and Achievements
  • アラスカ州グルカナ氷河に生息する雪氷微生物群集の空間分布の季節変化
    小野誠仁; 植竹淳; 對馬あかね; 小林綺乃; 瀬戸大貴; 薄羽珠ノ介; 小西ふき; 竹内望, 雪氷研究大会講演要旨集(Web), 2023, 2023
  • Studies on Atmosphere, Snow/Ice, and Glacial Microbes on Greenland Ice Sheet by SIGMA and relevant projects: ─A linkage to the ArCS II Project─
    AOKI Teruo; MATOBA Sumito; NIWANO Masashi; KUCHIKI Katsuyuki; TANIKAWA Tomonori; TAKEUCHI Nozomu; YAMAGUCHI Satoru; MOTOYAMA Hideaki; FUJITA Koji; YAMASAKI Tetsuhide; IIZUKA Yoshinori; HORI Masahiro; SHIMADA Rigen; UETAKE Jun; NAGATSUKA Naoko; ONUMA Yukihiko; HASHIMOTO Akihiro; ISHIMOTO Hiroshi; TANAKA Taichu Yasumich; OSHIMA Naga; KAJINO Mizuo; ADACHI Kouji; KUROSAKI Yutaka; SUGIYAMA Shin; TSUTAKI Shun; GOTO-AZUMA Kumiko; HACHIKUBO Akihiro; KAWAKAMI Kaoru; KINASE Takeshi, Journal of the Japanese Society of Snow and Ice, 83, 2, 169, 191, Mar. 2021
    Currently occurring rapid warming in the Arctic could affect global environmental changes through sea level rise and remote atmospheric effect. The surface melting of the Greenland Ice Sheet (GrIS) involves various uncertainties, which are issues to be elucidated for accurate climate projections. To clarify how the atmosphere, snow/ice, and glacial microbes in the GrIS affect the ice sheet change under global warming, the SIGMA and SIGMA-II projects were conducted from FY2011 to FY2019. In parallel, big Arctic research projects such as GRENE and ArCS were also done, which accelerated the Japanese Greenland researches. This paper describes the research results of the SIGMA and SIGMA-II projects as well as the related research projects in the categories of (1) in-situ observations of the atmosphere, snow/ice, and glacial microbes, (2) ice core drilling, (3) satellite observation, and (4) numerical modeling. Furthermore, we discuss current issues in these studies, a linkage to the Cryosphere subject of recently launched ArCS II Project, and the importance of capacity building., The Japanese Society of Snow and Ice, Japanese
  • Greenland records of aerosol source and atmospheric lifetime changes from the Eemian to the Holocene
    S. Schüpbach; H. Fischer; M. Bigler; T. Erhardt; G. Gfeller; D. Leuenberger; O. Mini; R. Mulvaney; N. J. Abram; N. J. Abram; L. Fleet; M. M. Frey; E. Thomas; A. Svensson; D. Dahl-Jensen; E. Kettner; H. Kjaer; I. Seierstad; J. P. Steffensen; S. O. Rasmussen; P. Vallelonga; M. Winstrup; A. Wegner; B. Twarloh; K. Wolff; K. Schmidt; K. Goto-Azuma; T. Kuramoto; T. Kuramoto; M. Hirabayashi; J. Uetake; J. Uetake; J. Zheng; J. Bourgeois; D. Fisher; D. Zhiheng; C. Xiao; M. Legrand; A. Spolaor; J. Gabrieli; C. Barbante; J. H. Kang; S. D. Hur; S. B. Hong; H. J. Hwang; S. Hong; M. Hansson; Y. Iizuka; I. Oyabu; R. Muscheler; F. Adolphi; F. Adolphi; O. Maselli; J. McConnell; E. W. Wolff, Nature Communications, 9, 1, 01 Dec. 2018
    Springer Science and Business Media LLC, English
  • Characteristics of droplet size distributions in low-level stratiform clouds observed from Tokyo skytree
    Ryohei Misumi; Yasushi Uji; Yutaka Tobo; Kazuhiko Miura; Jun Uetake; Yoko Iwamoto; Takeshi Maesaka; Koyuru Iwanami, Journal of the Meteorological Society of Japan, 96, 4, 405, 413, 2018
    English
  • Biological studies on the Greenland ice sheet
    永塚 尚子; 竹内 望; 植竹 淳, 月刊地球, 37, 3, 72, 82, Mar. 2015
    海洋出版, Japanese
  • 2011年及び2012年に北西グリーンランド氷床上で観測された光吸収性積雪不純物濃度
    AOKI Teruo; MATOBA Sumito; YAMAGUCHI Satoru; TANIKAWA Tomonori; NIWANO Masashi; KUCHIKI Katsuyuki; ADACHI Kouji; UETAKE Jun; MOTOYAMA Hideaki; HORI Masahiro, Bulletin of Glaciological Research, 32, 21, 31, Aug. 2014
    日本雪氷学会, English
  • Chemical composition of surface snow and ice, and precipitation on Qiyi Glacier, Qilian Mountains, western China
    三宅 隆之; 植竹 淳; 的場 澄人, 雪氷, 76, 1, 3, 17, Jan. 2014
    日本雪氷学会, Japanese
  • O34-06 グリーンランド、カナック氷河上のクリオコナイト粒の形成プロセスと分布(口頭発表)
    植竹 淳; 瀬川 高弘; 永塚 尚子; 田中 聡太; 竹内 望; 本山 秀明; 青木 輝夫, 日本微生物生態学会講演要旨集, 2014, 125, 125, 2014
    日本微生物生態学会, Japanese
  • Eemian interglacial reconstructed from a Greenland folded ice core
    D. Dahl-Jensen; M. R. Albert; A. Aldahan; N. Azuma; D. Balslev-Clausen; M. Baumgartner; A. M. Berggren; M. Bigler; T. Binder; T. Blunier; J. C. Bourgeois; E. J. Brook; S. L. Buchardt; C. Buizert; E. Capron; J. Chappellaz; J. Chung; H. B. Clausen; I. Cvijanovic; S. M. Davies; P. Ditlevsen; O. Eicher; H. Fischer; D. A. Fisher; L. G. Fleet; G. Gfeller; V. Gkinis; S. Gogineni; K. Goto-Azuma; A. Grinsted; H. Gudlaugsdottir; M. Guillevic; S. B. Hansen; M. Hansson; M. Hirabayashi; S. Hong; S. D. Hur; P. Huybrechts; C. S. Hvidberg; Y. Iizuka; T. Jenk; S. J. Johnsen; T. R. Jones; J. Jouzel; N. B. Karlsson; K. Kawamura; K. Keegan; E. Kettner; S. Kipfstuhl; H. A. Kjær; M. Koutnik; T. Kuramoto; P. Köhler; T. Laepple; A. Landais; P. L. Langen; L. B. Larsen; D. Leuenberger; M. Leuenberger; C. Leuschen; J. Li; V. Lipenkov; P. Martinerie; O. J. Maselli; V. Masson-Delmotte; J. R. McConnell; H. Miller; O. Mini; A. Miyamoto; M. Montagnat-Rentier; R. Mulvaney; R. Muscheler; A. J. Orsi; J. Paden; C. Panton; F. Pattyn; J. R. Petit; K. Pol; T. Popp; G. Possnert; F. Prié; M. Prokopiou; A. Quiquet; S. O. Rasmussen; D. Raynaud; J. Ren; C. Reutenauer; C. Ritz; T. Röckmann; J. L. Rosen; M. Rubino; O. Rybak; D. Samyn; C. J. Sapart; A. Schilt; A. M.Z. Schmidt; J. Schwander; S. Schüpbach; I. Seierstad; J. P. Severinghaus; S. Sheldon; S. B. Simonsen; J. Sjolte; A. M. Solgaard; T. Sowers; P. Sperlich; H. C. Steen-Larsen; K. Steffen; J. P. Steffensen; D. Steinhage; T. F. Stocker; C. Stowasser; A. S. Sturevik; W. T. Sturges; A. Sveinbjörnsdottir; A. Svensson; J. L. Tison; J. Uetake; P. Vallelonga; R. S.W. Van De Wal; G. Van Der Wel; B. H. Vaughn; B. Vinther; E. Waddington; A. Wegner; I. Weikusat; J. W.C. White; F. Wilhelms; M. Winstrup; E. Witrant; E. W. Wolff; C. Xiao; J. Zheng, Nature, 493, 7433, 489, 494, 24 Jan. 2013
    English
  • Improved direct-count method by fluorescence microscope for low-biomass ice core (in Japanese)
    Jun Uetake; Kumiko Goto-Azuma; Hideaki Motoyama, Antarctic record, 56, 1, 57, 67, 30 Mar. 2012
    Ice cores recovered from ice sheets contain microorganisms that were transported to the surface of the ice sheet along with airborne dust. The abundance of microorganisms in ice cores, as measured by direct cell count under a fluorescence microscope, is generally lower than that in other aquatic environments. It is possible that the abundance of microorganisms in ice cores is underestimated due to the degradation of fluorescent dye or because non-specific fluorescence from mineral particles inhibits the fluorescence signal from microorganisms. To investigate this possibility, we tested 4 ty..., National Institute of Polar Research, Japanese
  • 「北極域における積雪汚染及び雪氷微生物が急激な温暖化に及ぼす影響評価に関する研究」(SIGMAプロジェクト)の紹介
    青木輝夫; 朽木勝幸; 庭野匡思; 田中泰宙; 保坂征宏; 橋本明弘; 本山秀明; 兒玉裕二; 植竹淳; 竹内望; 的場澄人; 杉山慎; 山口悟; 本吉弘岐; 岩田幸良; 杉浦幸之助; 八久保晶弘; 堀雅裕; 谷川朋範; 本谷研; 山崎哲秀, 日本気象学会大会講演予稿集, 102, 2012
  • Depth distribution of microorganisms in the surface pit from accumulation area in McCall Glacier, Alaska
    Jun Uetake; Jun Uetake; Hideaki Motoyama; Fujii Yoshiyuki; Kazuhide Satow; Matt Nolan; Shuhei Takahashi, Summaries of JSSI and JSSE Joint Conference on Snow and Ice Research, 2011, 0, 199, 199, 2011
    The Japanese Society of Snow and Ice / Japan Society for Snow Engineering, English
  • グリーンランドNEEMにおける観測報告
    東久美子; 青木周司; 東信彦; 飯塚芳徳; 植竹淳; 川村賢二; 神田啓史; 倉元隆之; 小端拓郎; 笹公和; 佐藤基之; 瀬川高弘; 高村近子; 中澤高清; 平林幹啓; 藤井理行; 藤田秀二; 堀彰; 堀内一穂; 三宅隆之; 三宅隆之; 宮本淳; 本山秀明, 極域科学・宙空圏・気水圏・生物・地学シンポジウム講演予稿集(CD-ROM), 2011, 2011
  • Measurement of crystal size in Belukha ice core, Siberian Altai
    Sachiko Okamoto; Koji Fujita; Hideki Narita; Jun Uetake; Fumio Nakazawa; Nozomu Takeuchi; Takayuki Miyake; V. B. Aizen; S. A. Nikitin; Masayoshi Nakawo, Summaries of JSSI and JSSE Joint Conference on Snow and Ice Research, 2011, 0, 207, 207, 2011
    The Japanese Society of Snow and Ice / Japan Society for Snow Engineering, English
  • The use of DNA analysis in sectional identification of a Pinus pollen grain found in Belukha Glacier, Altain Mountains, Russia
    Nakazawa Fumio; Uetake Jun; Suyama Yoshihisa; Kaneko Ryou; Takeuchi Nozomu; Fujita Koji; Motoyama Hideaki; Kanda Hiroshi, Summaries of JSSI and JSSE Joint Conference on Snow and Ice Research, 2011, 0, 55, 55, 2011
    The Japanese Society of Snow and Ice / Japan Society for Snow Engineering, Japanese
  • Communities of algae and cyanobacteria on glaciers in west Greenland
    Uetake Jun; Naganuma Takeshi; Hebsgaard Martin Bay; Kanda Hiroshi; Kohshima Shiro, Polar science, 4, 1, 71, 80, May 2010
    Communities of algae and cyanobacteria on two glaciers in west Greenland (the Qaanaaq and Russel glaciers) were analyzed and compared with the aim of explaining why the Qaanaaq Glacier (in northwestern Greenland) has a dark-colored surface in satellite images whereas the Russel Glacier (in western central Greenland) has a light-colored surface. We found that algal andcyanobacterial communities differed between the glaciers and that the amount of biomass was higher on the colder glacier (Qaanaaq Glacier). The community on the Qaanaaq Glacier was composed mainly of green algae, whereas that on the Russel Glacier was dominated by cyanobacteria. Despite the shorter melting period (due to colder air temperature) for the QaanaaqGlacier, the biovolume of algae and cyanobacteria was 2.35 times higher than that on the Russel Glacier at a similar altitude, suggesting greater primary production on the Qaanaaq Glacier. We discuss the possible effects of temperature, nutrient concentrations, and cryoconite holes (melt-holes in the glacier) on the community structure and productivity of algae and cyanobacteria on each glacier, and consider the influence of the identified differences in algal and cyanobacterial communities on the amount of surface melt., National Institute of Polar Research, English
  • グリーンランド深層氷床コア掘削計画(NEEM計画)における微生物解析の検討
    植竹淳; 植竹淳; 東久美子; 倉元隆之; 本山秀明; 神田啓史, 雪氷研究大会講演要旨集, 2010, 2010
  • グリーンランド・NEEMにおける積雪中の化学成分の季節変化
    倉元隆之; 植竹淳; 植竹淳; 東久美子; 平林幹啓; 三宅隆之; 本山秀明, 雪氷研究大会講演要旨集, 2010, 2010
  • グリーンランド深層氷床コア掘削計画(NEEM計画)の展望
    東久美子; 青木周司; 東信彦; 飯塚芳徳; 植竹淳; 川村賢二; 神田啓史; 倉元隆之; 小端拓郎; 笹公和; 佐藤基之; 瀬川高弘; 高村近子; 中澤高清; 平林幹啓; 藤井理行; 藤田秀二; 堀彰; 堀内一穂; 三宅隆之; 宮本淳; 本山秀明, 極域科学・宙空圏・気水圏・生物・地学シンポジウム講演予稿集(CD-ROM), 2010, 2010
  • Distribution of surface albedo in the Western bare ice area of the Greenland Ice Sheet derived from MODIS images
    Hiroki Ito; Nozomu Takeuchi; Shiro Kohshima; Jun Uetake, Summaries of JSSI and JSSE Joint Conference on Snow and Ice Research, 2010, 0, 95, 95, 2010
    The Japanese Society of Snow and Ice / Japan Society for Snow Engineering, English
  • Reconstructed summer temperature in Belukha ice core and neighbor glacier changes
    Sachiko Okamoto; Koji Fujita; Hideki Narita; Jun Uetake; Takayuki Miyake; Fumio Nakazawa; Nozomu Takeuchi; Vladimir B. Aizen; Stanislav A. Nikitin; Masayoshi Nakowo, Summaries of JSSI and JSSE Joint Conference on Snow and Ice Research, 2010, 0, 94, 94, 2010
    The Japanese Society of Snow and Ice / Japan Society for Snow Engineering, English
  • P-68 Diversity of eukaryotes in cryoconite on Greenland Ice sheet(Poster Session)
    UETAKE JUN; KANEKO RYO; MOTOYAMA HIDEAKI, 日本微生物生態学会講演要旨集, 26, 128, 128, 2010
    日本微生物生態学会, Japanese
  • DNA analysis of a single Pinus pollen grain in a glacier (Part 2)
    Nakazawa Fumio; Uetake Jun; Suyama Yoshihisa; Kaneko Ryou; Takeuchi Nozomu; Fujita Koji; Motoyama Hideaki; Kanda Hiroshi, Summaries of JSSI and JSSE Joint Conference on Snow and Ice Research, 2010, 0, 93, 93, 2010
    The Japanese Society of Snow and Ice / Japan Society for Snow Engineering, Japanese
  • North Greenland Eemian Ice Driling
    Kumiko Goto-Azuma; Jun Uetake; Kenji Kawamura; Hiroshi Kanda; Takayuki Kuramoto; Takuro Kobashi; Takahiro Segawa; Chiikako Takamura; Motohiro Hirabayashi; Yoshiyuki Fujii; Shuji Fujita; Takayuki Miyake; Hideaki Motoyama; Shuji Aoki; Takakiyo Nakazawa; Nobuhiko Azuma; Motoyuki Sato; Yoshinori Iizuka; Atsushi Miyamoto; Kimikazu Sasa; Akira Hori; Kazuho Horiuchi, Summaries of JSSI and JSSE Joint Conference on Snow and Ice Research, 2010, 4, 01 Jan. 2010
    English
  • Spore-forming halophilic bacteria isolated from Arctic terrains: Implications for long-range transportation of microorganisms
    Yukimura Kise; Nakai Ryosuke; Kohshima Shiro; Uetake Jun; Kanda Hiroshi; Naganuma Takeshi, Polar science, 3, 3, 163, 169, Nov. 2009
    Organisms living in the Arctic terrains such as Greenland have to deal with low temperature conditions. The mechanisms by which bacteria resist to low temperature are largely unknown; however, a well-known survival strategy of the microorganisms inhabiting the Arctic is spore forming. Moreover, halophilic bacteria are often resistant to various stresses. We have attempted isolation of spore-forming halophilic bacteria from Arctic terrains. We isolated 10 strains of spore-forming halophilic bacteria from the samples collected from a glacial moraine in Qaanaaq, Greenland in July 2007. Identification based on 16S rRNA gene sequence similarities showed that the isolates were closely related to the Oceanobacillus, Ornithinibacillus, Virgibacillus, Gracilibacillus, and Bacillus genera. In addition, the 16S rRNA sequences of some isolates were extremely similar to those of strains from the desert sand in China (100% identity, near full length), the source of the so-called "yellow dust." Previous research indicated that yellow dust had been transported to Greenland by the wind. Our research implies the long-range transportation of these microorganisms to locations such as the Arctic., National Institute of Polar Research, English
  • P-54 アラスカ、グルカナ氷河における好冷性酵母群集について(ポスター発表)
    植竹 淳; 永塚 尚子; 吉村 義隆, 日本微生物生態学会講演要旨集, 25, 76, 76, 2009
    日本微生物生態学会, Japanese
  • 日本地球惑星科学連合2008年大会参加報告
    中澤 文男; 三宅 隆之; 紺屋 恵子; 田中 基樹; 五十嵐 誠; 植竹 淳, 雪氷 : 日本雪氷協會雜誌, 70, 5, 507, 509, 15 Sep. 2008
    日本雪氷学会, Japanese
  • 04-062 Snow algal communities on the glaciers in West Greenland(Extremophiles)
    Uetake Jun; Naganuma Takeshi; Kanda Hiroshi; Kohshima Shiro, 日本微生物生態学会講演要旨集, 24, 89, 89, 2008
    日本微生物生態学会, Japanese
  • Stratigraphical studies in accumulation area of McCall glacier, Alaska, 2004
    SATOW Kazuhide; Uetake Jun; Takahashi Shuhei; Sato Kengo; Yamazaki Tetsuhide; Takahashi Akiyoshi; Nolan Matt; Igarashi Makoto; Fujii Yoshiyuki, Preprints of the Annual Conference, Japanese Society of Snow and Ice, 2006, 0, 105, 105, 2006
    THE JAPANESE SOCIETY OF SNOW AND ICE, Japanese
  • Meteorological observation at July 1st Glacier in northwest China from 2002 to 2005
    SAKAI Akiko; MATSUDA Yoshihiro; FUJITA Koji; MATOBA Sumito; UETAKE Jun; SATOW Kazuhide; DUAN Keqin; PU Jianchen; NAKAWO Masayoshi; YAO Tandong, Bull. Glaciological Res., 23, 23, 32, 01 Jan. 2006
    English
  • Preliminary observations of sub-surface and shallow ice core at July 1st Glacier, China in 2002-2004
    UETAKE Jun; SAKAI Akiko; MATSUDA Yoshihiro; FUJITA Koji; NARITA Hideki; MATOBA Sumito; DUAN Keqin; NAKAWO Masayoshi; YAO Tandong, Bulletin of glaciological research, 23, 85, 93, 01 Jan. 2006
    English
  • Biological ice-core analysis of Sofiyskiy glacier in the Russian Altai
    UETAKE J., Ann. Glaciol., 43, 70, 78, 2006
  • Concentrations, deposition rates and source variations of n-alkanes in Sofiyskiy Glacier, Russian Altai Mountains
    MIYAKE Takayuki; NAKAZAWA Fumio; KOHNO Mika; UETAKE Jun; SUZUKI Keisuke; KAMEDA Takao; FUJII Yoshiyuki; NAKAWO Masayoshi; OHTA Keiichi, Bulletin of glaciological research, 22, 81, 87, 01 Mar. 2005
    English
  • Size distribution and deposition rate of dust in an ice core at Belukha Glacier, Russian Altai Mountains
    Miyake Takayuki; Fujii Yoshiyuki; Nakazawa Fumio; Uetake Jun; Takeuchi Nozomu; Fujita Koji; Nakawo Masayoshi, Preprints of the Annual Conference, Japanese Society of Snow and Ice, 2005, 0, 147, 147, 2005
    THE JAPANESE SOCIETY OF SNOW AND ICE
  • Glacio-biological ice cores analyses from Belukha Glacier
    Uetake Jun; Kohshima Shiro; Nalazawa Fumio; Takeuchi Nozomu; Miyake Takayuki; Fujita Koji; Nakawo Masayoshi, Preprints of the Annual Conference, Japanese Society of Snow and Ice, 2005, 0, 148, 148, 2005
    THE JAPANESE SOCIETY OF SNOW AND ICE
  • Distribution of red snow on the Harding Icefield in Alaska, derived from a satellite image
    Takeuchi Nozomu; DIal Roman; Kohshima Shiro; Segawa Takahiro; Uetake Jun, Preprints of the Annual Conference, Japanese Society of Snow and Ice, 2005, 0, 37, 37, 2005
    THE JAPANESE SOCIETY OF SNOW AND ICE
  • A report on ice core drilling on the western plateau of Mt. Belukha in the Russian Altai Mountains in 2003
    Takeuchi Nozomu; Takahashi Akiyoshi; Uetake Jun; Yamazaki Tetsuya; Aizen Vladimir B.; Joswiak Daniel; Surazakov Arzhan; Nikitin Stanislav, Polar meteorology and glaciology, 18, 121, 133, Nov. 2004
    A 171m deep ice core from the surface to the bottom has been successfully drilled on the West Belukha snow-firn Plateau in the Russian Altai Mountains in the summer of 2003. The drill system used in this project was an electro-mechanical drill with a barrel 135cm long and 9.5cm in inner diameter manufactured by Geo Tecs Co., Japan. The maximum core length for a drilling run is 55cm. It took 87.5 hours in actual working time of 7 working days to drill the core down to the bottom of the glacier. The total number of drilling runs was 325. The mean length of the drilled core was 48.6cm. Most of the cores were not brittle and had a good cylindrical shape. High air temperature above the melting point in the drilling shelter caused some trouble in drilling. One of the major troubles was slip of cutters due to adhesion of cutting tips to the cutters and shoes., National Institute of Polar Research, English
  • ロシア・アルタイ山脈ベルーハ氷河でのアイスコア掘削
    植竹 淳, 雪氷, 66, 1, 89, 93, 15 Jan. 2004
    日本雪氷学会, Japanese
  • Glacio-biological research on Qiyi Glacier, Qi-lian Mountains, China
    Uetake Jun; Khoshima Shiro; Takeuchi Nozomu; sakai akiko; Matsuda Yoshihiro, Preprints of the Annual Conference, Japanese Society of Snow and Ice, 2004, 0, 103, 103, 2004
    THE JAPANESE SOCIETY OF SNOW AND ICE
  • Application of pollen analysis to dating of ice cores from lower-latitude glaciers
    Nakazawa Fumio; Fujita Koji; Uetake Jun; Kohno Mika; Fujiki Toshiyuki; Serguei M. Arkhipov; Kameda Takao; Suzuki Keisuke; Fujii Yoshiyuki, Journal of Geophysical Research, 109, 4, F04001, 2004
    English
  • Stratigraphy and ice grains of a 25.3m ice core from Sofiyskiy Glacier, Russian Altai Mountains, in 2001
    KAMEDA Takao; FUJII Yoshiyuki; SUZUKI Keisuke; KOHNO Mika; NAKAZAWA Fumio; UETAKE Jun; SAVATYUGIN Lev M.; ARKHIPOV Serguei M.; PONOMAREV Ivan A.; MIKHAILOV Nikolay N., Bulletin of glaciological research, 21, 65, 69, 01 Jan. 2004
    日本雪氷学会, English
  • Meteorological observations on Sofiyskiy Glacier, Russian Altai Mountains
    Suzuki Keisuke; Kameda Takao; Kohno Mika; Nakazawa Fumio; Uetake Jun; Fujii Yoshiyuki, Polar meteorology and glaciology, 16, 140, 148, Nov. 2002
    Meteorological observations were carried out on Sofiyskiy Glacier from July 7 to 17, 2001. Air temperature, relative humidity, wind direction, wind speed, atmospheric pressure and global radiation were measured with automatic instruments every ten minutes. Snow surface height was measured using a stake installed in the surface snow several times a day. The net gain of snow surface during the observation period was 268 mm. In the first half of the observation period, air temperature exceeded 3°C during the daytime, but air temperature never became positive during the latter half of the observation period. The heat balance was examined from the meteorological data. The values of estimated snowmelt and observed snowmelt correspond almost exactly., National Institute of Polar Research, English
  • Outline of Japan-Russia joint Glaciological Research on Sofiyskiy Glacier, Russian Altai Mountains in 2000 and 2001
    FUJII Yoshiyuki; KAMEDA Takao; NISHIO Fumihiko; SUZUKI Keisuke; KOHNO Mika; NAKAZAWA Fumio; UETAKE Jun; SAVATYUGIN Lev M.; ARKHIPOV Serguei M.; PONOMAREV lvan A.; MIKHAILOV Nikolay N., Bulletin of glaciological research, 19, 53, 58, 01 Feb. 2002
    日本雪氷学会, English
  • High net accumulation rates at Campo de Hielo Patagonico Sur, South America, revealed by analysis of a 45.97 m long ice core
    T Shiraiwa; S Kohshima; R Uemura; N Yoshida; S Matoba; J Uetake; MA Godoi, ANNALS OF GLACIOLOGY, VOL 35, 35, 84, 90, 2002
    English
■ Syllabus
  • 大学院共通授業科目（一般科目）：自然科学・応用科学, 2024年, 修士課程, 大学院共通科目
  • 北方生態系の生物多様性基礎論, 2024年, 修士課程, 環境科学院
  • 森林圏科学特論Ⅱ, 2024年, 修士課程, 環境科学院
  • ﾌｨーﾙﾄﾞ科学基礎論, 2024年, 修士課程, 環境科学院
  • 一般教育演習(ﾌﾚｯｼｭﾏﾝｾﾐﾅｰ), 2024年, 学士課程, 全学教育
  • 一般教育演習(ﾌﾚｯｼｭﾏﾝｾﾐﾅｰ), 2024年, 学士課程, 全学教育
  • 森林空間機能学, 2024年, 学士課程, 農学部
  • 国際交流Ⅱ, 2024年, 学士課程, 国際本部
  • 英語演習, 2024年, 学士課程, 全学教育
  • 森林空間機能学演習, 2024年, 学士課程, 農学部
■ Research Themes
  • International joint research on Arctic natural aerosols under warm conditions in Southern Greenland
    Grants-in-Aid for Scientific Research
    08 Sep. 2023 - 31 Mar. 2026
    當房 豊; 吉田 淳; 植竹 淳; 大畑 祥; 足立 光司
    Japan Society for the Promotion of Science, Fund for the Promotion of Joint International Research (International Collaborative Research), National Institute of Polar Research, 23KK0067
  • 氷河・積雪生態系における雪氷藻類へのツボカビ感染症の動態解明
    科学研究費助成事業
    01 Apr. 2022 - 31 Mar. 2026
    鏡味 麻衣子; 三木 健; 竹内 望; 植竹 淳; 村上 正志; 瀬川 高弘
    極地や高山に分布する氷河・積雪生態系には，低温でも繁殖可能な特殊な藻類である雪氷藻類が生息している。雪氷藻類が増えると雪氷面が暗色化し雪氷の融解を加速する効果があるため，その動態は世界的な注目を集めている。この雪氷藻類にツボカビという菌類が寄生すると大量死を引き起こしうる。さらに地球温暖化に伴い雪氷藻類へのツボカビ感染は蔓延拡大する可能性がある。そこで，本研究では世界で初めてツボカビと雪氷藻類の宿主寄生者関係を解明し，ツボカビが雪氷藻類に与える影響を評価し，温暖化によるツボカビ感染症動態の変化を予測するために，以下のことを行った。
    1）雪氷藻類とツボカビの宿主寄生者関係の把握
    試料は月山や八甲田など日本国内の積雪生態系から試料を採取し、解析に用いた。顕微鏡観察により各調査地の雪氷藻類へのツボカビ感染を確認すし、観察できた雪氷藻類寄生性ツボカビを1ペアずつ拾いDNA解析を行い(シングルセル解析)，ツボカビと雪氷藻類との対応関係(宿主寄生者ネットワーク)を把握した。その結果、それぞれの地域に固有のツボカビが出現することが明らかとなった。
    2）感染症動態に及ぼす環境要因の解明
    アラスカ・グルカナ氷河において，標高や氷表面形態など環境条件の異なる複数の地点で同時期に集中的に試料採取を行った。ツボカビの感染度合(寄生率・多重感染度)を計数し、環境条件による違いを調べたところ、標高による差は顕著ではなかったが、同じ標高でも水たまり（クリオコナイトホール）で寄生率が高くなることが判明した。
    日本学術振興会, 基盤研究(B), 横浜国立大学, 23K24985
  • 氷河・積雪生態系における雪氷藻類へのツボカビ感染症の動態解明
    科学研究費助成事業
    01 Apr. 2022 - 31 Mar. 2026
    鏡味 麻衣子; 三木 健; 竹内 望; 植竹 淳; 村上 正志; 瀬川 高弘
    日本学術振興会, 基盤研究(B), 横浜国立大学, 22H03731
  • Seasonal change and the origins of bioaerosol in the forest.
    Grants-in-Aid for Scientific Research
    01 Apr. 2022 - 31 Mar. 2025
    植竹 淳
    Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (C), Hokkaido University, 22K06382
  • Expansion of microbial blooming on glaciers induced by abrupt environmental changes
    Grants-in-Aid for Scientific Research
    01 Apr. 2019 - 31 Mar. 2024
    竹内 望; 植竹 淳; 瀬川 高弘; 米澤 隆弘; 幸島 司郎; 服部 祥平
    当初2020年度に予定していたアラスカ氷河の野外調査は，2021年度に予算繰り越しを行い実施する計画を立てていた．しかしながら，新型コロナ感染症の流行は収まることはなく，2021年度も海外野外調査を実施することはできなかった．その代わり，国内の積雪表面を対象に野外調査を実施し，さらに過去に採取された試料の分析をすすめた．国内の積雪では，雪氷藻類の繁殖が進んだ表面には，藻類お捕食者となるクマムシやワムシも多く存在することを発見し，論文で発表した（Ono et al., 2021）．またアラスカの赤雪の分析を進めたところ，赤雪細胞の表面に大量の多糖類が分泌されていることが明らかになり，この多糖類が細胞の凝集効果を持っていることが明らかになり，論文に発表した（Folika et al., 2020）．氷河表面の暗色化の原因物質の一つ，クリオコナイトについても過去に採取したサンプルの分析を進めた．クリオコナイトの粒構造分析を行なった結果，内部では嫌気条件となっており，そこに繁殖する嫌気的細菌類が特に窒素循環に重要な役割を果たしていることが明らかになった（Segawa et al., 2020）．中央アジアの氷河ではアルベドの時空間変動が，クリオコナイトの表面量の変動で説明できることが明らかになった（Yue et al., 2020）． さらに，クリオコナイトには放射性元素が特異的に濃縮していることも明らかになった（Baccolo et al., 2020）．2021年度に繰り越した予算は，研究遂行に必須である雪氷試料の化学成分を分析するイオンクロマトグラフィーが故障したため，一部を新しく購入するために利用した．
    Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (A), Chiba University, 19H01143
  • Elucidation of Changes in the fungal communities in seasonal variations using by next generation sequence
    Grants-in-Aid for Scientific Research
    01 Apr. 2016 - 31 Mar. 2018
    Tsuji Masaharu
    In this study, we investigated the changes of fungal community in soil collected from different season at the same sampling point of East Ongul Island, East Antarctica using by next generation sequencer.
    As a result of next generation sequence analysis, the fungal sequence data were classified to 128 OTU. By detailed analysis of the OTU about changes of the fungal community by different seasons (Spring and Autumn), the fungal community was dramatically changed by seasons. This is a first report about changes of the fungal community by seasons in Antarctica.
    Japan Society for the Promotion of Science, Grant-in-Aid for Challenging Exploratory Research, National Institute of Polar Research, 16K12643
  • Effects of global environmental changes on glacier ecosystems
    Grants-in-Aid for Scientific Research
    01 Apr. 2014 - 31 Mar. 2018
    Kohshima Shiro
    We genetically analyzed microorganisms collected from the glaciers in various part of the world and found regional difference in species composition of bacteria and cyanobacteria in cryoconites, biogenic dark granules on the glacier that accelerate glacier melting. We could also identify symbiotic bacteria of glacier animals. We developed mathematical model simulating changes in cryoconite holes, melt holes on the glacier formed by cryoconite, to establish the mass valance model of the glacier including biological albedo reducing process.
    Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (A), Kyoto University, 26241020
  • 消え行く熱帯氷河の微生物多様性の解明
    科学研究費助成事業
    01 Apr. 2015 - 31 Mar. 2017
    植竹 淳
    昨年度に行ったケニア山の氷河に生息している微生物の多様性に関する予備調査を踏まえ、氷河上での不均一性や同一地点での経年変化、また氷河周辺土壌に与える影響を評価するために、ルイス氷河において観測機器の回収、観測、サンプルの採取を行った。現地に設置したインターバルカメラの結果から、本氷河の融解による表面低下が非常に大きいことがわかり、設置期間中の２０１７年２月に氷河中流部の岩が露出し、ルイス氷河が上下に分断する様子を記録することができた。
    DNA分析の結果、同氷河が隣国のウガンダ、ルウェンゾリ山の氷河よりも中国、天山山脈や北極、スバールバードの氷河に生息している微生物の群集構造に近いことがわかり、氷河上の微生物が全球的な粒子の移動と循環の影響を受けている可能性を示した。
    日本学術振興会, 基盤研究(C), 15K07234
  • Effects of snow impurities and glacial microbes on abrupt warming in the Arctic
    Grants-in-Aid for Scientific Research
    01 Apr. 2011 - 31 Mar. 2016
    Aoki Teruo; MOTOYAMA Hideaki; TAKEUCHI Nozomu; MATOBA Sumito; HORI Masahiro; HACHIKUBO Akihiro; YAMAGUCHI Satoru; TANAKA Yasumichi; IWATA Yukiyoshi; SUGIURA Konosuke; KODAMA Yuji; FUJITA Koji; KUCHIKI Katsuyuki; NIWANO Masashi; HOSAKA Masahiro; HASHIMOTO Akihiro; TANIKAWA Tomonori; TANAKA Yasumichi; UETAKE Jun; NAGATSUKA Naoko; SUGIYAMA Shin; MOTOYOSHI Hiroki; SHIMODA Seiji; MOTOYA Ken
    From field observations on Greenland ice sheet, it was found that the contribution to albedo reduction in accumulation area by snow impurities such as black carbon (BC) is smaller than that by snow grain growth. Drastic surface melting event in July 2012 was accelerated by downward longwave radiation from low cloud. In ablation area, glacial microbes were contained in surface impurities and could contribute to the albedo reduction remarkably. Satellite remote sensing confirmed that the cause of darkening of ice sheet surface after 2000 is snow grain growth in accumulation area and the expansions of bare ice and dark area including glacial microbes in ablation area. We drilled a 223 m ice core in northwest Greenland ice sheet and analyzed the BC concentrations since 1660, which has a peak around 1920-1930 several times higher than the present value.
    Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (S), Japan, Meteorological Research Institute, 23221004
  • Warming events and their impacts during the past 150,000 years viewed from Greenland ice
    Grants-in-Aid for Scientific Research
    01 Apr. 2010 - 31 Mar. 2016
    Azuma Kumiko; KAWAMURA Kenji; FUJITA Shuji; UETAKE Jun; MOTOYAMA Hideaki; HIRABAYASHI Motohiro; KOBASHI Takuro; TAKAMURA Chikako; KURAMOTO Takayuki; SEGAWA Takahiro; AOKI Shuji; AZUMA Nobuhiko; IIZUKA Yoshinori
    We analyzed the ice core drilled under the international project North Greenland Eemian Ice Drilling. The air temperature during the warmest period of Eemian interglacial was warmer than the present by 8℃±４℃, which caused extensive surface melt in north Greenland. The thickness of the northwest Greenland ice sheet decreased by 400±250ｍ during 6000 years, which was much smaller than that had been expected. Mass loss of Antarctic ice sheet should have played a role in sea-level rise during the Eemian. Variations of methane, nitrous oxide, noble gases in the air extracted from the ice core, and those of ionic species and bacterial cell concentrations in ice provided us with valuable information on changes in atmospheric circulation, vegetation, microbial activities, mean ocean temperature etc during the warm periods and abrupt warming events.
    Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (S), National Institute of Polar Research, 22221002
  • Accelerate the melting of tropical glacier by glacier organisms
    Grants-in-Aid for Scientific Research
    01 Apr. 2013 - 31 Mar. 2015
    UETAKE Jun
    Tropical regions are not well represented in glacier biology, yet many tropical glaciers are under threat of disappearance due to climate change. Here we report a novel biogenic aggregation at the terminus of a glacier in the Rwenzori Mountains, Uganda. The material was formed by uniseriate protonemal moss gemmae and protonema. Molecular analysis of five genetic markers determined the taxon as Ceratodon purpureus, a cosmopolitan species that is widespread in tropical to polar region. Given optimal growing temperatures of isolate is 20–30℃, the cold glacier surface might seem unsuitable for this species. However, the cluster of protonema growth reached approximately 10℃ in daytime, suggesting that diurnal increase in temperature may contribute to the moss’s ability to inhabit the glacier surface. The aggregation is also a habitat for microorganisms, and the disappearance of this glacier will lead to the loss of this unique ecosystem.
    Japan Society for the Promotion of Science, Grant-in-Aid for Young Scientists (B), 大学共同利用機関法人情報・システム研究機構(新領域融合研究センター及びライフサイ, 25740012
  • Biological analysis of ice core from Antarctica and reconstruction of past environment
    Grants-in-Aid for Scientific Research
    2008 - 2010
    UETAKE Jun
    In Dome Fuji ice core, filamentous bacteria-like particle, had not been observed in the surface, were found in some layers. As concentration of coccoid bacteria is high in the end of glacial age when dust particle concentration is high, these match suggest coccoid bacteria are transported by wind with other particles like dust. This result indicate similar tendency as previous study in Vostok, and support them. Otherwise, concentration of filamentous bacteria-like particle is high in mid-last glacial age and early-Holocene, and these have no relationship with dust particle.
    Japan Society for the Promotion of Science, Grant-in-Aid for Young Scientists (B), Transdisciplinary Research Integration Center, 20710020