Study on climate proxies in coral skeleton using cultured specimens

• Project/Area Number: 18340180
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Geochemistry/Astrochemistry
• Research Institution: National Institute of Advanced Industrial Science and Technology
• Principal Investigator: SUZUKI Atsushi National Institute of Advanced Industrial Science and Technology, 地質情報研究部門, 主任研究員 (60344199)
• Co-Investigator(Kenkyū-buntansha): KAWAHATA Hodaka 東京大学, 大学院新領域創成科学研究科研, 教授 (20356851) ; SAKAI Kazuhiko 琉球大学, 熱帯生物圏研究センター, 教授 (50153838) ; MURAKAMI Akio 神戸大学, 内海域環境教育研究センター, 准教授 (50304134) ; OKAI Takashi 産業技術総合研究所, 地質情報研究部門, 主任研究員 (20356679) ; MURAYAMA Shohei 業技術総合研究所, 環境管理技術研究部門, 主任研究員 (30222433)
• Project Period (FY): 2006 – 2008
• Project Status: Completed (Fiscal Year 2008)
• Budget Amount: ¥17,280,000 (Direct Cost: ¥14,700,000、Indirect Cost: ¥2,580,000); Fiscal Year 2008: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000); Fiscal Year 2007: ¥6,760,000 (Direct Cost: ¥5,200,000、Indirect Cost: ¥1,560,000); Fiscal Year 2006: ¥6,100,000 (Direct Cost: ¥6,100,000)
• Keywords: 同位体 / 生物鉱化作用 / 酸素同位体比 / 海水温 / サンゴ / 炭酸カルシウム / 水温 / 成長速度 / 炭素同位体比

Research Abstract

造礁サンゴ骨格は,月から週の時間分解能で熱帯および亜熱帯の浅海域の古気候・環境情報を保持しうる試料である。サンゴ骨格の酸素同位体比の変化は,基本的には海水温と海水の酸素同位体比(塩分に相関)を反映する。しかし,サンゴには骨格の酸素・炭素同位体比が平衡値からずれるという「生物学的効果(vital effect )」が認められ,これは石灰化反応に内在する反応速度論的同位体効果によるものと考えられている。本研究課題では、ハマサンゴ(Porites australiensis)を用いた5 段階恒温サンゴ飼育実験を行い、にその骨格について、酸素同位体比およびSr/Ca 比等を分析し、骨格成長速度依存性を検討した。これらの化学組成に群体依存性が見出され、成長速度が速い群体ほど、酸素同位体比は高温を指標し、Sr/Ca 比は低温を指標する傾向が見られた。サンゴ記録から正確な古気候情報を読み出す場合には、成長速度の変化について注意が求めらる。

Research Products

• [Journal Article] Influence of water flow on skeletal isotopic composition in the coral Pocillopora damicornis (2008)
  • Author(s): Suzuki, A., Nakamura, T., Yamasaki, H., Minoshima, K., Kawahata, H
  • Journal Title: Coral Reefs 27 Pages: 209-218
• [Journal Article] East Asian monsoon to El Nino/Southerm Oscillation: A shift in the winter climate of Ishigaki Island accompanying the 1988/1989 regime shift, based on instrumental and coral records (2008)
  • Author(s): Tsunoda, T., Kawahata, H., Suzuki, A., Minoshima, K., Shikazono, N
  • Journal Title: Geophysical Research Letters 35
• [Journal Article] Identification of 1771 Meiwa Tsunami deposits using a combination of radiocarbon dating and oxygen isotope microprofiling of emerged massive Porites boulders (2008)
  • Author(s): Suzuki, A., Yokoyama, Y., Kan, H., Minoshima, K., Matsuzaki, H., Hamanaka, N., Kawahata, H
  • Journal Title: Quaternary Geochronology 3 Pages: 226-234
• [Journal Article] Phototropic adjustment of the foliaceous coral Echinopora lamellosa in Palau. (2008)
  • Author(s): Iwase, A., Sakai, K., Suzuki, A., van Woesik, R
  • Journal Title: Estuarine, Coastal and Shelf Science 77 Pages: 672-678
• [Journal Article] Effect of photosynthetic light dosage on carbon isotope composition in the coral skeleton: Long-term culture of Porites spp (2008)
  • Author(s): Omata, T., Suzuki, A., Sato, T., Minoshima, K., Nomaru, E., Murakami, A., Murayama, S., Kawahata, H., Maruyama, T
  • Journal Title: Journal of Geophysical Research-Biogeosciences 113
• [Journal Article] Endolithic aspartic acid as a proxy of fluctuations in coral growth (2008)
  • Author(s): Gupta, L.P., Suzuki, A., Kawahata, H
  • Journal Title: Journal of Geophysical Research-Biogeosciences 112
• [Journal Article] East Asian monsoon to El Nino/Southern Oscillation : A shift in the winter climate of Ishigaki Island accompanying the 1988/1989 regime shift, based on instrumental and coral records (2008)
  • Author(s): Tsunoda, T., H. Kawahata, A. Suzuki, K. Minoshima, N. Shikazono
  • Journal Title: Geophysical Research Letters 35
  • Peer Reviewed
• [Journal Article] Identification of 1771 Meiwa Tsunami deposits using a combination of radiocarbon dating and oxygen isotope microprofiling of emerged massive Porites boulders (2008)
  • Author(s): Suzuki, A., Yokoyama, Y., Kan, H., Minoshima, K., Matsuzaki, H., Hamanaka, N., Kawahata, H.
  • Journal Title: Quaternary Geochronology 3 Pages: 226-234
  • Peer Reviewed
• [Journal Article] Effect of photosynthetic light dosage on carbon isotope composition in the coral skeleton : Long-term culture of Porites spp (2008)
  • Author(s): Omata, T., Suzuki, A., Sato, T., Minoshima, K., Nomaru, E., Murakami, A., Murayama, S., Kawahata, H., Maruyama, T.
  • Journal Title: Journal of Geophysical Research-Biogeosciences 113
  • Peer Reviewed
• [Journal Article] Influence of water-flow on skeletal isotopic compositions of branching coral Pocilopora damicornis (2008)
  • Author(s): Suzuki, A.、 Nakamura, T., Yamasaki, H.、 Minoshima, K.、 Kawahata, H.
  • Journal Title: CORAL REEFS 27 Pages: 209-218
  • Peer Reviewed
• [Journal Article] Empiricalassessment of coral Sr/Ca and Mg/Ca ratios as climate proxies using colonies grown at different temperatures (2007)
  • Author(s): Inoue, M., Suzuki, A., Nohara, M., Hibino, K ., Kawahata, H
  • Journal Title: Geophysical Research Letters 34
• [Journal Article] Empirical assessment of coral Sr/Ca and Mg/Ca ratios as climate proxies using colonies grown at different temperatures (2007)
  • Author(s): Inoue, M.、 Suzuki, A.、 Nohara, M.、 Hibino, K.、 Kawahata, H.
  • Journal Title: GEOPHYSICAL RESEARCHLET丁ERS 34-6 Pages: 12611-12611
  • Peer Reviewed
• [Journal Article] Endolithic aspartic acid as a proxy of fluctuations in coral growth. doi:10.1029/2006JG000242. (2007)
  • Author(s): Gupta L.P., Suzuki A, Kawahata H
  • Journal Title: Journal of Geophysical Reserch-Biogeosciences. 112
• [Journal Article] サンゴなどの生物起源炭酸塩および鍾乳石の酵素・炭素同位体比にみる反応速度論的効果 (2007)
  • Author(s): 鈴木 淳, 川幡穂高
  • Journal Title: 地球化学 41 Pages: 17-33
• [Journal Article] Aspartic acid concentrations in coral skeletons as recorders of past disturbances of metabolic rates (2006)
  • Author(s): Gupta, L.P., Suzuki, A., Kawahata, H
  • Journal Title: Coral Reefs 25 Pages: 599-606
• [Journal Article] Oxygen and carbon stable isotope systematics in Porites coral near its latitudinal limit: The coral response to low-thermal temperature stress (2006)
  • Author(s): Omata, T., Suzuki, A., Kawahata, H., Nojima, S., Minoshima, K., Hata, A
  • Journal Title: Global and Planetary Change 53 Pages: 137-146
• [Journal Article] Stable Isotope and chemical Composition of Pearls : Biomineralization in Cultured Pearl Oysters in Ago Bay. (2006)
  • Author(s): Kawahata H, Inoue M, Nohara M, Suzuki A
  • Journal Title: Journal of Oceanography 62 Pages: 405-412
• [Journal Article] Oxygen and carbon stable isotope sysmtematics in coral near its latitudinal limit : the coral response to low thermal stress. (2006)
  • Author(s): Umeta T, Suzuki A, Kawahata H, Nojima S, Hata A
  • Journal Title: Global and Planetary Change 53 Pages: 137-146
• [Journal Article] Distribution and temporal changes of lead in the surface seawater in the western Pacific and adjacent seas derived from coral skeletons. (2006)
  • Author(s): Inoue M, Hata A, Suzuki A, Nohara M, Shikazono N, Yim W.W.-S, Hantoro W, Sun D., Kawabata H
  • Journal Title: Evnvironmental Pollution 144 Pages: 10045-1052
• [Journal Article] Aspartic acid concentrations in coral skeletons as recorders of past disturbances of metabolic rates. (2006)
  • Author(s): Gupta, L.P., Suzuki A, Kawabata H
  • Journal Title: Coral Reefs 25 Pages: 599-606
• [Presentation] サンゴ骨格の酸素同位体比温度計の安定性に関する飼育実験による検討 (2008)
  • Author(s): 鈴木 淳, 古賀奏子, 酒井一彦, 井上麻夕里, 川幡穂高
  • Organizer: 日本地球化学会
  • Place of Presentation: 東京都(東京大学)
  • Year and Date: 2008-09-18
• [Presentation] サンゴ骨格の酸素同位体比温度計の安定性に関する飼育実験による検討 (2008)
  • Author(s): 鈴木淳, 古賀奏子, 酒井一彦, 井上麻夕里, 川幡穂高
  • Organizer: 日本地球化学会
  • Place of Presentation: 東京都
  • Year and Date: 2008-09-18
• [Presentation] 流れがサンゴ骨格の酸素・炭素同位体比に与える影響について (2007)
  • Author(s): 鈴木 淳, 中村 崇, 山崎秀雄, 蓑島佳代, 川幡穂高
  • Organizer: 2007年度日本海洋学会秋季大会
  • Place of Presentation: 沖縄県西原町(琉球大学)
  • Year and Date: 2007-09-27
• [Presentation] 流れがサンゴ骨格の酸素・炭素同位体比に与える影響について (2007)
  • Author(s): 鈴木 淳、中村 崇、山崎 秀雄、蓑島 佳代、川幡 穂高
  • Organizer: 2007年度日本海洋学会秋季大会
  • Place of Presentation: 琉球大工学部
  • Year and Date: 2007-09-27
• [Book] Coral records of the 1990s in the tropical northwest Pacific: ENSO, mass coral bleaching, and global warming. In: "Global Climate Change and Response of Carbon Cycle in the Equatorial Pacific and Indian Oceans and Adjacent Landmasses" (H. Kawahata and Y. Awaya ed.) (2006)
  • Author(s): Suzuki, A., Gagan, M.K., Kan, H., Edward, A., Siringan, F. P. Yoneda, M., Kawahata, H
  • Publisher: Elsevier Oceanography Series
• [Remarks]
  • URL: http://staff.aist.go.jp/a.suzuki