2013 Fiscal Year Final Research Report
Mechanism driving depleted anchovy and sardine abundance and their amplitude/periodicity changes on decadal timescales during the Medieval Warm Period
| Project/Area Number |
22340155
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Stratigraphy/Paleontology
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| Research Institution | Ehime University |
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Principal Investigator |
KUWAE Michinobu 愛媛大学, 沿岸環境科学研究センター, 准教授 (70448380)
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| Co-Investigator(Kenkyū-buntansha) |
YAMAMOTO Masanobu 北海道大学, 地球環境科学研究院, 准教授 (60332475)
NAKAMURA Yugo 北海道大学, 理学研究科, 非常勤研究員 (00466468)
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| Co-Investigator(Renkei-kenkyūsha) |
TAKEMURA Keiji 京都大学, 理学研究科, 教授 (00201608)
SUGIMOTO Takashige 東海大学, 海洋学部, 教授 (00201608)
MORIYA Kazuyoshi 早稲田大学, 教育・総合科学学術院, 助手 (60447662)
TANI Yukinori 静岡県立大学, 環境科学研究所, 准教授 (10285190)
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| Project Period (FY) |
2010-04-01 – 2014-03-31
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| Keywords | イワシ類 / 魚類資源変動 / 海洋生態系 / 気候変動 / 太平洋 / レジームシフト / 中世温暖期 |
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| Research Abstract |
To elucidate how decadal-scale variability of Japanese sardine stock will change in relation to global ocean warming, we examined changes in amplitude of sardine decadal variability and changes in peleotemperature and paleoploductivity around Medieval Climate Anomaly as an analogue for their response to climate change. Sardine abundance was reconstructed from coastal marine sediments of Beppu Bay, Japan. The record showed centennial-scale variability (250-300 years) and no clear response of sardine to climate changes corresponding to Medieval Climate Anomaly/Little Ice Age transitions in the western North Pacific. Rather, centennial variability of sardine abundance showed a similar pattern to basin-wide climate variability found in the reconstructed PDO index in the North America and the abnormal snow index in the East Asia. It is possible that one of driving factors of the centennial variations in sardine abundance is prey abundance in the western North Pacific.
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Research Products
(56 results)
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[Presentation] 2012 Late Holocene human impact on vegetation changes around Beppu Bay in northeast Kyushu2012
Author(s)
Misaki Shimada, Hikaru Takahara, Michinobu Kuwae, Masanobu Yamamoto, Ken Ikehara, Tomohisa Irino, Keiji Takemura, Takuya Sagawa, Tatsuhiko Sakamoto, Minoru Ikehara, Hidetaka Takeoka
Organizer
southwest Japan based on the influx pollen data dated by a wiggle-matching. IPC/IOPC 2012
Place of Presentation
Tokyo
Year and Date
2012-08-29
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[Presentation] TEX86 and seasonal distributions of archaeal membrane lipids across the chemocline in the modern shallow coastal ocean2012
Author(s)
Moriya K., Kuwae M., Yamamoto M., Kunihiro T., Onishi H., Hamaoka H., Saito M., Sagawa T., Fujii N., Yoshie N., Omori K., Takeoka H
Organizer
Japan Geoscience Union Meeting
Year and Date
2012-05-25
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[Presentation] Distributions of mesophilic archaeotal membrane lipids and TEX86 thermometry in the modern enclosed shallow coastal anoxic basin2012
Author(s)
Moriya K, M. Kuwae, M. Yamamoto, T. Kunihiro, H. Onishi, H. Hamaoka, M. Saito, T. Sagawa, J. Shibata, N. Fujii, N. Yoshie, K. Omori, and H. Takeoka
Organizer
European Geosciences Union General Assembly
Place of Presentation
Austria
Year and Date
2012-02-27
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[Presentation] Distributions of archaeal membrane lipid and DNA within the modern coastal shallow marine water column2011
Author(s)
Kazuyoshi Moriya, Michinobu Kuwae, Masanobu Yamamoto, Tadao Kunihiro, Hidejiro Onishi, Mitsuyo Saito, Hideki Hamaoka, Takuya Sagawa, Junya Shibata, Naoki Fujii, Naoki Yoshie, Koji Omori, Hidetaka Takeoka
Organizer
Japan Geoscience Union Meeting
Place of Presentation
Chiba
Year and Date
2011-05-26
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[Presentation] Stratigraphic variations of terrigenous organic carbon ratios in flood and slope failure sediments of marine area, examples from the modern natural disasters of Japan
Author(s)
Omura, A., Ikehara, K., Katayama, H., Usami, K., Irino, T., Kuwae, M., Shirai, M., Ashi, J
Organizer
International Sedimentological Congress
Place of Presentation
ジュネーブ
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