High resolution climate records in modern and fossil corals in past warm periods: Analog for future global warming

2017 Fiscal Year Final Research Report

• Project/Area Number: 25257207
• Research Category: Grant-in-Aid for Scientific Research (A)
• Allocation Type: Single-year Grants
• Section: 海外学術
• Research Field: Stratigraphy/Paleontology
• Research Institution: Hokkaido University
• Principal Investigator: WATANABE Tsuyoshi 北海道大学, 理学研究院, 講師 (80396283)
• Co-Investigator(Renkei-kenkyūsha): MIYAJI Tsuzumi 北海道大学, 大学院理学研究院, 博士研究員 (40623062) ; IKEDA Masataka 北海道大学, 高等教育機能開発総合センター, 技術専門職員 (00621517)
• Project Period (FY): 2013-10-21 – 2018-03-31
• Keywords: 生態系保全 / サンゴ礁 / オマーン / 化石サンゴ / 温暖期 / 生物源炭酸塩 / 酸素同位体比

Outline of Final Research Achievements

We reconstructed environmental and calcification changes during past different warming periods using modern and fossil skeletons of reef builders in order to estimate the responses of coral reefs and biodiversity in future global warming. In our results, calcification rates of major reef builders were varied among each warming periods. The responses in their calcification rates were not only explained by temperature, but also influenced by the interaction with environmental factors such as temperature, salinity, nutrients, acidification, and sea level changes. Each factors were also complex influenced by their seasonal variability, climatic-ecological events, the surviving strategy of each reef builders.

Free Research Field

地球環境学