Exploring photosymbiotic ecology in planktic foraminifers with chamber-by-chamber isotope analyses
Project/Area Number |
24654169
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Research Category |
Grant-in-Aid for Challenging Exploratory Research
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Allocation Type | Single-year Grants |
Research Field |
Stratigraphy/Paleontology
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Research Institution | Kanazawa University |
Principal Investigator |
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Co-Investigator(Kenkyū-buntansha) |
ISHIMURA Toyoho 茨城工業高等専門学校, 物質工学科, 准教授 (80422012)
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Project Period (FY) |
2012-04-01 – 2014-03-31
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Project Status |
Completed (Fiscal Year 2013)
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Budget Amount *help |
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2013: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2012: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
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Keywords | 炭素同位体比 / 酸素同位体比 / 浮遊性有孔虫 / 光共生 / 統合国際深海掘削計画 / 進化 / 統合国際深海掘削 / 古生態 / 古環境 / 地球生命史 |
Research Abstract |
This study examined chamber-by-chamber stable isotopes (carbon and oxygen) of foraminiferal individuals to identify photosymbiotic signals. We observed an ontogenetic increase in carbon isotopes of up to 2.4 permil, accompanied by relatively stable, negative oxygen isotopes, in the symbiotic species. In contrast, carbon and oxygen isotopes showed significant positive correlation during ontogeny in the asymbiotic species. These two ecological groups produce contrasting isotopic profiles, thereby our ontogenetic isotopic analyses of individual specimens can be used to identify algal photosymbiosis in fossil foraminifers. The chamber-by-chamber isotope analyses with individual ontogeny have great advantages in analyzing rare occurring species because of only one individual is required to describe ontogenetic isotopic history.
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Report
(3 results)
Research Products
(27 results)
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[Journal Article] Evolution of the neodymium isotopic signature of neritic seawater on a northwestern Pacific margin: new constrains on possible end-members for the composition of deep-water masses in the Late Cretaceous ocean2013
Author(s)
Moiroud, M., Puceat, E., Donnadieu, Y., Bayon, G., Moriya, K., Deconinck, J.-F., and Boyet, M.
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Journal Title
Chemical Geology
Volume: 356
Pages: 160-170
DOI
Related Report
Peer Reviewed
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[Journal Article] Limited latitudinal mantle plume motion for the Louisville hotspot2012
Author(s)
Koppers, A.A.P., Yamazaki, T., Geldmacher, J., Gee, J. S., Pressling, N., Hoshi, H. et al.
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Journal Title
Nature Geoscience
Volume: 5
Issue: 12
Pages: 911-917
DOI
Related Report
Peer Reviewed
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[Presentation] Chamber-by-chamber isotopic history of individual planktic foraminifers : Detection of photosymbiotic ecology from fossils2013
Author(s)
Takagi, H., Moriya, K., Ishimura, T., Suzuki, A., Kawahata, H. and Hirano, H.
Organizer
11th International Conference on Paleoceanography
Place of Presentation
Sitges
Related Report
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[Presentation] Ontogenetic Stable Isotope Records of Modern Planktic Foraminifers from Sagami Bay2013
Author(s)
Takagi, H., Moriya, K., Ishimura, T., Suzuki, A., Kawahata, H. and Hirano, H.
Organizer
Japan. Goldschmidt 2013
Place of Presentation
Florence
Related Report
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[Presentation] Chamber-by-chamber isotopic history of individual planktic foraminifers: Detection of photosymbiotic ecology from fossils.2013
Author(s)
Takagi, H., Moriya, K., Ishimura, T., Suzuki, A., Kawahata, H. and Hirano, H.
Organizer
11th International Conference on Paleoceanography
Place of Presentation
Sitges
Related Report
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[Presentation] Ontogenetic Stable Isotope Records of Modern Planktic Foraminifers from Sagami Bay, Japan.2013
Author(s)
Takagi, H., Moriya, K., Ishimura, T., Suzuki, A., Kawahata, H. and Hirano, H.
Organizer
Goldschmidt 2013
Place of Presentation
Florence
Related Report
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[Presentation] 2012. Detecting algal photosymbiosis from ontogenetic isotope analyses of living planktonic foraminiferal test from Sagami Bay2012
Author(s)
Takagi, H., Moriya, K., Ishimura, T., Suzuki, A., Kawahata, H., and Hirano, H.
Organizer
Japan Geosciences Union Meeting 2012 joint Session with European Geosciences Union
Place of Presentation
Makuhari
Related Report
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[Presentation] 2012. Individual ontogenetic stable isotope records of Recent planktonic foraminifers : Testing for algal photosymbiosis2012
Author(s)
Takagi, H., Moriya, K., Ishimura, T., Suzuki, A., Kawahata, H., Hirano, H., and IODP Exp. 330 Scientists
Organizer
European Geoscience Union General Assembly 2012
Place of Presentation
Vienna
Related Report
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[Presentation] Detecting algal photosymbiosis from ontogenetic isotope analyses of living planktonic foraminiferal test from Sagami Bay2012
Author(s)
Takagi, H., Moriya, K., Ishimura, T., Suzuki, A., Kawahata, H., and Hirano, H.
Organizer
Japan Geosciences Union Meeting 2012
Place of Presentation
Makuhari
Related Report
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[Presentation] ndividual ontogenetic stable isotope records of Recent planktonic foraminifers: Testing for algal photosymbiosis2012
Author(s)
Takagi, H., Moriya, K., Ishimura, T., Suzuki, A., Kawahata, H., Hirano, H., and IODP Exp. 330 Scientists
Organizer
European Geoscience Union General Assembly 2012
Place of Presentation
Vienna
Related Report
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[Book] Proc. IODP, 3302012
Author(s)
Koppers, A.A.P., Yamazaki, T., Geldmacher, J., and the Expedition 330 Scientists
Publisher
Integrated Ocean Drilling Program Management International, Inc.
Related Report
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