Grant-in-Aid for Scientific Research in Innovative Areas (MEXT) 2015-2019

Ocean Mixing Processes: Impact on Biogeochemistry, Climate and Ecosystem

A03-5 Group

A03-5 Study on the change in lower trophic ecosystem and its complex mechanism in the North Pacific

   Research Summary

Fig. 1 Nutrient supply and lower trophic ecosystem in the ocean (by Maki)

Primary production is controlled by insolation, temperature, and nutrient supply. Nutrient supply mechanism is still unknown due to its complexity although the insolation and temperature is regulated by the seasonality at each latitude. The aims of this study is 1) to understand how primary and secondary producers response on the several potential nutrient supply processes associated with physical mechanisms such as atmospheric dynamics, vertical mixing and ocean current in the western North Pacific at where the most active biological drawdown of sea surface pCO2 area works in the world; 2) to clarify the controlling factor in terms of specific nutrient supply and lower trophic level organisms production from sub-tropical to sub-arctic in the North Pacific.

img_a03-5-22e

 

 

 

 

   Members

Principal investigator : Naomi Harada
(JAMSTEC Research and Development Center for Global Change)
http://www.jamstec.go.jp/res/ress/haradan/e/

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Co-investigator : Tetsuichi Fujiki
(JAMSTEC R&D Center for Global Change, Marine Ecosystem Dynamics Research Group)
http://www.jamstec.go.jp/res/ress/tfujiki/e/

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Co-investigator : Maki Aita-Noguchi
(JAMSTEC R&D Center for Global Change, Marine Ecosystem Dynamics Research Group)
http://www.jamstec.go.jp/res/ress/macky/

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Collaborator : Makio Honda
(JAMSTE Department of Environmental Geochemical Cycle Research)
http://www.jamstec.go.jp/res/ress/hondam/e/

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Collaborator : Minoru Kitamura
(JAMSTEC Research and Development Center for Global Change)

 

 

 

 

Collaborator : Osamu Seki
( Institute of Low Temperature Science, Hokkaido University)
http://environ.lowtem.hokudai.ac.jp/seki/english/seki_tope.htm

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Collaborator : Yoshihisa Mino
( Institute for Space-Earth Environmental Research, Nagoya University)
http://co2.hyarc.nagoya-u.ac.jp/labhp/member/mino/top.htm

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Joint Cooperator : Megumi Chikamoto
(International Pacific Research Center, University of Hawaii)
http://iprc.soest.hawaii.edu/users/megumich/index.html

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Joint Cooperator : Takuhei Shiozaki
(JAMSTEC Research and Development Center for Global Change)