Topics

2021

February

2021.2.22 NEW
We started "Acquisition service of morphology and bulk density for micro-sized objects by Micro-Focus X-ray Computed Tomography (μXCT)".


2020

November

2020.11.26
We have uploaded research and development plans on "Observational innovation using hyperspectra, drones and high-resolution satellites" of the Environmental Geochemical Cycle Research Group.


May

2020.5.22
We have uploaded "Activity of Ocean variation and geochemical cycle team in 2019" of the Environmental Geochemical Cycle Research Group.


January

2020.1.24
On 16 Jan, we had an ESS center-wide meeting and exchanged our research results in this fiscal year.


2019

December

2019.12.26
Observational study of the ocean acidification began at the coastal area of the southern Sea of Okhotsk

In order to evaluate changes in the marine environment and marine life on the coastal area of the Sea of Okhotsk, two pH / pCO2 sensors were installed at a depth of 5 m in the port of Monbetsu, and observations began in December 2019.
This observation will continue until FY2022.

This research is conducted based on a joint research agreement between the Research Institute for Global Change (RIGC), Japan Agency for Marine-Earth Science and Technology and Monbetsu City.


Installation of Sensors
Installation of Sensors
pH/pCO2 sensors were deployed at near the sea floor.
pH/pCO2 sensors were deployed at near the sea floor.
pH/pCO2 sensors were moored from the bridge between the Okhotsk Garinko Tower and a breakwater.
pH/pCO2 sensors were moored from the bridge between the Okhotsk Garinko Tower and a breakwater.

2019.12.17
A new foraminiferal test dissolution index using X-ray micro CT scanning enables to reconstruct past deep seawater carbonate ion concentration


Title: Micro‐CT Scanning of Tests of Three Planktic Foraminiferal Species to Clarify Dissolution Process and Progress
Authors: Shinya Iwasaki, Katsunori Kimoto, Yusuke Okazaki, Minoru, Ikehara
Journal: Geochemistry Geophysics Geosystems

<Abstract>
In this study, we observed dissolution processes of three species of planktic foraminiferal test using by X-ray micro CT scanning, and tested the ability of a new foraminiferal test dissolution index. As a result, we suggested that X-ray micro CT scanning is applicable for evaluating the intensity of foraminiferal test dissolution at the undersaturated deep seafloor in the western North Pacific area and is an invaluable proxy for detecting deep seawater carbonate ion concentration changes on glacial interglacial timescales.

November

2019.11.12
Dr. Yugo Kanaya was honored with the 2019 Horiuchi Award of the Meteorological Society of Japan

Dr. Yugo Kanaya (Earth Surface System Research Center, RIGC) received the 2019 Horiuchi Award of the Meteorological Society of Japan. This award is for an individual who has made a significant contribution in interdisciplinary fields related to atmospheric sciences. The award ceremony and award commemorative lecture were held on October 29, 2019, during the 2019 MSJ autumn meeting in Fukuoka.


Dr. Yugo Kanaya (left) with Professor Toshiki Iwasaki, President of the Meteorological Society of Japan (right), in the ceremony.

October

2019.10.1
We added new data to "KEO time-series sediment trap data".


September

2019.9.13
Phaeodaria, a large marine protozoa (Cercozoa) plays great contribution to POC transportation in the North Pacific
(Co-author:Katsunori Kimoto, Miyako Sato, Makio Honda, Naomi Harada, Tetsuichi Fujiki


Phaeodaria: An Important Carrier of Particulate Organic Carbon in the Mesopelagic Twilight Zone of the North Pacific Ocean

Takahito Ikenoue, Katsunori Kimoto, Yusuke Okazaki, Miyako Sato, Makio C. Honda, Kozo Takahashi, Naomi Harada, Tetsuichi Fujiki

<Abstract>
The focus of our study is the large number of phaeodarians among the >1 mm sinking particles, which have traditionally been excluded when estimating sinking particle fluxes. Our study revealed that >1 mm sinking particles exported substantial amount of particulate organic carbon in the western North Pacific and that one of the major carriers in the mesopelagic zone was Phaeodaria. Previous studies estimated phaeodarian carbon contents from the biovolumes and existing conversion factor. However, there have been actually no direct measurements of carbon contents in phaeodarians, unless our present study. Our simple dissection method and direct measurement of the organic carbon content in phaeodarians will be an important step to elucidate the global contribution of phaeodarians to the biological carbon pump.

July

2019.7.22
Shell density of planktic foraminifers are affected by Ocean acidification in the North Pacific


June

2019.6.18
We have uploaded "Activity of Ocean variation and geochemical cycle team in 2018" of the Environmental Geochemical Cycle Research Group.


May

2019.5.27
Employment Opportunities


April

2019.4.1
Reorganization from RCGC to ESS.


2018

December

2018.12.3
We held a "Ecosystem Group Guest Seminar".
Speaker: Onur Kerimoglu (Helmholtz-Zentrum Geesthacht)


November

2018.11.9
We held a "Ecosystem Group Guest Seminar".
Speaker: George L. Hunt, Jr. (Univ. of Washington)


October

2018.10.29
We held a "Ecosystem Group Guest Seminar".
Speaker: Chih-hao Hsieh (Institute of Oceanography, National Taiwan University, Taiwan)


June

2018.6.26
We held a "Ecosystem Group Seminar".
Speaker: Yoshikazu Sasai and S. Lan Smith


2018.6.21
KEO sediment trap data 2016-2017 is released to the public.


May

2018.5.24 
We held a "Ecosystem Group Seminar".
Speaker: Minoru Kitamura and Siri Ofstad


2018.5.1
We held a "Ecosystem Group Seminar".
Speaker: Eko Siswanto and Kana Nagashima


April

2018.4.5
Report on Research Activity 2017 by the Ocean team of Department of Environmental Geochemical Cycle Research was posted.


March

2018.3.29
We held a "Ecosystem Group Seminar".
Speaker: Miyako Sato and Yuriko Nakamura


2018.3.12
We held a "Ecosystem Group Seminar".
Speaker: Maki Noguchi Aita and Erina Shima


February

2018.2.26
We held a "Ecosystem Group Seminar".
Speaker: Carmen García-Comas and Jonaotaro Onodera


2018.2.13
We held a "Ecosystem Group Seminar".
Speaker: Hajime Kimura and Takuhei Shiozaki


January

2018.1.30
We held a "Ecosystem Group Seminar".
Speaker: Bingzhang Chen and Siri Ofstad


2018.1.15
We held a "Ecosystem Group Seminar".
Speaker: Tetsuichi Fujiki and Naomi Harada


2017

December

2017.12.25
We held a "Ecosystem Group Seminar".
Speaker: Koji Sugie


2017.12.15
We held a "Ecosystem Group Guest Seminar".
Speaker: Tasuku Akagi (Department of Earth and Planetary Sciences, Kyushu University)


November

2017.11.30
We held a "Ecosystem Group Guest Seminar".
Speaker: Dr. Esteban Acevedo-Trejos (Dept. Theoretical Ecology and Modelling, Leibniz-Zentrum für Marine Tropenforschung (ZMT) GmbH, Leibniz Centre for Tropical Marine Research)


2017.11.17
We held a "Ecosystem Group Seminar".
Speaker: S. Lan Smith, Bingzhang Chen, Sergio M. Vallina (Gijon Oceanography Centre (IEO), Spanish Institute of Oceanography) and Katsunori Kimoto


2017.11.2
We held a "Ecosystem Group Seminar".
Speaker: Minoru Kitamura and Taketo Hashioka


October

2017.10.10
We held a "Ecosystem Group Seminar".
Speaker: Kana Nagashima and Yoshikazu Sasai


September

2016.9.28
Employment Opportunities


2017.9.25
We held a "Ecosystem Group Seminar".
Speaker: Eko Siswanto


2017.9.12
We held a "Ecosystem Group Guest Seminar".
Speaker: Sergio Vallina (Gijon Oceanography Centre (IEO), Spanish Institute of Oceanography)


August

2017.8.31
New group "Environmental Geochemical Cycle Research Group" was established on 1 July 2017 (detail is in their HP).


2017.8.17
We held a "Ecosystem Group Guest Seminar".
Speaker: Yoshio Masuda, Yasuhiro Yamanaka (Hokkaido University)


June

2017.6.26
We held a "Ecosystem Group Guest Seminar".
Speaker: Megumi Chikamoto (Utah State University / IPRC, University of Hawaii) 


2017.6.5
We held a "Ecosystem Group Seminar".
Speaker: Jonaotaro Onodera and Takuhei Shiozaki


May

2017.5.22
We held a "Ecosystem Group Seminar".
Speaker: Maki Noguchi Aita and Naomi Harada


2017.5.1
We held a "Ecosystem Group Seminar".
Speaker: Erina shima and Hajime Kimura


April

2017.4.17
We held a "Ecosystem Group Seminar".
Speaker: Bingzhang Chen, S. Lan Smith and Shinya Iwasaki


March

2017.3.24
We held a "Ecosystem Group Seminar".
Speaker: Miyako Satoh and Yuriko Nakamura


2017.3.14
We held a "Ecosystem Group Seminar".
Speaker: Tomoko Yoshiki and S. Lan Smith, Taketo Hashioka, Bingzhang Chen


February

2017.2.28
We held a "Ecosystem Group Seminar".
Speaker: Tetsuichi Fujiki and Katsunori Kimoto


2017.2.14
We held a "Ecosystem Group Seminar".
Speaker: Taketo Hashioka and Minoru Kitamura


January

2017.1.27
We held a "Ecosystem Group Seminar".
Speaker: Koji Sugie and Carmen Garcia-Comas Rubio


2017.1.13
We held a "Ecosystem Group Seminar".
Speaker: Yoshikazu Sasai and Bingzhang Chen


2016

December

2016.12.26
We held a "Ecosystem Group Seminar".
Speaker: Eko Siswanto and Naomi Harada GL.


2016.12.16
We held a "Ecosystem Group Guest Seminar".
Speaker: Simone Taglialatela (Instituto de Ciencias Marinas de Andalucía, Department of Coastal Ecology and Management, Consejo Superior de Investigaciones Cientificas (CSIC) - Spanish National Research Council)


November

2016.11.11
We held a "Ecosystem Group Guest Seminar".
Speaker: Abigail McQuatters-Gollop (Centre for Marine Conservation and Policy, Plymouth University, UK)


October

2016.10.31
We held a "Ecosystem Group Guest Seminar".
Speaker: Dr. Hongbin Liu (Hong Kong University of Science and Technology)


2016.10.3
We held a "Ecosystem Group Seminar".
Speaker: Kana Nagashima and Maki Noguchi Aita


September

2016.9.15
Employment Opportunities


2016.9.12
We held a "Ecosystem Group Seminar".
Speaker: Markus Pahlow (GEOMAR, Germany) and Carmen Garcia-Comas Rubio


2016.9.6
We held a "Ecosystem Group Seminar".
Speaker: S. Lan Smith


August

2016.8.5
We held a "Ecosystem Group Seminar".
Speaker: Inah Seo (the guest from Korea Institute of Ocean Science and Technology) and Keisuke Shimizu (the guest from R&D Center for Marine Biosciences)


July

2016.7.22
We held a "Ecosystem Group Seminar".
Speaker: Koji sugie and Jose Luis Otero-Ferrer (The guest from Departamento de Ecoloxía e Bioloxía Animal, Universidade de Vigo, Spain)


June

2016.6.10
We held a "Ecosystem Group Seminar".
Speaker: Bing-Zhang Chen and Naomi Harada


May

2016.5.13
We held a "Ecosystem Group Seminar".
Speaker: Minoru Kitamura and Yoshikazu Sasai


April

2016.4.26
We held a "Ecosystem Group Seminar".
Speaker: Eko Siswanto and Katsunori Kimoto


2016.4.25
Employment Opportunities


2016.4.15
We held a "Ecosystem Group Seminar".
Speaker: Tetsuichi fujiki and Taketo Hashioka


March

2016.3.29
We held a "Ecosystem Group Seminar".
Speaker: Yuriko Nakamura and Maki Noguchi, Sanae Chiba, Kazuaki Tadokoro


February

2016.2.9
We held a "Ecosystem Group Seminar".
Speaker: Takuhei Shiozaki


2016.2.1
Press Releases:
Argo’s Global Array of Profiling Floats Revealed Ocean Changes
―Fifteen years of ocean observations and further challenges―


January

2016.1.22
We held a "Ecosystem Group Seminar".
Speaker: Carmen Garcia-Comas Rubio and S. Lan Smith, Kai Wirtz, Sandip Mandal, Hidekatsu Yamazaki


2016.1.8
We held a "Ecosystem Group Seminar".
Speaker: Kazuyuki Miyazaki and Kana Nagashima


2015

December

2015.12.28
We held a "Ecosystem Group Seminar".
Speaker: Koji Sugie and Jonaotaro Onodera


2015.12.15
We held a "Ecosystem Group Guest Seminar".
Speaker: Dr. Ben Ward


November

2015.11.27
We held a "Ecosystem Group Seminar".
Speaker: Yoshikazu Sasai and Naomi Harada GL


2015.11.19
Employment Opportunities


October

2015.10.22
Employment Opportunities


September

2015.9.11
Employment Opportunities


2015.9.7
Employment Opportunities


August

2015.8.28
We held a "Ecosystem Group Guest Seminar".
Speaker: Agostino Merico (Leibniz Center for Tropical Marine Ecology, Bremen, Germany) and Sergio M. Vallina (Institute of Marine Sciences (ICM), Spanish National Research Council (CSIC))


2015.8.21
We held a "Ecosystem Group Seminar" (Speaker: Sanae Chiba and NEOPS Long-term change research team, Taketo Hashioka and NEOPS Long-term change research team).


July

2015.7.24
We held a "Ecosystem Group Seminar" (Speaker: S. Lan Smith and Paulina A. Prondzinsky (visiting as an intern from Jacobs University, Bremen, Germany)).


June

2015.6.26
We held a "Ecosystem Group Seminar" (Speaker: Kana Nagashima and Carmen Garcia-Comas Rubio).


2015.6.2
Figure of our paper was published on the cover of the journal "Paleoceanpgraphy".

Shinya Iwasaki, Katsunori Kimoto, Osamu Sasaki, Harumasa Kano, Makio C. Honda, Yusuke Okazaki Observation of the dissolution process of Globigerina bulloides tests (planktic foraminifera) by X‐ray microcomputed tomography 10 April 2015Vol:30,Pages:317–331DOI:10.1002/2014PA002639


May

2015.5.15
We held a "Ecosystem Group Seminar" (Speaker: Kazuyuki Miyazaki and Koji Sugie).


March

2015.3.19
We held a "Ecosystem Group Seminar" (Speaker: Miyako Sato and Yurikp Nakamura, Tomoko Yoshiki).


2015.3.3
We held a "Ecosystem Group Seminar" (Speaker: Eko Siswanto and Haruka Takagi).


February

2015.2.26
We have published a list of "Tropical Climate Seminar".


2015.2.12
We held a "Ecosystem Group Seminar" (Speaker: Bingzhang Chen and Yoshikazu Sasai).


January

2015.1.26
We held a "Ecosystem Group Seminar" (Speaker: Maki Noguchi Aita and Minoru Kitamura).



2015.1.8
We held a "Ecosystem Group Seminar" (Speaker: Tetsuichi Fujiki and Katsunori Kimoto).


2014

December

2014.12.22
We held a "Ecosystem Group Seminar" (Speaker: Sanae Chiba and Carmen Garcia-Comas Rubio).


2014.12.12
We held a "Ecosystem Group Seminar" (Speaker: Naomi Harada GL and Kana Nagashima).


November

2014.11.25
We held a "Ecosystem Group Seminar" (Speaker: Taketo Hashioka and S. Lan Smith).


2014.11.13
Photograph of a symbiont-bearing planktic foraminifer taken by Haruka Takagi (RCGC Research Student / Waseda Univ.) was selected as the front cover image of the Journal of Plankton Research (Volume 36 Issue 6 November/December 2014).

Journal of Plankton Research Volume 36 Issue 6 November/December 2014
Cover image: Planktic foraminifer
Globigerinoides ruber with symbiotic dinoflagellate Pelagodinium béii, collected at Sagami Bay, Japan. The symbionts are distributed widely along the spines by cytoplasmic flow of the host. Photo by Haruka Takagi. Fujiki et al. J. Plankton Res., 36; pp 1403–1407.

2014.11.13
We held a "Ecosystem Group Seminar" (Speaker: Koji Sugie and Jonaotara Onodera).


2014.11.11
We held a "Ecosystem Group Special Seminar" (Speaker: Markus Pahlow and Kai W. Wirtz).


October

2014.10.23
We held a "Ecosystem Group Seminar" (Speaker: Tetsuichi FUJIKI and Katsunori KIMOTO).


2014.10.2
We held a "Ecosystem Group Seminar" (Speaker: Tomoko Yoshiki and Kazuyuki Miyazaki).


September

2014.9.25
We held a "Ecosystem Group Seminar" (Speaker: Fumihiro ITO and Haruka TAKAGI).


2014.9.8
We held a "Ecosystem Group Seminar" (Speaker: Maki NOGUCHI and Eko SISWANTO).


August

2014.8.29
We have published the new data in the Paleoclimate-Ocean Database!

Related link


2014.8.26
We held a "Ecosystem Group Seminar" (Speaker: Taketo Hashioka and Minoru Kitamura).


2014.8.21
Information of Employment Opportunities


2014.8.21
We held a "Ecosystem Group Seminar" (Speaker: Sergio M. Vallina).



July

2014.7.18
We held a "Ecosystem Group Seminar" (Speaker: Sanae CHIBA and S. Lan SMITH).


2014.7.7
We held a "Ecosystem Group Seminar" (Speaker: Kana NAGASHIMA and Jonaotaro ONODERA).


June

2014.6.23
We held a "Ecosystem Group Seminar".


2014.6.19
We have released a new announcement in the "Ecosystem Group Seminar". We have published the abstract.


2014.6.6
We have published the new data in the Paleoclimate-Ocean Database!

Related link