Grant-in-Aid for Scientific Research -

Global environmental change reconstruction based on coral skeletal records around Japanese Islands

Grant-in-Aid for Scientific Research(B)

Project Year: 2015.04  -  2019.03 

Investigator(s): Suzuki Atsushi, Okai Takashi, Ishimura Toyoho, Nakamura Takashi, Inoue Mayuri, Yamamoto Yuzo, Watanabe Yusuke, Nagao Masayuki 

Direct: 11,400,000 (YEN)  Overheads: 14,820,000 (YEN)  Total: 3,420,000 (YEN)

　View Summary

Global warming causes serious harm to the Earth's environment. A more sophisticated and accurate climate model can be developed by reconstructing climatic change since the Industrial Revolution. Coral skeletons are an important archive of past climate changes, and advances in the ability to read sea surface temperature and salinity in the coral record have been made by applying state-of-the-art technology. Coral skeletal climatology has been successfully applied to characterize both the recent global warming trend in the western Pacific, and it has also been used to investigate biological and environmental issues such as ocean acidification (Kubota et al., 2017). Nevertheless, aspects of coral skeletal climatology still need clarification, including the basic mechanism by which seawater temperature is recorded in coral skeletons, and further research on biomineralization will improve predictions of the future responses of marine calcifying organisms to ocean acidification.

Global environmental change reconstruction based on coral skeletal records around Japanese Islands

Grant-in-Aid for Scientific Research(B)

Project Year: 2015.04  -  2019.03 

Investigator(s): Suzuki Atsushi, Okai Takashi, Ishimura Toyoho, Nakamura Takashi, Inoue Mayuri, Yamamoto Yuzo, Watanabe Yusuke, Nagao Masayuki 

Direct: 11,400,000 (YEN)  Overheads: 14,820,000 (YEN)  Total: 3,420,000 (YEN)

　View Summary

Global warming causes serious harm to the Earth's environment. A more sophisticated and accurate climate model can be developed by reconstructing climatic change since the Industrial Revolution. Coral skeletons are an important archive of past climate changes, and advances in the ability to read sea surface temperature and salinity in the coral record have been made by applying state-of-the-art technology. Coral skeletal climatology has been successfully applied to characterize both the recent global warming trend in the western Pacific, and it has also been used to investigate biological and environmental issues such as ocean acidification (Kubota et al., 2017). Nevertheless, aspects of coral skeletal climatology still need clarification, including the basic mechanism by which seawater temperature is recorded in coral skeletons, and further research on biomineralization will improve predictions of the future responses of marine calcifying organisms to ocean acidification.

Global environmental change reconstruction based on coral skeletal records around Japanese Islands

Grant-in-Aid for Scientific Research(B)

Project Year: 2015.04  -  2019.03 

Investigator(s): Suzuki Atsushi, Okai Takashi, Ishimura Toyoho, Nakamura Takashi, Inoue Mayuri, Yamamoto Yuzo, Watanabe Yusuke, Nagao Masayuki 

Direct: 11,400,000 (YEN)  Overheads: 14,820,000 (YEN)  Total: 3,420,000 (YEN)

　View Summary

Global warming causes serious harm to the Earth's environment. A more sophisticated and accurate climate model can be developed by reconstructing climatic change since the Industrial Revolution. Coral skeletons are an important archive of past climate changes, and advances in the ability to read sea surface temperature and salinity in the coral record have been made by applying state-of-the-art technology. Coral skeletal climatology has been successfully applied to characterize both the recent global warming trend in the western Pacific, and it has also been used to investigate biological and environmental issues such as ocean acidification (Kubota et al., 2017). Nevertheless, aspects of coral skeletal climatology still need clarification, including the basic mechanism by which seawater temperature is recorded in coral skeletons, and further research on biomineralization will improve predictions of the future responses of marine calcifying organisms to ocean acidification.

Global environmental change reconstruction based on coral skeletal records around Japanese Islands

Grant-in-Aid for Scientific Research(B)

Project Year: 2015.04  -  2019.03 

Investigator(s): Suzuki Atsushi, Okai Takashi, Ishimura Toyoho, Nakamura Takashi, Inoue Mayuri, Yamamoto Yuzo, Watanabe Yusuke, Nagao Masayuki 

Direct: 11,400,000 (YEN)  Overheads: 14,820,000 (YEN)  Total: 3,420,000 (YEN)

　View Summary

Global warming causes serious harm to the Earth's environment. A more sophisticated and accurate climate model can be developed by reconstructing climatic change since the Industrial Revolution. Coral skeletons are an important archive of past climate changes, and advances in the ability to read sea surface temperature and salinity in the coral record have been made by applying state-of-the-art technology. Coral skeletal climatology has been successfully applied to characterize both the recent global warming trend in the western Pacific, and it has also been used to investigate biological and environmental issues such as ocean acidification (Kubota et al., 2017). Nevertheless, aspects of coral skeletal climatology still need clarification, including the basic mechanism by which seawater temperature is recorded in coral skeletons, and further research on biomineralization will improve predictions of the future responses of marine calcifying organisms to ocean acidification.

Global environmental change reconstruction based on coral skeletal records around Japanese Islands

Grant-in-Aid for Scientific Research(B)

Project Year: 2015.04  -  2019.03 

Investigator(s): Suzuki Atsushi, Okai Takashi, Ishimura Toyoho, Nakamura Takashi, Inoue Mayuri, Yamamoto Yuzo, Watanabe Yusuke, Nagao Masayuki 

Direct: 11,400,000 (YEN)  Overheads: 14,820,000 (YEN)  Total: 3,420,000 (YEN)

　View Summary

Global warming causes serious harm to the Earth's environment. A more sophisticated and accurate climate model can be developed by reconstructing climatic change since the Industrial Revolution. Coral skeletons are an important archive of past climate changes, and advances in the ability to read sea surface temperature and salinity in the coral record have been made by applying state-of-the-art technology. Coral skeletal climatology has been successfully applied to characterize both the recent global warming trend in the western Pacific, and it has also been used to investigate biological and environmental issues such as ocean acidification (Kubota et al., 2017). Nevertheless, aspects of coral skeletal climatology still need clarification, including the basic mechanism by which seawater temperature is recorded in coral skeletons, and further research on biomineralization will improve predictions of the future responses of marine calcifying organisms to ocean acidification.

Global environmental change reconstruction based on coral skeletal records around Japanese Islands

Grant-in-Aid for Scientific Research(B)

Project Year: 2015.04  -  2019.03 

Investigator(s): Suzuki Atsushi, Okai Takashi, Ishimura Toyoho, Nakamura Takashi, Inoue Mayuri, Yamamoto Yuzo, Watanabe Yusuke, Nagao Masayuki 

Direct: 11,400,000 (YEN)  Overheads: 14,820,000 (YEN)  Total: 3,420,000 (YEN)

　View Summary

Global warming causes serious harm to the Earth's environment. A more sophisticated and accurate climate model can be developed by reconstructing climatic change since the Industrial Revolution. Coral skeletons are an important archive of past climate changes, and advances in the ability to read sea surface temperature and salinity in the coral record have been made by applying state-of-the-art technology. Coral skeletal climatology has been successfully applied to characterize both the recent global warming trend in the western Pacific, and it has also been used to investigate biological and environmental issues such as ocean acidification (Kubota et al., 2017). Nevertheless, aspects of coral skeletal climatology still need clarification, including the basic mechanism by which seawater temperature is recorded in coral skeletons, and further research on biomineralization will improve predictions of the future responses of marine calcifying organisms to ocean acidification.

Grant-in-Aid for Scientific Research(B)

Project Year: 2014.04  -  2017.03 

The Design of Marine Protected Areas for Conserving Coral Reef: Co-management by Local Resident and the Role of Public Sector

Grant-in-Aid for Scientific Research(B)

Project Year: 2014.04  -  2017.03 

Investigator(s): Shinbo Teruyuki, MOROOKA Yoshinori, BALLAD Emma, BRADECINA Raul, NIEVES Plutomeo 

Direct: 12,900,000 (YEN)  Overheads: 16,770,000 (YEN)  Total: 3,870,000 (YEN)

　View Summary

Degradation problem of coral reef in Yoron Is.: We found inside reef coral cover is very poor but outside higher. It suggest nutrient from land affect coral community. We found high density nutrient in sump water adsorbed phosphate in sand at sea bottom. We established numerical simulation system of material circulation in the island including coastal water body make it possible to assess the influence of countermeasure in land to sea. Diffusion activities of efficient fertilization method for sugar cane farming to cut down outflow of chemical fertilizer to environment. Philippines: We conducted the case study of 4MPA in Cagayan and clarified current status of MPA management and participation of community residents and evaluate the economic value of MPA management by community by CVM, TCAM and CB. Japan: We analyzed policy instruments to conserve coral and necessary regulations against each deterioration factors, especially overuse, and point necessity of integrated coastal management.

The Design of Marine Protected Areas for Conserving Coral Reef: Co-management by Local Resident and the Role of Public Sector

Grant-in-Aid for Scientific Research(B)

Project Year: 2014.04  -  2017.03 

Investigator(s): Shinbo Teruyuki, MOROOKA Yoshinori, BALLAD Emma, BRADECINA Raul, NIEVES Plutomeo 

Direct: 12,900,000 (YEN)  Overheads: 16,770,000 (YEN)  Total: 3,870,000 (YEN)

　View Summary

Degradation problem of coral reef in Yoron Is.: We found inside reef coral cover is very poor but outside higher. It suggest nutrient from land affect coral community. We found high density nutrient in sump water adsorbed phosphate in sand at sea bottom. We established numerical simulation system of material circulation in the island including coastal water body make it possible to assess the influence of countermeasure in land to sea. Diffusion activities of efficient fertilization method for sugar cane farming to cut down outflow of chemical fertilizer to environment. Philippines: We conducted the case study of 4MPA in Cagayan and clarified current status of MPA management and participation of community residents and evaluate the economic value of MPA management by community by CVM, TCAM and CB. Japan: We analyzed policy instruments to conserve coral and necessary regulations against each deterioration factors, especially overuse, and point necessity of integrated coastal management.

The Design of Marine Protected Areas for Conserving Coral Reef: Co-management by Local Resident and the Role of Public Sector

Grant-in-Aid for Scientific Research(B)

Project Year: 2014.04  -  2017.03 

Investigator(s): Shinbo Teruyuki, MOROOKA Yoshinori, BALLAD Emma, BRADECINA Raul, NIEVES Plutomeo 

Direct: 12,900,000 (YEN)  Overheads: 16,770,000 (YEN)  Total: 3,870,000 (YEN)

　View Summary

Degradation problem of coral reef in Yoron Is.: We found inside reef coral cover is very poor but outside higher. It suggest nutrient from land affect coral community. We found high density nutrient in sump water adsorbed phosphate in sand at sea bottom. We established numerical simulation system of material circulation in the island including coastal water body make it possible to assess the influence of countermeasure in land to sea. Diffusion activities of efficient fertilization method for sugar cane farming to cut down outflow of chemical fertilizer to environment. Philippines: We conducted the case study of 4MPA in Cagayan and clarified current status of MPA management and participation of community residents and evaluate the economic value of MPA management by community by CVM, TCAM and CB. Japan: We analyzed policy instruments to conserve coral and necessary regulations against each deterioration factors, especially overuse, and point necessity of integrated coastal management.

The Design of Marine Protected Areas for Conserving Coral Reef: Co-management by Local Resident and the Role of Public Sector

Grant-in-Aid for Scientific Research(B)

Project Year: 2014.04  -  2017.03 

Investigator(s): Shinbo Teruyuki, MOROOKA Yoshinori, BALLAD Emma, BRADECINA Raul, NIEVES Plutomeo 

Direct: 12,900,000 (YEN)  Overheads: 16,770,000 (YEN)  Total: 3,870,000 (YEN)

　View Summary

Degradation problem of coral reef in Yoron Is.: We found inside reef coral cover is very poor but outside higher. It suggest nutrient from land affect coral community. We found high density nutrient in sump water adsorbed phosphate in sand at sea bottom. We established numerical simulation system of material circulation in the island including coastal water body make it possible to assess the influence of countermeasure in land to sea. Diffusion activities of efficient fertilization method for sugar cane farming to cut down outflow of chemical fertilizer to environment. Philippines: We conducted the case study of 4MPA in Cagayan and clarified current status of MPA management and participation of community residents and evaluate the economic value of MPA management by community by CVM, TCAM and CB. Japan: We analyzed policy instruments to conserve coral and necessary regulations against each deterioration factors, especially overuse, and point necessity of integrated coastal management.

The Design of Marine Protected Areas for Conserving Coral Reef: Co-management by Local Resident and the Role of Public Sector

Grant-in-Aid for Scientific Research(B)

Project Year: 2014.04  -  2017.03 

Investigator(s): Shinbo Teruyuki, MOROOKA Yoshinori, BALLAD Emma, BRADECINA Raul, NIEVES Plutomeo 

Direct: 12,900,000 (YEN)  Overheads: 16,770,000 (YEN)  Total: 3,870,000 (YEN)

　View Summary

Degradation problem of coral reef in Yoron Is.: We found inside reef coral cover is very poor but outside higher. It suggest nutrient from land affect coral community. We found high density nutrient in sump water adsorbed phosphate in sand at sea bottom. We established numerical simulation system of material circulation in the island including coastal water body make it possible to assess the influence of countermeasure in land to sea. Diffusion activities of efficient fertilization method for sugar cane farming to cut down outflow of chemical fertilizer to environment. Philippines: We conducted the case study of 4MPA in Cagayan and clarified current status of MPA management and participation of community residents and evaluate the economic value of MPA management by community by CVM, TCAM and CB. Japan: We analyzed policy instruments to conserve coral and necessary regulations against each deterioration factors, especially overuse, and point necessity of integrated coastal management.

Grant-in-Aid for Young Scientists(B)

Project Year: 2012.04  -  2015.03 

Direct: 3,700,000 (YEN)  Overheads: 1,110,000 (YEN)  Total: 4,810,000 (YEN)

Grant-in-Aid for Scientific Research(A)

Project Year: 2012.04  -  2015.03 

Physio-Ecological study on Scleractinian corals' metabolic adjustability to dynamic environmental changes

Grant-in-Aid for Young Scientists(B)

Project Year: 2012.04  -  2015.03 

Investigator(s): NAKAMURA Takashi 

Direct: 3,700,000 (YEN)  Overheads: 4,810,000 (YEN)  Total: 1,110,000 (YEN)

　View Summary

Ctenactis echinata, as the rare case of "individual" scleractinian coral species, has been selected to explore the potential margin among thermal-stress responses within a population. The greater thermal sensitivities among sexually maturating individuals suggested the trade-off between maintainance and sexual reproduction in this species while stable tolerance were found among larger (older) individuals. In addition, expreiments focused on various life stages of Acropora digitifera such as; planktonic larvae, primarly polyps and mature colonies by cold-water stresses had been conducted. According to the results, niether planktonic larvae and mature colonies were not critically affected by cold stress however, primary polyps' calcification as well as budding rates were significantly suppressed. These results strongly suggest this species ability to survive under marginal region (temperate watar)envrionments is limited by the initial growth suppression.

Physio-Ecological study on Scleractinian corals' metabolic adjustability to dynamic environmental changes

Grant-in-Aid for Young Scientists(B)

Project Year: 2012.04  -  2015.03 

Investigator(s): NAKAMURA Takashi 

Direct: 3,700,000 (YEN)  Overheads: 4,810,000 (YEN)  Total: 1,110,000 (YEN)

　View Summary

Ctenactis echinata, as the rare case of "individual" scleractinian coral species, has been selected to explore the potential margin among thermal-stress responses within a population. The greater thermal sensitivities among sexually maturating individuals suggested the trade-off between maintainance and sexual reproduction in this species while stable tolerance were found among larger (older) individuals. In addition, expreiments focused on various life stages of Acropora digitifera such as; planktonic larvae, primarly polyps and mature colonies by cold-water stresses had been conducted. According to the results, niether planktonic larvae and mature colonies were not critically affected by cold stress however, primary polyps' calcification as well as budding rates were significantly suppressed. These results strongly suggest this species ability to survive under marginal region (temperate watar)envrionments is limited by the initial growth suppression.

Inter- and intracolony variability of coral climate proxies and implication for coral climatology

Grant-in-Aid for Scientific Research(A)

Project Year: 2012.04  -  2015.03 

Investigator(s): SUZUKI Atsushi, SAKAI Kazuhiko, NAKAMURA Takashi, OKAI Takashi, KATO Aki, ZHANG Jing, NAKASHIMA Rei, ISONO Ryosuke, KIKKAWA Takashi, IGUCHI Akira, INOUE Mayuri, MURAYAMA Shohei, HAYASHI Masahiro 

Direct: 37,400,000 (YEN)  Overheads: 48,620,000 (YEN)  Total: 11,220,000 (YEN)

　View Summary

As application of coral-based climate reconstruction has become more frequent at tropical sites, increased attention is being paid to the potential ambiguities of coral thermometers that are intrinsic to the biomineralisation process. Here we studied how the growth rate influenced the skeletal oxygen and carbon isotope ratios and the Sr/Ca ratio in a common-garden experiment involving the long-term culture of Porites australiensis clone colonies. The Sr/Ca ratio was robust against both inter- and intracolony growth-rate variation. The seasonal fluctuation in carbon isotope ratios corresponded to photosynthetic efficiency as measured by pulse-amplitude photometry. These findings support the inference that coral skeletal Sr/Ca and oxygen isotope ratios in a long-lived colony can function as a palaeoclimate archive by recording signals of clonal growth. We also propose practical guidelines for the proper interpretation of coral records.

Physio-Ecological study on Scleractinian corals' metabolic adjustability to dynamic environmental changes

Grant-in-Aid for Young Scientists(B)

Project Year: 2012.04  -  2015.03 

Investigator(s): NAKAMURA Takashi 

Direct: 3,700,000 (YEN)  Overheads: 4,810,000 (YEN)  Total: 1,110,000 (YEN)

　View Summary

Ctenactis echinata, as the rare case of "individual" scleractinian coral species, has been selected to explore the potential margin among thermal-stress responses within a population. The greater thermal sensitivities among sexually maturating individuals suggested the trade-off between maintainance and sexual reproduction in this species while stable tolerance were found among larger (older) individuals. In addition, expreiments focused on various life stages of Acropora digitifera such as; planktonic larvae, primarly polyps and mature colonies by cold-water stresses had been conducted. According to the results, niether planktonic larvae and mature colonies were not critically affected by cold stress however, primary polyps' calcification as well as budding rates were significantly suppressed. These results strongly suggest this species ability to survive under marginal region (temperate watar)envrionments is limited by the initial growth suppression.

Physio-Ecological study on Scleractinian corals' metabolic adjustability to dynamic environmental changes

Grant-in-Aid for Young Scientists(B)

Project Year: 2012.04  -  2015.03 

Investigator(s): NAKAMURA Takashi 

Direct: 3,700,000 (YEN)  Overheads: 4,810,000 (YEN)  Total: 1,110,000 (YEN)

　View Summary

Ctenactis echinata, as the rare case of "individual" scleractinian coral species, has been selected to explore the potential margin among thermal-stress responses within a population. The greater thermal sensitivities among sexually maturating individuals suggested the trade-off between maintainance and sexual reproduction in this species while stable tolerance were found among larger (older) individuals. In addition, expreiments focused on various life stages of Acropora digitifera such as; planktonic larvae, primarly polyps and mature colonies by cold-water stresses had been conducted. According to the results, niether planktonic larvae and mature colonies were not critically affected by cold stress however, primary polyps' calcification as well as budding rates were significantly suppressed. These results strongly suggest this species ability to survive under marginal region (temperate watar)envrionments is limited by the initial growth suppression.

Physio-Ecological study on Scleractinian corals' metabolic adjustability to dynamic environmental changes

Grant-in-Aid for Young Scientists(B)

Project Year: 2012.04  -  2015.03 

Investigator(s): NAKAMURA Takashi 

Direct: 3,700,000 (YEN)  Overheads: 4,810,000 (YEN)  Total: 1,110,000 (YEN)

　View Summary

Ctenactis echinata, as the rare case of "individual" scleractinian coral species, has been selected to explore the potential margin among thermal-stress responses within a population. The greater thermal sensitivities among sexually maturating individuals suggested the trade-off between maintainance and sexual reproduction in this species while stable tolerance were found among larger (older) individuals. In addition, expreiments focused on various life stages of Acropora digitifera such as; planktonic larvae, primarly polyps and mature colonies by cold-water stresses had been conducted. According to the results, niether planktonic larvae and mature colonies were not critically affected by cold stress however, primary polyps' calcification as well as budding rates were significantly suppressed. These results strongly suggest this species ability to survive under marginal region (temperate watar)envrionments is limited by the initial growth suppression.