var bibbase_data = {"data":"\"Loading..\"\n\n
\n\n \n\n \n\n \n \n\n \n\n \n \n\n \n\n \n
\n generated by\n \n \"bibbase.org\"\n\n \n
\n \n\n
\n\n \n\n\n
\n\n Excellent! Next you can\n create a new website with this list, or\n embed it in an existing web page by copying & pasting\n any of the following snippets.\n\n
\n JavaScript\n (easiest)\n
\n \n <script src=\"https://bibbase.org/show?bib=https%3A%2F%2Fapi.zotero.org%2Fusers%2F982640%2Fcollections%2FKIHV6E83%2Fitems%3Fkey%3Dz4qoDB6Q7BNQ883d80FXR5as%26format%3Dbibtex%26limit%3D100&jsonp=1&jsonp=1\"></script>\n \n
\n\n PHP\n
\n \n <?php\n $contents = file_get_contents(\"https://bibbase.org/show?bib=https%3A%2F%2Fapi.zotero.org%2Fusers%2F982640%2Fcollections%2FKIHV6E83%2Fitems%3Fkey%3Dz4qoDB6Q7BNQ883d80FXR5as%26format%3Dbibtex%26limit%3D100&jsonp=1\");\n print_r($contents);\n ?>\n \n
\n\n iFrame\n (not recommended)\n
\n \n <iframe src=\"https://bibbase.org/show?bib=https%3A%2F%2Fapi.zotero.org%2Fusers%2F982640%2Fcollections%2FKIHV6E83%2Fitems%3Fkey%3Dz4qoDB6Q7BNQ883d80FXR5as%26format%3Dbibtex%26limit%3D100&jsonp=1\"></iframe>\n \n
\n\n

\n For more details see the documention.\n

\n
\n
\n\n
\n\n This is a preview! To use this list on your own web site\n or create a new web site from it,\n create a free account. The file will be added\n and you will be able to edit it in the File Manager.\n We will show you instructions once you've created your account.\n
\n\n
\n\n

To the site owner:

\n\n

Action required! Mendeley is changing its\n API. In order to keep using Mendeley with BibBase past April\n 14th, you need to:\n

    \n
  1. renew the authorization for BibBase on Mendeley, and
  2. \n
  3. update the BibBase URL\n in your page the same way you did when you initially set up\n this page.\n
  4. \n
\n

\n\n

\n \n \n Fix it now\n

\n
\n\n
\n\n\n
\n \n \n
\n
\n  \n 2023\n \n \n (4)\n \n \n
\n
\n \n \n
\n \n\n \n \n \n \n \n \n Using morphological annotations for genetic lineage prediction of two reef building coral species.\n \n \n \n \n\n\n \n Guinther Mitusashi; Yuko F. Kitano; Eric Armstrong; Barbara Porro; Emilie Boissin; Quentin Carradec; Eric Rottinger; Serge Planes; David A. Paz-Garcia; Christian R Voolstra; Didier Forcioli; and Sylvain Agostini\n\n\n \n\n\n\n November 2023.\n \n\n\n\n
\n\n\n\n \n \n \"UsingPaper\n  \n \n\n \n\n \n link\n  \n \n\n bibtex\n \n\n \n\n \n\n \n \n \n \n \n \n \n\n  \n \n \n\n\n\n
\n
@misc{guinther_mitusashi_using_2023,\n\taddress = {Sendai, Japan},\n\ttype = {Oral},\n\ttitle = {Using morphological annotations for genetic lineage prediction of two reef building coral species},\n\turl = {https://www.jcrs.jp/?page_id=2849},\n\tlanguage = {English},\n\turldate = {2024-02-21},\n\tauthor = {{Guinther Mitusashi} and {Yuko F. Kitano} and {Eric Armstrong} and {Barbara Porro} and {Emilie Boissin} and {Quentin Carradec} and {Eric Rottinger} and {Serge Planes} and {David A. Paz-Garcia} and {Christian R Voolstra} and {Didier Forcioli} and {Sylvain Agostini}},\n\tmonth = nov,\n\tyear = {2023},\n}\n\n
\n
\n\n\n\n
\n\n\n
\n \n\n \n \n \n \n \n \n Coral skeleton dissolution is accelerated by turf algal settlement under ocean acidification.\n \n \n \n \n\n\n \n Joshua Heitzman; Guinther Hiromu Mitushasi; Davide Spatafora; Shigeki Wada; Ben P. Harvey; Haruko Kurihara; and Sylvain Agostini\n\n\n \n\n\n\n November 2023.\n \n\n\n\n
\n\n\n\n \n \n \"CoralPaper\n  \n \n\n \n\n \n link\n  \n \n\n bibtex\n \n\n \n\n \n\n \n \n \n \n \n \n \n\n  \n \n \n\n\n\n
\n
@misc{joshua_heitzman_coral_2023,\n\taddress = {Sendai, Japan},\n\ttype = {Oral},\n\ttitle = {Coral skeleton dissolution is accelerated by turf algal settlement under ocean acidification},\n\turl = {https://www.jcrs.jp/?page_id=2849},\n\tlanguage = {English},\n\turldate = {2024-02-21},\n\tauthor = {{Joshua Heitzman} and {Guinther Hiromu Mitushasi} and {Davide Spatafora} and {Shigeki Wada} and {Ben P. Harvey} and {Haruko Kurihara} and {Sylvain Agostini}},\n\tmonth = nov,\n\tyear = {2023},\n}\n\n
\n
\n\n\n\n
\n\n\n
\n \n\n \n \n \n \n \n \n Diurnal cycle of hermatypic coral gross photosynthesis and photo inhibition under thermal stress.\n \n \n \n \n\n\n \n A. Hirata; R. Terayama; T. Higuchi; I. Yuyama; T. Nakamura; H. Fujimura; and S. Agostini\n\n\n \n\n\n\n November 2023.\n \n\n\n\n
\n\n\n\n \n \n \"DiurnalPaper\n  \n \n\n \n\n \n link\n  \n \n\n bibtex\n \n\n \n\n \n\n \n \n \n \n \n \n \n\n  \n \n \n\n\n\n
\n
@misc{a_hirata_diurnal_2023,\n\taddress = {Sendai, Japan},\n\ttype = {Oral},\n\ttitle = {Diurnal cycle of hermatypic coral gross photosynthesis and photo inhibition under thermal stress},\n\turl = {https://www.jcrs.jp/?page_id=2849},\n\tlanguage = {English},\n\turldate = {2024-02-21},\n\tauthor = {{A. Hirata} and {R. Terayama} and {T. Higuchi} and {I. Yuyama} and {T. Nakamura} and {H. Fujimura} and {S. Agostini}},\n\tmonth = nov,\n\tyear = {2023},\n}\n\n
\n
\n\n\n\n
\n\n\n
\n \n\n \n \n \n \n \n \n Using natural analogues for the study of ecosystems effects of Ocean Acidification: the Shikine CO2 seep and the ICONA network.\n \n \n \n \n\n\n \n Sylvain Agostini; Ben P. Harvey; Lucia Porzio; Jason M. Hall-Spencer; Carlo Cattano; Fanny Houlbrèque; Timothy Ravasi; Haruko Kurihara; Bayden D. Russel; James D. Reimer; ICONA participants; Marco Milazzo; Riccardo Rodolfo-Metalapa; and Shigeki Wada\n\n\n \n\n\n\n June 2023.\n \n\n\n\n
\n\n\n\n \n \n \"UsingPaper\n  \n \n\n \n\n \n link\n  \n \n\n bibtex\n \n\n \n  \n \n abstract \n \n\n \n\n \n \n \n \n \n \n \n\n  \n \n \n\n\n\n
\n
@misc{sylvain_agostini_using_2023,\n\taddress = {Singapore},\n\ttype = {Oral},\n\ttitle = {Using natural analogues for the study of ecosystems effects of {Ocean} {Acidification}: the {Shikine} {CO2} seep and the {ICONA} network.},\n\turl = {https://www.apcrs2023.org/},\n\tabstract = {Increasing atmospheric CO2 concentration is driving the rapid acidification of the ocean. This will certainly lead to severe consequences to the marine environment. Although laboratory experiments show that future CO2 and temperature levels can affect a variety of physiological and behavioral traits and processes of coral reef organisms, the ecosystemic effects remain uncertain and with considerable variation among species. The Shikine CO2 seep was described in 2015 and shown to be suitable for the study of ocean acidification. Since then more than 20 papers have been published, showing a wide range of physiological and ecological effects of ocean acidification. Here we will focus on the effects on scleractinian corals. By studying the resistant species and individuals found in the high CO2 areas, we hope to understand the eco-physiological traits and adaptation mechanisms that will shape future coral communities around the world. \nNatural analogues of a high CO2 world such as volcanic CO2 vents, like in Shikine Island, and enclosed bays provide a unique opportunity to investigate the fundamental responses and potential adaptation of marine organisms to long-term exposure to elevated CO2, temperature, salinity and hypoxia. The International CO2 Natural Analogues (ICONA) network was created to foster the use of natural analogues, harmonize the techniques employed and enhance exchanges and collaboration. The network is now working closely with OARS, a UN ocean decade program.},\n\tlanguage = {English},\n\turldate = {2024-01-09},\n\tauthor = {{Sylvain Agostini} and {Ben P. Harvey} and {Lucia Porzio} and {Jason M. Hall-Spencer} and {Carlo Cattano} and {Fanny Houlbrèque} and {Timothy Ravasi} and {Haruko Kurihara} and {Bayden D. Russel} and {James D. Reimer} and {ICONA participants} and {Marco Milazzo} and {Riccardo Rodolfo-Metalapa} and {Shigeki Wada}},\n\tmonth = jun,\n\tyear = {2023},\n}\n\n
\n
\n\n\n
\n Increasing atmospheric CO2 concentration is driving the rapid acidification of the ocean. This will certainly lead to severe consequences to the marine environment. Although laboratory experiments show that future CO2 and temperature levels can affect a variety of physiological and behavioral traits and processes of coral reef organisms, the ecosystemic effects remain uncertain and with considerable variation among species. The Shikine CO2 seep was described in 2015 and shown to be suitable for the study of ocean acidification. Since then more than 20 papers have been published, showing a wide range of physiological and ecological effects of ocean acidification. Here we will focus on the effects on scleractinian corals. By studying the resistant species and individuals found in the high CO2 areas, we hope to understand the eco-physiological traits and adaptation mechanisms that will shape future coral communities around the world. Natural analogues of a high CO2 world such as volcanic CO2 vents, like in Shikine Island, and enclosed bays provide a unique opportunity to investigate the fundamental responses and potential adaptation of marine organisms to long-term exposure to elevated CO2, temperature, salinity and hypoxia. The International CO2 Natural Analogues (ICONA) network was created to foster the use of natural analogues, harmonize the techniques employed and enhance exchanges and collaboration. The network is now working closely with OARS, a UN ocean decade program.\n
\n\n\n
\n\n\n\n\n\n
\n
\n\n
\n
\n  \n 2022\n \n \n (5)\n \n \n
\n
\n \n \n
\n \n\n \n \n \n \n \n \n Coral-algae interactions under ocean acidification.\n \n \n \n \n\n\n \n Joshua M. Heitzman; Hirata, A.; Mitushasi, Guinther; and Agostini, Sylvain\n\n\n \n\n\n\n September 2022.\n \n\n\n\n
\n\n\n\n \n \n \"Coral-algaePaper\n  \n \n\n \n\n \n link\n  \n \n\n bibtex\n \n\n \n\n \n\n \n \n \n \n \n \n \n\n  \n \n \n\n\n\n
\n
@misc{joshua_m_heitzman_coral-algae_2022,\n\taddress = {Lima, Peru},\n\ttype = {Oral},\n\ttitle = {Coral-algae interactions under ocean acidification},\n\turl = {https://www.highco2-lima.org/},\n\tlanguage = {English},\n\tauthor = {{Joshua M. Heitzman} and {Hirata, A.} and {Mitushasi, Guinther} and {Agostini, Sylvain}},\n\tmonth = sep,\n\tyear = {2022},\n}\n\n
\n
\n\n\n\n
\n\n\n
\n \n\n \n \n \n \n \n Skeleton morphometric analysis of reef-building corals for taxonomic identification and genotype prediction.\n \n \n \n\n\n \n Guinther Mitusashi; Yuko F. Kitano; Hume Benjamin C. C; Armstrong, Eric; Barbara Porro; Emilie Boissin; Julie Poulain; Quentin Carradec; David A. Paz-Garcia; Dider Zoccola; Eric Rottinger; Clementine Moulin; Gillaume Iwankow; Sarah Romac; Tara Pacific Consortium; Serge Planes; Denis Allemand; Christian R Voolstra; Didier Forcioli; and Sylvain Agostini\n\n\n \n\n\n\n July 2022.\n \n\n\n\n
\n\n\n\n \n\n \n\n \n link\n  \n \n\n bibtex\n \n\n \n\n \n\n \n \n \n \n \n \n \n\n  \n \n \n\n\n\n
\n
@misc{guinther_mitusashi_skeleton_2022,\n\taddress = {online},\n\ttype = {Oral},\n\ttitle = {Skeleton morphometric analysis of reef-building corals for taxonomic identification and genotype prediction},\n\tlanguage = {English},\n\tauthor = {{Guinther Mitusashi} and {Yuko F. Kitano} and {Hume Benjamin C. C} and {Armstrong, Eric} and {Barbara Porro} and {Emilie Boissin} and {Julie Poulain} and {Quentin Carradec} and {David A. Paz-Garcia} and {Dider Zoccola} and {Eric Rottinger} and {Clementine Moulin} and {Gillaume Iwankow} and {Sarah Romac} and {Tara Pacific Consortium} and {Serge Planes} and {Denis Allemand} and {Christian R Voolstra} and {Didier Forcioli} and {Sylvain Agostini}},\n\tmonth = jul,\n\tyear = {2022},\n}\n\n
\n
\n\n\n\n
\n\n\n
\n \n\n \n \n \n \n \n Prediction of genetic lineages using coral colony morphology.\n \n \n \n\n\n \n Guinther Mitusashi; Yuko F. Kitano; Hume Benjamin C. C; Armstrong, Eric; Barbara Porro; Emilie Boissin; Julie Poulain; Quentin Carradec; David A. Paz-Garcia; Dider Zoccola; Eric Rottinger; Clementine Moulin; Gillaume Iwankow; Sarah Romac; Tara Pacific Consortium; Serge Planes; Denis Allemand; Christian R Voolstra; Didier Forcioli; and Sylvain Agostini\n\n\n \n\n\n\n May 2022.\n \n\n\n\n
\n\n\n\n \n\n \n\n \n link\n  \n \n\n bibtex\n \n\n \n\n \n\n \n \n \n \n \n \n \n\n  \n \n \n\n\n\n
\n
@misc{guinther_mitusashi_prediction_2022,\n\taddress = {online},\n\ttype = {Oral},\n\ttitle = {Prediction of genetic lineages using coral colony morphology.},\n\tlanguage = {English},\n\tauthor = {{Guinther Mitusashi} and {Yuko F. Kitano} and {Hume Benjamin C. C} and {Armstrong, Eric} and {Barbara Porro} and {Emilie Boissin} and {Julie Poulain} and {Quentin Carradec} and {David A. Paz-Garcia} and {Dider Zoccola} and {Eric Rottinger} and {Clementine Moulin} and {Gillaume Iwankow} and {Sarah Romac} and {Tara Pacific Consortium} and {Serge Planes} and {Denis Allemand} and {Christian R Voolstra} and {Didier Forcioli} and {Sylvain Agostini}},\n\tmonth = may,\n\tyear = {2022},\n}\n\n
\n
\n\n\n\n
\n\n\n
\n \n\n \n \n \n \n \n \n TARA-JAMBIO Joint Microplastic Survey: Distribution, Flux and Plastisphere of Microplastics in Japanese Coastal Areas.\n \n \n \n \n\n\n \n Ramtahal, J.; Sugimoto, K.; Consortium, T. J.; Patouillet, Y.; and Agostini, S.\n\n\n \n\n\n\n May 2022.\n \n\n\n\n
\n\n\n\n \n \n \"TARA-JAMBIOPaper\n  \n \n\n \n\n \n link\n  \n \n\n bibtex\n \n\n \n  \n \n abstract \n \n\n \n\n \n \n \n \n \n \n \n\n  \n \n \n\n\n\n
\n
@misc{ramtahal_tara-jambio_2022,\n\taddress = {Makuhari Messe, Chiba, Japan},\n\ttype = {Oral},\n\ttitle = {{TARA}-{JAMBIO} {Joint} {Microplastic} {Survey}: {Distribution}, {Flux} and {Plastisphere} of {Microplastics} in {Japanese} {Coastal} {Areas}.},\n\turl = {https://confit.atlas.jp/guide/event/jpgu2022/subject/MIS19-05/advanced},\n\tabstract = {Tara Océan Fondation (https://fondationtaraocean.org) is dedicated to the Ocean through collaborative scientific expeditions, raising public awareness, mobilizing policy makers and stakeholders at the highest levels, and providing global access to the latest scientific knowledge concerning our Ocean. Since 2020, TARA-JAMBIO Joint Microplastic Survey is a combined effort of Tara Ocean Foundation and Japanese Association for Marine Biology to investigate the status of microplastic pollution in coastal areas throughout Japan. Microplastics cannot be fully retrieved from the ocean, due to the small size of particles and may cause damage to marine ecosystems and organisms. The synthetic nature of microplastics contribute to their slow rate of degradation, low rate of mineralization, and long-term persistence in the marine environment. However, there is a lack of scientific knowledge on the sources, fluxes, and distribution of microplastic in the marine matrices. As such, the Joint Microplastic Survey has two aims, the first is to assess microplastic pollution in surface water and sediment of Japanese coasts, the fluxes of microplastic from rivers and bays and to characterize the bacterial communities on plastic fragments (termed ‘the Plastiphere’). Secondly the project aims to raise awareness of plastic pollution and encourage a reduction in the use of plastics, and to inform on threats to the ocean caused by anthropogenic activity. Sampling was conducted at 10 marine stations belonging to the JAMBIO network in West and North Japan (https://www.jambio.org). A Neuston net was used to sample surface waters, while a Smith McIntyre Grab was used for sediment collection. Microplastics (300-5000 µm) were extracted using density separation (NaCl) followed by wet peroxide oxidation (H2O2) and sorted using UV-microscopy. Samples collected for the ‘plastisphere’ study were collected under microscope immediately after each sampling event and processed for DNA extraction using DNeasy PowerSoil® Pro Kit, Qiagen® and downstream analysis. To assess the horizontal fluxes, sampling was conducted at a river mouth, within a bay and outside a bay at each marine station. To date, plastic fragments were found in all surface water and sediment samples that have been processed. The high concentrations recorded in some samples confirmed the prevalence and omnipresence of microplastics in Japanese waters but also highlights the large temporal and spatial variations in concentration. Community-based outreach and collaboration with local artists was implemented to facilitate public awareness and engagement during this project. At each location local artist joined the sampling and produced a piece of art that will be publicly displayed at the Setouchi Triennale 2022. Interactive events were held for the local communities, which included beach cleaning, and educational talks about plastic pollution and everyday solutions to reduce plastic use.},\n\tauthor = {Ramtahal, Jonathan and Sugimoto, Kugako and Tara Jambio Consortium and Patouillet, Yumiko and Agostini, Sylvain},\n\tmonth = may,\n\tyear = {2022},\n}\n\n
\n
\n\n\n
\n Tara Océan Fondation (https://fondationtaraocean.org) is dedicated to the Ocean through collaborative scientific expeditions, raising public awareness, mobilizing policy makers and stakeholders at the highest levels, and providing global access to the latest scientific knowledge concerning our Ocean. Since 2020, TARA-JAMBIO Joint Microplastic Survey is a combined effort of Tara Ocean Foundation and Japanese Association for Marine Biology to investigate the status of microplastic pollution in coastal areas throughout Japan. Microplastics cannot be fully retrieved from the ocean, due to the small size of particles and may cause damage to marine ecosystems and organisms. The synthetic nature of microplastics contribute to their slow rate of degradation, low rate of mineralization, and long-term persistence in the marine environment. However, there is a lack of scientific knowledge on the sources, fluxes, and distribution of microplastic in the marine matrices. As such, the Joint Microplastic Survey has two aims, the first is to assess microplastic pollution in surface water and sediment of Japanese coasts, the fluxes of microplastic from rivers and bays and to characterize the bacterial communities on plastic fragments (termed ‘the Plastiphere’). Secondly the project aims to raise awareness of plastic pollution and encourage a reduction in the use of plastics, and to inform on threats to the ocean caused by anthropogenic activity. Sampling was conducted at 10 marine stations belonging to the JAMBIO network in West and North Japan (https://www.jambio.org). A Neuston net was used to sample surface waters, while a Smith McIntyre Grab was used for sediment collection. Microplastics (300-5000 µm) were extracted using density separation (NaCl) followed by wet peroxide oxidation (H2O2) and sorted using UV-microscopy. Samples collected for the ‘plastisphere’ study were collected under microscope immediately after each sampling event and processed for DNA extraction using DNeasy PowerSoil® Pro Kit, Qiagen® and downstream analysis. To assess the horizontal fluxes, sampling was conducted at a river mouth, within a bay and outside a bay at each marine station. To date, plastic fragments were found in all surface water and sediment samples that have been processed. The high concentrations recorded in some samples confirmed the prevalence and omnipresence of microplastics in Japanese waters but also highlights the large temporal and spatial variations in concentration. Community-based outreach and collaboration with local artists was implemented to facilitate public awareness and engagement during this project. At each location local artist joined the sampling and produced a piece of art that will be publicly displayed at the Setouchi Triennale 2022. Interactive events were held for the local communities, which included beach cleaning, and educational talks about plastic pollution and everyday solutions to reduce plastic use.\n
\n\n\n
\n\n\n
\n \n\n \n \n \n \n \n \n What we learn from the Shikine CO2 seep on the effects of high CO2 on hermatypic corals.\n \n \n \n \n\n\n \n Sylvain Agostini; Ben P. Harvey; Shigeki Wada; Koetsu Kon; Joshua M. Heitzman; Nicolas Floc'h; Marco Milazzo; Carlo Cattano; Fanny Houlbrèque; Tom Biscéré; Riccardo Rodolfo-Metalpa; and Jason M. Hall-Spencer\n\n\n \n\n\n\n September 2022.\n \n\n\n\n
\n\n\n\n \n \n \"WhatPaper\n  \n \n\n \n\n \n link\n  \n \n\n bibtex\n \n\n \n\n \n\n \n \n \n \n \n \n \n\n  \n \n \n\n\n\n
\n
@misc{sylvain_agostini_what_2022,\n\taddress = {Lima, Peru},\n\ttype = {Oral},\n\ttitle = {What we learn from the {Shikine} {CO2} seep on the effects of high {CO2} on hermatypic corals},\n\turl = {https://www.highco2-lima.org/},\n\tlanguage = {English},\n\tauthor = {{Sylvain Agostini} and {Ben P. Harvey} and {Shigeki Wada} and {Koetsu Kon} and {Joshua M. Heitzman} and {Nicolas Floc'h} and {Marco Milazzo} and {Carlo Cattano} and {Fanny Houlbrèque} and {Tom Biscéré} and {Riccardo Rodolfo-Metalpa} and {Jason M. Hall-Spencer}},\n\tmonth = sep,\n\tyear = {2022},\n}\n\n
\n
\n\n\n\n
\n\n\n\n\n\n
\n
\n\n
\n
\n  \n 2021\n \n \n (8)\n \n \n
\n
\n \n \n
\n \n\n \n \n \n \n \n \n Recurrent disease outbreak in a warm temperate marginal coral community.\n \n \n \n \n\n\n \n Joshua M. Heitzman; Nicole Caputo; Sun Ying Yang; Ben P. Harvey; and Sylvain Agostini\n\n\n \n\n\n\n July 2021.\n \n\n\n\n
\n\n\n\n \n \n \"RecurrentPaper\n  \n \n\n \n\n \n link\n  \n \n\n bibtex\n \n\n \n  \n \n abstract \n \n\n \n\n \n \n \n \n \n \n \n\n  \n \n \n\n\n\n
\n
@misc{joshua_m_heitzman_recurrent_2021,\n\taddress = {Bremen, GE},\n\ttype = {Oral},\n\ttitle = {Recurrent disease outbreak in a warm temperate marginal coral community},\n\turl = {https://app.icrs2021.smart-abstract.com/shell/submission/21989},\n\tabstract = {Ocean warming and marine pollution, including increased algal, nutrient and sediment loads, lead to coral reef degradation and increased coral disease virulence. In warm temperate ecosystems however, these stressors are enhanced and result in marginal coral communities. In this study, we examine and report on a new coral disease affecting the warm temperate coral species Porites heronensis and the potential contributory factors influencing pathogenesis. This newly described disease is tentatively named "White Mat Syndrome" (WMS) as its visual characteristics include white mat formation on P. heronensis colonies, followed by mortality of the affected coral tissue. WMS has been observed since 2013, and extensively surveyed during 2019 and 2020 disease outbreaks at two marginal coral communities along the Izu Peninsula, Japan (34°39'58.1"N 138°56'33.6"E). Maximum prevalence and incidence of WMS were recorded during the warm summer months (August to November), with its high temperature requirement for disease development confirmed through incubation experiments. Most colonies showing signs of WMS were observed in close contact to the macroalgae Gelidium elegans, common in the region, which tends to senesce and trap sediment from August to November. Microscopy and genetic sequencing of the WMS microbial mat showed an abundance of bacteria from the genus Thiothrix with a diverse consortium of proteobacteria and firmicutes. Furthermore, Thiothrix spp. was also observed on the thalli of G. elegans in both field and laboratory conditions. As both microbial mats and thalli of G. elegans were able to induce the disease under laboratory conditions, we suggest that Thiothrix spp., paired with a consortium of bacteria, are the pathogens responsible for WMS, where G. elegans acts as a pathogen vector and reservoir. As more coral reefs marginalize under climate change, anthropogenic stressors followed by diseases like WMS may increase in the future. Warm-temperate marginal coral communities could allow for the study of coral disease and ecology under high algal coverage, increased sediment loads, extreme temperature variation: all typical of marginal communities.},\n\tlanguage = {English},\n\tauthor = {{Joshua M. Heitzman} and {Nicole Caputo} and {Sun Ying Yang} and {Ben P. Harvey} and {Sylvain Agostini}},\n\tmonth = jul,\n\tyear = {2021},\n}\n\n
\n
\n\n\n
\n Ocean warming and marine pollution, including increased algal, nutrient and sediment loads, lead to coral reef degradation and increased coral disease virulence. In warm temperate ecosystems however, these stressors are enhanced and result in marginal coral communities. In this study, we examine and report on a new coral disease affecting the warm temperate coral species Porites heronensis and the potential contributory factors influencing pathogenesis. This newly described disease is tentatively named \"White Mat Syndrome\" (WMS) as its visual characteristics include white mat formation on P. heronensis colonies, followed by mortality of the affected coral tissue. WMS has been observed since 2013, and extensively surveyed during 2019 and 2020 disease outbreaks at two marginal coral communities along the Izu Peninsula, Japan (34°39'58.1\"N 138°56'33.6\"E). Maximum prevalence and incidence of WMS were recorded during the warm summer months (August to November), with its high temperature requirement for disease development confirmed through incubation experiments. Most colonies showing signs of WMS were observed in close contact to the macroalgae Gelidium elegans, common in the region, which tends to senesce and trap sediment from August to November. Microscopy and genetic sequencing of the WMS microbial mat showed an abundance of bacteria from the genus Thiothrix with a diverse consortium of proteobacteria and firmicutes. Furthermore, Thiothrix spp. was also observed on the thalli of G. elegans in both field and laboratory conditions. As both microbial mats and thalli of G. elegans were able to induce the disease under laboratory conditions, we suggest that Thiothrix spp., paired with a consortium of bacteria, are the pathogens responsible for WMS, where G. elegans acts as a pathogen vector and reservoir. As more coral reefs marginalize under climate change, anthropogenic stressors followed by diseases like WMS may increase in the future. Warm-temperate marginal coral communities could allow for the study of coral disease and ecology under high algal coverage, increased sediment loads, extreme temperature variation: all typical of marginal communities.\n
\n\n\n
\n\n\n
\n \n\n \n \n \n \n \n \n Taxonomical identification of the corals collected during Tara Pacific Expedition using in situ photos and skeleton morphometry.\n \n \n \n \n\n\n \n Guinther Hiromu Mitushasi; Yuko Kitano; Ryan McMinds; Emilie Boissin; Serge Planes; Denis Allemand; and Tara Pacific Consortium\n\n\n \n\n\n\n July 2021.\n \n\n\n\n
\n\n\n\n \n \n \"TaxonomicalPaper\n  \n \n\n \n\n \n link\n  \n \n\n bibtex\n \n\n \n  \n \n abstract \n \n\n \n\n \n \n \n \n \n \n \n\n  \n \n \n\n\n\n
\n
@misc{guinther_hiromu_mitushasi_taxonomical_2021,\n\taddress = {Bremen, GE},\n\ttype = {Oral},\n\ttitle = {Taxonomical identification of the corals collected during {Tara} {Pacific} {Expedition} using in situ photos and skeleton morphometry},\n\turl = {https://app.icrs2021.smart-abstract.com/shell/submission/21989},\n\tabstract = {The taxonomy of scleractinian corals is still open to extensive debate due to the high morphological variability existent among and within the numerous species. This variability can be associated with species plasticity and hybridization, phenotypic polymorphism, geographic variation and diverse environmental factors. Accurate and reproducible methods for coral taxonomy are required to improve our understanding of the distribution and the response to climate change and anthropogenic stressors in coral communities. Recent studies combining skeleton morphometry with genetic analysis have shown the relevance of landmark based skeleton morphology to identify coral species and the populations within. The Tara Pacific expedition collected more than 3000 samples from 30 different islands across two transects crossing the Pacific Ocean (East-West and South-North). Three species, Porites lobata, Pocillopora meandrina and Millepora platyphylla were chosen for their relevance in the reef ecosystem and their presence across the whole Pacific. However, these species present great variations in their morphologies at both the colony and the skeleton levels, making the sampling and post-identification challenging. Here, we present the use of colony morphology and skeleton morphometry landmark analysis for the taxonomical identification of the coral samples collected during the Tara Pacific Expedition. Using colony morphology, we showed that the Pocillopora spp. specimens cluster in at least 5 groups. Skeleton morphometry of all coral samples are being processed using SEM for the identification of microstructural differences among individuals and clusters. Matching this additional information, we expect a further refinement of the clustering obtained from colony morphology. The combination of morphology-based clustering with population genetics data from other Tara Pacific working groups will allow us to clarify the species boundaries within the three genera. Moreover, this will then be linked with environmental and -omics data collected for these specimens, improving our comprehension of the response to climate change, anthropogenic stressors, and the differences among individuals, population and species.},\n\tlanguage = {English},\n\tauthor = {{Guinther Hiromu Mitushasi} and {Yuko Kitano} and {Ryan McMinds} and {Emilie Boissin} and {Serge Planes} and {Denis Allemand} and {Tara Pacific Consortium}},\n\tmonth = jul,\n\tyear = {2021},\n}\n\n
\n
\n\n\n
\n The taxonomy of scleractinian corals is still open to extensive debate due to the high morphological variability existent among and within the numerous species. This variability can be associated with species plasticity and hybridization, phenotypic polymorphism, geographic variation and diverse environmental factors. Accurate and reproducible methods for coral taxonomy are required to improve our understanding of the distribution and the response to climate change and anthropogenic stressors in coral communities. Recent studies combining skeleton morphometry with genetic analysis have shown the relevance of landmark based skeleton morphology to identify coral species and the populations within. The Tara Pacific expedition collected more than 3000 samples from 30 different islands across two transects crossing the Pacific Ocean (East-West and South-North). Three species, Porites lobata, Pocillopora meandrina and Millepora platyphylla were chosen for their relevance in the reef ecosystem and their presence across the whole Pacific. However, these species present great variations in their morphologies at both the colony and the skeleton levels, making the sampling and post-identification challenging. Here, we present the use of colony morphology and skeleton morphometry landmark analysis for the taxonomical identification of the coral samples collected during the Tara Pacific Expedition. Using colony morphology, we showed that the Pocillopora spp. specimens cluster in at least 5 groups. Skeleton morphometry of all coral samples are being processed using SEM for the identification of microstructural differences among individuals and clusters. Matching this additional information, we expect a further refinement of the clustering obtained from colony morphology. The combination of morphology-based clustering with population genetics data from other Tara Pacific working groups will allow us to clarify the species boundaries within the three genera. Moreover, this will then be linked with environmental and -omics data collected for these specimens, improving our comprehension of the response to climate change, anthropogenic stressors, and the differences among individuals, population and species.\n
\n\n\n
\n\n\n
\n \n\n \n \n \n \n \n \n Coral bleaching countermeasures by supplying metal-containing feed ~evaluation the effect at gene expression levels~.\n \n \n \n \n\n\n \n Ikuko Yuyama; Naoko Yasudo; Sayak Higa; Sung-Ying Yang; Sylvain Agostini; Tomhiko Higuchi; Toshihiro Miyajima; Takashi Nakamura; and Hiroyuki Fujimura\n\n\n \n\n\n\n June 2021.\n \n\n\n\n
\n\n\n\n \n \n \"CoralPaper\n  \n \n\n \n\n \n link\n  \n \n\n bibtex\n \n\n \n\n \n\n \n \n \n \n \n \n \n\n  \n \n \n\n\n\n
\n
@misc{ikuko_yuyama_coral_2021,\n\taddress = {online},\n\ttype = {Poster},\n\ttitle = {Coral bleaching countermeasures by supplying metal-containing feed {\\textasciitilde}evaluation the effect at gene expression levels{\\textasciitilde}},\n\turl = {https://confit.atlas.jp/guide/event/jpgu2021/advanced?searchType=subject&subjectTitle=&sessionTitle=&author=Agostini+Sylvain&presenter=&aff=&eventDate=&lectureNumber=&sessionNumber=&query=},\n\tlanguage = {English},\n\tauthor = {{Ikuko Yuyama} and {Naoko Yasudo} and {Sayak Higa} and {Sung-Ying Yang} and {Sylvain Agostini} and {Tomhiko Higuchi} and {Toshihiro Miyajima} and {Takashi Nakamura} and {Hiroyuki Fujimura}},\n\tmonth = jun,\n\tyear = {2021},\n}\n\n
\n
\n\n\n\n
\n\n\n
\n \n\n \n \n \n \n \n \n Skeleton microstructures and in situ colony morphometry analysis of the corals collected during Tara Pacific Expedition.\n \n \n \n \n\n\n \n Guinther Hiromu Mitushasi; Yuko Kitano; Emilie Boissin; Serge Planes; Denis Allemand; Tara Pacific Consortium; and Sylvain Agostini\n\n\n \n\n\n\n June 2021.\n \n\n\n\n
\n\n\n\n \n \n \"SkeletonPaper\n  \n \n\n \n\n \n link\n  \n \n\n bibtex\n \n\n \n\n \n\n \n \n \n \n \n \n \n\n  \n \n \n\n\n\n
\n
@misc{guinther_hiromu_mitushasi_skeleton_2021,\n\taddress = {online},\n\ttype = {Poster},\n\ttitle = {Skeleton microstructures and in situ colony morphometry analysis of the corals collected during {Tara} {Pacific} {Expedition}},\n\turl = {https://confit.atlas.jp/guide/event/jpgu2021/advanced?searchType=subject&subjectTitle=&sessionTitle=&author=Agostini+Sylvain&presenter=&aff=&eventDate=&lectureNumber=&sessionNumber=&query=},\n\tlanguage = {English},\n\tauthor = {{Guinther Hiromu Mitushasi} and {Yuko Kitano} and {Emilie Boissin} and {Serge Planes} and {Denis Allemand} and {Tara Pacific Consortium} and {Sylvain Agostini}},\n\tmonth = jun,\n\tyear = {2021},\n}\n\n
\n
\n\n\n\n
\n\n\n
\n \n\n \n \n \n \n \n \n TARA-JAMBIO Microplastic Mission : Distributions of microplastics in water surface and sediment of Japanese coastal waters.\n \n \n \n \n\n\n \n Kugako Sugimoto; JAMBIO COnsortium; Tara Japan Fondation; and Sylvain Agostini\n\n\n \n\n\n\n June 2021.\n \n\n\n\n
\n\n\n\n \n \n \"TARA-JAMBIOPaper\n  \n \n\n \n\n \n link\n  \n \n\n bibtex\n \n\n \n\n \n\n \n \n \n \n \n \n \n\n  \n \n \n\n\n\n
\n
@misc{kugako_sugimoto_tara-jambio_2021,\n\taddress = {online},\n\ttype = {Oral},\n\ttitle = {{TARA}-{JAMBIO} {Microplastic} {Mission} : {Distributions} of microplastics in water surface and sediment of {Japanese} coastal waters},\n\turl = {https://confit.atlas.jp/guide/event/jpgu2021/advanced?searchType=subject&subjectTitle=&sessionTitle=&author=Agostini+Sylvain&presenter=&aff=&eventDate=&lectureNumber=&sessionNumber=&query=},\n\tlanguage = {English},\n\tauthor = {{Kugako Sugimoto} and {JAMBIO COnsortium} and {Tara Japan Fondation} and {Sylvain Agostini}},\n\tmonth = jun,\n\tyear = {2021},\n}\n\n
\n
\n\n\n\n
\n\n\n
\n \n\n \n \n \n \n \n \n Degraded turf algal systems are ‘locked-in’ by ocean acidification.\n \n \n \n \n\n\n \n Ben Harvey; Ro Allen; Sylvain Agostini; Linn J Hoffmann; Koetsu Kon; Tina C Summerfield; Shigeki Wada; and Jason M. Hall-Spencer\n\n\n \n\n\n\n June 2021.\n \n\n\n\n
\n\n\n\n \n \n \"DegradedPaper\n  \n \n\n \n\n \n link\n  \n \n\n bibtex\n \n\n \n\n \n\n \n \n \n \n \n \n \n\n  \n \n \n\n\n\n
\n
@misc{ben_harvey_degraded_2021,\n\taddress = {online},\n\ttype = {Oral},\n\ttitle = {Degraded turf algal systems are ‘locked-in’ by ocean acidification},\n\turl = {https://confit.atlas.jp/guide/event/jpgu2021/advanced?searchType=subject&subjectTitle=&sessionTitle=&author=Agostini+Sylvain&presenter=&aff=&eventDate=&lectureNumber=&sessionNumber=&query=},\n\tlanguage = {English},\n\tauthor = {{Ben Harvey} and {Ro Allen} and {Sylvain Agostini} and {Linn J Hoffmann} and {Koetsu Kon} and {Tina C Summerfield} and {Shigeki Wada} and {Jason M. Hall-Spencer}},\n\tmonth = jun,\n\tyear = {2021},\n}\n\n
\n
\n\n\n\n
\n\n\n
\n \n\n \n \n \n \n \n \n Photoinhibition as a strategy for corals to mitigate heat stress and resulting ROS production.\n \n \n \n \n\n\n \n Reimi Terayama; Sylvain Agostini; Takashi Nakamura; Tomhiko Higuchi; Ikuko Yuyama; Sung-Ying Yang; Toshihiro Miyajima; and Hiroyuki Fujimura\n\n\n \n\n\n\n June 2021.\n \n\n\n\n
\n\n\n\n \n \n \"PhotoinhibitionPaper\n  \n \n\n \n\n \n link\n  \n \n\n bibtex\n \n\n \n\n \n\n \n \n \n \n \n \n \n\n  \n \n \n\n\n\n
\n
@misc{reimi_terayama_photoinhibition_2021,\n\taddress = {online},\n\ttype = {Oral},\n\ttitle = {Photoinhibition as a strategy for corals to mitigate heat stress and resulting {ROS} production},\n\turl = {https://confit.atlas.jp/guide/event/jpgu2021/advanced?searchType=subject&subjectTitle=&sessionTitle=&author=Agostini+Sylvain&presenter=&aff=&eventDate=&lectureNumber=&sessionNumber=&query=},\n\tlanguage = {English},\n\tauthor = {{Reimi Terayama} and {Sylvain Agostini} and {Takashi Nakamura} and {Tomhiko Higuchi} and {Ikuko Yuyama} and {Sung-Ying Yang} and {Toshihiro Miyajima} and {Hiroyuki Fujimura}},\n\tmonth = jun,\n\tyear = {2021},\n}\n\n
\n
\n\n\n\n
\n\n\n
\n \n\n \n \n \n \n \n \n Epizootiology of a temperate coral disease driven by thermal stress and macroalgal interactions.\n \n \n \n \n\n\n \n Joshua M. Heitzman; Nicole Caputo; Sung-Ying Yang; Ben P. Harvey; and Sylvain Agostini\n\n\n \n\n\n\n June 2021.\n \n\n\n\n
\n\n\n\n \n \n \"EpizootiologyPaper\n  \n \n\n \n\n \n link\n  \n \n\n bibtex\n \n\n \n\n \n\n \n \n \n \n \n \n \n\n  \n \n \n\n\n\n
\n
@misc{joshua_m_heitzman_epizootiology_2021,\n\taddress = {online},\n\ttype = {Oral},\n\ttitle = {Epizootiology of a temperate coral disease driven by thermal stress and macroalgal interactions},\n\turl = {https://confit.atlas.jp/guide/event/jpgu2021/advanced?searchType=subject&subjectTitle=&sessionTitle=&author=Agostini+Sylvain&presenter=&aff=&eventDate=&lectureNumber=&sessionNumber=&query=},\n\tlanguage = {English},\n\tauthor = {{Joshua M. Heitzman} and {Nicole Caputo} and {Sung-Ying Yang} and {Ben P. Harvey} and {Sylvain Agostini}},\n\tmonth = jun,\n\tyear = {2021},\n}\n\n
\n
\n\n\n\n
\n\n\n\n\n\n
\n
\n\n
\n
\n  \n 2020\n \n \n (6)\n \n \n
\n
\n \n \n
\n \n\n \n \n \n \n \n Taxonomical identification of the corals collected during Tara Pacific Expedition using in situ photos and skeleton morphometry.\n \n \n \n\n\n \n Guinther Mitushasi; Yuko Kitano; Ryan McMinds; Emilie Boissin; Serge Planes; Denis Allemand; Tara Pacific Consortium; and Sylvain Agostini\n\n\n \n\n\n\n November 2020.\n \n\n\n\n
\n\n\n\n \n\n \n\n \n link\n  \n \n\n bibtex\n \n\n \n  \n \n abstract \n \n\n \n\n \n \n \n \n \n \n \n\n  \n \n \n\n\n\n
\n
@misc{guinther_mitushasi_taxonomical_2020,\n\taddress = {online},\n\ttype = {Poster},\n\ttitle = {Taxonomical identification of the corals collected during {Tara} {Pacific} {Expedition} using in situ photos and skeleton morphometry},\n\tabstract = {The taxonomy of scleractinian corals is still open to extensive debate due to the high morphological\nvariability existent among and within the numerous species. This variability can be associated with\nspecies plasticity and hybridization, phenotypic polymorphism, geographic variation and diverse\nenvironmental factors. Accurate and reproducible methods for the taxonomical identification of\ncorals are required to improve our understanding of the distribution and the response to climate\nchange and anthropogenic stressors in coral communities. Recent studies combining skeleton\nmorphometry with genetic analysis have shown the relevance of landmark based skeleton\nmorphology to identify coral species and the populations within. The Tara Pacific expedition\ncollected more than 3000 samples from 30 different islands across two transects crossing the\nPacific Ocean (East-West and South-North). Three species, Porites lobata, Pocillopora meandrina\nand Millepora platyphylla were chosen for their relevance in the reef ecosystem and their presence\nacross the whole Pacific. However, these species present great variations in their morphologies at\nboth the colony and the skeleton levels, making the sampling and post-identification challenging.\nHere, we present the use of colony morphology and skeleton morphometry landmark analysis for\nthe taxonomical identification of the coral samples collected during the Tara Pacific Expedition.\nUsing colony morphology, we showed that the Pocillopora spp. specimens cluster in at least 5\ngroups. Skeleton morphometry of all corals samples are being processed using SEM for the\nidentification of micro-structure differences among individuals and clusters. We expect these\nadditional information to further refine the clustering obtained from colony morphology. The\ncombination of morphology-based clustering with population genetics data will allow us to clarify\nthe species boundaries within the three genus. Moreover, the morphological and taxonomical data\nobtained will then be linked with environmental and -omics data collected for these specimens,\ncontributing to our understanding of the response to climate change, anthropogenic stressors, and\nthe differences across individuals, population and species.},\n\tauthor = {{Guinther Mitushasi} and {Yuko Kitano} and {Ryan McMinds} and {Emilie Boissin} and {Serge Planes} and {Denis Allemand} and {Tara Pacific Consortium} and {Sylvain Agostini}},\n\tmonth = nov,\n\tyear = {2020},\n}\n\n
\n
\n\n\n
\n The taxonomy of scleractinian corals is still open to extensive debate due to the high morphological variability existent among and within the numerous species. This variability can be associated with species plasticity and hybridization, phenotypic polymorphism, geographic variation and diverse environmental factors. Accurate and reproducible methods for the taxonomical identification of corals are required to improve our understanding of the distribution and the response to climate change and anthropogenic stressors in coral communities. Recent studies combining skeleton morphometry with genetic analysis have shown the relevance of landmark based skeleton morphology to identify coral species and the populations within. The Tara Pacific expedition collected more than 3000 samples from 30 different islands across two transects crossing the Pacific Ocean (East-West and South-North). Three species, Porites lobata, Pocillopora meandrina and Millepora platyphylla were chosen for their relevance in the reef ecosystem and their presence across the whole Pacific. However, these species present great variations in their morphologies at both the colony and the skeleton levels, making the sampling and post-identification challenging. Here, we present the use of colony morphology and skeleton morphometry landmark analysis for the taxonomical identification of the coral samples collected during the Tara Pacific Expedition. Using colony morphology, we showed that the Pocillopora spp. specimens cluster in at least 5 groups. Skeleton morphometry of all corals samples are being processed using SEM for the identification of micro-structure differences among individuals and clusters. We expect these additional information to further refine the clustering obtained from colony morphology. The combination of morphology-based clustering with population genetics data will allow us to clarify the species boundaries within the three genus. Moreover, the morphological and taxonomical data obtained will then be linked with environmental and -omics data collected for these specimens, contributing to our understanding of the response to climate change, anthropogenic stressors, and the differences across individuals, population and species.\n
\n\n\n
\n\n\n
\n \n\n \n \n \n \n \n 地球温暖化によって温帯性サンゴは 鉛直分布を拡大するか?.\n \n \n \n\n\n \n 黒山 真由美; Sylvain Agostini; 樋口 富彦; and 小松 幸生\n\n\n \n\n\n\n November 2020.\n \n\n\n\n
\n\n\n\n \n\n \n\n \n link\n  \n \n\n bibtex\n \n\n \n  \n \n abstract \n \n\n \n\n \n \n \n \n \n \n \n\n  \n \n \n\n\n\n
\n
@misc{___2020,\n\taddress = {online},\n\ttype = {Poster},\n\ttitle = {地球温暖化によって温帯性サンゴは 鉛直分布を拡大するか?},\n\tabstract = {近年の地球温暖化による海面水温上昇に伴い, サンゴの生息分布は大きく変化するこ\nとが予想されている. これまで, 水平方向の生息域変化については, 数値モデルを用い\nた将来予測など, 研究が進められてきた. 一方で, 地球温暖化がサンゴの鉛直的な分布\nに与える影響の評価は進んでいない. サンゴの体内に共生する褐虫藻は, 光合成を行う\nことでサンゴに生存に必要なエネルギーを提供しているが, 光合成には水温と光量の双\n方が複合的に影響する. そのことから我々は, 地球温暖化による水温上昇は, 光量の低\n下を補償することで, サンゴは水平方向だけでなく, 鉛直方向にも生息分布を拡大させ\nるのではないか, という仮説を立てた. そこで, 本研究では, 温帯性サンゴ エンタクミ\nドリイシを用いて, 温暖化後の水温・光環境を再現した水槽内でサンゴを飼育すること\nで, この仮説を検証した.\n筑波大学下田臨海実験センターで, 2019 年 1 月-9 月に野外水槽実験を行い, 自然水温・\n50\\%光量、自然水温・100\\%光量、自然水温プラス 2°C・50\\%光量、自然水温プラス 2°C・\n100\\%光量の各 4 つの環境下でエンタクミドリイシを飼育した. 最初の 3 か月は 2 週間お\nきに, それ以降は 1 か月おきに生存数を測定した. また, 水中重量, 光合成活性の測定を\nすることで, 水温と光量がエンタクミドリイシの成長率と褐虫藻の光合成系に与える影\n響についても調べた.\n実験の結果, 自然水温・50\\%光量下で飼育していたサンプルは, 実験を始めた約 3 か\n月後に全滅したのに対して, 自然水温プラス 2°C・50\\%光量下で飼育したサンプルは、実\n験終了まで全滅には至らなかったものの, 生存数は徐々に減少した. この結果から, 地\n球温暖化により水温が 2°C上昇しても, 50\\%光量に相当する水深では, 温帯性サンゴは生\n息できないことが示唆された. 50\\%光量下では, 光合成系にダメージはなかったものの,\n成長速度が明瞭に低下していたことから, サンゴの生残に必要なエネルギーを褐虫藻が\n充分に生産できなかったことが死亡の主な原因と考えられた. しかしその一方で, 時間\nあたりの生残率は明瞭に改善が見られており, 水温上昇が光量低下を補償する効果の一\n端を観測することができた. 今後の課題として, 50\\%より高い光量(75\\%など)では, 水\n温上昇の補償効果により, エンタクミドリイシは生息可能なのかを明らかにする必要が\nある.},\n\tauthor = {{黒山 真由美} and {Sylvain Agostini} and {樋口 富彦} and {小松 幸生}},\n\tmonth = nov,\n\tyear = {2020},\n}\n\n
\n
\n\n\n
\n 近年の地球温暖化による海面水温上昇に伴い, サンゴの生息分布は大きく変化するこ とが予想されている. これまで, 水平方向の生息域変化については, 数値モデルを用い た将来予測など, 研究が進められてきた. 一方で, 地球温暖化がサンゴの鉛直的な分布 に与える影響の評価は進んでいない. サンゴの体内に共生する褐虫藻は, 光合成を行う ことでサンゴに生存に必要なエネルギーを提供しているが, 光合成には水温と光量の双 方が複合的に影響する. そのことから我々は, 地球温暖化による水温上昇は, 光量の低 下を補償することで, サンゴは水平方向だけでなく, 鉛直方向にも生息分布を拡大させ るのではないか, という仮説を立てた. そこで, 本研究では, 温帯性サンゴ エンタクミ ドリイシを用いて, 温暖化後の水温・光環境を再現した水槽内でサンゴを飼育すること で, この仮説を検証した. 筑波大学下田臨海実験センターで, 2019 年 1 月-9 月に野外水槽実験を行い, 自然水温・ 50%光量、自然水温・100%光量、自然水温プラス 2°C・50%光量、自然水温プラス 2°C・ 100%光量の各 4 つの環境下でエンタクミドリイシを飼育した. 最初の 3 か月は 2 週間お きに, それ以降は 1 か月おきに生存数を測定した. また, 水中重量, 光合成活性の測定を することで, 水温と光量がエンタクミドリイシの成長率と褐虫藻の光合成系に与える影 響についても調べた. 実験の結果, 自然水温・50%光量下で飼育していたサンプルは, 実験を始めた約 3 か 月後に全滅したのに対して, 自然水温プラス 2°C・50%光量下で飼育したサンプルは、実 験終了まで全滅には至らなかったものの, 生存数は徐々に減少した. この結果から, 地 球温暖化により水温が 2°C上昇しても, 50%光量に相当する水深では, 温帯性サンゴは生 息できないことが示唆された. 50%光量下では, 光合成系にダメージはなかったものの, 成長速度が明瞭に低下していたことから, サンゴの生残に必要なエネルギーを褐虫藻が 充分に生産できなかったことが死亡の主な原因と考えられた. しかしその一方で, 時間 あたりの生残率は明瞭に改善が見られており, 水温上昇が光量低下を補償する効果の一 端を観測することができた. 今後の課題として, 50%より高い光量(75%など)では, 水 温上昇の補償効果により, エンタクミドリイシは生息可能なのかを明らかにする必要が ある.\n
\n\n\n
\n\n\n
\n \n\n \n \n \n \n \n サンゴの摂餌による微量金属元素の濃集.\n \n \n \n\n\n \n 藤ヶ崎 将也; 藤村 弘行; 安田 直子; 塩見 砂理菜; and 樋口 富彦\n\n\n \n\n\n\n November 2020.\n \n\n\n\n
\n\n\n\n \n\n \n\n \n link\n  \n \n\n bibtex\n \n\n \n  \n \n abstract \n \n\n \n\n \n \n \n \n \n \n \n\n  \n \n \n\n\n\n
\n
@misc{___2020-1,\n\taddress = {online},\n\ttype = {Poster},\n\ttitle = {サンゴの摂餌による微量金属元素の濃集},\n\tabstract = {【緒言】高濃度の金属元素は一般にあらゆる生物にとって有害であるが,微量な金属元\n素は生体内の様々な代謝過程に必要不可欠となっている。サンゴの白化初期に生成する\nROS を消去する抗酸化酵素にスーパーオキシドディスムターゼ(SOD)があり, 酵素の\n活性中心に Cu, Zn,Mn および Fe を有している。Biscéré et al.(2018)は無機態の Fe と Mn\nをショウガサンゴ(Stylophora pistillat)に添加し高温に曝した結果, Mn が白化を低減させ,\n光合成・石灰化速度を増加させることを報告している。これは Mn が光合成の電子伝達\n系や SOD の活性中心に使われていることから,これらの機能の制限要素となっており、\n添加によって機能が向上したことを示唆している。しかし,無機態金属元素を添加する\nことはその毒性の強さから環境への影響が懸念される。 動物プランクトンなどに含ま\nれる有機物と結合した金属元素は、サンゴにとってより安全な食物として生体に取り込\nむことが可能である。本研究では、動物プランクトンであるアルテミア(Artemia salina)に\n金属酵母を与え、それをナンヨウミドリイシ(Acropora hyacinthus)に給餌し、安全にサン\nゴ体内に金属を濃集させることを目的と する。\n【方法】琉球大学熱帯生物圏研究センター瀬底研究施設にて,酵母を餌として与えたア\nルテミア,Fe 含有酵母を与えたアルテミアおよび Mn 含有酵母を与えたアルテミアをサ\nンゴへ給餌した。また無給餌のサンゴをコントロールとした。サンゴ生体内の 金属量\nの評価については試料を酸分解して液状化したのち,ICP-MS を用いた誘導 結合プラ\nズマ質量分析法及び,ICP-AES を用いた誘導結合プラズマ発光分析法で評価 した。\n【結果・考察】サンゴの表面積当たりの Mn および Fe の含有量はコントロールで\n そ\nれぞれ 2.3 ng/cm2\n と 47.9 ng/cm2\n であった。Mn 含有量は Mn 酵母のアルテミアを\n 与\nえたサンゴで 3.2 ng/cm2\n と最も高く,Fe 含有量に関しても Mn 酵母のアルテミアを与え\nたサンゴが 126.2 ng/cm 2 と最も高かった。アルテミアにはもともとある一定量の Fe を含\nんでおり,サンゴが Mn と Fe を複合的に摂取している可能性が示唆された。},\n\tauthor = {{藤ヶ崎 将也} and {藤村 弘行} and {安田 直子} and {塩見 砂理菜} and {樋口 富彦}},\n\tcollaborator = {{宮島 利宏} and {Sylvain Agostini} and {湯山 育子} and {中村 隆志}},\n\tmonth = nov,\n\tyear = {2020},\n}\n\n
\n
\n\n\n
\n 【緒言】高濃度の金属元素は一般にあらゆる生物にとって有害であるが,微量な金属元 素は生体内の様々な代謝過程に必要不可欠となっている。サンゴの白化初期に生成する ROS を消去する抗酸化酵素にスーパーオキシドディスムターゼ(SOD)があり, 酵素の 活性中心に Cu, Zn,Mn および Fe を有している。Biscéré et al.(2018)は無機態の Fe と Mn をショウガサンゴ(Stylophora pistillat)に添加し高温に曝した結果, Mn が白化を低減させ, 光合成・石灰化速度を増加させることを報告している。これは Mn が光合成の電子伝達 系や SOD の活性中心に使われていることから,これらの機能の制限要素となっており、 添加によって機能が向上したことを示唆している。しかし,無機態金属元素を添加する ことはその毒性の強さから環境への影響が懸念される。 動物プランクトンなどに含ま れる有機物と結合した金属元素は、サンゴにとってより安全な食物として生体に取り込 むことが可能である。本研究では、動物プランクトンであるアルテミア(Artemia salina)に 金属酵母を与え、それをナンヨウミドリイシ(Acropora hyacinthus)に給餌し、安全にサン ゴ体内に金属を濃集させることを目的と する。 【方法】琉球大学熱帯生物圏研究センター瀬底研究施設にて,酵母を餌として与えたア ルテミア,Fe 含有酵母を与えたアルテミアおよび Mn 含有酵母を与えたアルテミアをサ ンゴへ給餌した。また無給餌のサンゴをコントロールとした。サンゴ生体内の 金属量 の評価については試料を酸分解して液状化したのち,ICP-MS を用いた誘導 結合プラ ズマ質量分析法及び,ICP-AES を用いた誘導結合プラズマ発光分析法で評価 した。 【結果・考察】サンゴの表面積当たりの Mn および Fe の含有量はコントロールで そ れぞれ 2.3 ng/cm2 と 47.9 ng/cm2 であった。Mn 含有量は Mn 酵母のアルテミアを 与 えたサンゴで 3.2 ng/cm2 と最も高く,Fe 含有量に関しても Mn 酵母のアルテミアを与え たサンゴが 126.2 ng/cm 2 と最も高かった。アルテミアにはもともとある一定量の Fe を含 んでおり,サンゴが Mn と Fe を複合的に摂取している可能性が示唆された。\n
\n\n\n
\n\n\n
\n \n\n \n \n \n \n \n サンゴにおける熱ストレスを緩和する戦略としての光阻害.\n \n \n \n\n\n \n 寺山 玲美; Sylvain Agostini; 中村 隆志; and 藤村 弘行\n\n\n \n\n\n\n November 2020.\n \n\n\n\n
\n\n\n\n \n\n \n\n \n link\n  \n \n\n bibtex\n \n\n \n  \n \n abstract \n \n\n \n\n \n \n \n \n \n \n \n\n  \n \n \n\n\n\n
\n
@misc{___2020-2,\n\taddress = {online},\n\ttype = {Poster},\n\ttitle = {サンゴにおける熱ストレスを緩和する戦略としての光阻害},\n\tabstract = {近年, 強光と高水温によって「白化現象」が世界各地で報告されている.白化現象の\n確実な原因やメカニズムは解明されていないが,以下の仮説が中村らによって提唱され\nている(Nakamura et al., in review). 強い光を受けると,褐虫藻がもつ葉緑体の明反\n応に関与するキノンがダメージを受けて,光阻害がおきるため光合成活性が低下する.ま\nた,高水温によってカルビン回路のルビスコは破壊されることがわかっている.ルビスコ\nが壊れて機能しない場合,流れ込んだ過剰なエネルギーは活性酸素と熱となる.これらは\nサンゴと褐虫藻の両者にとって有害である.しかし明反応はカルビン回路よりも上流の\n反応であるため,キノンに光阻害が生じていると,エネルギーの流れがキノンで止まり,\n結果としてルビスコへの過剰なエネルギーの流入量が減るのではないかと考えられる.\n光合成活性が低下するという負の影響をもたらしそうな光阻害だが,実はルビスコが破\n壊されている場合に,有害な熱と活性酸素の発生を抑制する役割があるのではないかと\n考えられる.\n本研究では,モデルを検証するために,ミドリイシとフタマタハマサンゴの 2 種のサン\nゴを用いて光量と水温,光阻害、光合成活性の関係を調べた. 概日周期(12 時間明期:12\n時間暗期)を再現し,最大光量は 500μmol photons m-2s-1 とした.その上で 26oC で測定を\n行った後, 水温を 30oC に変更して測定,またその1週間後に測定を行った.測定は約 2\n時間ごとに行い, 純光合成量,見かけの光合成量および光阻害を示す光合成効率(Y(II))\nをそれぞれ酸素マイクロセンサーと PAM を用いて調べた.\n30oC においてサンゴが白化した.光合成量は光が強くなるにつれ増加したが,30oC に\nおいては 26oC よりも低下した.また Y(II)は低くなり、光阻害が高くなった.光条件は同\nじであったが,30oC においては 26oC よりも Y(II)は低くなっていた.この結果より,高水\n温ストレスに対応して光阻害が強まっていることが考えられる.本実験で得られた結果\nは中村らのモデルと一致している.今後実験を繰り返し,モデルと比較することでさらに\nモデルの精度を高める.},\n\tauthor = {{寺山 玲美} and {Sylvain Agostini} and {中村 隆志} and {藤村 弘行}},\n\tmonth = nov,\n\tyear = {2020},\n}\n\n
\n
\n\n\n
\n 近年, 強光と高水温によって「白化現象」が世界各地で報告されている.白化現象の 確実な原因やメカニズムは解明されていないが,以下の仮説が中村らによって提唱され ている(Nakamura et al., in review). 強い光を受けると,褐虫藻がもつ葉緑体の明反 応に関与するキノンがダメージを受けて,光阻害がおきるため光合成活性が低下する.ま た,高水温によってカルビン回路のルビスコは破壊されることがわかっている.ルビスコ が壊れて機能しない場合,流れ込んだ過剰なエネルギーは活性酸素と熱となる.これらは サンゴと褐虫藻の両者にとって有害である.しかし明反応はカルビン回路よりも上流の 反応であるため,キノンに光阻害が生じていると,エネルギーの流れがキノンで止まり, 結果としてルビスコへの過剰なエネルギーの流入量が減るのではないかと考えられる. 光合成活性が低下するという負の影響をもたらしそうな光阻害だが,実はルビスコが破 壊されている場合に,有害な熱と活性酸素の発生を抑制する役割があるのではないかと 考えられる. 本研究では,モデルを検証するために,ミドリイシとフタマタハマサンゴの 2 種のサン ゴを用いて光量と水温,光阻害、光合成活性の関係を調べた. 概日周期(12 時間明期:12 時間暗期)を再現し,最大光量は 500μmol photons m-2s-1 とした.その上で 26oC で測定を 行った後, 水温を 30oC に変更して測定,またその1週間後に測定を行った.測定は約 2 時間ごとに行い, 純光合成量,見かけの光合成量および光阻害を示す光合成効率(Y(II)) をそれぞれ酸素マイクロセンサーと PAM を用いて調べた. 30oC においてサンゴが白化した.光合成量は光が強くなるにつれ増加したが,30oC に おいては 26oC よりも低下した.また Y(II)は低くなり、光阻害が高くなった.光条件は同 じであったが,30oC においては 26oC よりも Y(II)は低くなっていた.この結果より,高水 温ストレスに対応して光阻害が強まっていることが考えられる.本実験で得られた結果 は中村らのモデルと一致している.今後実験を繰り返し,モデルと比較することでさらに モデルの精度を高める.\n
\n\n\n
\n\n\n
\n \n\n \n \n \n \n \n 褐虫藻のルビスコ活性の測定.\n \n \n \n\n\n \n 塩見 砂理菜; 藤村 弘行; 安田 直子; 塩見 砂理菜; 樋口 富彦; 宮島 利宏; Sylvain Agostini; 湯山 育子; and 中村 隆志\n\n\n \n\n\n\n November 2020.\n \n\n\n\n
\n\n\n\n \n\n \n\n \n link\n  \n \n\n bibtex\n \n\n \n  \n \n abstract \n \n\n \n\n \n \n \n \n \n \n \n\n  \n \n \n\n\n\n
\n
@misc{___2020-3,\n\taddress = {online},\n\ttype = {Poster},\n\ttitle = {褐虫藻のルビスコ活性の測定},\n\tabstract = {サンゴ礁は,近年問題となっている地球温暖化にともなう気候変動により衰退の危機\nに直面している。異常な高水温と強い光によって引き起こされるサンゴの白化現象もそ\nの一つである。白化が長期間続くと栄養状態が悪化してサンゴは死滅する。白化は褐虫\n藻の光合成系が極度に光阻害を受けた状態と考えられているが詳しいメカニズムは分か\nっていない。光阻害は強い光などにより光合成の電子伝達系に過剰な電子が流れること\nによって活性酸素種が生成し,光合成を担うタンパク質が損傷することで生じる。\nWooldridge(2014)は強光によりカルビン回路で使われる CO2 が不足することで,電子伝\n達系への酸化型ニコチンアミドアデニンジヌクレオチドリン酸(NADP+)とアデノシン二\nリン酸(ADP)の供給が追いつかなくなり,結果として過剰の電子が電子伝達系に流れる\nとする白化モデルを提案した(CO2 制限モデル)。しかし,海水中には CO2 のもととなる\n多量の炭酸水素イオンが存在していることや,高水温と光の両方が白化に関係している\nことを考えると,初期の白化を CO2 不足のみに起因することはできない。カルビン回路\nで CO2 を固定する酵素ルビスコ(Rubisco)は 30°C以上の高水温になると不活性となり,機\n能しなくなることが知られている(Lilley et al. 2010)。したがって,高水温によって引き起\nこされたルビスコ活性の低下がカルビン回路の循環低下と NADP+や ADP の供給不足を\n引き起こし,最終的に光合成系に過剰な電子が流れる状態を作り出すと考えられる(本研\n究における仮説:Rubisco 活性低下モデル)。Lilley et al. (2010)は,培養褐虫藻を用いて\nRubisco のオキシゲナーゼ反応を測定したものであり,サンゴに共生する褐虫藻の活性\nやカルボキシラーゼ反応を調べた研究はみられない。サンゴに共生する褐虫藻の Rubisco\n活性を測定することは白化のメカニズムを研究する上で極めて重要であるが, Rubisco 活\n性は細胞から抽出後に急速に失われるため,この分野の研究はほとんど進んでいない。\nしたがって,本研究では,まずほうれん草中に含まれる Rubisco 活性をオキシゲナー\nゼ反応の Mn2+ 化学発光を用いて測定し,同様の方法でサンゴに共生している褐虫藻の\nRubisco 活性の測定を試みたので,その結果について報告する。},\n\tauthor = {{塩見 砂理菜} and {藤村 弘行} and {安田 直子} and {塩見 砂理菜} and {樋口 富彦} and {宮島 利宏} and {Sylvain Agostini} and {湯山 育子} and {中村 隆志}},\n\tmonth = nov,\n\tyear = {2020},\n}\n\n
\n
\n\n\n
\n サンゴ礁は,近年問題となっている地球温暖化にともなう気候変動により衰退の危機 に直面している。異常な高水温と強い光によって引き起こされるサンゴの白化現象もそ の一つである。白化が長期間続くと栄養状態が悪化してサンゴは死滅する。白化は褐虫 藻の光合成系が極度に光阻害を受けた状態と考えられているが詳しいメカニズムは分か っていない。光阻害は強い光などにより光合成の電子伝達系に過剰な電子が流れること によって活性酸素種が生成し,光合成を担うタンパク質が損傷することで生じる。 Wooldridge(2014)は強光によりカルビン回路で使われる CO2 が不足することで,電子伝 達系への酸化型ニコチンアミドアデニンジヌクレオチドリン酸(NADP+)とアデノシン二 リン酸(ADP)の供給が追いつかなくなり,結果として過剰の電子が電子伝達系に流れる とする白化モデルを提案した(CO2 制限モデル)。しかし,海水中には CO2 のもととなる 多量の炭酸水素イオンが存在していることや,高水温と光の両方が白化に関係している ことを考えると,初期の白化を CO2 不足のみに起因することはできない。カルビン回路 で CO2 を固定する酵素ルビスコ(Rubisco)は 30°C以上の高水温になると不活性となり,機 能しなくなることが知られている(Lilley et al. 2010)。したがって,高水温によって引き起 こされたルビスコ活性の低下がカルビン回路の循環低下と NADP+や ADP の供給不足を 引き起こし,最終的に光合成系に過剰な電子が流れる状態を作り出すと考えられる(本研 究における仮説:Rubisco 活性低下モデル)。Lilley et al. (2010)は,培養褐虫藻を用いて Rubisco のオキシゲナーゼ反応を測定したものであり,サンゴに共生する褐虫藻の活性 やカルボキシラーゼ反応を調べた研究はみられない。サンゴに共生する褐虫藻の Rubisco 活性を測定することは白化のメカニズムを研究する上で極めて重要であるが, Rubisco 活 性は細胞から抽出後に急速に失われるため,この分野の研究はほとんど進んでいない。 したがって,本研究では,まずほうれん草中に含まれる Rubisco 活性をオキシゲナー ゼ反応の Mn2+ 化学発光を用いて測定し,同様の方法でサンゴに共生している褐虫藻の Rubisco 活性の測定を試みたので,その結果について報告する。\n
\n\n\n
\n\n\n
\n \n\n \n \n \n \n \n 温帯域ハマサンゴの正体をさぐる〜幻のサガミハナサンゴを求めて〜.\n \n \n \n\n\n \n 北野 裕子; 横地 洋之; 島田 剛; Sylvain Agostini; and 山野 博哉\n\n\n \n\n\n\n November 2020.\n \n\n\n\n
\n\n\n\n \n\n \n\n \n link\n  \n \n\n bibtex\n \n\n \n  \n \n abstract \n \n\n \n\n \n \n \n \n \n \n \n\n  \n \n \n\n\n\n
\n
@misc{___2020-4,\n\taddress = {online},\n\ttype = {Oral},\n\ttitle = {温帯域ハマサンゴの正体をさぐる〜幻のサガミハナサンゴを求めて〜},\n\tabstract = {サガミハナサンゴ Goniopora sagamiensis Eguchi, 1968 は相模湾の荒崎海岸で 1954 年\nに採集された標本に基づいて記載されており,「一見 Porites lichen に似るが珊瑚個体の\n大きさがまったく Porites より異なり明らかに Goniopora に属する」と原記載に記されて\nいるものの,隔壁の数など,莢の大きさ以外の骨格形質はハマサンゴ属の特徴を示す.\n一方で,1992 年に行われた自然環境保全基礎調査では,「荒崎及び亀城礁ではスキュー\nバ潜水で水深 12m まで観察したが造礁サンゴ類は観察できなかった」とあり,サガミハ\nナサンゴが現在も存在しているのかどうか,不明のままであった.このたび,荒崎海岸\nにおいてハマサンゴ属のサンゴを発見・採集できたので,その標本および,サガミハナ\nサンゴ模式標本について調査を行った結果を報告する.\n荒崎海岸のハマサンゴ属は 2020 年 8 月に水深 2 m 以浅の海域において得られた.非\n常に狭い範囲に 5 群体ほど見られ,群体形はちいさなコブをもつ被覆状で緑色をしてい\nた.莢の大きさは 1–1.5 mm で,莢内の特徴は群体の部位によっても異なるが,概して隔\n壁の内側のシナプティキュラがよく発達して輪状に結んでおり,杭の数が最大で 5 つで\nあるなど,フタマタハマサンゴ Porites heronensis Veron, 1985 の記載とよく一致してい\nる.一方,サガミハナサンゴの模式標本(国立科学博物館; NSMT-Cor R: 633)は 2 片\nあり,1 つは液浸標本でもう一方は乾燥標本であった,いずれも多少コブのある被覆状\nで,原記載では莢の大きさについて「2.5〜4 mm の径,通常 3 mm」と記載されていたに\nも関わらず,実際の大きさは 1–1.4 mm であった.軸柱はピン状で,隔壁は 12 枚しかな\nく,杭の数は 5–6 個と,今回荒崎海岸で得られたハマサンゴ属によく似るとともに,こ\nの標本が明らかにハナガササンゴ属ではなくハマサンゴ属であることが確認できた.\n日本の温帯域に分布するハマサンゴ属はこれまでにフタマタハマサンゴの他に,コブ\nハマサンゴ Porites lutea やオキナワハマサンゴ Porites okinawensis の報告があるが,こ\nれらは核 DNA の Histone 領域を用いた分子系統解析で区別することが可能である.現\n在,荒崎海岸でこの度得られた標本を含めて,高知〜相模湾,天草,五島列島で得られ\nたハマサンゴの分子系統解析を進めている.},\n\tauthor = {{北野 裕子} and {横地 洋之} and {島田 剛} and {Sylvain Agostini} and {山野 博哉}},\n\tmonth = nov,\n\tyear = {2020},\n}\n\n
\n
\n\n\n
\n サガミハナサンゴ Goniopora sagamiensis Eguchi, 1968 は相模湾の荒崎海岸で 1954 年 に採集された標本に基づいて記載されており,「一見 Porites lichen に似るが珊瑚個体の 大きさがまったく Porites より異なり明らかに Goniopora に属する」と原記載に記されて いるものの,隔壁の数など,莢の大きさ以外の骨格形質はハマサンゴ属の特徴を示す. 一方で,1992 年に行われた自然環境保全基礎調査では,「荒崎及び亀城礁ではスキュー バ潜水で水深 12m まで観察したが造礁サンゴ類は観察できなかった」とあり,サガミハ ナサンゴが現在も存在しているのかどうか,不明のままであった.このたび,荒崎海岸 においてハマサンゴ属のサンゴを発見・採集できたので,その標本および,サガミハナ サンゴ模式標本について調査を行った結果を報告する. 荒崎海岸のハマサンゴ属は 2020 年 8 月に水深 2 m 以浅の海域において得られた.非 常に狭い範囲に 5 群体ほど見られ,群体形はちいさなコブをもつ被覆状で緑色をしてい た.莢の大きさは 1–1.5 mm で,莢内の特徴は群体の部位によっても異なるが,概して隔 壁の内側のシナプティキュラがよく発達して輪状に結んでおり,杭の数が最大で 5 つで あるなど,フタマタハマサンゴ Porites heronensis Veron, 1985 の記載とよく一致してい る.一方,サガミハナサンゴの模式標本(国立科学博物館; NSMT-Cor R: 633)は 2 片 あり,1 つは液浸標本でもう一方は乾燥標本であった,いずれも多少コブのある被覆状 で,原記載では莢の大きさについて「2.5〜4 mm の径,通常 3 mm」と記載されていたに も関わらず,実際の大きさは 1–1.4 mm であった.軸柱はピン状で,隔壁は 12 枚しかな く,杭の数は 5–6 個と,今回荒崎海岸で得られたハマサンゴ属によく似るとともに,こ の標本が明らかにハナガササンゴ属ではなくハマサンゴ属であることが確認できた. 日本の温帯域に分布するハマサンゴ属はこれまでにフタマタハマサンゴの他に,コブ ハマサンゴ Porites lutea やオキナワハマサンゴ Porites okinawensis の報告があるが,こ れらは核 DNA の Histone 領域を用いた分子系統解析で区別することが可能である.現 在,荒崎海岸でこの度得られた標本を含めて,高知〜相模湾,天草,五島列島で得られ たハマサンゴの分子系統解析を進めている.\n
\n\n\n
\n\n\n\n\n\n
\n
\n\n
\n
\n  \n 2019\n \n \n (4)\n \n \n
\n
\n \n \n
\n \n\n \n \n \n \n \n \n Recurrent disease outbreaks in a warm temperate marginal coral community.\n \n \n \n \n\n\n \n Joshua M. Heitzman; Nicole Caputo; Sung-Ying Yang; and Sylvain Agostini\n\n\n \n\n\n\n November 2019.\n \n\n\n\n
\n\n\n\n \n \n \"RecurrentPaper\n  \n \n\n \n\n \n link\n  \n \n\n bibtex\n \n\n \n\n \n\n \n \n \n \n \n \n \n\n  \n \n \n\n\n\n
\n
@misc{joshua_m_heitzman_recurrent_2019,\n\taddress = {Sapporo, Hokkaido},\n\ttype = {Oral},\n\ttitle = {Recurrent disease outbreaks in a warm temperate marginal coral community},\n\turl = {http://www.jcrs.jp/wp/?page_id=2781},\n\tlanguage = {English},\n\tauthor = {{Joshua M. Heitzman} and {Nicole Caputo} and {Sung-Ying Yang} and {Sylvain Agostini}},\n\tmonth = nov,\n\tyear = {2019},\n}\n\n
\n
\n\n\n\n
\n\n\n
\n \n\n \n \n \n \n \n \n 水温と光量がエンタクミドリイシの生息分布に与える複合影響について.\n \n \n \n \n\n\n \n 黒山真由美; アゴスティーニシルバン; 樋口富彦; and 小松幸生\n\n\n \n\n\n\n November 2019.\n \n\n\n\n
\n\n\n\n \n \n \"水温と光量がエンタクミドリイシの生息分布に与える複合影響についてPaper\n  \n \n\n \n\n \n link\n  \n \n\n bibtex\n \n\n \n\n \n\n \n \n \n \n \n \n \n\n  \n \n \n\n\n\n
\n
@misc{__2019,\n\taddress = {Sapporo, Hokkaido},\n\ttype = {Oral},\n\ttitle = {水温と光量がエンタクミドリイシの生息分布に与える複合影響について},\n\turl = {http://www.jcrs.jp/wp/?page_id=2781},\n\tlanguage = {Japanese},\n\turldate = {2020-04-16},\n\tauthor = {{黒山真由美} and {アゴスティーニシルバン} and {樋口富彦} and {小松幸生}},\n\tmonth = nov,\n\tyear = {2019},\n}\n\n
\n
\n\n\n\n
\n\n\n
\n \n\n \n \n \n \n \n \n 光阻害過程とサンゴの白化現象のモデル化.\n \n \n \n \n\n\n \n 中村隆志; 樋口富彦; 宮島利宏; Agostini Sylvain; 湯山育子; 安田直子; and 藤村弘行\n\n\n \n\n\n\n November 2019.\n \n\n\n\n
\n\n\n\n \n \n \"光阻害過程とサンゴの白化現象のモデル化Paper\n  \n \n\n \n\n \n link\n  \n \n\n bibtex\n \n\n \n\n \n\n \n \n \n \n \n \n \n\n  \n \n \n\n\n\n
\n
@misc{__2019-1,\n\taddress = {Sapporo, Hokkaido},\n\ttype = {Oral},\n\ttitle = {光阻害過程とサンゴの白化現象のモデル化},\n\turl = {http://www.jcrs.jp/wp/?page_id=2781},\n\tlanguage = {Japanese},\n\turldate = {2020-04-16},\n\tauthor = {{中村隆志} and {樋口富彦} and {宮島利宏} and {Agostini Sylvain} and {湯山育子} and {安田直子} and {藤村弘行}},\n\tmonth = nov,\n\tyear = {2019},\n}\n\n
\n
\n\n\n\n
\n\n\n
\n \n\n \n \n \n \n \n \n Effects of ocean acidification on the larval recruitment of temperate corals.\n \n \n \n \n\n\n \n Sylvain Agostini; Kazuo Inaba; Giovanni D ’ Anna; Giacomo Di Stefano; Ben Harvey; Marco Milazzo; Giacomo Milisenda; Carlo Pipitone; Martina Salerno; Ikuko Yuyama; Sun Ying Yang; Tomhiko Higuchi; Arthuro Zenone; and Fabio Badalamenti\n\n\n \n\n\n\n November 2019.\n \n\n\n\n
\n\n\n\n \n \n \"EffectsPaper\n  \n \n\n \n\n \n link\n  \n \n\n bibtex\n \n\n \n\n \n\n \n \n \n \n \n \n \n\n  \n \n \n\n\n\n
\n
@misc{sylvain_agostini_effects_2019,\n\taddress = {Sapporo, Hokkaido},\n\ttype = {Oral},\n\ttitle = {Effects of ocean acidification on the larval recruitment of temperate corals},\n\turl = {http://www.jcrs.jp/wp/?page_id=2781},\n\tlanguage = {English},\n\turldate = {2020-04-16},\n\tauthor = {{Sylvain Agostini} and {Kazuo Inaba} and {Giovanni D ’ Anna} and {Giacomo Di Stefano} and {Ben Harvey} and {Marco Milazzo} and {Giacomo Milisenda} and {Carlo Pipitone} and {Martina Salerno} and {Ikuko Yuyama} and {Sun Ying Yang} and {Tomhiko Higuchi} and {Arthuro Zenone} and {Fabio Badalamenti}},\n\tmonth = nov,\n\tyear = {2019},\n}\n\n
\n
\n\n\n\n
\n\n\n\n\n\n
\n
\n\n
\n
\n  \n 2018\n \n \n (3)\n \n \n
\n
\n \n \n
\n \n\n \n \n \n \n \n \n Is mitochondrial activity a factor for resistance to ocean acidification in corals?.\n \n \n \n \n\n\n \n Sylvain Agostini; Ben Harvey; Risa Takimoto; Joshua Heitzman; Fanny Houlbreque; and Riccardo Rodolfo-Metalapa\n\n\n \n\n\n\n November 2018.\n \n\n\n\n
\n\n\n\n \n \n \"IsPaper\n  \n \n\n \n\n \n link\n  \n \n\n bibtex\n \n\n \n\n \n\n \n \n \n \n \n \n \n\n  \n \n \n\n\n\n
\n
@misc{sylvain_agostini_is_2018,\n\taddress = {Nishihara-machi (Okinawa-ken)},\n\ttype = {Oral},\n\ttitle = {Is mitochondrial activity a factor for resistance to ocean acidification in corals?},\n\turl = {http://www.jcrs.jp/wp/?p=4764},\n\tauthor = {{Sylvain Agostini} and {Ben Harvey} and {Risa Takimoto} and {Joshua Heitzman} and {Fanny Houlbreque} and {Riccardo Rodolfo-Metalapa}},\n\tmonth = nov,\n\tyear = {2018},\n}\n\n
\n
\n\n\n\n
\n\n\n
\n \n\n \n \n \n \n \n Recurrent disease outbreak in a high latitude marginal coral community.\n \n \n \n\n\n \n Joshua M. Heitzman; and Sylvain Agostini\n\n\n \n\n\n\n November 2018.\n \n\n\n\n
\n\n\n\n \n\n \n\n \n link\n  \n \n\n bibtex\n \n\n \n\n \n\n \n \n \n \n \n \n \n\n  \n \n \n\n\n\n
\n
@misc{joshua_m._heitzman_recurrent_2018,\n\taddress = {Nishihara-machi (Okinawa-ken)},\n\ttype = {Poster},\n\ttitle = {Recurrent disease outbreak in a high latitude marginal coral community},\n\tlanguage = {English},\n\tauthor = {{Joshua M. Heitzman} and {Sylvain Agostini}},\n\tmonth = nov,\n\tyear = {2018},\n}\n\n
\n
\n\n\n\n
\n\n\n
\n \n\n \n \n \n \n \n \n Effects of Ocean Acidification on the temperate coral Porites heronensis at its thermal limit.\n \n \n \n \n\n\n \n Risa Takimoto; and Sylvain Agostini\n\n\n \n\n\n\n November 2018.\n \n\n\n\n
\n\n\n\n \n \n \"EffectsPaper\n  \n \n\n \n\n \n link\n  \n \n\n bibtex\n \n\n \n\n \n\n \n \n \n \n \n \n \n\n  \n \n \n\n\n\n
\n
@misc{risa_takimoto_effects_2018,\n\taddress = {Nishihara-machi (Okinawa-ken)},\n\ttype = {Poster},\n\ttitle = {Effects of {Ocean} {Acidification}  on the temperate coral {Porites} heronensis at its thermal limit},\n\turl = {http://www.jcrs.jp/wp/?p=4764},\n\tlanguage = {English},\n\tauthor = {{Risa Takimoto} and {Sylvain Agostini}},\n\tmonth = nov,\n\tyear = {2018},\n}\n\n
\n
\n\n\n\n
\n\n\n\n\n\n
\n
\n\n
\n
\n  \n 2017\n \n \n (5)\n \n \n
\n
\n \n \n
\n \n\n \n \n \n \n \n \n 伊豆下田における造礁サンゴ軟体部の安定同位体比変動.\n \n \n \n \n\n\n \n 富彦 樋口\n\n\n \n\n\n\n November 2017.\n \n\n\n\n
\n\n\n\n \n \n \"伊豆下田における造礁サンゴ軟体部の安定同位体比変動Paper\n  \n \n\n \n\n \n link\n  \n \n\n bibtex\n \n\n \n\n \n\n \n \n \n \n \n \n \n\n  \n \n \n\n\n\n
\n
@misc{___2017,\n\taddress = {Tokyo, Japan},\n\ttype = {Poster},\n\ttitle = {伊豆下田における造礁サンゴ軟体部の安定同位体比変動},\n\tshorttitle = {20th {JCRS}},\n\turl = {http://www.jcrs.jp/wp/?page_id=2781ebordeaux2017.socfjp.com/en/},\n\tlanguage = {English},\n\tauthor = {{富彦 樋口}},\n\tcollaborator = {{Sylvain Agostini} and {弘行 藤村} and {健太郎 田中} and {白井厚太朗}},\n\tmonth = nov,\n\tyear = {2017},\n}\n\n
\n
\n\n\n\n
\n\n\n
\n \n\n \n \n \n \n \n \n Thermal limits of the high latitude coral Porites heronensis.\n \n \n \n \n\n\n \n Yamazaki, W.\n\n\n \n\n\n\n November 2017.\n \n\n\n\n
\n\n\n\n \n \n \"ThermalPaper\n  \n \n\n \n\n \n link\n  \n \n\n bibtex\n \n\n \n\n \n\n \n \n \n \n \n \n \n\n  \n \n \n\n\n\n
\n
@misc{yamazaki_thermal_2017,\n\taddress = {Tokyo, Japan},\n\ttype = {Oral},\n\ttitle = {Thermal limits of the high latitude coral {Porites} heronensis},\n\tshorttitle = {20th {JCRS}},\n\turl = {http://www.jcrs.jp/wp/?page_id=2781ebordeaux2017.socfjp.com/en/},\n\tlanguage = {English},\n\tauthor = {Yamazaki, Wataru},\n\tcollaborator = {{Sylvain Agostini}},\n\tmonth = nov,\n\tyear = {2017},\n}\n\n
\n
\n\n\n\n
\n\n\n
\n \n\n \n \n \n \n \n \n Tara Pacific - Japan Leg: Insights on the tropicalization mechanisms of marine ecosystems.\n \n \n \n \n\n\n \n Agostini, S.\n\n\n \n\n\n\n November 2017.\n \n\n\n\n
\n\n\n\n \n \n \"TaraPaper\n  \n \n\n \n\n \n link\n  \n \n\n bibtex\n \n\n \n  \n \n abstract \n \n\n \n\n \n \n \n \n \n \n \n\n  \n \n \n\n\n\n
\n
@misc{agostini_tara_2017,\n\taddress = {Tokyo, Japan},\n\ttype = {Oral},\n\ttitle = {Tara {Pacific} - {Japan} {Leg}:  {Insights} on the tropicalization mechanisms of marine ecosystems},\n\tshorttitle = {20th {JCRS}},\n\turl = {http://www.jcrs.jp/wp/?page_id=2781ebordeaux2017.socfjp.com/en/},\n\tabstract = {The objective of the Tara PACIFIC expedition is to understand the evolution of coral reefs in the context of climate and demographic changes. Two approaches are used: 1) a global survey across the Pacific along which the coral holobiont and its environment is screened, and 2) specific targeted studies by local researchers. The aim of the Japan study is to understand the mechanisms of tropicalization, where typical macroalgae dominated marine communities in temperate zones shift to “tropical” communities dominated by corals, as seen recently in Kochi and other areas. While temperature plays a certain role, other indirect effects, such as altered competition and grazing pressure, and the effect of ocean acidification remain unclear. We investigated the ecological interactions among corals, algae and fishes across a latitudinal gradient, from Katusyama (Chiba) to Sesoko (Okinawa) and at two CO2 seeps in Japan. \nFor the cross Pacific study, two sampling sites were chosen in Japan. In Chichijima, Ogasawara, the first sampling site, an abundant coral and macrofauna community was observed in narrow fringing reefs along the island coasts. Sesoko Island, the second sampling site, we sampled the healthy southern part of the reef which showed a high diversity of corals. The samples will be integrated among thousands of samples taken across the Pacific, representing the largest scale survey on corals to date.\n  At the northernmost of the Japan study, Katsuyama, kelp co-habited with a small community of corals and an absence of major herbivorous fishes was observed. Southern in the latitudinal gradient, herbivorous fishes such as Calotomus japonicus were first observed in Shikine and increased southerly concurrently to corals, while macroalgae abundance drastically decreased. At the two CO2 seeps, regardless of their latitudes, coral abundance decreased while turf and low profile macroalgae increased. We hypothesize that herbivory plays an important role in the tropicalization of marine ecosystems as temperature favors corals, increasing the habitat available for fishes. In temperate areas, while ocean acidification limit the formation of coral habitat, the future combined effects of temperature and increased herbivory remain sufficient to decrease macroalgae abundance, resulting in simplified ecosystems with a low coral and algal diversity. In the tropics, ocean acidification and increased temperature will drive the ecosystems towards a simplified ecosystems dominated by turfs and macroalgae.},\n\tlanguage = {English},\n\tauthor = {Agostini, Sylvain},\n\tcollaborator = {{Yohei Nakamura} and {Hironobu Fukami} and Maggy, Nugues and {Natacha Roux} and {Yuko Kitano} and {Shoji Yamamoto} and {Sarah Romac} and {Nicolas Floc'h} and {David Lecchini}},\n\tmonth = nov,\n\tyear = {2017},\n}\n\n
\n
\n\n\n
\n The objective of the Tara PACIFIC expedition is to understand the evolution of coral reefs in the context of climate and demographic changes. Two approaches are used: 1) a global survey across the Pacific along which the coral holobiont and its environment is screened, and 2) specific targeted studies by local researchers. The aim of the Japan study is to understand the mechanisms of tropicalization, where typical macroalgae dominated marine communities in temperate zones shift to “tropical” communities dominated by corals, as seen recently in Kochi and other areas. While temperature plays a certain role, other indirect effects, such as altered competition and grazing pressure, and the effect of ocean acidification remain unclear. We investigated the ecological interactions among corals, algae and fishes across a latitudinal gradient, from Katusyama (Chiba) to Sesoko (Okinawa) and at two CO2 seeps in Japan. For the cross Pacific study, two sampling sites were chosen in Japan. In Chichijima, Ogasawara, the first sampling site, an abundant coral and macrofauna community was observed in narrow fringing reefs along the island coasts. Sesoko Island, the second sampling site, we sampled the healthy southern part of the reef which showed a high diversity of corals. The samples will be integrated among thousands of samples taken across the Pacific, representing the largest scale survey on corals to date. At the northernmost of the Japan study, Katsuyama, kelp co-habited with a small community of corals and an absence of major herbivorous fishes was observed. Southern in the latitudinal gradient, herbivorous fishes such as Calotomus japonicus were first observed in Shikine and increased southerly concurrently to corals, while macroalgae abundance drastically decreased. At the two CO2 seeps, regardless of their latitudes, coral abundance decreased while turf and low profile macroalgae increased. We hypothesize that herbivory plays an important role in the tropicalization of marine ecosystems as temperature favors corals, increasing the habitat available for fishes. In temperate areas, while ocean acidification limit the formation of coral habitat, the future combined effects of temperature and increased herbivory remain sufficient to decrease macroalgae abundance, resulting in simplified ecosystems with a low coral and algal diversity. In the tropics, ocean acidification and increased temperature will drive the ecosystems towards a simplified ecosystems dominated by turfs and macroalgae.\n
\n\n\n
\n\n\n
\n \n\n \n \n \n \n \n \n Tropicalization of coastal marine ecosystems: From macroalgae to corals?.\n \n \n \n \n\n\n \n Agostini, S.\n\n\n \n\n\n\n December 2017.\n \n\n\n\n
\n\n\n\n \n \n \"TropicalizationPaper\n  \n \n\n \n\n \n link\n  \n \n\n bibtex\n \n\n \n  \n \n abstract \n \n\n \n\n \n \n \n \n \n \n \n\n  \n \n \n\n\n\n
\n
@misc{agostini_tropicalization_2017,\n\taddress = {Tsukuba, Japan},\n\ttype = {Oral},\n\ttitle = {Tropicalization of coastal marine ecosystems:  {From} macroalgae to corals?},\n\turl = {http://www.shimoda.tsukuba.ac.jp/33rd_international_symposium_eng.html},\n\tabstract = {Warming of the oceans causes an increase in mass coral bleaching events and coral disease occurrences both in terms of frequency and scale1. Tropical corals are so threatened by climate change that high latitude may be their last refuge. In Japan, rapid tropicalization of temperate ecosystems is ongoing with a sharp decrease of macroalgae and recolonization by hermatypic corals, radically changing the ecosystems functions2. However, two important factors remain unclear: the effect of herbivorous fishes and of ocean acidification. The Tara Expeditions Fondation has been leading an expedition to understand the evolution of coral reefs in the context of climate change and demographic changes through a large scale survey across the Pacific and targeted studies in diverse countries including Japan. This talk will present the results obtained during the Tara Pacific Japan Leg during which an international team of scientists studied for one month the mechanisms of tropicalization on a temperature and pH gradient aboard the schooner Tara.\nSix locations along the Kuroshio where selected, ranging from reefs in the Ryukyus Archipelago to marginal coral communities in Kochi, Shikine Islands and Tokyo Bay. Two of these were CO2 seeps: Shikine Island3 and Iwotorishima, providing the opportunity to study the effect of ocean acidification. At the northernmost site kelp co-habited with a small community of corals and an absence of major herbivorous fishes was observed. Southern in the latitudinal gradient, herbivorous fishes such as Calotomus japonicus were first observed in Shikine and increased southerly concurrently to corals, while macroalgae abundance decreased under the increasing grazing pressure. At the two CO2 seeps, regardless of their latitudes, coral abundance decreased while turf and low profile macroalgae increased. The habitat effect, from coral to macroalgae, was also clear with shifts towards subtropical herbivorous fishes in the temperate tropicalized zones and in degraded reefs and ecosystems. \nWhile the change in temperature and habitats enhance the tropicalization of temperate ecosystems, ocean acidification will severely limit the recolonization by corals. Moreover, the future combined effects of temperature and herbivory remain sufficient to limit important foundation species such as kelp. Globally our results show that future conditions will lead to a general loss of biodiversity with a low coral, algal and fish diversity resulting in simplified ecosystems across latitudes.},\n\tlanguage = {EN},\n\tauthor = {Agostini, Sylvain},\n\tmonth = dec,\n\tyear = {2017},\n}\n\n
\n
\n\n\n
\n Warming of the oceans causes an increase in mass coral bleaching events and coral disease occurrences both in terms of frequency and scale1. Tropical corals are so threatened by climate change that high latitude may be their last refuge. In Japan, rapid tropicalization of temperate ecosystems is ongoing with a sharp decrease of macroalgae and recolonization by hermatypic corals, radically changing the ecosystems functions2. However, two important factors remain unclear: the effect of herbivorous fishes and of ocean acidification. The Tara Expeditions Fondation has been leading an expedition to understand the evolution of coral reefs in the context of climate change and demographic changes through a large scale survey across the Pacific and targeted studies in diverse countries including Japan. This talk will present the results obtained during the Tara Pacific Japan Leg during which an international team of scientists studied for one month the mechanisms of tropicalization on a temperature and pH gradient aboard the schooner Tara. Six locations along the Kuroshio where selected, ranging from reefs in the Ryukyus Archipelago to marginal coral communities in Kochi, Shikine Islands and Tokyo Bay. Two of these were CO2 seeps: Shikine Island3 and Iwotorishima, providing the opportunity to study the effect of ocean acidification. At the northernmost site kelp co-habited with a small community of corals and an absence of major herbivorous fishes was observed. Southern in the latitudinal gradient, herbivorous fishes such as Calotomus japonicus were first observed in Shikine and increased southerly concurrently to corals, while macroalgae abundance decreased under the increasing grazing pressure. At the two CO2 seeps, regardless of their latitudes, coral abundance decreased while turf and low profile macroalgae increased. The habitat effect, from coral to macroalgae, was also clear with shifts towards subtropical herbivorous fishes in the temperate tropicalized zones and in degraded reefs and ecosystems. While the change in temperature and habitats enhance the tropicalization of temperate ecosystems, ocean acidification will severely limit the recolonization by corals. Moreover, the future combined effects of temperature and herbivory remain sufficient to limit important foundation species such as kelp. Globally our results show that future conditions will lead to a general loss of biodiversity with a low coral, algal and fish diversity resulting in simplified ecosystems across latitudes.\n
\n\n\n
\n\n\n
\n \n\n \n \n \n \n \n \n Tara Pacific Japan Leg: Tropicalization of Marine Ecosystems under Climate Change and Ocean Acidification.\n \n \n \n \n\n\n \n Agostini, S.; Yohei Nakamura; Maggy, N.; Natacha Roux; Hironobu Fukami; Yuko Kitano; Shoji Yamamoto; and David Lecchini\n\n\n \n\n\n\n October 2017.\n \n\n\n\n
\n\n\n\n \n \n \"TaraPaper\n  \n \n\n \n\n \n link\n  \n \n\n bibtex\n \n\n \n  \n \n abstract \n \n\n \n\n \n \n \n \n \n \n \n\n  \n \n \n\n\n\n
\n
@misc{agostini_tara_2017-1,\n\taddress = {Bordeaux, France},\n\ttype = {Oral},\n\ttitle = {Tara {Pacific} {Japan} {Leg}: {Tropicalization} of {Marine} {Ecosystems} under {Climate} {Change} and {Ocean} {Acidification}},\n\turl = {http://colloquebordeaux2017.socfjp.com/en/},\n\tabstract = {1. Tara Pacific\nInitiated by agnes b and Etienne Bourgois, Tara Expeditions gives scientists the opportunity to develop expeditions around the world to study the marine environment. Crisscrossing the Pacific aboard the schooner Tara, scientists coordinated by Serge Planes (CRIOBE, France) and Denis Allemand (CSM, Monaco) are trying to understand the evolution of coral reefs in the context of demographic and climate change. In addition to this global survey, the Tara Pacific project includes targeted studies in diverse countries including Japan.\n2. Japan Leg: Tropicalization of Marine Ecosystems\nTropical corals are so threatened by climate change that high latitude may be their last refuge. In Japan, tropicalization of temperate ecosystems is ongoing with a sharp decrease of macroalgae and recolonization by hermatypic corals. This rapid shift is possible because of the recent increased temperature and the high connectivity of with the southern tropical coral reefs through the northward current Kuroshio. However, two factors remain unclear: the effect of herbivorous fishes and of ocean acidification. During the Tara Pacific Japan leg, six locations along the Kuroshio where selected, ranging from reefs in the Ryukyus Archipelago to marginal coral communities in Kochi, Shikine Islands and Tokyo Bay. Two of these: Shikine Island and Iwotorishima also provided the opportunity to study the effect of ocean acidification. At each location, coral diversity, coral algae interactions and, herbivorous fishes communities and grazing rates were quantified in two different sites: dominated by corals (healthy reefs or tropicalized areas) and low coral sites (non-tropicalized or degraded reefs).},\n\tlanguage = {English},\n\tauthor = {Agostini, Sylvain and {Yohei Nakamura} and Maggy, Nugues and {Natacha Roux} and {Hironobu Fukami} and {Yuko Kitano} and {Shoji Yamamoto} and {David Lecchini}},\n\tmonth = oct,\n\tyear = {2017},\n}\n\n
\n
\n\n\n
\n 1. Tara Pacific Initiated by agnes b and Etienne Bourgois, Tara Expeditions gives scientists the opportunity to develop expeditions around the world to study the marine environment. Crisscrossing the Pacific aboard the schooner Tara, scientists coordinated by Serge Planes (CRIOBE, France) and Denis Allemand (CSM, Monaco) are trying to understand the evolution of coral reefs in the context of demographic and climate change. In addition to this global survey, the Tara Pacific project includes targeted studies in diverse countries including Japan. 2. Japan Leg: Tropicalization of Marine Ecosystems Tropical corals are so threatened by climate change that high latitude may be their last refuge. In Japan, tropicalization of temperate ecosystems is ongoing with a sharp decrease of macroalgae and recolonization by hermatypic corals. This rapid shift is possible because of the recent increased temperature and the high connectivity of with the southern tropical coral reefs through the northward current Kuroshio. However, two factors remain unclear: the effect of herbivorous fishes and of ocean acidification. During the Tara Pacific Japan leg, six locations along the Kuroshio where selected, ranging from reefs in the Ryukyus Archipelago to marginal coral communities in Kochi, Shikine Islands and Tokyo Bay. Two of these: Shikine Island and Iwotorishima also provided the opportunity to study the effect of ocean acidification. At each location, coral diversity, coral algae interactions and, herbivorous fishes communities and grazing rates were quantified in two different sites: dominated by corals (healthy reefs or tropicalized areas) and low coral sites (non-tropicalized or degraded reefs).\n
\n\n\n
\n\n\n\n\n\n
\n
\n\n
\n
\n  \n 2016\n \n \n (6)\n \n \n
\n
\n \n \n
\n \n\n \n \n \n \n \n development of a simple and easy-to-use multi-wavelength excitation in situ fluorescence imaging apparatus.\n \n \n \n\n\n \n Furushima, Y.; Agostini, S; Maruyama, T.; Shigeno, S; Suzuki, S; and Yamamoto, H\n\n\n \n\n\n\n June 2016.\n \n\n\n\n
\n\n\n\n \n\n \n\n \n link\n  \n \n\n bibtex\n \n\n \n\n \n\n \n \n \n \n \n \n \n\n  \n \n \n\n\n\n
\n
@misc{furushima_development_2016,\n\taddress = {Honolulu, Hawaii, USA},\n\ttype = {Poster},\n\ttitle = {development of a simple and easy-to-use multi-wavelength excitation in situ fluorescence imaging apparatus},\n\tauthor = {Furushima, Yasuo and Agostini, S and Maruyama, Tadashi and Shigeno, S and Suzuki, S and Yamamoto, H},\n\tmonth = jun,\n\tyear = {2016},\n}\n\n
\n
\n\n\n\n
\n\n\n
\n \n\n \n \n \n \n \n Cold stress responses of temperate zone corals.\n \n \n \n\n\n \n Higuchi, T.; Agostini, S.; and Yuyama, I.\n\n\n \n\n\n\n June 2016.\n \n\n\n\n
\n\n\n\n \n\n \n\n \n link\n  \n \n\n bibtex\n \n\n \n\n \n\n \n \n \n \n \n \n \n\n  \n \n \n\n\n\n
\n
@misc{higuchi_cold_2016,\n\taddress = {Honolulu, Hawaii, USA},\n\ttype = {Oral},\n\ttitle = {Cold stress responses of temperate zone corals},\n\tauthor = {Higuchi, Tomihiko and Agostini, Sylvain and Yuyama, Ikuko},\n\tmonth = jun,\n\tyear = {2016},\n}\n\n
\n
\n\n\n\n
\n\n\n
\n \n\n \n \n \n \n \n Ecology and physiology of high latitude coral communities in japan under present and future conditions.\n \n \n \n\n\n \n Agostini, S; Higuchi, T; Wada, S.; Kon, K.; Hall-Spencer, J. M.; Milazzo, M.; Fujimura, H.; Yamazaki, W.; Tsuchiya, Y.; Sato, T.; Shinagawa, H.; Yamada, Y.; and Inaba, K.\n\n\n \n\n\n\n June 2016.\n \n\n\n\n
\n\n\n\n \n\n \n\n \n link\n  \n \n\n bibtex\n \n\n \n\n \n\n \n \n \n \n \n \n \n\n  \n \n \n\n\n\n
\n
@misc{agostini_ecology_2016,\n\taddress = {Honolulu, Hawaii, USA},\n\ttitle = {Ecology and physiology of high latitude coral communities in japan under present and future conditions},\n\tauthor = {Agostini, S and Higuchi, T and Wada, Shigeki and Kon, Koetsu and Hall-Spencer, Jason M. and Milazzo, Marco and Fujimura, Hiroyuki and Yamazaki, Wataru and Tsuchiya, Yasutaka and Sato, Toshihiko and Shinagawa, Hideo and Yamada, Yutaro and Inaba, Kazuo},\n\tmonth = jun,\n\tyear = {2016},\n}\n\n
\n
\n\n\n\n
\n\n\n
\n \n\n \n \n \n \n \n Geochemical and biological description of a CO2 seep system in Shikine Island, Izu.\n \n \n \n\n\n \n Agostini, S.; Wada, S.; Koetsu, K.; Jason, H.; Marco, M.; Yasutaka, T.; Toshihiko, S.; Hideo, S.; Yutaro, Y.; and Kazuo, I.\n\n\n \n\n\n\n March 2016.\n \n\n\n\n
\n\n\n\n \n\n \n\n \n link\n  \n \n\n bibtex\n \n\n \n  \n \n abstract \n \n\n \n\n \n \n \n \n \n \n \n\n  \n \n \n\n\n\n
\n
@misc{agostini_geochemical_2016,\n\taddress = {Tokyo, Japan},\n\ttitle = {Geochemical and biological description of a {CO2} seep system in {Shikine} {Island}, {Izu}.},\n\tabstract = {The use of natural analogues is a straight forward approach to study the effect of ocean acidification at the ecosystem levels. CO2 seeps, where CO2 is bubbling in the water column due to volcanic activity is one of these. However it has often been criticized due to the possible effects of confounding factors such as the presence of toxic gas. Here we will describe the approach we use for assessing the suitability of a CO2 seep recently discovered in Shikine Islands, one of the Seven Izu Island and the results we could obtain on the change at the ecosystem levels due to the local increase in pCO2. The geochemistry of the gas and the water around the seep was thoroughly studied. The gaz contain around 98 to 100 \\% of CO2 but also contained up to 400 ppm of H2S. The measurement of total sulfide and redox potential showed that the zone with detectable sulfide levels was limited to a few meters around the bubbling due to the re-oxidation of the sulfide to sulfate in the well oxygenated water. Total alkalinity was constant across the seep site and control sites around the island. The pH was as low as 6.4 in the lowest zone and a gradient in pH was observed when getting farther from the seeping sites, with zones of pH {\\textasciitilde}7.8 (pCO2 {\\textasciitilde}1000ppm) and with no detectable sulfide levels, suitable for ocean acidification research. Quadrat surveys in the intertidal and subtidal zone showed significant changes in the faunal and algal communities. Overall abundance in calcifiers: scleractinian corals, coralline algae, barnacles, etc. were significantly decreased, confirming other study using natural analogues and laboratory experiments. Moreover, the fleshy algal community diversity was also decreased and the species observed were different among the different sites. More detailed studies are on the way and the field is open to anyone who wants.},\n\tlanguage = {English},\n\tauthor = {Agostini, Sylvain and Wada, Shigeki and Koetsu, Kon and Jason, Hall-Spencer and Marco, Milazzo and Yasutaka, Tsuchiya and Toshihiko, Sato and Hideo, Shinagawa and Yutaro, Yamada and Kazuo, Inaba},\n\tmonth = mar,\n\tyear = {2016},\n}\n\n
\n
\n\n\n
\n The use of natural analogues is a straight forward approach to study the effect of ocean acidification at the ecosystem levels. CO2 seeps, where CO2 is bubbling in the water column due to volcanic activity is one of these. However it has often been criticized due to the possible effects of confounding factors such as the presence of toxic gas. Here we will describe the approach we use for assessing the suitability of a CO2 seep recently discovered in Shikine Islands, one of the Seven Izu Island and the results we could obtain on the change at the ecosystem levels due to the local increase in pCO2. The geochemistry of the gas and the water around the seep was thoroughly studied. The gaz contain around 98 to 100 % of CO2 but also contained up to 400 ppm of H2S. The measurement of total sulfide and redox potential showed that the zone with detectable sulfide levels was limited to a few meters around the bubbling due to the re-oxidation of the sulfide to sulfate in the well oxygenated water. Total alkalinity was constant across the seep site and control sites around the island. The pH was as low as 6.4 in the lowest zone and a gradient in pH was observed when getting farther from the seeping sites, with zones of pH ~7.8 (pCO2 ~1000ppm) and with no detectable sulfide levels, suitable for ocean acidification research. Quadrat surveys in the intertidal and subtidal zone showed significant changes in the faunal and algal communities. Overall abundance in calcifiers: scleractinian corals, coralline algae, barnacles, etc. were significantly decreased, confirming other study using natural analogues and laboratory experiments. Moreover, the fleshy algal community diversity was also decreased and the species observed were different among the different sites. More detailed studies are on the way and the field is open to anyone who wants.\n
\n\n\n
\n\n\n
\n \n\n \n \n \n \n \n thermal performance of the high latitude coral porites heronensis.\n \n \n \n\n\n \n Yamazaki, W; and Agostini, S\n\n\n \n\n\n\n June 2016.\n \n\n\n\n
\n\n\n\n \n\n \n\n \n link\n  \n \n\n bibtex\n \n\n \n\n \n\n \n \n \n \n \n \n \n\n  \n \n \n\n\n\n
\n
@misc{yamazaki_thermal_2016,\n\taddress = {Honolulu, Hawaii, USA},\n\ttitle = {thermal performance of the high latitude coral porites heronensis},\n\tauthor = {Yamazaki, W and Agostini, S},\n\tmonth = jun,\n\tyear = {2016},\n}\n\n
\n
\n\n\n\n
\n\n\n
\n \n\n \n \n \n \n \n Seasonal variation of the antioxidant enzyme activity in the hermatypic corals.\n \n \n \n\n\n \n Miyazato, A; Fujimura, H; Nakamura, S; Higuchi, T; and Agostini, S\n\n\n \n\n\n\n June 2016.\n \n\n\n\n
\n\n\n\n \n\n \n\n \n link\n  \n \n\n bibtex\n \n\n \n\n \n\n \n \n \n \n \n \n \n\n  \n \n \n\n\n\n
\n
@misc{miyazato_seasonal_2016,\n\taddress = {Honolulu, Hawaii, USA},\n\ttitle = {Seasonal variation of the antioxidant enzyme activity in the hermatypic corals},\n\tauthor = {Miyazato, A and Fujimura, H and Nakamura, S and Higuchi, T and Agostini, S},\n\tmonth = jun,\n\tyear = {2016},\n}\n\n
\n
\n\n\n\n
\n\n\n\n\n\n
\n
\n\n
\n
\n  \n 2015\n \n \n (1)\n \n \n
\n
\n \n \n
\n \n\n \n \n \n \n \n Using CO2 seep to study the effect of ocean acidification on marine ecosystem: the case study of a CO2 seep in Shikine Island, Izu.\n \n \n \n\n\n \n Agostini, S.; Wada, S.; Koetsu, K.; Jason, H.; Marco, M.; Yasutaka, T.; Toshihiko, S.; Hideo, S.; Yutaro, Y.; and Kazuo, I.\n\n\n \n\n\n\n November 2015.\n \n\n\n\n
\n\n\n\n \n\n \n\n \n link\n  \n \n\n bibtex\n \n\n \n  \n \n abstract \n \n\n \n\n \n \n \n \n \n \n \n\n  \n \n \n\n\n\n
\n
@misc{agostini_using_2015,\n\taddress = {Tokyo, Japan},\n\ttitle = {Using {CO2} seep to study the effect of ocean acidification on marine ecosystem: the case study of a {CO2} seep in {Shikine} {Island}, {Izu}.},\n\tabstract = {The use of natural analogues is a straight forward approach to study the effect of ocean acidification at the ecosystem levels. CO2 seeps, where CO2 is bubbling in the water column due to volcanic activity is one of these. However it has often been criticized due to the possible effects of confounding factors such as the presence of toxic gas. Here we will describe the approach we use for assessing the suitability of a CO2 seep recently discovered in Shikine Islands, one of the Seven Izu Island and the results we could obtain on the change at the ecosystem levels due to the local increase in pCO2. The geochemistry of the gas and the water around the seep was thoroughly studied. The gaz contain around 98 to 100 \\% of CO2 but also contained up to 400 ppm of H2S. The measurement of total sulfide and redox potential showed that the zone with detectable sulfide levels was limited to a few meters around the bubbling due to the re-oxidation of the sulfide to sulfate in the well oxygenated water. Total alkalinity was constant across the seep site and control sites around the island. The pH was as low as 6.4 in the lowest zone and a gradient in pH was observed when getting farther from the seeping sites, with zones of pH {\\textasciitilde}7.8 (pCO2 {\\textasciitilde}1000ppm) and with no detectable sulfide levels, suitable for ocean acidification research. Quadrat surveys in the intertidal and subtidal zone showed significant changes in the faunal and algal communities. Overall abundance in calcifiers: scleractinian corals, coralline algae, barnacles, etc. were significantly decreased, confirming other study using natural analogues and laboratory experiments. Moreover, the fleshy algal community diversity was also decreased and the species observed were different among the different sites. More detailed studies are on the way and the field is open to anyone who wants.},\n\tlanguage = {English},\n\tauthor = {Agostini, Sylvain and Wada, Shigeki and Koetsu, Kon and Jason, Hall-Spencer and Marco, Milazzo and Yasutaka, Tsuchiya and Toshihiko, Sato and Hideo, Shinagawa and Yutaro, Yamada and Kazuo, Inaba},\n\tmonth = nov,\n\tyear = {2015},\n}\n\n
\n
\n\n\n
\n The use of natural analogues is a straight forward approach to study the effect of ocean acidification at the ecosystem levels. CO2 seeps, where CO2 is bubbling in the water column due to volcanic activity is one of these. However it has often been criticized due to the possible effects of confounding factors such as the presence of toxic gas. Here we will describe the approach we use for assessing the suitability of a CO2 seep recently discovered in Shikine Islands, one of the Seven Izu Island and the results we could obtain on the change at the ecosystem levels due to the local increase in pCO2. The geochemistry of the gas and the water around the seep was thoroughly studied. The gaz contain around 98 to 100 % of CO2 but also contained up to 400 ppm of H2S. The measurement of total sulfide and redox potential showed that the zone with detectable sulfide levels was limited to a few meters around the bubbling due to the re-oxidation of the sulfide to sulfate in the well oxygenated water. Total alkalinity was constant across the seep site and control sites around the island. The pH was as low as 6.4 in the lowest zone and a gradient in pH was observed when getting farther from the seeping sites, with zones of pH ~7.8 (pCO2 ~1000ppm) and with no detectable sulfide levels, suitable for ocean acidification research. Quadrat surveys in the intertidal and subtidal zone showed significant changes in the faunal and algal communities. Overall abundance in calcifiers: scleractinian corals, coralline algae, barnacles, etc. were significantly decreased, confirming other study using natural analogues and laboratory experiments. Moreover, the fleshy algal community diversity was also decreased and the species observed were different among the different sites. More detailed studies are on the way and the field is open to anyone who wants.\n
\n\n\n
\n\n\n\n\n\n
\n
\n\n
\n
\n  \n 2014\n \n \n (3)\n \n \n
\n
\n \n \n
\n \n\n \n \n \n \n \n Diversity and Ecophysiology of temperate corals in Izu, Japan.\n \n \n \n\n\n \n Sylvain Agostini; Tomihiko Higuchi; Kirsty Smith; and Akiyuki Irikawa\n\n\n \n\n\n\n November 2014.\n \n\n\n\n
\n\n\n\n \n\n \n\n \n link\n  \n \n\n bibtex\n \n\n \n\n \n\n \n \n \n \n \n \n \n\n  \n \n \n\n\n\n
\n
@misc{sylvain_agostini_diversity_2014,\n\taddress = {Kochi, Japan},\n\ttype = {Oral},\n\ttitle = {Diversity and {Ecophysiology} of temperate corals in {Izu}, {Japan}.},\n\tauthor = {{Sylvain Agostini} and {Tomihiko Higuchi} and {Kirsty Smith} and {Akiyuki Irikawa}},\n\tmonth = nov,\n\tyear = {2014},\n}\n\n
\n
\n\n\n\n
\n\n\n
\n \n\n \n \n \n \n \n Seasonal variation of the metabolism of temperate corals in Izu, Japan.\n \n \n \n\n\n \n Sylvain Agostini; Tomihiko Higuchi; Kirsty Smith; and Akiyuki Irikawa\n\n\n \n\n\n\n June 2014.\n \n\n\n\n
\n\n\n\n \n\n \n\n \n link\n  \n \n\n bibtex\n \n\n \n\n \n\n \n \n \n \n \n \n \n\n  \n \n \n\n\n\n
\n
@misc{sylvain_agostini_seasonal_2014,\n\taddress = {Kenting, Taiwan},\n\ttitle = {Seasonal variation of the metabolism of temperate corals in {Izu}, {Japan}.},\n\tauthor = {{Sylvain Agostini} and {Tomihiko Higuchi} and {Kirsty Smith} and {Akiyuki Irikawa}},\n\tmonth = jun,\n\tyear = {2014},\n}\n\n
\n
\n\n\n\n
\n\n\n
\n \n\n \n \n \n \n \n \n Local temperature tolerance in the native range of an invasive species suggests pre- adaptation to New Zealand conditions.\n \n \n \n \n\n\n \n Smith, K.; Agostini, S.; Saito, Y.; Abbott, C.; and Andrew Fidler\n\n\n \n\n\n\n 2014.\n \n\n\n\n
\n\n\n\n \n \n \"LocalPaper\n  \n \n\n \n\n \n link\n  \n \n\n bibtex\n \n\n \n  \n \n abstract \n \n\n \n\n \n \n \n \n \n \n \n\n  \n \n \n\n\n\n
\n
@misc{smith_local_2014,\n\taddress = {Nelson, New Zealand},\n\ttitle = {Local temperature tolerance in the native range of an invasive species suggests pre- adaptation to {New} {Zealand} conditions},\n\turl = {http://nzmss.org/events/},\n\tabstract = {Mitochondrial (mt) genome evolution has been assumed to be selectively neutral even though mitochondria are the main producers of cellular energy. Recent studies indicate that metabolic requirements can exert selective pressures on the mitochondrial genome, leading to mitochondrial genotypes adapted to different environments. Phylogenetic analyses of the globally invasive marine tunicate Didemnum vexillum, using partial mtCOI sequences, revealed two distinct clades: one (clade B) apparently restricted to its native region (NW Pacific) and the other (clade A) now found in temperate coastal areas around the world. We hypothesized that clade B’s restricted distribution may reflect it being inherently less thermotolerant than clade A.\nMultiple mitochondrial genomes from both clades were sequenced and showed significant inter-clade differences in predicted sequences of enzyme sub-units involved in oxidative phosphorylation. Laboratory experiments, carried out in Japan, examined thermal stress tolerance and mitochondrial enzyme function of colonies from both clades A and B. Didemnum vexillum clade A appears to be adapted to lower water temperatures than B, consistent with its restriction to temperate waters. Integrating information on environmental conditions and physiological responses of invasive and non-invasive sibling clades/species is a promising avenue for linking genotypes and phenotypes involved in local adaptation.},\n\tauthor = {Smith, Kirsty and Agostini, Sylvain and Saito, Yasunori and Abbott, Cathryn and {Andrew Fidler}},\n\tyear = {2014},\n}\n
\n
\n\n\n
\n Mitochondrial (mt) genome evolution has been assumed to be selectively neutral even though mitochondria are the main producers of cellular energy. Recent studies indicate that metabolic requirements can exert selective pressures on the mitochondrial genome, leading to mitochondrial genotypes adapted to different environments. Phylogenetic analyses of the globally invasive marine tunicate Didemnum vexillum, using partial mtCOI sequences, revealed two distinct clades: one (clade B) apparently restricted to its native region (NW Pacific) and the other (clade A) now found in temperate coastal areas around the world. We hypothesized that clade B’s restricted distribution may reflect it being inherently less thermotolerant than clade A. Multiple mitochondrial genomes from both clades were sequenced and showed significant inter-clade differences in predicted sequences of enzyme sub-units involved in oxidative phosphorylation. Laboratory experiments, carried out in Japan, examined thermal stress tolerance and mitochondrial enzyme function of colonies from both clades A and B. Didemnum vexillum clade A appears to be adapted to lower water temperatures than B, consistent with its restriction to temperate waters. Integrating information on environmental conditions and physiological responses of invasive and non-invasive sibling clades/species is a promising avenue for linking genotypes and phenotypes involved in local adaptation.\n
\n\n\n
\n\n\n\n\n\n
\n
\n\n
\n
\n  \n 2013\n \n \n (1)\n \n \n
\n
\n \n \n
\n \n\n \n \n \n \n \n Biological control of the chemistry of micro-environments in corals.\n \n \n \n\n\n \n Sylvain Agostini; Hiroyuki Fujimura; Tomihiko Higuchi; Ikuko Yuyama; Beatriz E Casareto; Yoshimi Suzuki; and Yoshikatsu Nakano\n\n\n \n\n\n\n December 2013.\n \n\n\n\n
\n\n\n\n \n\n \n\n \n link\n  \n \n\n bibtex\n \n\n \n\n \n\n \n \n \n \n \n \n \n\n  \n \n \n\n\n\n
\n
@misc{sylvain_agostini_biological_2013,\n\taddress = {Okinawa, Japan},\n\ttype = {Oral},\n\ttitle = {Biological control of the chemistry of micro-environments in corals.},\n\tauthor = {{Sylvain Agostini} and {Hiroyuki Fujimura} and {Tomihiko Higuchi} and {Ikuko Yuyama} and {Beatriz E Casareto} and {Yoshimi Suzuki} and {Yoshikatsu Nakano}},\n\tmonth = dec,\n\tyear = {2013},\n}\n\n
\n
\n\n\n\n
\n\n\n\n\n\n
\n
\n\n\n\n\n
\n\n\n \n\n \n \n \n \n\n
\n"}; document.write(bibbase_data.data);