“Oceans – and the impact of humans and climate change” - OIST-Tohoku U. 2nd Joint Workshop on Marine Science


2022年4月25日 (月) (All day)2022年4月26日 (火) (All day)


OIST B250/Zoom



“Oceans - and the impact of humans and climate change” - OIST-Tohoku U. 2nd Joint Workshop on Marine Science

Symposium Abstract:

Earth's oceans are undergoing a progressive acidification and warming due to increasing anthropogenic CO2 production. While climate change poses a global threat to biodiversity and ecosystem functions little is known about its impact on Okinawan coral reefs. Therefore, this workshop represents a perfect occasion and Okinawa is a perfect place to share and explore the ways in which scientists from OIST and Tohoku University are actively studying the impact of climate change on marine ecosystems across Japan.


Apply Poster Registration for poster presentation Deadline:15th April, 2022

Submit Poster Poster submission (Final version) Deadline: 20th April, 2022

Register Registration for participation Deadline:21st April, 2022

*Poster session will be held on-site only.


Please download the program here.

Coffee and snacks will be served during the networking time!

Talk Session (Hybrid):

  Speakers Affiliation Talk Title/Abstract

Dr. Shusaku Sugimoto,

Associate Professor

Tohoku University, Physical Oceanography Laboratory

Enhanced warming of subsurface ocean south of Japan

North Pacific subtropical mode water, which is water mass of vertically uniform temperature that is a few hundred meters thick and distributed widely in the subtropical subsurface ocean, has warmed over the past seven decades. The rate of the warming is 1.13 ± 0.27 °C per century, which is twice as large than the surface. The enhanced warming can be traced back to the surface warming in the formation regions of subtropical mode water along the western boundary current extensions, which suggests that it is a robust feature of global warming.


Dr. Ulf Dieckmann,


OIST, Complexity Science and Evolution Unit

Innovative integrative assessments for promoting sustainable fisheries

Fisheries are a key source of protein for billions of people around the world and are of particular importance to coastal communities. Even though the need for sustainable fisheries management has become widely recognized, current practices of assessment and management are still focused almost exclusively on the demography of target stocks. This narrow perspective misses out on the wider biological impacts of fisheries, on the socio-economic implications of ecosystem services, and on the plurality of stakeholder interests. In this presentation, I will describe innovative approaches for broadening this focus by (1) addressing multiple eco-evolutionary impacts, (2) examining multiple societal objectives, and (3) reconciling multiple stakeholder groups. Practices of sustainable fisheries management will need to account for and integrate these three dimensions if they are to achieve their objectives and serve all sectors of society.


Dr. Michio Kondoh,


Tohoku University, Ecological Integration Laboratory

An environmental DNA approach to the complexity of ecological systems

Understanding biodiversity and its responses to climate change or human activities is becoming one of the most important challenges of Anthropocene. However, the complexity and enormity of ecological system make it an extremely challenging field. In this talk I propose a data-driven, model-free approach that combines a biodiversity monitoring data and nonlinear time-series analysis as a powerful tool to overcome these research difficulties and make ecology a more practical discipline. Recently developing environmental DNA-based biodiversity survey can grow as a core technology contributing to such an approach not only by providing “ecological big data”, but also by empowering citizens involved in biodiversity conservation. I would like to introduce our current efforts of establishing a nationwide eDNA monitoring network, ANEMONE. 


Dr. Haruka Suzuki,

Assistant Professor

Tohoku University, Marine Plant Ecology Laboratory

Recent distributional shifts of canopy-forming seaweeds

Canopy-forming large brown algae such as kelps and fucoids are creating seaweed beds that provide biomass, habitat, and food for associated species and are some of the most productive and biodiverse ecosystems on rocky shore reefs. However, in recent global warming, decline, and loss of seaweed beds, distributional shifts of canopy-forming algae have been widely reported around the world. I will introduce the changes in seaweed beds based on long-term monitoring projects in Japan, the shift of seaweed beds based on prediction models, and the expansion mechanism of tropical species based on population genetic analysis in comparison with temperate species.


Dr. Roger Huerlimann,

Postdoctoral Scholar

OIST, Marine Climate Change Unit

Aquaculture in a warming world

Aquaculture is an important contributor in global food production and food security. Seafood is globally the third most important food source and is of especial importance in Asia. While global wild caught fisheries have been stagnating over the last 20 years, farmed seafood has been one of the fastest growing industries in the world. However, like organisms in the ocean, aquaculture species are under threat of Climate Change. And while there has been some research into how species deal with increased temperatures, the effect on the associated microbiomes has been limited. In my talk I will cover our research to date in this area, as well as our future research plans focusing on the locally important Malabar grouper in Okinawa.


Dr. Kina Hayashi,

Research Fellow

OIST, Marine Eco-Evo-Devo Unit

Population genetic structure and conservation of Amphiprion ocellaris in the Ryukyu Archipelago

Anemonefish live symbiotically with host anemones in shallow waters of the tropical and subtropical regions of the Indo-Pacific Oceans. They are among the most vulnerable to the effects of human activities (land reclamation, pollution, etc.) and global warming. Community analysis in the Ryukyu Archipelago revealed that Amphiprion ocellaris, especially near the coast, has been reduced by reclamation, thereby degrading the diversity of anemonefish-host anemone ecosystem. Population genetic study by mt-DNA suggested that they are mixed genetically across the Ryukyu Archipelago, and all haplotype in CR are included in the group found in Sulawesi. Amphiprion ocellaris has a very high dispersal capacity, so the best conservation measures may be to preserve the coastal environment and wait for natural recovery.


Dr. James Reimer,

Associate Professor

University of the Ryukyus, MISE (Molecular Invertebrate Systematics & Ecology) Lab

Anthropogenic impacts on marine benthos: lessons from Okinawa, Japan

Reducing local stressors allows for better protection of valuable ecosystem services that coral reef ecosystems provide. The nearshore reefs of Okinawa Island experience a wide gradient of anthropogenic stressors. We introduce recent research on how ongoing coastal development impacts coral reefs around Okinawa Island. Coastal development such as land reclamation, port construction, and coastal hardening are implicated in coral and fish community shifts, coral reef compression, and potential losses of unique, site-specific diversity. These impacts are not limited to hard corals and fishes, but occur across the taxonomic diversity and different trophic levels of coral reef organisms. More effective conservation of remaining pristine coral reef locations will become only increasingly important as climate change progresses into the future.


Dr. Haruko Kurihara,


University of the Ryukyus, Kurihara Laboratory, Faculty of Science

Climate change impacts on Japan coastal ecosystem services.

Climate change including ocean warming and acidification is suspected to critically affect marine organisms and ecosystems at near future. Here, we will give some examples of studies and some present projects aiming to evaluate potential impacts of those environmental change on the marine organisms and its potential impact on the ecosystem services such as food sources, coastal protection and tourism which we benefit from our coastal ocean.

Video Archives

Panel Discussion (Hybrid):



Video Archive

OIST Unit Introduction (Hybrid):

1 Marine Genomics Unit Dr. Eiichi Shoguchi Group Leader
2 Marine Climate Change Unit Dr. Timothy Ravasi Professor
3 Marine Eco-Evo-Devo Unit Dr. Timothy Ravasi Professor
4 Genomics and Regulatory Systems Unit Dr. Nicholas M. Luscombe Professor
5 Complexity Science and Evolution Unit Dr. Ulf Dieckmann Professor
6 Marine Biophysics Unit Dr. Heng Wu Postdoctoral Scholar

Poster Session (On-site Only):

Apply Poster Registration for poster presentation Deadline:15th April, 2022

Submit Poster Poster submission (Final version) Deadline: 20th April, 2022

  Authors Title Poster Keywords

Ms. Emma Gairin

Marine Eco-Evo-Devo Unit, OIST

Shoreline evolution on Bora-Bora from 1955 to 2019 and impacts of urbanisation on coastal habitats of coral reef fish Here Remote sensing; coastal habitats; fish; artificialisation

Dr. Charles Plessy
Group Leader

Genomics and Regulation Systems Unit, OIST

Related animals with small genomes, conserved morphology, but flexible gene order: Oikopleura dioica Here genome, evolution, tunicates, reproducible research

Mr. Rocktim Ramen Das

Graduate School of Engineering and Science, The University of the Ryukyus

Four-year field survey of Black Band Disease and Skeletal Growth Anomalies in encrusting Montipora spp. corals around Sesoko Is. Here Coral Disease, Okinawa, Long-term monitoring

Ms. Rio Kashimoto

Marine Eco-Evo-Devo and Marine Genomics, OIST

Transcriptomes of giant sea anemones from Okinawa as a tool for understanding their phylogeny and symbiotic relationships Here sea anemones, anemonefish, transcriptome, phylogeny, nematocysts, dinoflagellate, Symbiodiniaceae, Cladocopium

Dr. Aki Masunaga
Research Unit Technician

Genomics and Regulatory Systems Unit, OIST

Uncovering speciation and population structures in the marine zooplankton, Oikopleura dioica Here Speciation, diversity, marine plankton

Dr. Maria Santos
Research Fellow

Evolution, Cell Biology, and Symbiosis Unit, OIST

Global diversity of coral endosymbionts Here Evolution, ecology, marine microbiology, protists, bacteria

Dr. Dewi Langlet
Staff Scientist

Evolution, Cell Biology, and Symbiosis Unit, OIST

Metagenomics reveals diverse host-specific photosymbionts in Okinawan large benthic foraminifera Here Foraminifera, Symbiosis, Metagenomics, Okinawa

Dr. Michael Mansfield
Research Fellow

Genomics and Regulatory Systems Unit, OIST

Molecular clock estimation of divergence times in populations of Oikopleura dioica Here Marine biology, phylogenetics, bioinformatics, phylogenomics, genetics

Dr. Yumiko Masukagami
Research Unit Technician

Evolution, Cell Biology, and Symbiosis Unit, OIST

Developing methods for studying the tiniest tiny marine predators and their symbioses Here Marine protist, Symbiosis


-Registration is closed-

Registration is required to attend this event. Registration for participation Deadline:21st April, 2022

Please register from below link. You will be able to choose whether to participate online or on-site. Zoom link to join this workshop will be informed by email after you register. Please ignore the zoom link if you chose to participate on-site.



COVID-19 Prevention Measures:

Participants are asked to:

  • Please refrain from attending an event if you have fever or any other cold symptoms.
  • Please carefully consider your participation if you are coming from areas where the local government has issued an official request to refrain from going out.
  • Bring a mask and wear it correctly, practice good cough etiquette and wash hands with soap and disinfect fingers thoroughly.
  • Maintain a sufficient distance (1m and more) between yourself, the speakers, and other participants
  • Minimize interactions before and after the event and during the breaks.
  • Eat only inside the designated meal areas and avoid crowding during meals. Do not eat inside the venue.
  • Use contact tracing apps such as COCOA (COVID-19 Contact-Confirming Application).
  • Agree to the collecting of information such as name, phone number, and health status in the event of a confirmed infection.
  • If identified as a close-contact, follow the self-isolation guidelines determined by the local health authorities and the Japanese government.
  • Check health condition before attending an event by measuring body temperature etc.


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