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Plankton Lab
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The lab explores how marine ecosystems work through the ecology and diversity of plankton.

AboutAbout the lab
Exploring marine ecosystems through plankton
The Plankton Lab studies the ecology and physiological characteristics of plankton and micronekton that live widely in the ocean.
It aims to clarify how marine ecosystems work and the roles these organisms play within them.
The lab holds a weekly seminar where members present papers and research to one another, and it conducts joint research with faculty members within the institute, including those at the Center for International Collaboration.
Lab visits and tours are accepted at any time, and online meetings are also available.
Key terms
- Micronekton
- Small swimming animals with stronger swimming ability than plankton, such as small fish, shrimp, and squid
- Photosymbiosis
- A way of living in which an organism hosts algae inside or on its body and uses the nutrients produced by their photosynthesis
- Metabarcoding
- A method that reads the DNA of the organisms in a sample all at once to determine which species are present
NewsLab news
View More ↗ResearchResearch themes
The lab studies the ecology and physiological characteristics of phytoplankton, zooplankton, and micronekton that live widely in the ocean, aiming to clarify how marine ecosystems work and the roles these organisms play. Its research spans waters from the coast to the open ocean, covering adaptation to the environment, symbiosis, species diversity, and the dynamics of microplastics.
*Illustrative imageEnvironmental Adaptation of Zooplankton
The lab studies how zooplankton adapt to coastal environments that change greatly with the seasons and other factors. Focusing on dormancy in particular, it examines regional differences in its seasonality and in the factors that trigger it.
*Illustrative imageThe Fate of Microplastics in the Ocean
Plastics that enter the ocean are thought to break into fine fragments and eventually sink. The lab investigates their distribution in oceans around the world, from the sea surface to seafloor sediments, in order to clarify how they move.
*Illustrative imagePhotosymbiosis in Single-Celled Plankton
Some single-celled zooplankton live in symbiosis with phytoplankton and use the nutrients produced by photosynthesis. Focusing on planktonic foraminifera in particular, the lab investigates the role that photosymbiosis plays.
*Illustrative imageDiversity and Distribution of Zooplankton
Using metabarcoding, which can survey many species at once, the lab aims to understand the species diversity and distribution of zooplankton on a global scale. It is also developing the genetic data needed for this work.
MembersFaculty
The members of the Plankton Lab consist of faculty, doctoral and master's students, research trainees, and administrative and technical assistants.As of 2024
- Associate ProfessorYuichiro NishibePublications ↗
- Associate ProfessorHaruka TakagiPublications ↗
- LecturerJunya HiraiPublications ↗
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “Fish3511 - Flickr - NOAA Photo Library” Matt Wilson/Jay Clark, NOAA NMFS AFSC / Public domain (cropped)
- Environmental Adaptation of Zooplankton: “Fish3268 - Flickr - NOAA Photo Library” Matt Wilson/Jay Clark, NOAA NMFS AFSC / Public domain (cropped)
- The Fate of Microplastics in the Ocean: “Micro-plastiques sur la plage de Famara aux Canaries (Ifremer )” Emina Mamaca / CC BY 4.0 (cropped)
- Photosymbiosis in Single-Celled Plankton: “Orbulina universa bg- -f02-web” Haruka Takagi, Katsunori Kimoto, Tetsuichi Fujiki, Hiroaki Saito, Christiane Schmidt, Michal Kucera, Kazuyoshi Moriya / CC BY 4.0 (cropped)
- Diversity and Distribution of Zooplankton: “Hyperia” Uwe Kils / CC BY-SA 3.0 (cropped)
- Related lab (水圏生物環境学研究室): “Marine plankton - Dinoflagellat (Neoceratium horridum), diatom (Coscinodiscus radiatus) - 160x ( )” Picturepest / CC BY 2.0 (cropped)
- Related lab (国際協力分野(齊藤研究室)): “Calanus finmarchicus” Leïla Brunner / CC BY 4.0 (cropped)
- Related lab (微生物分野): “Hakuho Maru, Fremantle, 2019 (03)” Bahnfrend / CC BY-SA 4.0 (cropped)
- Related lab (
行動生態計測分野(坂本研究室)): “Loggerhead Sea Turtle (Caretta caretta) ( )” Cliff from Arlington, Virginia, USA / CC BY 2.0 (cropped)
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