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Ohta Lab
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The lab uses models to predict how climate and living organisms interact.

AboutAbout the lab
Calculating how climate change affects living organisms
The Ohta Lab studies biosphere ecology, which examines the relationship between climate and living organisms.
Based on climate data such as temperature and precipitation, the lab builds models that calculate the distribution and growth of organisms.
So far, it has reproduced the water temperature of paddy fields where rice grows and the distribution of mosquitoes that carry infectious diseases.
The lab estimates how food production and the risk of infectious diseases change when the climate changes.
Key terms
- Biosphere ecology
- A field that studies communities of organisms together with their exchanges with climate, the atmosphere, and water
- Model
- A tool that expresses how nature works in mathematical equations, so that it can be reproduced or used to predict the future through calculation
- Vector mosquito
- A mosquito that carries pathogens such as those of malaria and dengue fever and transmits them to humans
ResearchResearch themes
The lab builds models that take climate data as input and calculate the distribution and growth of organisms. The research estimates, region by region, how climate change affects food production and the risk of infectious diseases.
*Illustrative imageClimate Change and Rice Farming
The lab has built a model that calculates paddy water temperature from climate data, and has investigated how the times and places in which rice can be safely planted shift as temperatures rise.
*Illustrative imageDistribution of Disease-Carrying Mosquitoes
By modeling how the mosquito life cycle relates to temperature and water conditions, the lab predicts seasonal increases and decreases in vector mosquitoes, such as Anopheles mosquitoes that carry malaria and Culex and Aedes albopictus mosquitoes in Japan.
MembersFaculty
- Shunji Ohta
VoicesStudent voices
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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: “Seawifs global biosphere” Provided by the SeaWiFS Project, Goddard Space Flight Center and ORBIMAGE / Public domain (cropped)
- Climate Change and Rice Farming: “Rice terraces, Bali” Vyacheslav Argenberg / CC BY 4.0 (cropped)
- Distribution of Disease-Carrying Mosquitoes: “AnophelesLarvaPhoto CDCHarryWeinburgh publicdomain” Harry Weinburgh, CDC / Public domain (cropped)
- Related lab (風間研究室): “Black-tailed gull” Bamse / CC BY-SA 3.0 (cropped)
- Related lab (平塚研究室): “CSIRO ScienceImage 3830 Tropical rainforest canopy near Cairns QLD” Willem van Aken, CSIRO / CC BY 3.0 (cropped)
- Related lab (山田研究室): “Lake Seliger. Ostashkov. View of Voroniy Island” Александр Байдуков / CC BY-SA 4.0 (cropped)
- Related lab (古山宣洋研究室): “Female Bunraku puppet Japan, early 20th century” Hiart / CC0 (cropped)
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