Fiscal Year
2013
Title
Ecological investigation on ayu population at the Sanriku, after the Great East Japan Earthquake
Project and Theme
Project 2. Studies on the Mechanisms of Marine Ecosystem Change
Representative Organization: Atmosphere and Ocean Research Institute, The University of Tokyo
Theme2. Study on the disruption and subsequent recovery process in the ecosystem suffered from earthquake and tsunami| Representative person | Tomohiko Kawamura |
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| Organization | Atmosphere and Ocean Research Institute, The University of Tokyo |
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| Department | International Coastal Research Center, Coastal Ecosystem Restoration |
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Research InformationPeriod and Interval2013/04/01 - 2014/03/31
once or twice a month
Research Area
CategoryField survey
OverviewTo reveal the effect of the disturbance by the Great East Japan Earthquake on resources of ayu, ecological investigations are performed in the river located in Iwate prefecture. Ascending population of ayu and downstream larvae are collected from April to August, and from September to March, respectively. Riveline conditions including water temperature and volume flow rate is also collected.
Investigation Item and Data Acquisition
| Investigation Item | Data Acquisition |
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| Collection of ascending population | Body size, Body weight, Age, Hatching date, Ascending date, Growth rate, Estimated number of individuals |
| Collection of downstream larvae | Body size, Estimated number of hatching, Estimated spawning period |
| Environmental measurements | Water temperature, Salinity, Current speed, Volumetric flow rate |
Person in charge of Investigation
| Representative person | Tatsuya Kawakami |
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| Organization | Atmosphere and Ocean Research Institute, The University of Tokyo |
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| Department | International Coastal Research Center, Coastal Conservation |
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| Fiscal Year | 2013 |
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| Organization | Atmosphere and Ocean Research Institute, The University of Tokyo |
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| Category | Field survey |
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