Fiscal Year
2014
Title
Current survey on biological and nonbiological environment of coastal area in southern Iwate
Project and Theme
Project 1. Study on ecological succession of fisheries ground
Representative Organization: Tohoku University
Theme5. Studies on the coastal environment and marine resources in the southern part of Iwate Prefecture| Representative person | Ryusuke Kado |
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| Organization | Kitasato University |
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| Department | School of Marine Biosciences |
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Research InformationPeriod and Interval2014/04/01 - 2015/03/31
Once a month
Research Area
Okirai Bay, Ofunato Bay
CategoryField survey
OverviewWe examine seasonal variations in water environment, and phyto- and zooplankton in Okirai Bay and Ofunato Bay to estimate the impact of the 2011 disater and monitor its recovery process.
Overview of the Observation
Research Point Table
| Polygon | | Name | Okirai Bay |
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| Coordinates | 39.083357,141.882825/39.127049,141.815534/39.086555,141.790815/39.0631,141.880079 |
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| Name | Ofunato Bay |
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| Coordinates | 39.019369,141.763349/38.989488,141.741376/39.02577,141.70979/39.073763,141.719404/39.072696,141.735883/39.026837,141.735883 |
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Results and Future PlanWater environment:
In Okirai Bay, no large differences were found in pH, COD, DO, DO% saturation, TN and transparency between pre- and post-disaster periods.
In Ofunato Bay, the decreases in nutrients and the increase in chlorophyll a concentration were observed after the disaster.
Zooplankton:
In Okirai Bay, the jellyfish Cladonema pacificum increased explosively.
Investigation Item and Data Acquisition
| Investigation Item | Data Acquisition |
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| Water environment | Temperature, salinity, pH, COD, DO, DO% saturation, TN, transparency, in vivo fluorescence of Chl-a, and nutrients |
| Phyto- and zooplankton | Phyto- and zooplankton community composition |
Reference
Related Observation Plan
Related Observation Data
Person in charge of Investigation
| Representative person | Ryusuke Kado |
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| Organization | Kitasato University |
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| Department | School of Marine Biosciences |
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| Representative person | Nobuyoshi Nanba |
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| Organization | Kitasato University |
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| Department | School of Marine Biosciences |
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| Fiscal Year | 2014 |
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| Organization | Kitasato University |
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| Category | Field survey |
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| Research Area | South Sanriku |
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| Discipline | Ocean physics -> Water temperature
Ocean physics -> Salinity
Ocean physics -> Transparency / Turbidity
Ocean chemistry -> Salinity
Ocean chemistry -> Dissolved oxygen
Ocean chemistry -> Nutrients
Ocean chemistry -> pH
Ocean environment -> pH
Ocean environment -> Chemical oxygen demand (COD)
Ocean environment -> Nutrients
Ocean environment -> Transparency
Ocean environment -> Others
Ocean environment -> Seawater
Ocean biology / Ocean ecology -> Ecology
Ocean biology / Ocean ecology -> Plankton
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