Fiscal Year
2013
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 PrefectureRepresentative 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 Interval2013/04/01 - 2014/03/31
Once a month
Research Area
Okirai Bay, Ofunato Bay
CategoryField survey
OverviewWe examined seasonal variations in water environment, and phyto- and zooplankton in Okirai Bay and Ofunato Bay to estimate the impact of the 2011 disaster and monitor its recovery process. In addition, we investigated bottom sediments of Okirai Bay in summer.
Overview of the Observation
Research Point Map & Track Chart Map & Point List
Results and Future PlanWater environment:
After the 2011 disaster, the increase in bottom DO and the decrease in P/Si were observed in Ofunato Bay.
Bottom sediments:
In Okirai Bay, no differences were found in mud content, ignition loss, COD and total sulfide between the pre- and post-disaster periods.
Zooplankton:
After the disaster, the pelagic jellyfish Aglantha digitale increased in the head of Ofunato Bay.
Investigation Item and Data Acquisition
Investigation Item | Data Acquisition |
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Water environment | Temperature, salinity, DO, in vivo fluorescence of Chl-a, nutrients |
Phyto- and zooplankton | Phyto- and zooplankton community composition |
Bottom sediments | Mud content, ignition loss, COD, total sulfide |
Reference
Related Observation Plan
Related Observation Data
Person in charge of Investigation
Representative person | Ryusuke Kado |
Organization | Kitasato University |
Department | School of Marine Biosciences |
Representative person | Nobuyoshi Nanba |
Organization | Kitasato University |
Department | School of Marine Biosciences |
Keywords
Fiscal Year | 2013 |
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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 chemistry -> Salinity
Ocean chemistry -> Dissolved oxygen
Ocean chemistry -> Nutrients
Ocean environment -> Chemical oxygen demand (COD)
Ocean environment -> Nutrients
Ocean environment -> ARRAY(0x554a7fc)
Ocean biology / Ocean ecology -> Plankton
Topography / Geology / Geophysics -> Bottom sediment
Topography / Geology / Geophysics -> Others
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