Research on relations between environment and cultivation in Onagawa Bay

Fiscal Year

2016

Title

Research on relations between environment and cultivation in Onagawa Bay

Project and Theme

Project 1. Study on ecological succession of fisheries ground
Representative Organization: Tohoku University
Theme1. Environmental monitoring and development of a marine habitat map for the coastal ecosystem of Onagawa Bay
Representative personKenji Kaneko
OrganizationTohoku University
DepartmentGraduate School of Agricultural Science
Theme1. Environmental monitoring and development of a marine habitat map for the coastal ecosystem of Onagawa Bay
Representative personAkihiro Kijima
OrganizationTohoku University
DepartmentGraduate School of Agricultural Science

Research Information

Period and Interval
2016/04/01 - 2017/03/31
fifth a month
Research Area
Onagawa Bay
Category
Field survey, Mooring system(Observation buoy)
Overview
1 To monitor environments of sea area in Onagawa Bay 2 To monitor growths of cultivated scallops and oysters 3 To reveal the relations between the environment and the cultivation

Overview of the Observation

Research Point Table
Point
NameSt.1
Coordinates38.44123,141.4586
RemarksOnagawa
NameSt.11
Coordinates38.40182,141.4749
RemarksOnagawa
NameSt.12
Coordinates38.41193,141.48242
RemarksOnagawa
NameSt.16
Coordinates38.43588,141.4777
RemarksOnagawa
NameSt.17
Coordinates38.43543,141.48842
RemarksOnagawa
NameSt.2
Coordinates38.4346,141.46818
RemarksOnagawa
NameSt.3
Coordinates38.4295,141.4788
RemarksOnagawa
NameSt.4
Coordinates38.42365,141.49153
RemarksOnagawa
NameSt.5
Coordinates38.42363,141.50493
RemarksOnagawa
NameSt.6
Coordinates38.4237,141.52158
RemarksOnagawa
NameSt.7
Coordinates38.42398,141.53778
RemarksOnagawa
NameSt.8
Coordinates38.42397,141.56317
RemarksOnagawa
Results and Future Plan
Benthos community is recovering from the decrease of population and change of species composition by the tsunami in Onagawa Bay, but high composition of silt and clay in the sediment is continuing. Moreover, there is a possibility that rising of heavy metal concentrations might be caused by land formation work.

Investigation Item and Data Acquisition

Investigation ItemData Acquisition
Water qualityTemperature, Salinity, DO, Nutrient
Sediment qualityGrain size composition, COD, Toxic substance
OrganismPhytoplankton, Zooplankton, Macrobenthos
Cultivated organismScallop, Oyster, Ascidiacea

Reference

Related Observation Plan
FY2016 Research on relations between environment and cultivation in Onagawa Bay

Person in charge of Investigation

Representative personKenji Kaneko
OrganizationTohoku University
DepartmentGraduate School of Agricultural Science

Keywords

Fiscal Year2016
OrganizationTohoku University
CategoryField survey
Mooring system (Observation buoy)
Research AreaSouth Sanriku
DisciplineOcean 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 -> Heavy metals
Ocean environment -> Oil
Ocean environment -> Seawater
Ocean environment -> Suspended solids
Ocean environment -> Sediment
Ocean environment -> Creature
Ocean biology / Ocean ecology -> Arthropods
Ocean biology / Ocean ecology -> Mollusks
Ocean biology / Ocean ecology -> Plankton
Topography / Geology / Geophysics -> Bottom sediment
Topography / Geology / Geophysics -> Marine sediments