Research on Fishery resources and environmental condition on fishery ground in the Natori River

Fiscal Year

2013

Title

Research on Fishery resources and environmental condition on fishery ground in the Natori River

Project and Theme

Project 1. Study on ecological succession of fisheries ground
Representative Organization: Tohoku University
Theme3. Research on the coastal fisheries resources and the tidal flat faunas off Miyagi Prefecture
Representative personSatoshi Katayama
OrganizationTohoku University
DepartmentGraduate School of Agricultural Science

Research Information

Period and Interval
2013/04/01 - 2014/03/31
Once a month
Research Area
Natori River
Category
Field survey
Overview
1. Fishery resources bivalves ; Ruditapes philippinarum and Corbicula japonica, are collected using pumping system in Natori River. Individuals density of bivalves is calculated and shell size compositions are analyzed.2. Surveys on the environmental conditions; water temperature and salinity, are conducted in the Natori River. Grain size composition, organic carbon and nitrogen contents and stable isotope ratios of the sediments are analyzed to evaluate the condition of fishery ground.3. Growth experiments on bivalve using marking and caging method are conducted in Natori River to estimate production rate of bivalve.

Investigation Item and Data Acquisition

Investigation ItemData Acquisition
Survey on distribution of bivalve; Ruditapes philippinarumCatch number, shell length and body weight of bivalve
Survey on distribution of bivalve; Corbicula japonicaCatch number, shell length and body weight of bivalve
Survey on environmental conditionsWater temperature and salinity
Survey on bottom conditionsGrain size, silt percentage, organic carbon and nitrogen content, carbon and nitrogen stable isotope ratios of sediment
Field experiments on growth of bivalveGrowth rate, carbon and nitrogen isotopes of bivalve

Reference

Related Observation Result
FY2013 Research on Fishery resources and environmental condition on fishery ground in the Natori River

Person in charge of Investigation

Representative personKinuko Ito
OrganizationTohoku University
DepartmentGraduate School of Agricultural Science

Keywords

Fiscal Year2013
OrganizationTohoku University
CategoryField survey
Research AreaIshinomaki Bay
DisciplineOcean physics -> Water temperature
Ocean physics -> Salinity
Ocean chemistry -> ARRAY(0x56d1d64)
Ocean biology / Ocean ecology -> Biomass
Ocean biology / Ocean ecology -> Ecology
Ocean biology / Ocean ecology -> Mollusks
Ocean biology / Ocean ecology -> Others
Topography / Geology / Geophysics -> Bottom sediment
Topography / Geology / Geophysics -> Marine sediments