Abstract
Pesticide inventory as information infrastructure consists of several databases for
ecological effect assessment and exposure assessment. In ecological effect assessment,
ecotoxicity database was constructed by collecting ecotoxicity data for aquatic
organisms. Laboratory ecotoxicity data was extrapolated to effect on actual ecosystem
using species sensitivity distribution. In exposure assessment, pesticide physicochemical
database, pesticide usage ratio database in each year, region, and application
way, database on pesticide environmental fate in paddy water, land use and river flow
databases were constructed. Temporal-spatial variability in predicted environmental
concentration in river water was analyzed using the constructed databases. Ecological
risk can be quantified by combination of species sensitivity distribution and temporalspatial
variability in predicted environmental concentration.
