6533b7d4fe1ef96bd12629d9
RESEARCH PRODUCT
Assessment of the changes of COD and color in rivers of Latvia during the last twenty years
Maris KlavinsElga Apsitesubject
lcsh:GE1-350geographygeography.geographical_feature_categoryChemical oxygen demandDrainage basinWater colorSeasonalitymedicine.diseaseEnvironmental protectionmedicinePeriod (geology)Environmental sciencePhysical geographyWater qualitylcsh:Environmental sciencesGeneral Environmental Sciencedescription
Analysis of long-term records of the concentrations of water color and chemical oxygen demand for nine river sites in Latvia is reported. The period of observations lasted for the last 20 years. Characteristic features of data include non-normal distributions, serial correlation, seasonality and presence of mostly significant downward trends. In Latvia, the main water quality changes could be explained by the changes of anthropogenic impact and the type of catchment management over the last 20 years.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1998-07-01 | Environment International |