Assessment of the Trophic Status by Monitoring of Reservoir’s Water Quality

作     者：Milka M.Vidovic Marko N.Rodic Marija U.Vidovic Ivana S.Trajkovic Sanja Z.Jovanic 

作者机构：Department for Ecology and TechnoeconomicsThe Institute of ChemistryTechnology and MetallurgyUniversity of BelgradeBelgradeSerbia Faculty of GeographyUniversity of BelgradeBelgradeSerbia School of Electrical EngineeringUniversity of BelgradeBelgradeSerbia 

出 版 物：《Journal of Water Resource and Protection》 (水资源与保护（英文）)

年 卷 期：2015年第7卷第1期

页      面：1-13页

学科分类：1002[医学-临床医学] 100214[医学-肿瘤学] 10[医学] 

基　　金：supported by the Ministry of Education Science and Technological Development of the Republic of Serbia Project OI 176018 

主　　题：Monitoring Reservoir Trophic State Index Eutrophication Cyanobacteria 

摘      要：Continuous long-term monitoring of aquatic systems is important for understanding their complete evolution in order to monitor changes in the trophic status and water quality. The continuous monitoring during a period of 20 years, by sampling once a month at two locations, the water quality of reservoir “Grliste, which is used for the water supplying town Zajecar (Eastern Serbia), is observed and developmental stages in the life of the reservoir were determinated. It should be noted that the obtained results were used also in the purpose of finding a cause of cyanobacteria bloom, as a consequence of algal production. Limiting factors of algal production usually were nitrogen and phosphorus, however, in this study, obtained results of subtraction between trophic state index, calculated through total chlorophyll a (TSIChl-a) and trophic state index, calculated through total phosphorus (TSITP), indicated that limiting factor of algal production was light. On the basis of the concentrations of dissolved oxygen (DO), total phosphorus (TP) and chlorophyll a (Chl-a) in the surface and in the bottom, it was concluded that the reservoir passed through four development phases during the examined period. Results of long-term monitoring showed that in the first years after the formation of the reservoir, the highest trophicity was detected (hypereutrophic status), but later the reservoir mostly maintained eutrophic status.