 ISSN 0235-7224 ISSN 2029-0586 (online) |
2007 m. Nr. 2 Lake Žuvintas water quality analysis employing PCLake model
Since 1937, the reservation regime has been established in Lake Žuvintas. Nevertheless the basin of the lake was reorganized for the requirements of agriculture and fishing industry. The reorganization of the basin and natural processes have resulted in an even more intensive eutrophication and overgrowth of the lake by submerged vegetation. The objective of the present study was to estimate the impact of hydrological regime and nutrient load on the water quality and ecosystem structure of the lake. The shallow, not stratified lake eutrophication model PCLake was used. The model suggests that the best measure to increase Lake Žuvintas water quality and to stop its overgrowth is to reduce pollution by nutrients and stabilize the water level. The lower nutrient load stabilizes the amount of submerged vegetation and results in lower concentrations of nitrogen and phosphorus in the lake water and in the top layer of sediments. Keywords: eutrophication, water quality, modeling |
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