Eutrophication of Lake Tasaul, Romania-proposals for rehabilitation.
Lake Tasaul on the Black Sea coast is highly eutrophic, but not strongly contaminated (heavy metals, PAHs, and organochlorine pesticides). Cyanophytes dominate phytoplankton by 67-94% and form frequent algal blooms. High primary production (up to 270 mg C(ass)/m(2).h) and algal biomass (maximum chlorophyll a concentration 417 microg/l) may be controlled by light, as Secchi depth is often below 1 m. The main tributary, Casimcea River, provides high quantities of suspended matter and about 3 tons TP/year and 660 tons TN/year. Based on chemical and biological analysis as well as fishery investigations, we provide recommendations for Lake Tasaul rehabilitation.
Alexandrov
Mihaela Laurenta
ML
National Institute for Marine Research and Development, Grigore Antipa, Constanta, Romania. laurenta@alpha.rmri.ro
Bloesch
Jürg
J
D005068:Eutrophication; D005618:Fresh Water / Q000737:chemistry*; D009584:Nitrogen / Q000737:chemistry; D010758:Phosphorus / Q000737:chemistry; D012383:Romania; D014874:Water Pollutants, Chemical / Q000737:chemistry*; D014877:Water Pollution, Chemical / Q000517:prevention & control*
D014874:Water Pollutants, Chemical; D010758:Phosphorus; D009584:Nitrogen