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3608499 
Journal Article 
Phytoplankton-nutrient relationships in years with various water levels in the Pasleka River in the vicinity of the hydroelectric power station (North-east Poland) 
Zebek, E 
2013 
1 
Russian Journal of Ecology
ISSN: 1067-4136
EISSN: 1608-3334 
Springer-Verlag 
New York 
44 
6 
492-499 
English 
WOS:000326717400007 
Relationships between abundance of basic net phytoplankton taxonomic groups (cyanobacteria, diatoms, and chlorophytes) and nutrient concentrations in water were studied on the PasA (TM) ka River in years with varied water levels. In high water level conditions, large amounts of orthophosphates and total nitrogen from the catchment could favor development of cyanobacteria and chlorophytes. The species could be allochthonic. At low water levels, the factor stimulating phytoplankton development could be nutrients coming from mineralization of accumulated organic matter. The highest nutrient concentrations could favor diatom development. In such conditions, dominant taxa were autochthonic. In terms of numbers, F. capucina was dominant, and in terms of biomass-genus Spirogyra sp. It could come from plant periphyton inhabiting the concrete drops of the dam included in the river's development in the vicinity of the hydroelectric power station. 
net phytoplankton; nutrients; water level; river; hydroelectric power station