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Table 1

Measured abiotic parameters (average values) in the rheolimnic and limnetic zones of the Włocławek Dam Reservoir.

Parameters Rheolimnic zone Limnetic zone
Depth (m) 4.6 10.7
Secchi depth * 0.8 1.0
Bottom sediments    
Water content (%) * 60.0 78.7
Organic matter content (%)* 5.8 11.4

statistically significant difference

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