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Table 2

Densities of unionids in selected local studies.

Species Density (specimens/m2)   

  Douda et al. (2015) Beran (2015) Peterka (2010) Peterka and Čech (2005)
U. crassus   0.03–0.26 0–0.07  
U. pictorum 0–0.4 0.02–0.58 0.17–1.5 0.0003–0.008
U. tumidus     0.14–2.6 0–0.006
A. anatina 0.4–8.8 0.01–0.83 0.38–1.8 0.0003–0.018
A. cygnea     0–0.1 0–0.001
P. complanata 0.4–2.8 0.01–0.02 0.06–0.21

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