Acta Ichthyologica et Piscatoria 19(2): 55-73, doi: 10.3750/AIP1989.19.2.06
Factors determining the fish coexistence and the ichthyocenotic trophic relations in Włocławek Dam Reservoir, Poland
expand article infoS. Wielgosz
Open Access
In the work feeding interrelations of the main fishes feeding on benthos, in Włocławek dam reservoir, was estimated and the fishes growth rate and condition was compared. A block diagram of the trophic web, for the most numerous fish species, such as: (Abramis brama (L.); Rutlus rutilus (L.), Blica björkna (L.), Stizostedion lucioperca (L.), Perca fjuviatilis (L.), Gymnocephalus cernus (L.), Gobio gobio (L.) was estimated. Material for analysis was collected from 1982 to 1984, between April and October, every two weeks (1982), every month 1984 and with seasonal intervals (1983) in the lowland dam reservoir at the Vistula River around Włocławek.