Suplement CXXIII
Ciepielewski W. 1981. Population of pike (Esox lucius L.) in pond type lake Warniak in 1969-1978. Ekol. pol. 29: 35-51. 6. SUMMARY In 1969-1978 observations were carried on pike population intensively exploited in the shallow Lake Warniak of natural pond type. Special seine net was constructed. The catches were made three times in autumn of… czytaj dalej »