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Populace pstruhů obecných v tocích jezer Čertova a Laka
HŮDA, Jan
In this thesis, almost ten years after the last large ichtyological survey, the populations of Brown trout (Salmo trutta L.) in two Šumava lakes (Laka and Čertovo) and adjacent streams were studied during spring and autumn electrofishing. The chemical parameters of local water were also sampled and compared with the past. The recovery of the studied area after an era of acidification was observed.

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