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The ichthyofauna of the regulated section of the Nida River (The Upper Wkra) in the commune of Nidzica

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Skrzypczak A., Furgala-Selezniow G., Mamcarz A., Gozdziejewska A., Gierej A.

Polish Journal of Natural Sciences

2011

tom 26

nr 2

The purpose of this study has been to characterize the ichthyofauna of the Upper Wkra River during the initial stage of the implementation and execution of revitalization of the Nida River in the commune of Nidzica. The study covered a nearly 5-km-long section of river flowing across the commune of Nidzica. Four sites of control catches were localized between the administrative border to the town of Nidzica and a water-raising fixed weir (h=1.40 m) in the village called Borowy Młyn. In the fish assemblage, dominated by three- and ninespined stickleback, nine species in total were observed. By referring to the available research results, it can be concluded that no significant quantitative or qualitative changes occurred in the structure of the inchthyofauna from 2001 to 2008. One of the factors which limit the process of natural regeneration of the fish population is the fact that the analyzed section of the river is cut off from the remaining part of the Wkra River and its tributaries.

Ograniczanie wyników

1 Polish Journal of Natural Sciences

1 Furgala-Selezniow G.

1 Gierej A.

1 Gozdziejewska A.

1 Mamcarz A.

1 Skrzypczak A.

1 2011

Wyniki wyszukiwania

The ichthyofauna of the regulated section of the Nida River (The Upper Wkra) in the commune of Nidzica