Ecological impact of a dam on benthic macroinvertebrates in montane rivers of lower Silesia

• Autorzy: Rybak J. , Sadłek W.
• Języki publikacji: EN

Abstrakty

EN

The ecological impact of dams on benthic macroinvertebrates found in three small montane rivers in south-western Poland was assessed. The macroinvertebrates lived in upstream and downstream zones as well as in the river free of any anthropogenic impact. We sampled 14 543 macroinvertebrate individuals in order to show how they respond to an impounding reservoir. We employed biotic indices (BMWP-PL, ASPT) to prove their usefulness as the indicators of anthropogenic perturbation. The diversity of macroinvertebrate species above dams and in the "natural" river was significantly higher than below dams. The chironomids and dipterans dominated downstream. However, the density of Ephemeroptera, Trichoptera and Crustacea was significantly reduced downstream. The analysis of Simpson's diversity index also proved the above results.

Słowa kluczowe

EN

rivers; dams; ecological impacts; Lower Silesia; macroinvertebrates

PL

zagrożenia ekologiczne; rzeki; zapory; tamy; makrozobentos

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Environment Protection Engineering
• Rocznik: 2010
• Tom: Vol. 36, nr 2
• Strony: 143--151
• Opis fizyczny: bibliogr. 16 poz.

Twórcy

autor

Rybak J.

autor

Sadłek W.

• Institute of Environmental Protection Engineering, Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław,

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