Diatoms in the biological assessment of the ecological state of waters using the Czarna Staszowska River as an example
Open Access
- 1 June 2015
- journal article
- research article
- Published by Uniwersytet Gdanski in Oceanological and Hydrobiological Studies
- Vol. 44 (2), 254-266
- https://doi.org/10.1515/ohs-2015-0024
Abstract
The object of the present research was the Czarna Staszowska River, which is located in south-eastern Poland and which is a left tributary of the upper Vistula River. The length of the river is 61 km and its sources are situated in the Swietokrzyskie Mountains. The river flows across an area covered by Mesozoic rocks, mostly carbonate and sulfate ones. The upper and middle course of the river is of natural character, while increased pollution occurs downstream of the Chancza Reservoir. In the present study, the water quality of the Czarna Staszowska is investigated in the pure and polluted sections using diatom indices, such as IO - Diatom Index, IPS - Specific Pollution Sensitivity Index, GDI - Generic Diatom Index and TDI - Trophic Diatom Index. In the four river sections distinguished on the basis of the hydrology and the degree of water pollution, the occurrence of different indicator species was determined in the respective diatom assemblages. Indicator species were determined, i.e. characteristic of oligosaprobic and mesosaprobic, limestone and silicon-rich waters. Also taxa indicating an increased trophic status of the river (occurring in its polluted sections) were identified.Keywords
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