Rate of pollution degradation in stream depends on its self-purification ability. Intensity of self-purification capacity differs by various streams and except other factors it is notable affected by the character of the watercourse. Due to rugged watercourse, longer detention time and more favorable conditions for resurgence the self-purification capability of restored streams is supposed to be higher than the self-purification capability of technically modified streams. In this thesis the change of water quality indicators in technically modified (923 m) and restored (264 m) reach of Haraska river (South Moravia, the Czech Republic) was investigated. Using QUAL2K software (USEPA, 2008) the water quality model was created. Comparison of changes of water quality indicator values between technically modified and restored reach was also performed (Mann-Whitney-Wilcoxon test, a = 0,05), whereas statistically significant differences were observed only in inorganic and total phosphorus concentration.
| Identifer | oai:union.ndltd.org:nusl.cz/oai:invenio.nusl.cz:179385 |
| Date | January 2014 |
| Creators | Polák, Karel |
| Source Sets | Czech ETDs |
| Language | Czech |
| Detected Language | English |
| Type | info:eu-repo/semantics/masterThesis |
| Rights | info:eu-repo/semantics/restrictedAccess |
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