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Journal of Emerging Trends in Educational Research and Policy Studies (JETERAPS) (Vol 1 No 1)
| Abstract: The impact of pollution on Umwindisi and Mukuvisi rivers was determined using Riffle fauna as biological indicators to monitor water quality and determine the level of pollution using micro-benthic organisms as indicators of pollution level. There is value addition to the existing methods of chemical analysis of water. The study is important in developing a sound management policy for water quality and effluent disposal.as well as research in aquatic environments. The abundance and diversity of the riffle fauna in the unpolluted Umwindisi river was compared with that of the polluted Mukuvisi from October 2001 to March 2002. The sampling sites on the two rivers were strategically located. Temperature, pH. Conductivity, dissolved oxygen, ammonia concentration and biological oxygen demand were determined. The abundance of collected riffle fauna was done by microscopy and classified. Data was analysed using MINITAB - and the Shannon Weiner diversity index. Riffle fauna abundance and diversity was high in Umwindisi than in Mukuvisi indicating high pollution impact in the later river. |
| Keywords: biological indicators, riffle fauna, water pollution, industrial discharge, species diversity and water quality |
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