Health Of The Humber River Watershed By Collecting And Analyzing Benthic Macro Invertebrates

1741 WordsOct 21, 20147 Pages
Abstract This study was done to assess the health of the Humber River watershed by collecting and analyzing benthic macro-invertebrates. It was predicted that most of the species collected would have high tolerances, and that the percentages of the benthic macro-invertebrates would mostly fall in the impaired or potentially impaired categories. Transects were measured out along the stream, and the D-net was held along the bottom to catch the invertebrates. Once 100 or more were caught, they were then counted and identified. The Hilsenhof Biotic Index was use to calculate the total tolerance of the organisms collected. The results showed that the distribution of species fell into the potentially impaired category, while the total tolerance was in the unimpaired range. This could be an indicator of a disturbance in the ecosystem that is affecting certain organisms more than others. The study was mostly consistent with the hypothesis. Introduction This study was done to determine the health of the Humber river watershed by testing the water quality. A watershed is a geographical area that drains precipitation and water sources into the same place. Watersheds are essential in supporting ecosystems around them and are vital to both plants and animals. The results of this study could be analyzed and used as an indicator of a healthy or an impaired ecosystem. There are four main reasons that this study was done. Firstly, the study was done to check the quality
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