The Impact Of River Macroinvertebrates On The Chemical...

Literature Review The main purpose of this literature review is to collate information on how river macroinvertebrates are collected and how the concentrations of phosphorus, nitrogen, ammonia or BOD in the water relate to the families of macroinvertebrates present. Different methods have been used to help collect and identify macroinvertebrates and monitor pollution levels. This review mainly focuses on the kick sampling technique for collecting macroinvertebrates. It then describes the methods that are used to collect the levels of ammonia, phosphorus, BOD and nitrogen. Foy et al (2001) wished to access the effectiveness of regulatory controls on farm pollution using chemical and biological indices of water quality and pollution statistics. The water quality was tested in 42 streams in the Colebrooke and Upper Bann catchments in Northern Ireland during 1990-1998. This was a large timescale therefore more results were collaborated. The method used to collect the samples of invertebrates was kick sampling, these samples were then taken back to the laboratory to identify them. Using the BMWP scoring system a score was then given to the macroinvertebrates, relating to how organic pollution had affected them, with 1 being tolerant and 10 being highly sensitive. To know the pollution statistics there was recorded incidents on farm pollution assessed between 1987 and 1997, this was from a relational farm pollution database. The measurements that Foy et al (2001) took wereShow MoreRelatedFreshwater Is A Vital Necessity Of Life Essay1372 Words   |  6 Pag esthan 1% of the Earth’s surface water (Johnson et al., 2001). Rivers comprise 0.00009 % of all the freshwater on the planet (Wetzel, 2001). They are an important source of freshwater and essential to the wellbeing of humankind and other organisms, and have been used as extensive water sources by most forms of life. However, due to their exploitation as freshwater sources, few rivers can be found in their natural conditions due to pollution (Ngoye and Machina, 2004). Rivers form parts of aquatic ecosystemsRead MoreLand Use ( 7 )1751 Words   |  8 PagesLand use (7) Catchment is important for fish, macroinvertebrate and algal biomass, biotic diversity, instream water quality, and instream nutrients. Removal of forest cover in catchments is land use impacts on streams. Urbanization and land use for intensive cropping and irrigated agriculture has negative impact on stream ecosystem health, where ecosystem health is defined in terms of ecological integrity. The capacity of the river or stream to maintain ecosystem structure and function. In urban