Abstract
It is well documented that soil, organic matter, fertilizer and pesticides from agricultural lands are transported into adjacent streams with surface runoff changing the quality of those water ways (Neuman and Dudgeon, 2002). The eroded soil particles transported over the agricultural lands include nutrients, pesticides and their residuals. Therefore, soil erosion can cause both physical and chemical impacts in adjacent aquatic systems (Merrigton et al. 2002). Even a thin film of fine sediments in aquatic systems can eliminate or reduce the sensitive taxa population of macro invertebrates, such as Ephemeroptera and Plecoptera (Evans, 1996; Leeks, 1995). However, pesticides transportation is one of the severe impacts on aquatic ecosystem compared to other chemicals such as artificial fertilizers (Liess and Schulz, 1999; Merrigton et al. 2002) altering the dynamics of macro-benthos communities in streams.
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Sanjaya, H.L.K., Asanthi, H.B., Jayasinghe, U.A.D. (2015). Macro-benthos Diversity in a Headwater Stream Affected by Tea and Paddy Agricultural Runoff, Sri Lanka. In: Raju, N., Gossel, W., Ramanathan, A., Sudhakar, M. (eds) Management of Water, Energy and Bio-resources in the Era of Climate Change: Emerging Issues and Challenges. Springer, Cham. https://doi.org/10.1007/978-3-319-05969-3_17
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