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THE RIPARIAN ZONE Riparian zones typically consist of vegetated corridors adjacent to stream channels. These areas are considered effective natural barriers, which prevent agricultural pollution from being exported and contaminating the larger ecosystem. Part of our study consists of determining how well the riparian zone functions at removing agricultural nutrients (nitrogen and phosphorus) and pesticides. The riparian zone is situated on the riverbanks. Its purpose is to naturally maintain the health of the river. It does this by extracting agricultural waste and other types of pollution before they reach the river. In the Logan rivers case the removal of the Riparian zone as well as broader vegetation has damaged the catchments and provided opportunities for weed infestations and bank erosion.
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