Grassed waterways are often installed to reduce water runoff, prevent scouring and encourage sediment deposition from erosion prone land. A grassed waterway is usually situated on a natural flow pathway and is the means of convergence for many smaller water flow pathways. To reduce the on-site and off-site impacts of soil erosion, it is vital that mitigation measures are studied and improved. Therefore, this research focuses on the effects of grass roots+shoots and of grass roots only on flow velocity, turbidity and soil loss. The relative contribution of above ground vs below ground traits in controlling erosion can then be determined. The species used in this study are festulolium cv prior, festulolium bx511 and a mixture of lolium perenne and festuca rubra which is conventionally used in the UK. The knowledge gained from this research can be used and applied to other grassed soil erosion mitigation features such as in field and riparian buffer strips, swales as well as grassed waterways. When at my poster you can learn more about what a grassed waterway is and how it can control soil erosion. Furthermore, you can also learn about the grass species used and about specific plant traits, above ground or below ground, which influence soil erosion mitigation.
Explain how vegetation can prevent soil loss as compared to non vegetated soil
Determine plant traits, both belowground and aboveground, which are important for soil erosion control.
Understand what a grassed waterway is and how it can prevent soil erosion.