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Soft Engineering Use of ecological principles and practices to reduce erosion and achieve the stabilization and safety of shorelines and the area surrounding rivers, while enhancing habitat, improving aesthetics, and saving money.
How do the various soft engineering methods protect the coastline? What is the thing/object you see in the picture. How does it protect the coast? Does it reduces wave energy?
Stabilize Sand Dunes Sand Dunes : A ridge of sand piled up by wind on the coast. Why do we need to protect a dune? What does a dune protect? It provides a habitat for many animals including migratory birds. Roads and houses against coastal erosion and flooding.
Stabilize Sand Dunes How do we stabilize a dune? What is a dune made up of? Planting vegetation on the dune so that the roots can hold on to the sand. Sand
Protecting MANGROVES Mangroves: A type of natural vegetation whereby plants are well adapted to grow in saline conditions. What are some qualities of a mangrove? Why do we need to protect a mangrove to protect a coast? Plants have prop roots that can help in trapping and holding sediments It can reduce the impacts of wave erosion by trapping sand It encourages the extension of the coastline as the mangrove grows.
Prop Roots Beginning Signs of Coastal Extension
Beach Nourishment Adding of large amounts of sand to a beach Type A Type B Importing foreign sand Using sand from the same beach, just from a different section. What are some things that needs to be considered when importing foreign sand? If a beach is supplemented by its own materials, what is the beach likely to be experiencing? Grain Size Long Term Cost