Sometimes it works really well; in other cases, it is simply ineffective as a dune restoration mechanism. The destabilization of the sands dunes will, sooner or later, destroy our favorite beaches and our childhood summer memories. There's still time to change the way we care for dunes. Let the plants and the local animals do their job, avoid crossing the dune, and protest against the construction of new houses in sand dune systems.
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The importance of sand dunes to the coastline Environment. Sand dunes are natural barriers against powerful waves and windy storms. Beach dunes are also a rich habitat for specific vegetation and wildlife. But again, the human touch is always present. If the wind blows offshore, it transfers sand from the dune down to the beach.
Sand Moving Back and Forth This everlasting replenishment process works naturally. In the short term, these artificial sand hills will be destroyed by the elements. Dune stabilisation is applicable on all coastal types where natural dunes occur.
This is especially the case on moderately exposed to exposed coasts with perpendicular to very oblique wave wind attacks. There is ample evidence for the effectiveness of sand fences to promote dune growth in periods of strong onshore winds, provided these are not accompanied by high water levels and waves.
Several examples show that sand fences can also increase the stability of the dune belt during heavy storms [4]. Artificial dunes are also used as a sea defence structure, see e.
Climate adaptation measures for the coastal zone. Mangor, K. Shoreline management guidelines. Log in. Page Discussion. Read View source View history. Jump to: navigation , search. Coastal Engineering Manual.
Part V, Ch. Coastal Engineering for Environmental Enhancement pp. Kystinspektoratet Evaluating the geomorphic response from sand fences on dunes impacted by hurricanes. If you live near a sand dune along the lake, here are two simple ways to protect the coast:. One way to restore our dunes is through beach nourishment.
This process adds large amounts of sand back to the beach to minimize the effects of erosion. At Superior Groundcover, our sand blower trucks allow us to install sand as well as small aggregates for residential and commercial areas throughout Michigan. Our slinger truck fleet is able to install sand, aggregate, and soil up to 80 feet from the truck. Dune restoration presents its own challenges unique to other kinds of erosion control along the beach. For example, the simple act of bringing trucks and equipment on or near the dune to restore it may damage or destroy the environment and end up doing more harm than good.
With our sand blower trucks in particular, we can restore the dune from a safe distance, up to — feet, and still install the sand with precision.
Dune grass and other vegetation can help stabilize the shoreline. The roots of these plants will absorb rainwater and help stabilize the sand, lessening the effects of erosion. Hydroseed can even be installed in certain areas along the Lake Michigan shoreline.
However, non-native plants may be used if necessary. Some native plants typically used for dune stabilization in Michigan include:. Preserving and restoring our dunes not only protects our environment, but it also protects our way of life. Dune restoration is not without its flaws. Whether you chose beach nourishment or added vegetation, dune restoration can be an expensive process, and the results are only temporary at best. Dune restoration done poorly can kill native species and accelerate erosion even further.
Restored sand dunes with native vegetation can help prevent runoff. The plants will absorb rainwater and other precipitation, preventing flooding and runoff. Sand dunes are a natural force against coastal erosion. They protect the coast against high waves and storms, and they adapt naturally to the wind and water in a way that disperses energy and protects the coastline. Remember, dunes are dynamic by nature.
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