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An elevated boardwalk is a form of controlled
access. Boardwalks enable large numbers of people to visit dune
areas while minimizing the stress on dune surfaces.
Elevated boardwalks allow
natural dune processes to continue by permitting the natural movement
of sand under the structure.
Elevated boardwalks may
also permit natural vegetation to grow under the boardwalk, particularly
if gaps in the boardwalk allow light to reach the surface underneath.
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The boardwalk through Rosy Mound Natural Area (Ottawa
County, MI) allows people to walk through the dunes without damaging
dune surfaces. (June 2004) |