Figure 2. Coastal ecosystem migration is blocked by a road with a revetment (a sloping structure on the shore to absorb wave energy). Panel A shows current conditions in an idealized coastal profile. Panel B shows how ecosystems migrate inland as sea level rises. Panel C shows how migration can be blocked by a barrier, such as a road, trapping ecosystems between rising water and the barrier and reducing or eliminating them.
Credit: W. Gray IAN Image Library (ian.umces.edu/imagelibrary/)