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Sea-level rise threatens coastal salt-marshes and mangrove forests around the world, and a key determinant of coastal wetland vulnerability is whether its surface elevation can keep pace with rising sea level. Globally, a large data gap exists because wetland surface and shallow subsurface processes remain unaccounted for by traditional vulnerability assessments using tide gauges. The low-cost, simple, high-precision rod surface-elevation table-marker horizon (RSET-MH) method fills this critical data gap. [Source: Nature Climate Change]
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