Reprofile/relandscape (before planting)
Overall effectiveness category No evidence found (no assessment)
Number of studies: 0
Background information and definitions
This action involves large-scale reprofiling or landscaping of sites that are later planted with marsh or swamp vegetation. This includes excavating large basins (>8 ha or 300 m diameter), moving soil/sediment from the site into levees/berms/impoundments, removing unnatural hills or levees, filling in deep depressions, and altering the elevation/slope of coastal areas. Generally, these interventions aim to restore wetland hydrology (how wet the soil is and when it is wet/flooded) by adjusting the ground surface relative to the water table or sea.
Caution: Landscaping often relies on heavy machinery, which can damage any existing vegetation, and churn or compress wetland soils (Campbell et al. 2002).
Related actions: Reprofile/relandscape, other than to complement planting; Raise water level before/after planting; Facilitate tidal exchange before/after planting; Create mounds or hollows before planting; Remove surface soil/sediment before planting.
Campbell D.A., Cole C.A. & Brooks R.P. (2002) A comparison of created and natural wetlands in Pennsylvania, USA. Wetlands Ecology and Management, 10, 41–49.