Add upland topsoil before/after planting trees/shrubs: freshwater wetlands
Overall effectiveness category No evidence found (no assessment)
Number of studies: 0
Background information and definitions
Topsoil can be a source of soil organic matter and help to improve water retention (Bruland & Richardson 2004). This might benefit wetland vegetation, particularly when creating new swamps. Topsoil may often be added to complement planting (current intervention) rather than without planting: upland soil will probably not contain seeds or fragments of swamp plants. Caution: Topsoil may contain seeds or fragments of undesirable vegetation.
Bruland G.L. & Richardson C.J. (2004) Hydrologic gradients and topsoil additions affect soil properties of Virginia created wetlands. Soil Science Society of America Journal, 68, 2069–2077.