Study

Vegetation and environmental conditions in recently restored wetlands in the prairie pothole region of the USA. Vegetatio (now Plant Ecology)

  • Published source details Galatowitsch S.M. & van der Valk A.G. (1996) Vegetation and environmental conditions in recently restored wetlands in the prairie pothole region of the USA. Vegetatio (now Plant Ecology). Plant Ecology (formerly Vegetatio 1948-1996), 89-99.

Actions

This study is summarised as evidence for the following.

Action Category

Raise water level to restore/create freshwater marshes from other land uses

Action Link
Marsh and Swamp Conservation
  1. Raise water level to restore/create freshwater marshes from other land uses

    A replicated, paired, site comparison study in 1991 of 20 prairie potholes in Iowa, USA (Galatowitsch & van der Valk 1996c) found that restored potholes (rewetted and planted with cover crops) contained fewer plant species than natural wetlands after three years, and that their plant community was composed of different types of species. Statistical significance was not assessed. Fifty-eight different plant species were recorded across 10 restored potholes (vs 96 species across 10 natural potholes). Fewer floating, emergent, wet prairie and sedge meadow species were recorded in restored potholes (total: 4, 13, 4 and 13 species respectively) than natural potholes (total: 5, 20, 19 and 34 species respectively). More submerged species were recorded in restored than natural potholes (total: 9 vs 4 species). The study also reported data on the cover of individual plant species (see original paper). Methods: This study used exactly the same potholes and methods as (7).

    (Summarised by: Nigel Taylor)

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