Ecohydrological Processes in Almost Flat Wetlandsby André J. M. Jansen, KIWA Research and Consultancy, Nieuwegein, Netherlands,
Cees Maas, KIWA Research and Consultancy, Nieuwegein, Netherlands,
Abstract: In spite of their modest relief almost flat wetlands are able to maintain definite topographically driven groundwater flow systems. Large seepage areas create ecohydrological gradients which determine a flat wetland's vegetational variety, ranging from acid oligotrophic to base-rich mesotrophic. The authors give a theoretical explanation, underpinned by field evidence. Seepage faces are vulnerable to human interventions like groundwater withdrawal and land development. They show good prospects, however, of restoration.
Subject Headings: Groundwater flow | Wetlands (fresh water) | Seepage | Hydrology | Ecosystems | Land use | Topography | Vegetation
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