Integrated Description of Wetland Hydrology and Ecology by Mathematical Models

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by Karsten Havnø, Danish Hydraulic Inst, Horsholm, Denmark,
Jesper Dørge, Danish Hydraulic Inst, Horsholm, Denmark,

Document Type: Proceeding Paper

Part of: Hydraulic Engineering:

Abstract: The agricultural utilization of the natural zone between the terrestrial and the aquatic system has reduced these important bufferzones in the last 30 years. The use of wetlands as nutrient traps is a possible method to reduce nutrients, primarily nitrate, in rivers and lakes. Re-establishment of wetlands for the control of pollution provides a variety of secondary benefits in addition to water quality enhancement. Ancillary benefits provided by these wetlands typically include photosynthetic production, secondary production of fauna, food chain and habitat diversity, export to adjacent systems, and additional services to human society such as aesthetics, hunting, recreation, and research. Mathematical models of wetland areas are effective tools for analyses, planning and feasibility studies. They may be applied on regional or local scales with various levels of complexity. An integrated mathematical modelling system has been developed based on deterministic hydraulic and hydrological descriptions (Malmgren-Hansen, Olesen, 1989). The models include descriptions of sedimentation, morphology and water quality processes.

Subject Headings: Hydrologic models | Wetlands (fresh water) | Hydrology | Mathematical models | Water pollution | Water quality | Aquatic habitats | Mathematics | Ecosystems | Water supply | Nutrients | Rivers and lakes

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