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  1. Wetland - Wikipedia

    A wetland is a distinct semi-aquatic ecosystem whose groundcovers are flooded or saturated in water, either permanently, for years or decades, or only seasonally. Flooding results in oxygen -poor …

  2. What is a Wetland? - US EPA

    Apr 7, 2025 · Definition of a Wetland Wetlands are areas where water covers the soil, or is present either at or near the surface of the soil all year or for varying periods of time during the year, …

  3. Wetlands Mapper | U.S. Fish & Wildlife Service

    This information is intended to promote the understanding and conservation of wetland resources through discovery and education as well as to aid in resource management, research and decision …

  4. Wetland | Definition, Characteristics, Types, Importance ...

    Jan 6, 2026 · A wetland is a complex ecosystem characterized by flooding or saturation of the soil, which creates low-oxygen environments that favor a specialized assemblage of plants, animals, and …

  5. What is a wetland? - NOAA's National Ocean Service

    Wetland habitats serve essential functions in an ecosystem, including acting as water filters, providing flood and erosion control, and furnishing food and homes for fish and wildlife.

  6. What Is a Wetland? Plus 8 Key Wetland Facts | World Wildlife Fund

    A wetland is a place in which the land is covered by water—salt, fresh, or somewhere in between—either seasonally or permanently. It functions as its own distinct ecosystem.

  7. Wetlands | U.S. Geological Survey - USGS.gov

    Mar 14, 2025 · Researchers at WARC will use data and models to produce probabilistic maps of current and future wetland inundation, coastal wetland extent, and coastal and wetland trangression.