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 proce
Marshlands are often noted within wetlands, as seen here at the Jamaica Bay Wildlife Refuge in New York City.
Sunrise at Viru Bog, Estonia
Wetlands contrast the hot, arid landscape around Middle Spring, Fish Springs National Wildlife Refuge, Utah.
The wetlands of Cape May, New Jersey, in the United States comprise an extensive hydrological network that makes them an ornithologically important location to study the many birds which use the preserve as a place to nest.
A fen is a type of peat-accumulating wetland fed by mineral-rich ground or surface water. It is one of the main types of wetland along with marshes, swamps, and bogs. Bogs and fens, both peat-forming
Wetland
…Under the Ramsar international wetland conservation treaty, wetlands are defined as follows: Article 1.1: "...wetlands are areas of marsh, fen, peatland or water, whether natural or artificial, permanent or temporary, with water that is static or flowing, fresh, brackish or salt, including…
Avaste Fen, Estonia. Sedges dominate the landscape. Woody shrubs and trees are sparse.
Wicken Fen, England. Grasses in the foreground are typical of a fen.
Small extreme rich fen in southwestern Minnesota. The white flowers, Parnassia glauca, are a fen indicator species in Minnesota.