Marsh
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In ecology, a marsh is a wetland that is dominated by herbaceous plants rather than by woody plants. More in general, the word can be used for any low-lying and seasonally waterlogged terrain. In Euro
Marshlands are often noted within wetlands, as seen here in the New Jersey Meadowlands at Lyndhurst, New Jersey, U.S.
White water lilies are a typical marsh plant in European areas of deeper water.
Many kinds of birds nest in marshes; this one is a yellow-headed blackbird.
A marsh in Jyväskylä, Finland
Fen
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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
Marsh
…Bog – Type of wetland with peat-rich soil Fen – Type of wetland fed by mineral-rich ground or surface water Swamp – Forested wetland…
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.
Spaulding Fen, Wisconsin
Small extreme rich fen in southwestern Minnesota. The white flowers, Parnassia glauca, are a fen indicator species in Minnesota.