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A fen is a type of peat-accumulating wetland fed by mineral-rich ground or surface water. [1] [2] It is one of the main types of wetland along with marshes, swamps, and bogs. Bogs and fens, both peat-forming ecosystems, are also known as mires. [2] The unique water chemistry of fens is a result of the ground or surface water input.
The bog continues to form peat, and over time a shallow dome of bog peat develops into a raised bog. The dome is typically a few meters high in the center and is often surrounded by strips of fen or other wetland vegetation at the edges or along streamsides where groundwater can percolate into the wetland.
Luhasoo bog in Estonia.The mire has tussocks of heather, and is being colonised by pine trees.. This is a list of bogs, wetland mires that accumulate peat from dead plant material, usually sphagnum moss. [1]
While a cataract bog is host to plants typical of a bog, it is technically a fen, not a bog. Bogs get water from the atmosphere, while fens get their water from groundwater seepage. [11] Cataract bogs inhabit a narrow, linear zone next to the stream, and are partly shaded by trees and shrubs in the adjacent plant communities. [12]
All mires are initially fens when the peat starts to form, and may turn into bogs once the height of the peat layer reaches above the surrounding land. A quagmire is a floating (quaking) mire, bog, or any peatland being in a stage of hydrosere or hydrarch (hydroseral) succession, resulting in pond-filling yields underfoot (floating mats).
A fen is one of the main types of wetland, the others being grassy marshes, forested swamps, and peaty bogs.Along with bogs, fens are a kind of mire.Fens are usually fed by mineral-rich surface water or groundwater.
Swamp in Białowieża Forest, on the Belarus–Poland border. Swamps, marshes, mires, bogs, and fens are important parts of the natural landscape in Belarus.Vast swamplands historically covered the country, and currently there are around 2.5 million hectares of wetlands in Belarus.
Blanket bog on the Yell, Shetland Islands, with some peat working. Blanket bog or blanket mire, also known as featherbed bog, is an area of peatland, forming where there is a climate of high rainfall and a low level of evapotranspiration, allowing peat to develop not only in wet hollows but over large expanses of undulating ground.