Search results
Results from the WOW.Com Content Network
A variety of mire types in Carbajal Valley, Argentina Avaste Fen, one of the largest fens in Estonia A valley mire creates a level ground surface in otherwise dramatic topography. Upper Bigo Bog, Rwenzori Mountains, Uganda. A peatland is a type of wetland whose soils consist of organic matter from decaying plants, forming layers of peat.
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 ...
A fen-meadow in Norfolk Ottawa Lake Fen Meadow in Wisconsin during summer months. A fen-meadow is a type of peatland, common in North America and Europe, that receives water from precipitation and groundwater.
Its development was enabled where the fen was watered directly by rainfall. The slightly acidic rain washed the hydroxide ions out of the peat, making it more suitable for acid-loving plants, notably Sphagnum species. This is the same as bog, but the word moor was applied to this acid peatland occurring on hills. These moors disappeared in the ...
Over centuries there is a progression from open lake, to a marsh, to a fen (or, on acidic substrates, valley bog), to a carr, as silt or peat accumulates within the lake. Eventually, peat builds up to a level where the land surface is too flat for ground or surface water to reach the center of the wetland.
The peatland ecosystem covers 3.7 million square kilometres (1.4 million square miles) [12] and is the most efficient carbon sink on the planet, [2] [13] because peatland plants capture carbon dioxide (CO 2) naturally released from the peat, maintaining an equilibrium.
Local groundwater movements created an artesian flow that caused water to seep into the fen and its saturated peatland. The water is alkaline, having flowed through calcium-rich layers of gravel or stone. [1] The USFWS performed a biological inventory of the Cabin Creek Raised Bog, finding over 200 species of plant life within the 40-acre parcel.
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.