String bog
Encyclopedia
A String bog or Strong mire is a bog
consisting of slightly elevated ridges and islands, with woody plants, alternating with flat, wet sedge mat areas. String bogs occur on slightly sloping surfaces, with the ridges at right angles to the direction of water flow. They are an example of patterned vegetation
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Known as "Aapa" moore in Finland and Strangemoore in other parts of Northern Europe.
A string bog has a pattern of narrow (2–3m wide), low (<1m high) ridges oriented at right angles to the direction of drainage with wet depressions or pools occurring between the ridges. The water and peat are very low in nutrients because the water has been derived from other ombrotrophic
wetlands, which receive all of their water and nutrients from precipitation, rather than from streams or springs. The peat thickness is >1m.
String bogs are features associated with periglacial
climates, where the temperature results in long periods of subzero temperatures. The active layer exists as frozen ground for long periods and melts in the spring thaw. Such slow melting results in characteristic mass movement processes and features exclusively associated with specific periglacial environments.
Bog
A bog, quagmire or mire is a wetland that accumulates acidic peat, a deposit of dead plant material—often mosses or, in Arctic climates, lichens....
consisting of slightly elevated ridges and islands, with woody plants, alternating with flat, wet sedge mat areas. String bogs occur on slightly sloping surfaces, with the ridges at right angles to the direction of water flow. They are an example of patterned vegetation
Patterned vegetation
Patterned vegetation is a vegetation community that exhibits distinctive and repetitive patterns. Examples of patterned vegetation include fir waves, tiger bush, and string bog. The patterns typically arise from an interplay of phenomena that differentially encourage plant growth or mortality...
.
Known as "Aapa" moore in Finland and Strangemoore in other parts of Northern Europe.
A string bog has a pattern of narrow (2–3m wide), low (<1m high) ridges oriented at right angles to the direction of drainage with wet depressions or pools occurring between the ridges. The water and peat are very low in nutrients because the water has been derived from other ombrotrophic
Ombrotrophic
Ombrotrophic refers to soil or vegetation which receive all of their water and nutrients from precipitation, rather than from streams or springs. Such environments are hydrologically isolated from the surrounding landscape, and since rain is acidic and very low in nutrients, they are home to...
wetlands, which receive all of their water and nutrients from precipitation, rather than from streams or springs. The peat thickness is >1m.
String bogs are features associated with periglacial
Periglacial
Periglacial is an adjective originally referring to places in the edges of glacial areas, but it has later been widely used in geomorphology to describe any place where geomorphic processes related to freezing of water occur...
climates, where the temperature results in long periods of subzero temperatures. The active layer exists as frozen ground for long periods and melts in the spring thaw. Such slow melting results in characteristic mass movement processes and features exclusively associated with specific periglacial environments.