A
String bog or
Strong mire is a
bogA bog or mire is a wetland type that accumulates acidic peat, a deposit of dead plant material—usually mosses, but also lichens in Arctic climates....
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 vegetationPatterned 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...
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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.
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A
String bog or
Strong mire is a
bogA bog or mire is a wetland type that accumulates acidic peat, a deposit of dead plant material—usually mosses, but also lichens in Arctic climates....
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 vegetationPatterned 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...
.
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
ombrotrophicOmbrotrophic 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.
Known as Aapamoore in Finland and Strangemoore in other parts of Northern Europe, string bogs are features associated with
periglacialPeriglacial is an adjective referring to places in the edges of glacial areas, normally those related to past ice ages rather than those in the modern era...
climates, where the temperature results in long peiods 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.