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A string bog or string mire is a
Canadian Soil Information Service - Local Surface Forms
(checked 2014-10-18) * * String bog Ecology {{Hydrology-stub de:Regenmoor#Aapamoore
A string bog or string mire is a bog
A bog or bogland is a wetland that accumulates peat as a deposit of dead plant materials often mosses, typically sphagnum moss. It is one of the four main types of wetlands. Other names for bogs include mire, mosses, quagmire, and muskeg; a ...
consisting of slightly elevated ridges and islands, with woody plants, alternating with flat, wet sedge
The Cyperaceae are a family of graminoid (grass-like), monocotyledonous flowering plants known as sedges. The family is large, with some 5,500 known species described in about 90 genera, the largest being the "true sedges" genus '' Carex'' ...
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.
String bogs are also known as aapa moors or aapa mires (from Finnish ''aapasuo'') or Strangmoor (from the German
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).
A string bog has a pattern of narrow (2–3m wide), low (less than 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 greater than 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. Slow melting results in characteristic mass movement processes and features associated with specific periglacial environments.
See also
* Blanket bog * Flark *Marsh
A marsh is a wetland that is dominated by herbaceous rather than woody plant species.Keddy, P.A. 2010. Wetland Ecology: Principles and Conservation (2nd edition). Cambridge University Press, Cambridge, UK. 497 p Marshes can often be found ...
References
Canadian Soil Information Service - Local Surface Forms
(checked 2014-10-18) * * String bog Ecology {{Hydrology-stub de:Regenmoor#Aapamoore