Vibrating lawn

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Silted up high bog with inaccessible closed suspended ceiling
Peat moss swinging lawn on silted up high bog

A floating mats (Engl. Floating mat ) is an over clear water floating vegetation of mosses and other, especially streamers forming plants from the shores of on the water surface outgrows into a water body. The habitat type is protected in the EU according to the Fauna-Flora-Habitat Directive with the designation "LRT No. 7140 Transitional and vibrating lawn moors ".

Vibrating lawns are not always sustainable. There is a risk of drowning when entering .

Emergence

Vibrating lawn formation is a process of silting up water. In bog waters , peat moss vibrating lawns form when the water level drops and nutrient enrichment . In eutrophic waters, floating turfs and colonization with plants can create a vibrating lawn. The plant covers are held together by their root felt. Reeds or rushes growing on the bank can separate this plant cover, so that a floating island is formed. If the swing lawn is stable and large enough, trees can even settle on it, for example in the Kleiner Arbersee . Peat is formed underneath the vibrating turf , which slowly sinks down and gradually fills the water.

Flora and fauna

In nutrient-poor to moderately nutrient-rich, acidic waters, rocking lawns are formed from peat moss ( spit peat moss (Sphagnum cuspidatum) , species of the complex Sphagnum recurvum see left) or brown moss ( Scorpidium scorpioides ). In quaking character types further locate the small sedge vineyard such as the mud-sedge ( Carex limosa ), ( Carex rostrata ), rhynchospora ( Rhynchospora ssp. ), Bladder bulrush ( Scheuchzeria palustris ) and sump blood eye ( Potentilla palustris ). Reeds ( Phragmites australis ), cattails ( Typha ssp. ), Cypress sedge ( Carex pseudocyperus ) and water hemlock ( Circuta virosa ) settle at the edge of nutrient-rich waters . Floating mats are habitat for shelled amoebas such as Amphitrema sp. and mosquito larvae .

Hazards

  • drainage
  • Peat cutting or peat removal
  • Use, v. a. through forestry and agriculture, but also recreational use
  • Nutrient input, fertilization, eutrophication

See also

literature

  • Hutter, Claus-Peter (ed.); Alois Kapfer & Peter Poschlod (1997): Swamps and moors - recognizing, determining, protecting biotopes. Weitbrecht Verlag , Stuttgart, Vienna, Bern. ISBN 3-522-72060-1