Siltation
As silting the natural replenishment of standing inland waters is designated as organic material. The silting is in contrast to the landing , in which the filling takes place by means of predominantly inorganic material transported from the outside. In water management, the entry of mineral substances is sometimes referred to as "siltation".
The silting up leads over a longer period of time to a reduction in the free water surface of bodies of water due to the growth of aquatic and marsh plants ( reed plants ) . It usually takes place in the intermediate stage of flat moor formation and is promoted by the alluvial surface of sand and silt , so that landings and silting complement each other.
Siltation zones
Nutrient-rich ( eutrophic ) lakes in the north temperate latitudes have (simplified) following zoning to: dip sheet belt ( pondweeds ), floating-leaf zone ( water lily ), reeds (reed), sedge Ried (Carex stricta) Erlenbruchwald . The alder quarry forest is considered the final stage of silting up. This sequence can also be viewed as a succession series , which, however, can only rarely be observed undisturbed.
Silted up bogs can also arise from dystrophic (lime-poor and humus-rich) still waters .
literature
- M. Schaefer: Dictionary of Ecology . Spektrum, Jena, 1992, ISBN 3-8252-0430-8
- Heinz Ellenberg: Vegetation of Central Europe with the Alps , Ulmer, Stuttgart 1963, pp. 382–401 (still water and its siltation)
References and footnotes
- ↑ Wasserwirtschaftsamt Traunstein: Landing of the Chiemsee ( Memento from March 4, 2016 in the Internet Archive ) (PDF; 1.1 MB) accessed on April 22, 2013
- ↑ Siegfried Slobodda: plant communities and their environment, Urania, Leipzig, 1985, pp 154 et seq
- ^ Heinz Ellenberg: Vegetation Central Europe with the Alps , Ulmer, Stuttgart 1963, p. 425