Description: Das Projekt "Hypolimnetic Al- and CaCO3-application for restoration of a stratified eutrophic hardwater lake (lake Tiefwarensee, Mecklenburg-Vorpommern, Germany)" wird/wurde ausgeführt durch: Forschungsverbund Berlin, Leibniz-Institut für Gewässerökologie und Binnenfischerei.Hypolimnetic Al- and CaCO3-treatments, combined with deep-water aeration and trophic state oriented fishery management, have been tested for lake restoration in a dimictic lake. From 2001 to 2003 approximately 100 g Al3+ m-2 sediment surface as Na-aluminate and 115 g Ca2+ m-2 in form of suspended Ca(OH)2 were added to the hypolimnion by deep-water aeration technology, during two or three cycles per year, each lasting about one month. Resulting from the formation of a new sediment boundary layer with a high P-binding capacity, the P-flux from sediments to water was significantly reduced. The hypo- and epilimnetic P-concentrations continuously decreased by more than 80 percent. The trophic conditions shifted from a highly eutrophic to mesotrophic state.
SupportProgram
Origin: /Bund/UBA/UFORDAT
Tags: Calciumbicarbonat ? Mecklenburg-Vorpommern ? Land Berlin ? Aluminium ? Calcium ? Bundesrepublik Deutschland ? Gewässerrenaturierung ? Fischzucht ? Hypolimnion ? Tiefenwasser ? Austauschkapazität ? Tiefenwasserbelüftung ? Gewässerbelüftung ? Gewässersanierung ? Ökologische Tragfähigkeit ? Speicherfähigkeit ? Sediment ? Wasser ? Abdeckung ? Fischerei ? Grenzschicht ? Sanierung ? Kontinuierliches Verfahren ? See [Binnengewässer] ?
Region: Berlin
License: cc-by-nc-nd/4.0
Language: Englisch/English
Time ranges: 2000-01-01 - 2004-12-31
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