Tämä on asiantuntijan ylläpitämä sivu. Tietojen muokkaaminen on estetty tavallisilta käyttäjiltä.
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This page describes the restoration of Verevi järv – a Virhe lausekkeessa: tunnistamaton välimerkki ”,”.Virhe lausekkeessa: tunnistamaton välimerkki ”,”. lake in the Tartu County region of Estonia.
Data has been collected in the LakeAdmin project with the aim of sharing good restoration practices throughout Europe. More lakes can be searched in the LakeAdmin Lake Archive.
Data has been collected in the LakeAdmin project with the aim of sharing good restoration practices throughout Europe. More lakes can be searched in the LakeAdmin Lake Archive.
Main problems and reasons for restoration
External phosphorus loading from diffuse sources | |
Internal phosphorus loading | |
External phosphorus loading from point sources | |
Too high density of cyprinids | |
Overgrowth of macrophytes | |
Blooms of cyanobacteria | |
Other: Anoxia in bottom |
Main restoration and management measures
Year of implementation | ||
---|---|---|
Reduction of external nutrient load from diffuse sources | ||
Aeration of hypolimnion | ||
On site sewage treatment of scattered settlement | ||
Agricultural management practices | ||
Macrophyte removal | ||
Reduction of external nutrient load from point sources | 2002 | |
Other: Geotextile in bathing areas up to depth 1,75 m | ||
Dredging | ||
Biomanipulation by fish removal | ||
Wetlands or sedimentation ponds |
Effects of the restoration measures
Before restoration | After restoration | ||
---|---|---|---|
Total phosphorus | 0 | 0 | |
Total nitrogen | 0 | 0 | |
Alkalinity | 0 | 0 | |
Transparency | 0 | 0 | |
Chlorophyll-a | 0 | 0 |