Karhijärvi (36.092.1.001)/Restoration project
Järvi-meriwikistä
< Karhijärvi (36.092.1.001)
Versio hetkellä 19. toukokuuta 2016 kello 12.22 – tehnyt Molindho (keskustelu | muokkaukset) (Tekstin korvaus – ”|Ylläpito=Asiantuntija” muotoon ”|Ylläpito=expert”)
Tämä on asiantuntijan ylläpitämä sivu. Tietojen muokkaaminen on estetty tavallisilta käyttäjiltä.
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This page describes the restoration of Karhijärvi (36.092.1.001) – a Virhe lausekkeessa: tunnistamaton välimerkki ”,”.Virhe lausekkeessa: tunnistamaton välimerkki ”,”. lake in the Satakunnan maakunta region of Finland.
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 Mean annual load of phosphorus (from diffuse and point sources): 9244 kg | |
Too high density of cyprinids | |
Internal phosphorus loading | |
External phosphorus loading from point sources Mean annual load of phosphorus (from diffuse and point sources): 9244 kg | |
Overgrowth of macrophytes | |
Blooms of cyanobacteria |
Main restoration and management measures
Year of implementation | ||
---|---|---|
Reduction of external nutrient load from point sources Current P-reduction in treatment of sewage water is 95% | 1990 | |
Biomanipulation by fish removal | ||
Macrophyte removal |
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 |