Ero sivun ”Harvanjärvi (04.582.1.016)/Restoration project 2009-2011” versioiden välillä

Nykyinen versio 19. toukokuuta 2016 kello 11.33

Tämä on asiantuntijan ylläpitämä sivu. Tietojen muokkaaminen on estetty tavallisilta käyttäjiltä.

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This page describes the restoration of Harvanjärvi (04.582.1.016) – a Virhe lausekkeessa: tunnistamaton välimerkki ”,”.Virhe lausekkeessa: tunnistamaton välimerkki ”,”. lake in the Pohjois-Savon maakunta region of Finland. The restoration started in 2009 and ended in 2011. The restoration has been evaluated as successful.

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

Main restoration and management measures

		Year of implementation

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

Further information

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 |End date=2011
 |Rating=successful
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 |Problem=Internal phosphorus loading
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 |Problem=Blooms of cyanobacteria
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 |Problem=Too high density of cyprinids
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 {{Lake problem
 |Problem=Overgrowth of macrophytes
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 {{Restoration measure
 |Measure=On site sewage treatment of scattered settlement
 |Additional information=Estimated reduction from waste waters 45 %
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 |Measure=Biomanipulation by fish removal
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 |Measure=Dredging
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