Ero sivun ”Purmojärvi (46.041.1.001)/Restoration project” versioiden välillä
Järvi-meriwikistä
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+ | |Measure=Biomanipulation by fish removal | ||
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+ | |Measure=Macrophyte removal | ||
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+ | |Measure=Dredging | ||
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Versio 27. tammikuuta 2014 kello 15.33
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This page describes the restoration of Purmojärvi (46.041.1.001) – a Virhe lausekkeessa: tunnistamaton välimerkki ”,”. lake in the Etelä-Pohjanmaan 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
Internal phosphorus loading | |
External phosphorus loading from diffuse sources Mean annual load of phosphorus: 1085 kg | |
Too high density of cyprinids | |
Overgrowth of macrophytes |
Main restoration and management measures
Year of implementation | ||
---|---|---|
Wetlands or sedimentation ponds | ||
Biomanipulation by fish removal | ||
Dredging | ||
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 |