Ero sivun ”Harvanjärvi (04.582.1.016)/Restoration project 2009-2011” versioiden välillä
Järvi-meriwikistä
p (Tekstin korvaus – ”|Ylläpito=Asiantuntija” muotoon ”|Ylläpito=expert”) |
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| (11 välissä olevaa versiota samalta käyttäjältä ei näytetä) | |||
| Rivi 1: | Rivi 1: | ||
| + | {{Restoration project | ||
| + | |Description={{LakeAdmin description}} | ||
| + | |Project status=completed | ||
| + | |Start date=2009 | ||
| + | |End date=2011 | ||
| + | |Rating=successful | ||
| + | |Ylläpito=expert | ||
| + | }} | ||
| + | {{Lake problem | ||
| + | |Problem=External phosphorus loading from diffuse sources | ||
| + | |Additional information=Mean annual loading of phosphorus: 209 kg (field 103 kg, forest 54 kg, rural population 48 kg, swamp 4 kg) | ||
| + | }} | ||
| + | {{Lake problem | ||
| + | |Problem=Internal phosphorus loading | ||
| + | }} | ||
| + | {{Lake problem | ||
| + | |Problem=Blooms of cyanobacteria | ||
| + | }} | ||
| + | {{Lake problem | ||
| + | |Problem=Too high density of cyprinids | ||
| + | }} | ||
| + | {{Lake problem | ||
| + | |Problem=Overgrowth of macrophytes | ||
| + | }} | ||
| + | {{Restoration measure | ||
| + | |Measure=On site sewage treatment of scattered settlement | ||
| + | |Additional information=Estimated reduction from waste waters 45 % | ||
| + | }} | ||
| + | {{Restoration measure | ||
| + | |Measure=Biomanipulation by fish removal | ||
| + | }} | ||
| + | {{Restoration measure | ||
| + | |Measure=Aeration of hypolimnion | ||
| + | }} | ||
| + | {{Restoration measure | ||
| + | |Measure=Dredging | ||
| + | }} | ||
{{Water quality value | {{Water quality value | ||
|Parameter=Total phosphorus | |Parameter=Total phosphorus | ||
| Rivi 71: | Rivi 108: | ||
|Period=After restoration | |Period=After restoration | ||
|Additional information=Median value from n measures during growing season | |Additional information=Median value from n measures during growing season | ||
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==Further information== | ==Further information== | ||
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Nykyinen versio 19. toukokuuta 2016 kello 11.33
Tämä on asiantuntijan ylläpitämä sivu. Tietojen muokkaaminen on estetty tavallisilta käyttäjiltä.{{Laatikko2|Sisältö=
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 |
