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Karelian Pyhäjärvi
Karjalan Pyhäjärvi
construction of shore line
diffuse loading
ecological status of a lake
effects of agriculture and forest management on aquatic environment
fish habitat improvement
hajakuormitus
ichtyofauna
kalaston hoito
maatalouden vesistövaikutus
metsätalouden vesistövaikutus
monitoring
näkösyvyys
oligotrophic lake
pistekuormitus
point source loading
rantarakentaminen
restoration of waters
vedenlaatu
vesiensuojelu
vesistökunnostus
vesistöseuranta
water protection
water quality