id	keyword
fennia-3738	lake
fennia-3738	water
fennia-3738	vegetation
fennia-3738	water level
fennia-3738	study
fennia-3738	finland
fennia-3738	study lakes
fennia-3738	regulation
fennia-3738	hellsten
fennia-3738	paper
fennia-3738	changes
fennia-3738	päijänne
fennia-3738	water quality
fennia-3738	lake päijänne
fennia-3738	kallavesi
fennia-3738	lake vanajavesi
fennia-3738	sites
fennia-3738	lake kallavesi
fennia-3738	lake pyhäjärvi
fennia-3738	study sites
fennia-3738	lake kemijärvi
fennia-3738	näsijärvi
fennia-3738	survey
fennia-3738	open
fennia-3738	unnukka
fennia-3738	cover