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Recultivation of Jelonek and Winiary lakes in Gniezno by inactivation of phosphorus in bottom sediments (Lake recult. in Gniezno)
Date du début: 1 févr. 2009, Date de fin: 30 nov. 2010,
Background
Gniezno is situated in Gniezno Lake Region, the area in Poland with the lowest rainfall. Lakes Jelonek and Winiary are threatened by urban sprawl and for many years municipal household and industrial sewage drained into the lakes. The inflow of high loads of contaminants began in 19th Century and has resulted in the demise of vast numbers of fi ...
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