Nitrogen concentration time trends from Lithuanian rivers were analyzed to provide information on the amount, sources, and causes of nitrate runoff to the Baltic Sea from Lithuania. This investigation focused on the impact of large-scale agricultural production on nitrate concentration in the rivers. Long-term water quality changes were determined using the national monitoring data from the Lithuanian Ministry of Environmental Protection.
Sileika, Antanas Sigitas, "The Effect of Agriculture Nitrogen on Water Quality in Lithuanian Rivers" (1996). Baltic Basin Agriculture and Environment Series Reports. 4.