2 - Spring sampling of northern pike - Duga Resa factory (April 22nd 2021)
The sampling of water and sediment, as well as fish (northern pike, Esox lucius) in the Mrežnica River was carried out at the sampling site in Duga Resa, in front of the factory of former cotton industry. The sampling of water and sediment was further carried out at the sampling site Karlovac - Mala Švarča.