Water and sediment ecotoxicological assessment in a river affected by former mining activities - Morais, Lucas Gonçalves; Perina, Fernando Cesar; Davanso, Marcela Bergo; Buruaem, Lucas Moreira; Rodrigues, Valéria Guimarães Silvestre; Sígolo, Joel Barbujiani; Abessa, Denis Moledo de Souza (Pan-American Journal of Aquatic Sciences (PANAMJAS), 2013)