How does fragmentation by small dams affect stream ichthyofauna in the upper Paraná River basin?
Gilberto Nepomuceno Salvador, Carlos Bernardo Mascarenhas Alves, Débora Reis de Carvalho, Paulo Santos Pompeu, Cecília Gontijo Leal, Paulo Sérgio Formagio, Robert Mason Hughes Rosalva Sulzbacher and Rafael Pereira Leitão