PAULA, Amarildo Souza de; RODRIGUES, Efraim. Degradation of the northern paraná landscape: a study on forest fragments. Semina: Ciências Agrárias, [S. l.], v. 23, n. 2, p. 229–238, 2009. DOI: 10.5433/1679-0359.2002v23n2p229. Disponível em: https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/2101. Acesso em: 26 dec. 2025.