ULRICH, Werner. Nestedness analysis as a tool to identify ecological gradients. Ecological Questions, [S. l.], v. 11, p. 27–34, 2009. DOI: 10.12775/v10090-009-0015-y. Disponível em: https://apcz.umk.pl/EQ/article/view/v10090-009-0015-y. Acesso em: 10 dec. 2025.