Nitrogen fluxes from treefrogs to tank epiphytic bromeliads: an isotopic and physiological approach - Romero, Gustavo Quevedo; Nomura, Fausto; Gonçalves, Ana Z.; Dias, Natacha Y. N.; Mercier, Helenice; Conforto, Elenice de Cassia; Rossa-Feres, Denise de Cerqueira (Oecologia, 2010)