(A) Soluble protein concentration for the Bromelioideae species Ananas bracteatus (ecophysiological type II), Quesnelia arvensis, Aechmea blanchetiana and Neoregelia cruenta (type III), and in the Tillandsioideae species Vriesea gigantea and Vriesea bituminosa (type IV) and Tillandsia cyanea (type V) after treatments with Dendropsophus nanus faeces and controls. (B) Total amino acid concentration for each species of bromeliads after the two treatments. (C) Total asparagine concentration for each species of bromeliads after the two treatments. Bars indicate the s.e.m. Asterisks (*) indicate statistical differences between treatments within each bromeliad species (t-test, α = 0·05), different lower case letters indicate statistical differences among species, and upper case letters indicate statistical differences among ecophysiological types (ANOVA/Tukey HSD post-hoc test, α = 0·05).