"Species indicator";stat;p ;"Main channel" "O. bonariensis";0.70;0.001 ;"Tributaries outside of INP" "P. harpagos";0.74;0.001 "I. punctatus";0.49;0.024 ;"Tributaries inside of INP" "A. mullerae";0.95;0.001 "R. branneri";0.74;0.004