Journal Article Research Support, Non-U.S. Gov't amphibian anfibio antagonisms asignación Dirichlet latente box gum grassy woodland community compound effects comunidad disturbance ecology fire grazing grazing legacy grazing regime higher order effects hot topics indicadores indicators latent Dirichlet allocation legado de pastoreo manejo de recursos naturales mecanismo mechanism multiple stressors natural resource management pastizal boscoso de eucalipto reptil reptile régimen de pastoreo