BRISBANE, Australia, March 24 (TNSjou) -- The Queensland University of Technology issued the following news: * * * All herbivores, great and small, needed to maintain health of endangered grassy woodlands A new QUT-led study has found both grazing mammals and plant-eating insects together play a major role in maintaining the health of Australia's endangered grassy woodlands. * Grazing mammals and plant-eating insects contribute to maintaining the dominance of a key native grass species * T  more