A scientific study to establish the impacts and benefits of stock grazing in National Parks. The study took place in selected River Red Gum, Black Box and Cypress pine reserves in the Riverina, Central West and Western NSW. A total of 451 sites were selected spanning an area of 0.4M km² to obtain detailed measures of ecology, biodiversity and grazing intensity. The aim of the study was to inform decisions about the future of Red gum and Cypress pine grazing permits and licences.