Grazing pressure affects native pastures in central Queensland. Researchers studied how different levels of grazing impact grasses in two types of pasture communities. They found that low grazing pressure led to an increase in desirable grasses like kangaroo grass, while high grazing pressure did not affect less palatable wiregrasses. Grazing up to 50% of standing pasture mass in treeless areas had no negative effects on grass composition in the short term. Overall, changes in grass species due to grazing were smaller than those caused by seasonal rainfall variations.