Final answer:
The western NSW case study of mammal loss showed impacts on bush encroachment, disease transmission, and tourism industry.
Step-by-step explanation:
The western NSW case study of mammal loss showed several significant impacts. Firstly, the loss of large mammals can result in bush encroachment and decreased pastoral profitability. Secondly, increases in rodent densities may increase disease transmission as rodents and their parasites are reservoirs and vectors of various human diseases. Lastly, the loss of large mammals deprives regions of an important source of future revenue and foreign exchange, as they form the basis of the tourism industry.