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The Western Australian Rangeland Monitoring System (WARMS) provides an assessment of change at district or vegetation group level. Site density is insufficient for lease-level assessment; such assessments are made by ground traverse during lease inspection. Using WARMS data to identify district-level changes, the extent to which broad-scale changes are reflected on individual leases can be determined.

By comparing both datasets (broad-scale and lease-level), those making judgements about the influences of management should be better able to attribute causal factors to the observed change, and so better evaluate the outcome of management actions. For example, broad-scale data might suggest widespread increases in perennial grass frequency across the district, yet observations on an individual lease in that same district may show a decline over the same period. This would signal that management may have led to the decline, prompting more detailed examination.