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Factors that influence selective grazing preference occur at a range of scales and include both edaphic elements such as topography, vegetation community, soil type and human influences such as paddock configuration, water and supplement placement and burning strategies.  Cattle also graze patchily and many of the processes and interactions that impact upon land condition and hydrological function begin at the grazed patch scale. Previous studies (Andrew, 1986) found that once such grazed patches are initiated, cattle tend to re-graze them selectively within continuously grazed systems, which can result in localised degradation of land condition. If unchecked, such degradation can lead to increased landscape leakiness (Ludwig et al, 2002) and reduction in hydrological function at the paddock scale and beyond. ...