Mobile pastoralism, which we consider to be the movement of people and their livestock, is practiced all over the world, but more particularly in environments with extreme weather conditions where cultivation is considered risky and frequently prone to failure (Box and Perry 1971;Mapiye et al. 2009). Environmental drivers of mobile pastoralism include extreme temperature fluctuations, usually on a seasonal cycle, and low rainfall, often patchily distributed, associated with high variation between seasons or drought of several months to several years in duration. In mobile pastoral systems, transhumance is also a characteristic feature where livestock are moved along ecological gradients such as altitude, rainfall, soil moisture and hydrology in search of forages with key functional characteristics to sustain and optimise growth and reproduction (Breman and De Wit 1983;Homewood 2008;Fynn 2012;Fynn et al. 2015). These functional characteristics include forage productivity, quality, phenology, digestibility and salinity (key minerals) (Fynn 2012). An additional driver in some circumstances is the seasonal cultivation of crops that need to be protected from grazing (Samuels et al. 2008). These conditions have given rise to many pastoral communities whose livestock herding practices have evolved to encompass the variable availability of forage and water at a range of spatial and temporal scales.For example, in the montane environments of Namaqualand, South Africa, mobility takes place at both a daily and seasonal scale. On a daily basis, herders avoid overusing the same pasture and adapt their grazing circuit to accommodate factors such as animal behaviour and hunger, whereas on a seasonal cycle herds may move in response to cold winters in higher altitudes and access forage at lower elevations (Allsopp et al. 2007; Baker and Hoffman 2008;Samuels et al. 2008). In times of drought, herders will attempt to move to better grazing, but if such movement is constrained, they will use other strategies, in order to mitigate the impacts of climatic shocks and to maintain optimal production (Samuels et al. 2007). The evolution of mobile practices in response to environmental influences is well documented around the world (