A number of recent studies have used GIS analysis to measure the ecological factors contributing to the provision of certain services (Naidoo and Ricketts 2006; Beier, Patterson et al. 2008; Nelson, Mendoza et al. 2009). These studies explore how the provision of ecosystem services varies across the landscape. However, far fewer studies have explicitly identified the demand side, or human beneficiaries (Hein et al. 2006) or mapped these beneficiaries (Beier et al. 2008). Yet the need for such mapping is becoming increasingly recognized (Naidoo, Balmford et al. 2008). Supply and demand side mapping are complex, since ecosystem services provision and.
