“…Isotope analyses provide useful tools in assessing mobility in ancient skeletal populations, using individuals as the units of analysis within an ecological and geological context, both in the Andes (Andrushko et al, in press;Hewitt et al, 2008;Knudson and Price, 2007;Knudson et al, 2004;Slovak, 2007;Verano and DeNiro, 1993) and elsewhere (Bentley and Knipper, 2005;Carlson, 1996;Chiaradia et al, 2003;Evans et al, 2006a,b;Montgomery et al, 2003;Price et al, 1994;Valentine et al, 2008;White et al, 2004White et al, , 2002White et al, , 1998.…”