δ 13 C and δ 15 N variations in terrestrial and marine foodwebs of Beagle Channel in the Holocene. Implications for human paleodietary reconstructions

In this article we evaluate the isotopic variability in δ13C and δ15N values of diets among maritime hunter-gatherers of the Beagle Channel (Southern Argentina). A system with two end members –marine and terrestrial resources– is not enough to describe populations with diversified subsistence strategies. Moreover, these marine hunter-gatherers are characterized as highly mobile groups whose foraging ranges comprised not only nearshore areas, but also offshore spaces.