As discussed for δ 13 C and δ 15 N values, an increasing trend in marine-brackish resource intake from early (Morro do Ouro) to late (Forte Marechal Luz) populations is visible in both dietary proteins and calories, as documented by previous studies in this region 40 .
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Fishing intensification as response to Late Holocene socio-ecological instability in southeastern South America.
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