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Tracing the Source of the Elephant And Hippopotamus Ivory from ...

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Interestingly, <strong>the</strong> two samples <strong>from</strong> Sudan have δ 13 C values indicating a diet rich in C3,<br />

and δ 15 N values corresponding to an environment with much rainfall. The sample <strong>from</strong><br />

Ethiopia, however, suggests a C4 rich diet and arid environment. Similar arid δ 15 N values<br />

were found in <strong>the</strong> desert areas <strong>of</strong> Damaraland and <strong>the</strong> Kaokoveld in Namibia. Their data<br />

are plotted for each region in Figures 40-43.<br />

Table 6: Isotopic analysis results for ivory samples <strong>from</strong> Ishibashi et al. (1999: 2-3).<br />

(Table 6 continued on next page)<br />

119

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