SCDGSalt City Derby Girls (Utah)
SCDGScottish Compost Development Group (UK)
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Unfortunately, the crown increments (representing 0.5 to 6 years of age) for SCDG 46 and the first and fifth increments for SCDG 207 did not produce enough collagen or had poor C:N ratios for inclusion in the study.
A Tukey's test reveals that most individuals are significantly different for both [delta][.sup.15]N and [delta][.sup.13]C values (p < 0.05), especially the very low [delta][.sup.15]N values for SCDG 14, 46, and 127.
Only four of the selected seven individuals (SCDG 25, 62, 128, and 207) exhibit an early life dietary transition that is consistent with the theoretical model presented in Figure 3.
Interestingly, two of these individuals (SCDG 46 and 127) date to the later Mission period and show lower [delta][.sup.15]N values than earlier Mission period individuals with little variation (only ranging between 8.4[per thousand] and 9.4[per thousand]).
The timing of Wilson bands and the incremental isotopic data indicate that weaning was complete between 2.5 and 4.5 years of age in the four individuals who fit the theoretical weaning model (SCDG 25, 62, 128, and 207).
The two individuals (SCDG 46 and 127) from the later Mission period and SCDG 14 did not exhibit changes in isotopic values consistent with our theoretical weaning model.
Figure 9 compares incremental isotopic data from SCDG and Fallen Tree (A.D.