Table 4. Mean isotope ratios for seven potential grizzly bear foods from the lower Stikine valley of northeast British Columbia.
δ13C values for marmot hair samples were reduced by 1.5. bn = 1 for sulfur in this category.
| Species | δ 13C | SD | δ15N | SD | δ34S | SD | n |
|---|---|---|---|---|---|---|---|
| Herbivores | |||||||
| Moose hair and muscle | -26.8 | 0.5 | 2.4 | 1.4 | -3.4 | 3.7 | 4 |
| Marmot hair and muscle | -26.0 | 1.1 |
1.4 | 1.9 | 4.4 | 7.0 | 16 |
| Mountain goat hair | -24.5 | 0.4 | 1.4 | 0.7 | 0.7 | 2.8 | 11 |
| Salmon | |||||||
| Sockeye muscle and skin | -21.0 | 1.3 | 11.5 | 1.7 | 19.0 | 0.6 | 12 |
| Coho muscle, skin and roe | -18.9 | 1.5 | 10.5 | 2.4 | 19.2 | 0.4 | 8 |
| Plants | |||||||
| Skunk cabbage tissue | -30.3 | 2.7 | 3.5 | 1.5 | -8.8 | 8.9 | 8 |
| Huckleberry fruit without seeds | -30.0 | 0.2 | 0.0 | 0.2 | 3.1 | b | 2 |