Figure 6
Relationships between salmon use by wolves and the availability of deer and salmon. Mean group δ 13C seasonal isotopic shift in wolf (Canis lupus) hair – a proxy for salmon use – as a function of estimated: a) deer (Odocoileus hemionus) availability, b) salmon (Oncorhynchus spp.) availability, and c) salmon availability in a data set in which the Mosquito group 2002 salmon estimate datum excluded the Neekas River, the most productive in the study area, but one where wolf sign was rarely observed during fall. Samples collected in coastal British Columbia, 2001 to 2004.