Movements and Radionuclide Concentrations of Sage Grouse in Southeastern Idaho

Full Issue

“…Early-season precipitation increased the probability of movement, whereas the interaction between precipitation and time suggested attenuation of the effect of precipitation through time (Figure 1). Greater Sage-Grouse harvest paradigms are linked to movements from fall to winter habitats, and our results provide insight where little information previously existed (e.g., Connelly and Markham 1983, Dunn and Braun 1986, Connelly et al 1988. Variation in altitudinal migration or seasonal movements likely affect harvest rates in blue grouse (Dendragapus spp.…”

“…However, in several grouse species, snowfall-stimulated fall movements occur before food availability becomes limited by snow depth (Bergerud and Gratson 1988). Furthermore, studies have reported conflicting results regarding the temporal nature of migratory movements from late-summer areas to wintering areas for Greater Sage-Grouse, where movements were rapid in some instances and prolonged in others (e.g., Wallestad 1971, Connelly and Markham 1983, Dunn and Braun 1986, Connelly et al 1988). Knowledge of the timing and spatial arrangement of movement is requisite to optimizing many conservation actions.…”

Guidance Manual for Conducting Screening Level Ecological Risk Assessments at the INEL

“…In at least one case, the sage grouse study (Connelly and Markham 1983), samples were collected from the ICPP~area and no attempt was made to discriminate between the two facilities. Although not generally made explicit, this confounding of data from the two areas may be common for animal studies with some mobile species (e.g., birds or large mammals).…”

“…C-I-12 Markham and Halford (1982) Connelly and Markham (1983) C-I-14 Assumed to include both '9Pu and 240Pu.…”

“…Several authors have calculated potential doses to humans from consuming contaminated meats (Fraley and Bowman 1982;Connelly and Markham 1983;Halford 1987;Markham et al 1988;Morris et al in preparation). In every case, the predicted potential doses have been found to be insignificant relative to DOE standards and background doses.…”