Table 4.
Estimates (transformed) of density, D, and spatial scale of movement, σ, parameters for models developed to estimate grizzly bear population trend using spatial capture-recapture data from the Northern Continental Divide Ecosystem in northwestern Montana, USA.
| Model | Female | Male | |||||
|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 1 | 3 | ||
| D (95% CI) Bears/1,000 km2 | Year | ||||||
| 2004 | 7.77 (6.37–9.48) | 7.76 (6.37–9.47) | 7.92 (6.42–9.77) | 7.90 (6.41–9.75) | 5.78 (4.96–6.72) | 5.75 (4.89–6.75) | |
| No sampling 20005–2008 | |||||||
| 2009 | 9.90 (9.00–10.90) | 9.91 (9.00–10.90) | 8.39 (6.32–11.15) | 8.40 (6.33–11.16) | 6.80 (6.34–7.30) | 6.77 (5.74–7.97) | |
| 2010 | 10.40 (9.34–11.57) | 10.40 (9.35–11.57) | 10.16 (8.39–12.29) | 10.18 (8.41–12.32) | 7.03 (6.54–7.56) | 7.20 (6,20–8.34) | |
| 2011 | 10.91 (9.60–12.40) | 10.92 (9.61–12.41) | 10.39 (8.51–12.68) | 10.38 (8.50–12.67) | 7.27 (6.69–7.88) | 7.32 (6.27–8.53) | |
| 2012 | 11.45 (9.80–13.38) | 11.47 (9.81–13.40) | 11.04 (9.21–13.22) | 11.04 (9.21–13.23) | 7.51 (6.81–8.27) | 7.36 (6.33–8.54) | |
| σ (95% CI) km | 2004 | 4.40 (3.96–4.88) | 4.39 (3.95–4.87) | 4.39 (3.96–4.87) | 4.38 (3.95–4.86) | 9.30 (8.81–9.81) | 9.30 (8.81–9.81) |
| No sampling 2005–2008 | |||||||
| 2009 | 5.84 (4.99–6.83) | 5.83 (4.98–6.82) | 5.89 (5.01–6.92) | 5.88 (5.00–6.90) | 7.34 (6.92–7.78) | 7.35 (6.93–7.79) | |
| 2010 | 3.05 (2.79–3.33) | 3.05 (2.79–3.33) | 3.04 (2.78–3.33) | 3.04 (2.78–3.33) | 9.17 (8.65–9.72) | 9.15 (8.63–9.71) | |
| 2011 | 3.24 (2.94–3.57) | 3.24 (2.94–3.58) | 3.24 (2.94–3.58) | 3.24 (2.94–3.58) | 7.62 (7.16–8.10) | 7.62 (7.16–8.10) | |
| 2012 | 3.86 (3.53–4.22) | 3.86 (3.53–4.22) | 3.86 (3.53–4.22) | 3.86 (3.53–4.22) | 9.12 (8.59–9.68) | 9.13 (8.59–9.69) | |