Table 5 Results of logistic regression models indicating stand variables associated with the occurrence of giant sequoia seedlings in retention harvest (Black Mountain) and wildfire (Case Mountain, Redwood Mountain) stands of sequoia groves in the southern Sierra Nevada, California.
From: Giant Sequoia Regeneration in Groves Exposed to Wildfire and Retention Harvest
Grove Size class | Independent variable | Estimate (SE) | χ2 | Odds ratioa (95 % CI) | P |
|---|---|---|---|---|---|
Black Mountain | Â | Â | Â | Â | Â |
Large seedlings | Gap distance | 0.05 (0.02) | 5.869 | 1.06 (1.01–1.11) | 0.015 |
Case Mountain | Â | Â | Â | Â | Â |
Small seedlings | Gap distance | 0.07 (0.04) | 2.860 | 1.15 (0.99–1.18) | 0.091 |
Redwood Mountain | Â | Â | Â | Â | Â |
Large seedlings | Soil moisture | 0.20 (0.09) | 4.883 | 1.22 (1.01–1.48) | 0.027 |