Truffle Abundance in Recently Prescribed Burned and Unburned Forests in Yosemite National Park: Implications for Mycophagous Mammals

Fire Ecology

Table 3 Results of logistic regression models relating microsite variables with the occurrence of truffles in Yosemite National Park, California (2006).

Treatment	Independent variable	Estimate (SE)	χ²	Odds ratio^a (95 % CI)	P
Burned	Litter depth	0.96 (0.37)	6.901	2.6 (1.2 to 5.5)	0.009
	Tree distance	-0.96 (0.44)	4.705	0.4 (0.2 to 0.9)	0.030
Unburned	Litter depth	0.21 (0.12)	2.885	1.2 (1.0 to 1.7)	0.089

^a Effect of a 1 cm increase in litter depth or 1 m distance to the nearest tree on the probability of truffle occurrence.