Fire Reduces Fungal Species Richness and In Situ Mycorrhizal Colonization: A Meta-Analysis

Fire Ecology

Table 3 Results of statistical comparisons among groups for the response of overall mycorrhizal colonization to fire.

Comparison	Group	Mean effect size (%)	95 % CI	Records^a	Number of studies	P-value
Fire type	Prescribed fire	−0.50	−23.3 to 28.1	12	9	0.341
Fire type	Wildfire	−9.43	−23.8 to 5.1	39	15	0.341
Repeat fire	Repeated	−10.5	−44.9 to 20.8	5	2	0.935
Repeat fire	Single	−7.10	−20.2 to 8.6	46	22	0.935
Biome*	Temperate forest	−3.93	−17.6 to 10.9	32	14	0.358
	Boreal forest	−5.39	−50.1 to 39.1	6	1
	Temperate grassland	−14.7	−37.6 to 15.5	11	7

^a Number of data records for each group.
*Two studies were omitted because there were not enough records for tropical forest (Raman and Nagarajan 1996) and tropical grassland (Senthilkumar et al. 1995) for a statistical comparison.