Table 5.

Changes in proportion of Ascomycota and Basidiomycota fungi after long-term elevated atmospheric CO₂ conditions, N-fertilization or the combination of treatments, at four soil depth intervals.

Soil depth interval	Fungal phylum	ANOVA F test	Effects of CO2	Effects of N-fertilization	CO2 × N fert interaction
FF
0	Ascomycota	0.0570	0.2873	0.0138 F > NF	0.5824
	Basidiomycota	0.0793	0.2765	0.0195 NF > F	0.9643
0–2 cm	Ascomycota	0.0004	0.2525	0.0001 F > NF	0.2525
	Basidiomycota	0.0028	0.7685	0.0004 NF > F	0.2695
2–5 cm	Ascomycota	0.2264	0.4553	0.3894	0.0826
	Basidiomycota	0.3483	0.3688	0.1343	0.7302
5–10 cm	Ascomycota	0.2519	0.8909	0.0701	0.4645
	Basidiomycota	0.3821	0.6706	0.1084	0.8678

Values in each row are the p value from the factorial ANOVA F test, followed by the least square means pairwise t text value for that factor. F, fertilized, NF, not fertilized.