Saprophytic fungal communities change in diversity and species composition across a volcanic soil chronosequence at Sierra del Chichinautzin, Mexico

Table 1 General site characteristics (modified from Peña-Ramírez et al. 2009) and selected soil variables of the plots surveyed for saprophytic sporocarps at the three study sites

	Young site					Middle-aged site					Old site
Age of land surface (years B.P.^a)	1,835 ± 55					2,835 ± 75 to 4,690 ± 90					9,620 ± 160 to 10,900 ± 280
UTM Coordinates	X: 482,041, Y: 2,109,907					X: 482,037, Y: 2,109,903					X: 475,922, Y: 2,114,796
Soil classification (WRB 2006)	Mollic Leptosol					Lepti-vitric Andosol					Eutrisilic Andosol
Total soil depth (cm)	6–35					30–41					193–200
Available water (L m⁻²)	28.2					95.4					301.6
Soil organic horizon depth (cm)	5					27					43
Soil organic horizon properties by plot	P1	P2	P3	P4	P5	P1	P2	P3	P4	P5	P1	P2	P3	P4	P5
C (kg m⁻²)	8.9	6.2	7.6	6.5	9.2	16.1	20.2	14.3	15.1	23.1	16.7	13.2	18.5	11.8	16.8
Mean per site^b	7.68 ± 0.63 a					17.8 ± 1.13 b					15.4 ± 1.36 b
N (kg m⁻²)	0.49	0.36	0.46	0.32	0.47	0.96	1.23	0.87	0.89	1.24	0.89	0.8	1.06	0.74	0.97
Mean per site^b	0.42 ± 0.03 a					1.04 ± 0.05 b					0.89 ± 0.06 b
C:N	18.4	17.2	17.5	18.3	17.3	16.6	16.4	16.2	16.8	18.5	18.3	16.4	17.3	15.1	17
Mean per site^b	17.7 ± 0.78 a					16.9 ± 0.31 a					16.8 ± 0.45 a
P (g m⁻²)	1.76	0.59	3.48	1.49	3.35	2.55	1.14	2	2.59	3.65	1.16	1.31	2.45	0.69	1.28
Mean per site^b	2.13 ± 0.37 ab					2.39 ± 0.29 a					1.38 ± 0.19 b

^aB.P. Before Present. Last eruption date and start of soil formation. The dates correspond to non-calibrated ¹⁴C dates (Siebe et al. 2004)
^bDifferent letters in columns indicate significant differences (Mann-Whitney U Test, p < 0.05)

ISSN: 1869-2044