Table 2.

Mineral soil (0 cm to 10 cm) properties across the forest

Property	Mean	SE
pH	4.55	0.11
Total C, %	16.50	2.68
Total N, %	0.82	0.13
Caexch, µg⋅g−1	750.3	171.3
Mgexch, µg⋅g−1	418.6	139.2
Kexch, µg⋅g−1	225.7	28.1
Naexch, µg⋅g−1	62.3	16.5
Srexch, µg⋅g−1	10.0	2.8
C:N, mass	20.2	1.2
Ca:Sr, molar	186.2	14.5
δ13C, ‰	−26.97	0.2
δ15N, ‰	0.79	0.25
87Sr/86Sratmos	0.70916	0.00005
87Sr/86Srbedrock	0.70374	0.00007
87Sr/86Srexch	0.70635	0.00013
% Rock Srexch	51.8	2.4
% Rock Caexch	64.5	2.2

Values are means and SEs (n = 8) from a transect bisecting the forest. Values of ⁸⁷Sr/⁸⁶Sr_atmos and ⁸⁷Sr/⁸⁶Sr_bedrock are from ref. 20, ⁸⁷Sr/⁸⁶Sr_exch are Sr isotopes in soil exchangeable pool, and % rock Sr_exch and Ca_exch are from Eqs. 1 and 2, respectively.