Correction: Schelfhout, S.; et al. Tree Species Identity Shapes Earthworm Communities. Forests 2017, 8, 85

It has come to our attention that there was a mistake in this paper [1]: namely, the units of soil cations K⁺, Na⁺, Mg²⁺, Ca²⁺ and Al³⁺ were written in mg·g⁻¹ while they should have been in µg·g⁻¹.

This mistake occurs in

Table 1. Mean and standard deviation of topsoil (0–5 cm) properties for each tree species across all six common gardens. Significant differences between tree species are indicated with letters, means with the same letter are not significantly different (Tukey post-hoc tests on linear mixed-effects (LME) models, 1|Site).

			Tree Species
Soil Variables (0–5 cm)	f-Value	p	Fraxinus	Acer	Tilia	Quercus	Fagus	Picea
Moisture (%)	1475	<0.001	14 ± 5 c	15 ± 4 c	12 ± 3 b	13 ± 4 bc	12 ± 4 b	9 ± 2 a
pH-KCl	325	<0.001	4.2 ± 0.6 c	4.2 ± 0.5 c	4.0 ± 0.4 c	3.7 ± 0.3 b	3.7 ± 0.2 b	3.5 ± 0.2 a
Base saturation (%)	108	<0.001	73 ± 28 b	78 ± 24 b	71 ± 20 b	49 ± 20 a	49 ± 21 a	41 ± 19 a
K+ in BaCl2 (µg·g−1)	50	<0.001	100 ± 88 b,c	114 ± 91 c	91 ± 56 bc	85 ± 57 bc	67 ± 42 ab	41 ± 22 a
Na+ in BaCl2 (µg·g−1)	28	<0.001	19 ± 16 a	17 ± 11 a	15 ± 8 a	13 ± 7 a	13 ± 7 a	38 ± 48 b
Mg2+ in BaCl2 (µg·g−1)	48	<0.001	139 ± 106 c	108 ± 72 bc	81 ± 39 ab	68 ± 53 a	49 ± 32 a	57 ± 41 a
Ca2+ in BaCl2 (µg·g−1)	42	<0.001	1241 ± 1020 c	1050 ± 690 bc	796 ± 437 ab	481 ± 388 a	446 ± 293 a	467 ± 351 a
Al3+ in BaCl2 (µg·g−1)	42	<0.001	115 ± 121 a	87 ± 58 a	151 ± 118 a	261 ± 121 bc	231 ± 105 b	309 ± 133 c

on page 3 and

Table A3. Mean and standard deviation of the deeper soil (5–15 cm) properties for each tree species across all six common gardens. Significant differences according to the Tukey post-hoc test between tree species are indicated with letters, means with the same letter are not significantly different (Tukey post-hoc tests on LME models, 1|Site).

			Tree Species
Soil Variables (15–30 cm)	f-Value	p	Fraxinus	Acer	Tilia	Quercus	Fagus	Picea
pH-KCl	275	<0.001	4.2 ± 0.58 c	4 ± 0.37 bc	3.9 ± 0.28 ab	3.8 ± 0.27 a	3.8 ± 0.17 a	3.7 ± 0.26 a
Base saturation (%)	10	<0.001	60 ± 36 bc	60 ± 30 c	43 ± 27 ab	35 ± 28 a	36 ± 26 a	41 ± 32 a
K in BaCl2 (µg·K·g−1)	28	<0.001	38 ± 17 b	54 ± 57 b	43 ± 35 b	46 ± 34 b	36 ± 23 b	28 ± 20 a
Na in BaCl2 (µg·Na·g−1)	26	<0.001	17 ± 19 a	13 ± 9 a	10 ± 5 a	9 ± 7 a	11 ± 6 a	37 ± 47 b
Mg in BaCl2 (µg·Mg·g−1)	16	<0.001	77 ± 81 b	61 ± 61 b	33 ± 26 a	38 ± 42 ab	29 ± 25 a	53 ± 45 ab
Ca in BaCl2 (µg·Ca·g−1)	18	<0.001	954 ± 1049 b	659 ± 603 b	375 ± 358 ab	357 ± 433 a	312 ± 288 a	482 ± 481 a
Al in BaCl2 (µg·Al·g−1)	57	<0.001	133 ± 131 a	136 ± 87 ab	211 ± 118 bc	262 ± 133 c	232 ± 103 bc	248 ± 136 bc

and

Table A4. Mean and standard deviation of the deeper soil (15–30 cm) properties for each tree species across all six common gardens. Significant differences according to the Tukey post-hoc test between tree species are indicated with letters, means with the same letter are not significantly different (Tukey post-hoc tests on LME models, 1|Site).

			Tree Species
Soil Variables (15–30 cm)	f-Value	p	Fraxinus	Acer	Tilia	Quercus	Fagus	Picea
pH-KCl	236	<0.001	4.4 ± 0.57 b	4.2 ± 0.37 ab	4.0 ± 0.31 a	4.1 ± 0.4 ab	4.1 ± 0.43 ab	4.1 ± 0.37 ab
Base saturation (%)	4.0	<0.005	60 ± 38	55 ± 33	39 ± 33	46 ± 33	51 ± 35	51 ± 39
K in BaCl2 (µg·K·g−1)	13	<0.001	29 ± 21	32 ± 38	29 ± 26	34 ± 29	27 ± 24	26 ± 22
Na in BaCl2 (µg·Na·g−1)	17	<0.001	17 ± 20 a	12 ± 7 a	9,0 ± 5,4 a	10 ± 9,5 a	13 ± 8,7 a	42 ± 58 b
Mg in BaCl2 (µg·Mg·g−1)	8.7	<0.001	76 ± 94 b	47 ± 59 ab	28 ± 33 a	51 ± 60 ab	43 ± 44 ab	58 ± 55 ab
Ca in BaCl2 (µg·Ca·g−1)	13	<0.001	1109 ± 1252 b	590 ± 694 ab	339 ± 402 a	522 ± 628 a	527 ± 524 ab	692 ± 733 ab
Al in BaCl2 (µg·Al·g−1)	37	<0.001	115 ± 113	128 ± 86	175 ± 105	175 ± 117	149 ± 97	149 ± 113

on page 15; and, in Figure 4a and Figure 5a–c on page 10 and Figure A1a–f on page 16.

Further, this correction is also needed in the following two lines: The line on page 11 “For the anecic species, A. longa was only scarcely present when soil Al concentrations were higher than 50 mg·g⁻¹” should be “For the anecic species, A. longa was only scarcely present when soil Al concentrations were higher than 50 µg·g⁻¹”; and, the line on page 11 “In our study, burrowing earthworm communities (endogeic and anecic species) appeared to be abundant when exchangeable soil Al concentrations were lower than 100 mg·g⁻¹, and soil pH-KCl values were higher than about 4.” should be “In our study, burrowing earthworm communities (endogeic and anecic species) appeared to be abundant when exchangeable soil Al concentrations were lower than 100 µg·g⁻¹, and soil pH-KCl values were higher than about 4.”

The authors would like to apologize for any inconvenience caused. The change does not affect the scientific results.

Here, we supply the corrected Tables and Figures.