Dissecting the multi-scale spatial relationship of earthworm assemblages with soil environmental variability

Jiménez, Juan J; Decaëns, Thibaud; Lavelle, Patrick; Rossi, Jean-Pierre

doi:10.1186/s12898-014-0026-4

Table 3 Cross-correlograms of the root- and nutrient-related soil variables (significant Bonferroni corrected two-sided p-values (0.05/11 = 0.0045) for each distance class were tested using 999 permutations under the null hypothesis)

From: Dissecting the multi-scale spatial relationship of earthworm assemblages with soil environmental variability

Variables		Distance (number of pair points)											Global
Plant below-ground¹	Nutrient-related	5.0 (360)	8.5 (644)	12.8 (1112)	17.5 (1192)	22.6 (1548)	27.5 (1264)	32.1 (1128)	36.9 (1108)	42.0 (848)	47.3 (516)	52.8 (120)	significance, p’
FiRL	N_0–5	0.090	0.028	0.021	−0.022	0.026	−0.011	0.005	−0.036	−0.004	−0.069	−0.133	NS
	N_5–10	−0.015	−0.042	−0.036	−0.034	0.046 *	0.027	0.008	−0.011	0.001	0.033	−0.088	NS
	SOC_0–5	0.063	0.039	0.027	−0.022	0.012	0.011	0.014	−0.043	−0.009	−0.097 *	−0.076	NS
	SOC_5–10	0.051	0.077 *	0.082 **	0.039	0.065 **	−0.027	−0.044	−0.092 **	−0.059 *	−0.091 *	−0.128	Significant
	P_0–5	0.025	0.024	0.060 *	0.016	0.033	0.007	0.010	−0.032	−0.079 *	−0.175 **	−0.063	Significant
	P_5–10	−0.089 *	−0.133 **	−0.060 *	−0.013	0.025	0.055 *	0.028	0.038	0.001	−0.002	0.044	Significant
	C:N_0–5	−0.061	0.030	0.010	−0.001	−0.034	0.043	0.025	−0.011	−0.010	−0.045	0.122	NS
	C:N_5–10	0.053	0.099 *	0.093 **	0.054 *	0.020	−0.043	−0.040	−0.069 **	−0.049	−0.101 **	−0.034	Significant
	Litter	0.081	0.066	−0.020	−0.068 **	−0.008	−0.012	0.035	0.055 *	−0.019	−0.053	−0.022	NS
CoRL	N_0–5	−0.019	0.028	0.016	0.015	−0.003	0.043	0.015	0.002	−0.057 *	−0.142 **	0.019	Significant
	N_5–10	−0.146 **	−0.036	−0.013	−0.020	−0.006	0.072 **	0.054 *	0.030	−0.006	−0.085 *	−0.009	NS
	SOC_0–5	−0.022	0.026	0.012	0.022	0.005	0.041	0.015	−0.005	−0.055	−0.139 **	0.026	NS
	SOC_5–10	−0.007	0.093 **	0.098 **	0.030	0.001	0.037	−0.003	−0.084 **	−0.098 **	−0.121 **	0.004	Significant
	P_0–5	0.014	0.048	−0.001	0.028	0.042 *	0.033	0.005	−0.030	−0.079 *	−0.125 **	−0.068	NS
	P_5–10	−0.127 **	−0.122 **	−0.088 **	−0.028	0.026	0.063 **	0.089 ***	0.076 **	−0.003	−0.042	−0.039	Significant
	C:N_0–5	−0.012	−0.003	−0.015	0.010	0.021	−0.006	0.003	−0.017	0.007	0.015	0.032	NS
	C:N_5–10	0.103 *	0.104 *	0.090 ***	0.041	0.005	−0.023	−0.045	−0.094 **	−0.077 *	−0.033	0.007	Significant
	Litter	−0.036	0.005	0.010	−0.014	−0.002	0.012	−0.016	0.031	−0.020	0.035	−0.081	NS
FiRW	N_0–5	0.028	−0.021	−0.017	−0.062 *	0.012	0.015	0.044	−0.010	0.013	−0.069	0.001	NS
	N_5–10	0.062	0.010	−0.009	−0.006	0.062 **	−0.013	0.005	−0.047	−0.038	−0.052	−0.061	NS
	SOC_0–5	−0.043	−0.044	−0.013	−0.059 *	−0.012	0.007	0.058 *	0.014	0.059 *	−0.072	0.044	NS
	SOC_5–10	−0.075	−0.071 *	−0.036	−0.058 *	0.022	−0.018	−0.021	0.012	0.109 ***	0.108 **	0.125	Significant
	P_0–5	0.103 *	0.083 *	0.099 ***	0.041	0.022	0.036	0.005	−0.092 **	−0.150 **	−0.243 **	−0.157	Significant
	P_5–10	0.149 ***	0.145 **	0.094 ***	0.086 **	0.067 **	0.028	−0.074 *	−0.119 **	−0.192 **	−0.213 **	−0.203 *	Significant
	C:N_0–5	−0.168 **	−0.040	0.011	0.017	−0.053 **	−0.025	0.025	0.051	0.105 **	0.004	0.068	Significant
	C:N_5–10	−0.111 *	−0.070 *	−0.023	−0.048 *	−0.027	−0.005	−0.020	0.045	0.122 **	0.132 **	0.154	Significant
	Litter	0.060	0.054	−0.061 *	−0.078 **	−0.001	−0.023	0.039	0.020	0.018	0.020	0.192 *	Significant
CoRW	N_0–5	0.005	0.013	0.027	−0.023	−0.007	−0.003	0.020	0.025	−0.018	−0.084 *	0.015	NS
	N_5–10	−0.090	−0.020	0.021	−0.049 *	−0.017	0.030	0.069 **	0.037	0.028	−0.110 **	−0.014	NS
	SOC_0–5	0.003	0.014	0.020	−0.006	0.004	−0.004	0.019	0.004	−0.010	−0.092 *	0.021	NS
	SOC_5–10	0.025	0.069 *	0.092 ***	−0.018	−0.014	0.015	−0.001	−0.062 *	−0.052	−0.031	−0.025	Significant
	P_0–5	−0.088	−0.061	−0.060 *	−0.026	0.039	0.048 *	0.051 *	0.058 *	0.018	−0.095 *	−0.148 *	NS
	P_5–10	−0.183 **	−0.130 **	−0.104 **	−0.045 *	0.018	0.084 **	0.115 ***	0.109 ***	0.024	−0.085 *	−0.103	Significant
	C:N_0–5	−0.014	0.008	−0.019	0.039	0.029	−0.001	−0.003	−0.052 *	0.017	−0.011	0.037	NS
	C:N_5–10	0.091 *	0.074 *	0.063 *	0.022	0.003	−0.014	−0.056 *	−0.082 **	−0.064 *	0.062	−0.015	Significant
	Litter	−0.059	0.050	0.011	0.028	−0.017	0.005	−0.033	0.002	0.017	0.003	−0.101	NS

¹FiRL, fine root length; CoRL, coarse root length; FiRW, fine root weight; CoRW, coarse root weight.
* p < 0.05; ** p < 0.01; *** p < 0.001; NS, not significant.
The number of pair points (within brackets) and the lower and upper limits for each distance class employed while computing the cross-correlograms are indicated.

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