Electronic Appendix B: Supplementary Tables and Figures
Table B1. Summary Statistics of the Effects of Soil Compaction,Defoliation, Depth, and Their Interactive Effects on Community Weighted Mean (CWM) Body Length of Collembola and Acari under dry (June) and Waterlogged (September) ConditionsAccording to GLMM
Defoliation / Compaction / Defoliation * Compaction / Deptht / P / t / P / t / P / t / P
June / Collembola / 0-5cm / 2.43 / 0.04 / -3.34 / 0.009 / *
2011 / 5-10cm / *
Acari / 0-10cm / -4.39 / <0.001
September / Collembola / 0-10cm / -2.41 / 0.02 / -6.26 / <0.001
2011 / Acari / 0-10cm / -2.38 / 0.02 / -8.98 / <0.001
* A significant three-way interaction was found (t=3.28, P=0.007), therefore analyses were performed separately per stratum. Soil fauna was collected from soil cores using Tullgrenextraction.
Table B2. CWM Body Length(± standard error) of Collembola and AcariUnder the Five Treatments: Grazed, Control, Defoliation (D), Compaction (C), Defoliation and Compaction (D+C)
TreatmentGrazed / Control / D / C / D+C
June / Collembola / 0-5cm / 2.76(±0.68) / 1.27(±0.23)⁰ / 2.83(±0.60) / 1.83(±0.34) / 0.93(±0.13)*
5-10cm / 0.72(±0.01) / 0.99(±0.05)** / 1.05(±0.06)** / 0.99(±0.06)** / 1.05(±0.13)*
Acari / 0-5cm / 0.41(±0.02) / 0.39(±0.01) / 0.41(±0.01) / 0.40(±0.02) / 0.39(±0.01)
5-10cm / 0.33(±0.02) / 0.36(±0.03) / 0.38(±0.02) / 0.29(±0.03) / 0.36(±0.01)
September / Collembola / 0-5cm / 5.59(±0.17) / 3.16(±0.64)* / 3.23(±0.46)** / 2.11(±0.38)*** / 2.08(±0.68)**
5-10cm / 1.07(±0.33) / 1.08(±0.22)* / 0.88(±0.04)** / NA§ / NAδ
Acari / 0-5cm / 0.58(±0.05) / 0.48(±0.02) / 0.44(±0.02) / 0.41(±0.02)* / 0.42(±0.02)
5-10cm / 0.32(±0.07) / 0.35(±0.07) / 0.29(±0.03) / 0.23(±0.01)* / 0.32(±0.05)
§ absent in 5/8 of samples
δ absent in 7/8 samples
̊/*/**/*** indicate (marginally) significant difference from the grazed treatment:
̊P<0.1, * P<0.05, **P<0.01, ***P<0.001, NA: absent from most samples.
Fig. B1. Salt concentrations of the soil pore water as affected by defoliation, soil compaction and grazing. Soil samples were taken one year after treatments were applied. D: defoliation, C: soil compaction, D+C: defoliation plus compaction; ). */**/*** indicate significant difference from the grazed treatment:* P<0.05, **P<0.01, ***P<0.001
Fig. B2. Root mortality of the tall grassElytrigiaatherica caused by defoliation and soil compaction, 6 months after treatments were applied (March 2011).). */** indicate significant differences from the control treatment:* P<0.05, **P<0.01. For methodology, see Appendix A
Fig. B3. NMDS biplot of plant communities (based on estimated cover percentage of all species) two years after the start of the experimental treatments (defoliation and soil compaction) and adjacent salt marshes where grazing was instated three years previously.