Additional files [RJEE Vol. 6 (3). 2021 – 4]

• Fig. 1. Impact intensity of the earthworm species (ln (soil property/control property) on the cationic composition of soils. Comparisons within the earthworm species are indicated with small letters. The variants with various letters are significantly different (α = 0.05). The dotted line represents the zero effect of earthworms (ln = 0). A significant difference from 0 was verified using the t-test of each sampling and is indicated as follows (“*” – p <0.05; “**” – p <0.01; “*** ” – p <0.001)
• Fig. 2. The factorial planes and the corresponding correlation vectors (combined with the plane) in assessing the influence of 3 earthworm species on changes in the soil cationic content by PCA. A – Cal, B – Gre, C – Hap. Polygons: light grey − E. nordenskioldi; grey – L. rubellus; dark grey – E. nana. Percentage of the total inertia for each axis is shown in brackets