Fig. 2From: Low concentration effects and different outcome in repeated reproduction tests with silver nanoparticles, silver nitrate and Folsomia candida (Collembola)F. candida reproduction in soil spiked with AgNP and AgNO3 during four repeats. Mean values of juveniles (a), Adults’ size and retrieved adults (b) ± SE, (n = 6) are shown. Asterisks indicate statistically significant differences of original data to controls and asterisks with line show statistically significant between AgNO3 and AgNP (*p ≤ 0.05, **p < 0.01 **p ≤ 0.001)Back to article page