Silver Ecotoxicity Estimation by the Soil State Biological Indicators

Table 2

Assessment of biological indicators of soil condition during silver contamination in terms of sensitivity and informative value.

Indicator	Sensitivity^1	Informative value^2
Number of bacteria	66	−0.72
The abundance of bacteria of the genus Azotobacter	92	−0.99
Catalase activity	91	−0.76
Activity of dehydrogenases	84	−0.99
Length of the radish roots	89	−0.86
IIBS	85	−0.91

¹The sensitivity of the indicator is the degree of decrease in the biological indicator when the soil is contaminated with silver, % of the control (values are averaged over the doses and terms of pollution). ²The indicator informative value is the correlation coefficient (r) between the content of silver in the soil and the biological indicator (=0.05).