Earthworms as biomarkers for detecting soil pollution around swine farms in Timiș County

Abstract

By using several samples collected from different farms distances it can be determined the degree of farms pollution and their effects on ecosystems. In order to avoid any error the soil samples were tested in comparison with a control soil sample, used as a reference, considered animal waste pollution free. The registration of survival rate for each testing recipient and for each soil along five repeats was a critical control point of testing. The 11 identified soil types were tested in comparison with a clean reference soil, by using 275 test earthworms and 55 control earthworms. According to normality Kolmogorov- Smirnov test the mortality was analyzed and results were significant (p=0.046)