In soils with mercury contamination, the most common types of bacteria belong to groups called Pseudomonadota, Bacteroidota, Bacillota, Acidobacteriota, and Actinomycetota.

In soils with mercury contamination, the most common types of fungi belong to groups called Ascomycota and Basidiomycota.

The bacteria Burkholderia and Pseudomonas are more common in soils with higher levels of total mercury and methylmercury.