Geo-Bip Hazards in the Arctic Region

Microbes play important roles in acid and metal release from sulfate soils but the extent or mechanisms of the environmental risks are poorly understood as only recently has it been possible to study the structure and functions of diverse microbial communities by utilizing next generation sequencing and other modern molecular methods. The impacts of microbiota in geochemical processes of the sub-Arctic soils have not been investigated and the effect of low temperatures with long periods of sub-zero soil temperatures are poorly understood.

The objectives of this study are

1) To link bacterial community structure with geochemical factors in soil.

2) Investigate the role of different bacterial groups in acid production and metal dissolution from acid sulfate soils.

3) Identify novel bacteria linked to the oxidation of sulfides and to provide the basis for future studies which will guide strategies to prevent threats to ecosystem health, food production and human exposure to metals.