Publications by authors named "Erin C Berns"
Article Synopsis
- Warming temperatures in Arctic permafrost zones are altering hydrological and geochemical conditions, impacting carbon cycling by heterotrophic microbes, particularly in areas with polygonal features formed by ice wedges.
- The study quantifies carbon dioxide (CO) and methane (CH) release from high center polygons (HCPs) through lab incubations at various temperatures, revealing important differences in gas emissions between HCP center and trough soils.
- Results show that soil conditions like water availability and organic carbon content significantly affect gas production, with HCP trough soils producing more CH and having methanogens present, while CO emissions vary over time in HCP soils.
Low permeability source zones sustain long-term trichloroethene (TCE) groundwater contamination. In anaerobic environments, TCE is transformed by both biological reductive dechlorination and abiotic reactions with reactive minerals. Little is known about the relative contribution of these two pathways as TCE diffuses from low permeability zones (LPZs) into high permeability zones (HPZs).
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