Diego Barcellos

Introduction Click to copy section linkSection link copied! Redox variability is ever present in soils (1−3) and drives critical biogeochemical transformations of iron (Fe), methane (CH4), and other compounds. (4−7) This is most evident in the spatial redox heterogeneity that emerges within microsites and along flow paths and can yield vastly different redox conditions of soil locales separated by a cm or less.

Introduction Click to copy section linkSection link copied! Redox variability is ever present in soils (1−3) and drives critical biogeochemical transformations of iron (Fe), methane (CH4), and other compounds. (4−7) This is most evident in the spatial redox heterogeneity that emerges within microsites and along flow paths and can yield vastly different redox conditions of soil locales separated by a cm or less.

Abstract The Rio Doce estuary was critically impacted in 2015 by the world largest mining tailing spill, with still unclear long-term effects on the aquatic biota. Here we present a long-term (2015 to 2020) assessment of estuarine benthic assemblages, where we demonstrate that despite a decline in the absolute concentrations of potentially toxic elements; enrichment factors are still above pre-impact conditions in the estuary.