Abstract Sulphate (SO 4 2-) concentrations in freshwaters have increased globally over the
last decades even though a strong reduction in atmospheric sulphur (S) deposition has …

Background Knowledge of biological and climatic controls in terrestrial nitrogen (N) cycling
within and across ecosystems is central to understanding global patterns of key ecosystem …

Livestock manure wastewater, containing high level of ammonia, is a major source of water
contamination, posing serious threats to aquatic ecosystems. Because ammonia is an …

Biogeochemical processes controlling nitrate attenuation in aquifers are critically reviewed.
An understanding of the fate of nitrate in groundwater is vital for managing risks associated …

Denitrification is a critical process regulating the removal of bioavailable nitrogen (N) from
natural and human‐altered systems. While it has been extensively studied in terrestrial …

Denitrification, the reduction of the nitrogen (N) oxides, nitrate (NO3−) and nitrite (NO2−), to
the gases nitric oxide (NO), nitrous oxide (N2O), and dinitrogen (N2), is important to primary …

Vidon, Philippe, Craig Allan, Douglas Burns, Tim P. Duval, Noel Gurwick, Shreeram
Inamdar, Richard Lowrance, Judy Okay, Durelle Scott, and Steve Sebestyen, 2010. Hot …

Denitrification, the anaerobic reduction of nitrogen oxides to nitrogenous gases, is an
extremely challenging process to measure and model. Much of this challenge arises from …

Reduction/oxidation (redox) conditions in 15 principal aquifer (PA) systems of the United
States, and their impact on several water quality issues, were assessed from a large data …

Chemical data from 43 334 wells were used to examine the role of land surface–soil–aquifer
connections in producing elevated manganese concentrations (> 300 μg/L) in United States …