Levels of dissolved trace and heavy metals, which can be toxic, are highly variable across the river basin, concentrating in urban areas with high pollution but diluted by inflow from tributaries.
Using satellites to detect cyanobacterial algal blooms can foster faster decision-making that reduces harm to public health as well as associated costs.
Papers are invited for a new cross-journal special collection presenting advances in understanding the physical and biogeochemical processes associated with landscape fires and their impacts.
A revised definition of which waters can be protected from pollution by the federal government ignores established science.
A new model quantifies the relative contributions of denitrification and other processes of nitrogen uptake, such as by plants, from groundwater in riparian areas around streams.
DDT and its breakdown products permeate lake sediments decades after the pesticide was banned.
The drugs can lead to drug-resistant bacteria and deadly infections.
When the blue dye resazurin encounters living microorganisms, it transforms into fluorescent pink resorufin and helps scientists understand ecosystem respiration, but it has its limitations.
Low-cost, open-source data collectors and a suite of collaborative online tools are making big leaps in the field of watershed monitoring.
Clear air policies have led to dramatic reductions in acid rain and improved ecosystem health, but it now appears that climate change could counteract those gains.