Increasing incidences of eutrophication and groundwater quality impairment from
agricultural nitrogen pollution are threatening humans and ecosystem health. Minimal …

Submarine groundwater discharge (SGD) links terrestrial and marine systems, but has often
been overlooked in coastal nutrient budgets because it is difficult to quantify. In this Review …

The increased use of hydropower is currently driving the greatest surge in global dam
construction since the mid-20th century, meaning that most major rivers on Earth are now …

This paper is the outcome of a community initiative to identify major unsolved scientific
problems in hydrology motivated by a need for stronger harmonisation of research efforts …

Growing populations and agricultural intensification have led to raised riverine nitrogen (N)
loads, widespread oxygen depletion in coastal zones (coastal hypoxia) and increases in the …

One of the largest human‐caused areas of bottom‐water oxygen deficiency in the coastal
ocean is on the northern Gulf of Mexico continental shelf adjacent to the Mississippi River …

Harmful cyanobacterial blooms (CyanoHABs) are linked to increasing anthropogenic
nitrogen (N) and phosphorus (P) inputs. However, CyanoHABs in many large lakes continue …

Water security is a top concern for social well-being, and dramatic changes in the availability
of freshwater have occurred as a result of human uses and landscape management …

Clarifying the biogeochemical mechanism of nitrate (NO 3−) in the vadose zone-
groundwater system, particularly in agricultural contexts, is crucial for mitigating groundwater …

Over the past 30 years concerted campaigns have been undertaken to reverse nutrient-
driven eutrophication in coastal waters in Europe, North America, Asia, and Australia …