Nitrate contamination of water is a worldwide environmental problem. Recent studies have
demonstrated that the nitrogen (N) and oxygen (O) isotopes of nitrate (NO 3−) can be used …

Nitrate contamination in aquatic systems is a widespread problem across the world. The
isotopic composition (δ 15 N, δ 18 O) of nitrate and their isotope effect (15 ε, 18 ε) can …

The Tibetan Plateau is sensitive to climate change, but the feedbacks of nitrogen (N) cycling
to climate conditions on this plateau are not well-understood, especially under varying …

Elevated nutrient inputs have led to increased eutrophication in coastal marine ecosystems
worldwide. An understanding of the relative contribution of different nutrient sources is …

This study addresses key processes in high-energy beach systems using an
interdisciplinary approach. We assess spatial variations in subsurface pore water residence …

Abstract Nitrate (NO 3−) pollution is a serious problem worldwide. Identification of NO 3−
sources and transformation processes in aquifers is a key step in effectively controlling and …

Nitrogen (N) pollution and the resulting eutrophication can have deleterious consequences
on estuaries, such as hypoxia, fish kills, and loss of biotic diversity. An understanding of N …

To date, basin-scale understanding of nitrogen (N) cycling is lacking, which undermines
riverine N pollution control efforts. Applying a multiple-isotopic approach, this study provided …

The effectiveness of these wetlands in removing nitrogen relies heavily on the biological
processes that control its removal. Here, we used δ 15 N and δ 18 O of nitrate (NO 3−) to …

Dissolved inorganic nitrogen (DIN), including nitrate, nitrite and ammonium, frequently acts
as the limitation for primary productivity. Our study focused on the transport and …