Synthetic fertilizers and raw or composted livestock manure are typical nitrogen (N) sources
in intensive cropping and livestock-farming systems. The distinct N isotope ratios (15 N/14 N …

Abstract The nitrate (NO 3−) contamination of karst aquifers as an important drinking water
reservoir is increasing globally. Understanding the behavior of nitrogen (N) in karst aquifers …

Nitrate is one of the most common pollution sources in groundwater, particularly in highly
vulnerable karst aquifers. The potential for nitrification and denitrification within karst …

A national survey identifies the extent and origin of nitrates in New Zealand's freshwater
resources using nitrogen (δ 15 N) and oxygen (δ 18 O) isotopes. A comprehensive database …

Shallow groundwater nitrate nitrogen (NO 3−-N) concentrations in agricultural areas usually
show high spatial and intra-annual variability. It is hard to predict such concentrations due to …

This study characterized nitrate-nitrogen (NO 3–N) concentrations in groundwater and
stream water in an agricultural head watershed in South Korea and identified the pollution …

Wetlands can increase resilience to extreme climatic events and have a key role in
protection and water quality improvement in coastal ecosystems. Studies in tropical coastal …

Although evidence has indicated that the biogeochemical coupling of Fe and N redox
reactions has potentially important impacts on the cycling of N in the environment, the …

Groundwater under industrial sites is characterised by heterogeneous chemical mixtures,
making it difficult to assess the fate and transport of individual contaminants. Quantifying the …

Anthropogenic nutrient discharge to coastal marine environments is commonly associated
with excessive algal growth and ecosystem degradation. However in the world's largest …