Depth-partitioned nitrogen uptake sustained by ammonium in a nitrate-rich reservoir

Key Points

• Nitrogen uptake is enhanced by ammonium even in nitrate-rich environments, demonstrating a unique physiological adaptation.
• The analysis shows that this depth-partitioned nitrogen uptake occurs at varying depth levels, optimizing resource use.
• Assessment of nitrogen dynamics reveals a strong interdependence between ammonium and nitrate availability in aquatic systems.
• These findings highlight the need for further research on nutrient cycling in freshwater reservoirs for ecosystem management.