Widespread deoxygenation of freshwater ecosystems regularly reversed by nutrient management (opens in new tab)

Dissolved oxygen concentrations regulate diverse aquatic ecosystem processes from organismal respiration to biogeochemical cycles, yet concentrations have declined markedly in flowing and standing waters in Europe and North America during recent decades. While atmospheric warming partially explains this deoxygenation, land-use changes such as farming and urbanization have also intensified depletion of dissolved oxygen, which suggests that improved land management could prevent widespread oxyg...