Nitrogen Loss Processes and Nitrous Oxide Turnover in Oceanic Oxygen Minimum Zones

Explore the critical processes of nitrogen loss and nitrous oxide turnover in oceanic oxygen minimum zones through this 43-minute lecture from the 2014 AGU Fall Meeting. Delve into the essential role of nitrogen in ecosystems and the delicate balance between nitrogen deficiency and excess. Examine the recent discoveries in nitrogen loss processes in the open ocean, including denitrification and anaerobic ammonium oxidation (anammox). Understand how organic matter composition influences the ratio of these processes and their impact on nitrous oxide biogeochemistry. Investigate the significance of nitrous oxide as a contributor to ozone destruction and greenhouse warming. Analyze direct measurements and modeling results of N2O production and consumption in the ocean, revealing the complex physical and biological controls on N2O fluxes.