Abstract. Microorganisms carrying out denitrification in marine anoxic zones drive bioavailable nitrogen loss. Sequencing datasets have demonstrated the mo

Synthetic fertilizer use has perturbed the global nitrogen cycle by increasing reactive nitrogen inputs to terrestrial systems. This Review synthesizes estimates of global nitrogen pools and fluxes si...

The American Society of Naturalists (ASN) gives out student research awards (generally $2000 each) to support activities of our student members. We request that Student Research Award recipients provi...

Nitrite, a key player in the ocean’s nitrogen cycle, accumulates in deoxygenated waters for reasons that remain unclear. Our chemostat and three-dimensional models showed that competition amongst aero...

Despite being consumers, nitrite-oxidizing bacteria contribute to the accumulation of nitrite in marine oxygen minimum zones through interactions with other microbes, in particular denitrifiers, accor...

Despite being consumers, nitrite-oxidizing bacteria contribute to the accumulation of nitrite in marine oxygen minimum zones through interactions with other microbes, in particular denitrifiers, accor...

In the shadowy layers of the Pacific, microbes decide how much nitrous oxide—a potent greenhouse gas—rises skyward. New research from Penn’s Xin Sun offers an improved understanding of microbial ecolo...

In the shadowy layers of the Pacific, microbes decide how much nitrous oxide—a potent greenhouse gas—rises skyward. New research from Penn’s Xin Sun offers an improved understanding of microbial ecolo...

Experiments and modelling unravel mechanisms of nitrous oxide production from nitrate, the primary nitrous oxide production pathway in oxygen minimum zones. Results highlight the critical role of microbial interactions in regulating this pathway.

Honoring Jane Goodall's life, Pope Leo's first climate address, and finding hope in action

Job #AJO30209, WDR-00054090 Assistant Professor Forest Ecosystem Sustainability, Department of Natural Resources and the Environment, Cornell University, Ithaca, New York, US

Nitrogen (N) cycling in aquatic ecosystems—both marine and freshwater—is fundamental to ecosystem productivity, biogeochemical fluxes, and food web structure. At the base of these systems, primary pro...

Microorganisms in marine oxygen minimum zones (OMZs) drive globally impactful biogeochemical processes. One such process is multistep denitrificati...

Anaerobic metabolisms are thought to dominate nitrogen cycling in anoxic marine zones (AMZs). However, thriving populations of aerobic nitrite-oxidizing bacteria (NOB) in AMZs challenge this assumptio...

Denitrification is a crucial multi-step process for ecosystem productivity and sustainability because some of its steps can result in the loss of the

Proceedings of the National Academy of Sciences (PNAS), a peer reviewed journal of the National Academy of Sciences (NAS) - an authoritative source of high-impact, original research that broadly spans...