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nitrogen

Chart showing composition of reactive nitrogen species in wildfire smoke at different locations
Posted inEditors' Highlights

Deciphering Reactive Nitrogen Emissions from Wildfire Smoke

by B. McDonald 5 February 202119 September 2022

In-situ data gathered from an aircraft flying over 23 western US wildfires in 2018 reveal the importance of reduced nitrogen, shedding insights on ozone and aerosol formation from wildfires.

Emerald green water laps against a gray and brown cliff face topped with trees
Posted inNews

The Legacy of Nitrogen Pollution

Kate Wheeling, freelance science writer by Kate Wheeling 21 October 202025 October 2021

Researchers track decades of nitrogen inputs and uptake across the United States, highlighting the need for policy to address the legacy effects of this essential nutrient and pollutant.

Photograph of a lake in northern Florida with degraded water quality and ecosystem damage
Posted inEditors' Vox

Exploring the Widespread Impacts of Ongoing Nitrogen Pollution

by B. G. Katz 23 September 202020 October 2021

The release of reactive nitrogen into the environment is having severe and ongoing ecosystem, economic, and human health impacts. How can we reduce our nitrogen footprint?

Four plots showing production of greenhouse gases during laboratory incubations in organic soils and mineral soils, with and without nitrogen addition.
Posted inEditors' Highlights

Downhill from Here: Landscape Positions and Greenhouse Emissions

by W. M. Hammond 5 August 202011 August 2022

In comparing soils from two tundra wetland landscape positions, landscape position is found to matter, and toeslopes are associated with higher greenhouse gas production.

Dark water and lighter-colored wave bubbles
Posted inNews

Shedding New Light on the Nitrogen Cycle in the Dark Ocean

Jon Kelvey, Science Writer by Jon Kelvey 6 May 202011 October 2022

Researchers find that the key players in nitrification may already be known.

A view of the San Juan Bay Estuary
Posted inResearch Spotlights

Linking Hydrology and Biogeochemistry in a Tropical Urban Estuary

Aaron Sidder, freelance science writer by Aaron Sidder 14 April 202010 February 2022

Low-lying coastal estuaries are intertwined with tropical cities around the world. Yet little is known about these water bodies, which affect millions of people globally.

Diagram of chemical dynamics of soil “frost boils” with an inset of a plant on rocky ground
Posted inResearch Spotlights

Floating Patches of Soil Nutrients in Soil Help Explain Arctic Thawing

by David Shultz 2 April 202029 September 2021

Nutrient-rich diapirs have a complex relationship with soil microbes and play an important role in carbon and nitrogen nutrient cycling, making them crucial for understanding feedbacks in the Arctic.

Beach on barrier island Spiekeroog in Germany
Posted inResearch Spotlights

Microbial Mechanisms Change with the Seasons

Elizabeth Thompson by Elizabeth Thompson 1 April 202012 October 2022

Microbes living in the sand on a barrier island alter the way they break down organic matter as their environment changes throughout the year, which has implications for the surrounding water column.

An aerial view of an agricultural landscape
Posted inResearch Spotlights

Mapping Nutrient Inputs in the Great Lakes Basin

Aaron Sidder, freelance science writer by Aaron Sidder 25 March 202024 February 2023

A new tool links nitrogen and phosphorus applications to land use classifications to better understand where and how much of the nutrients enter watersheds in the U.S. Great Lakes Basin.

Land use map of the Selke river catchment in central Germany
Posted inEditors' Highlights

New Isotope Model Predicts Denitrification from Riparian Zones

by D. Scott Mackay 13 January 202015 November 2022

A new model quantifies the relative contributions of denitrification and other processes of nitrogen uptake, such as by plants, from groundwater in riparian areas around streams.

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