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nitrogen

Several moss-covered tree trunks surrounded by dense foliage and ferns.
Posted inResearch Spotlights

Carbon Sink Models Need Nitrogen

Rachel Fritts, Science Writer by Rachel Fritts 28 April 202328 April 2023

If terrestrial biosphere models don’t include nitrogen, they will overestimate carbon sequestration.

Maps of the Great Lakes region using different colors to show nutrient concentrations.
Posted inEditors' Highlights

Analyzing Sources of Pollution in the Great Lakes

by Luis Lassaletta 11 April 20237 June 2023

Understanding how agriculture and land use affect nutrient flows and concentrations in the vast area of the Great Lakes is an essential step to developing sustainable management strategies.

Flat green land with small ponds
Posted inNews

The Bering Land Bridge Formed Much Later Than Previously Thought

by Clara Chaisson 28 February 202328 February 2023

New research reconstructs the Bering Strait’s flooding history, raising surprising questions about human migration and how ice sheets form.

Tropical trees and ferns growing on a sloped landscape
Posted inResearch Spotlights

How Much Greenhouse Gas Do Tropical Soils Emit?

Sarah Derouin, Science Writer by Sarah Derouin 30 January 202321 February 2023

New research found that tropical soils emit nitrogen mostly as inert dinitrogen rather than as greenhouse gases.

Map of the Yukon-Kuskokwim Delta in Alaska
Posted inEditors' Highlights

The Burning Tundra

by Marguerite A. Xenopoulos 4 October 202219 January 2023

As wildfires blaze through the Arctic, scientists examine the role of landscape characteristics on wildfire ecosystem responses in northern aquatic ecosystems.

Flooding during June 2011 on the Missouri River floodplain near Arrow Rock, Mo.
Posted inResearch Spotlights

Missouri River Floodplain Expansion, Services, and Resiliency

Aaron Sidder, freelance science writer by Aaron Sidder 28 July 202221 September 2022

Benefits might accrue for both wildlife and climate resiliency if more floodplains along the lower Missouri River were allowed to flood.

Photos of clouds, forest and sea.
Posted inEditors' Vox

Inventorying Earth’s Land and Ocean Greenhouse Gases

by Benjamin Poulter, Ana Bastos, Josep G. Canadell, Philippe Ciais, Nicolas Gruber, Judith Hauck, Robert B. Jackson, Masao Ishii, Jens Daniel Müller, Prabir K. Patra and Hanqin Tian 17 February 20225 December 2022

A new special collection in AGU journals will present findings from the Second REgional Carbon Cycle Assessment and Processes (RECCAP2) study with a decade of data on greenhouse gas growth.

Field of dead and burned trees in the San Bernardino National Forest. Researcher Fabiola Pulido-Chavez stands among them with her back turned toward the camera.
Posted inNews

Wildfires May Alter the Nitrogen Cycle—and Air Pollution

by Krystal Vasquez 16 December 20217 July 2022

Research indicates that wildfires could be bolstering soil emissions of air pollutants that contribute to smog and climate change.

A grassy landscape next to a river and the ocean.
Posted inNews

A Global Map of Human Sewage in Coastal Ecosystems

Katherine Kornei, Science Writer by Katherine Kornei 3 December 202127 March 2023

Prodigious quantities of nitrogen from human waste flow into coastal waters, a study of nearly 135,000 watersheds reveals.

Posted inEditors' Highlights

What Controls Nitrous Oxide Emissions from Rivers?

by Nicolas Gruber 22 November 202128 March 2022

Statistical and numerical models show that denitrification efficiency is a key parameter controlling the production of N2O from rivers, providing a target for river restoration projects.

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A view of a bridge, with the New Orleans skyline visible in the distance between the bridge and the water. A purple tint, a teal curved line representing a river, and the text “#AGU25 coverage from Eos” overlie the photo.

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