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Biogeochemical cycles, processes, and modeling

Researchers examine South China Sea water samples to understand how dissolved black carbon is cycled through Earth’s oceans and atmosphere.
Posted inResearch Spotlights

Plumbing the Depths of the Marine Carbon Cycle

by S. Witman 21 November 2017

Scientists measure dissolved black carbon in South China Sea water samples to better understand the carbon cycle in the oceans, which absorb roughly half of all carbon emitted into the atmosphere.

Posted inEditors' Highlights

Improved Simulation of Gross Primary Productivity

by P. A. Dirmeyer 10 November 2017

A new model better explains seasonal variations in biomass.

Landsat 5 Thematic Mapper image of the northwestern corner of North Lake Eyre, Australia, after floods in March 2011.
Posted inScience Updates

Observing Life near the Ocean’s Surface with Satellites

by V. Stuart 30 October 2017

Third International Ocean Colour Science (IOCS) Meeting; Lisbon, Portugal, 15–19 May 2017

Researchers look at how land use changes affect carbon transport in the Thames River Basin
Posted inResearch Spotlights

The River Basin’s Tale: Carbon Transport Along the Thames

by S. Witman 22 September 2017

A study finds that population growth during urbanization and World War II–era plowing fed additional carbon into the Thames River Basin.

Marin Carbon Project rangeland
Posted inScience Updates

A New Platform for Managing Soil Carbon and Soil Health

by J. Loisel, A. Malhotra and C. Phillips 25 August 201729 September 2021

International Soil Carbon Network Workshop; Stanford, California, 27 February to 3 March 2017

A new study shows how effective coastal wetlands are at sequestering carbon
Posted inResearch Spotlights

Coastal Wetlands Effectively Sequester “Blue Carbon”

by S. Witman 21 August 2017

Mangrove forests, salt marshes, seagrass beds, and the like are carbon storage treasure troves.

A new study shows the role of small, still-water wetlands in combating algae growth.
Posted inResearch Spotlights

Small Wetlands Retain Lion’s Share of Nutrients

by S. Witman 31 July 201715 August 2017

Still-water ecosystems are key to combating explosive algae growth.

Researchers assess how the behavior of groundwater influences nitrogen cycling in streams.
Posted inResearch Spotlights

Changes in Groundwater Flow Affect Nitrogen Cycling in Streams

by Sarah Stanley 30 June 2017

Overpumping and other activities that affect groundwater levels could combine with increased nitrogen runoff to amplify threats to human and environmental health.

Researchers try to better model the role of Arctic plants on nitrogen uptake.
Posted inResearch Spotlights

Tracking Nitrogen in Arctic Plants

by Elizabeth Thompson 20 June 2017

Prevailing nutrient uptake models do not fit Arctic plants. Scientists test a new option that overcomes older models’ shortcomings.

Streams and rivers play an important role in the exchange of carbon dioxide between terrestrial ecosystems, atmosphere, and ocean.
Posted inResearch Spotlights

Why Is There So Much Carbon Dioxide in Rivers?

by S. Witman 19 May 2017

Observations of carbon dioxide oversaturation in the freshwater of the world led scientists to study its underlying causes at more than 100 field locations across the nation.

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