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photosynthesis

Plants with thick, fleshy, pointed green leaves in the foreground, brown fossil in the background
Posted inNews

Small Shrubs May Have Played a Large Role in Decarbonizing the Ancient Atmosphere

by Meghie Rodrigues 9 February 20239 February 2023

Vascular plants may have contributed to shaping Earth’s atmosphere long before trees evolved.

Woods and wetlands in the Chequamegon-Nicolet National Forest.
Posted inResearch Spotlights

How Forest Structure Drives Productivity

by Jack Lee 20 July 202227 September 2022

Data from northern Wisconsin forest sites uncovered that vertical heterogeneity metrics are the most influential factors underlying rates of photosynthesis.

SEM images of coccolithophores
Posted inResearch Spotlights

Understanding the Calcium Carbonate Cycle in the North Pacific

by Aaron Sidder 7 July 20227 July 2022

Using data collected from Hawaii to Alaska, a new study sheds light on calcium carbonate cycling in the ocean, an understudied component of the global carbon cycle.

Scientists collect samples from algal mats dotting the surface of sea ice in the Arctic.
Posted inNews

Algal Mats May Be a Key to the Arctic Food Web

by Fanni Daniella Szakal 27 June 20226 January 2023

Melt ponds in sea ice have thriving algal communities with startlingly high levels of photosynthetic activity.

La Selva Biological Station, located in Costa Rica.
Posted inResearch Spotlights

Drop in Rain Forest Productivity Could Speed Future Climate Change

by Rachel Fritts 12 January 20227 July 2022

As temperatures rise, tropical forests will become more stressed and photosynthesize less.

World map showing trends of gross primary productivity, increasing in the northern latitudes and decreasing in the tropics
Posted inEditors' Highlights

Water Stress Controls the Capacity of the Terrestrial Carbon Sink

by A. Barros 17 December 20201 March 2023

Despite increased photosynthetic activity at northern latitudes in recent decades, plant productivity in tropical zones suffers because of water limitations.

Posted inEditors' Highlights

High Climatic Response of High-Latitude Forests

by E. Davidson 1 December 20207 July 2022

The seasonal amplitude of atmospheric CO2 is increasing, partly due to boreal forest responses to warming. Photosynthesis and expansion of boreal forests are shown here to be temperature-limited.

Satellite image of a phytoplankton bloom in the Barents Sea
Posted inResearch Spotlights

Most of the Arctic’s Microscopic Algae Are Chilling Under Ice

by Rachel Fritts 21 September 20208 February 2023

New research reveals that tiny single-celled organisms in the Arctic Ocean are growing more numerous as climate change thins the ice.

Aerial view of treetops, vegetation, and a stream in Puerto Rico
Posted inResearch Spotlights

In Vegetation Growth Studies, What You Measure Matters

by Morgan Rehnberg 27 July 20207 July 2022

Different satellite-based metrics for global vegetation coverage tell complementary, but not identical, stories.

Close-up view of Sargassum natans, a seaweed commonly found in the Gulf of Mexico
Posted inResearch Spotlights

Sunlight Stimulates Brown Algae to Release Organic Carbon

by Sarah Stanley 2 December 201927 September 2022

Sargassum and other brown algae might be an underappreciated contributor of organic compounds called polyphenols to the open ocean.

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Features from AGU Journals

RESEARCH SPOTLIGHTS
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“How to Build a Climate-Resilient Water Supply”
By Rachel Fritts

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“How Do Atmospheric Rivers Respond to Extratropical Variability?”
By Sarah Kang

EDITORS' VOX
Reviews of Geophysics
“Rare and Revealing: Radiocarbon in Service of Paleoceanography”
By Luke C. Skinner and Edouard Bard

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