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Journal of Geophysical Research: Biogeosciences

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An algal bloom covers the surface of Lake Vansjø in Norway near the shore as children board canoes.
Posted inResearch Spotlights

Stored Nutrients and Climate Warming Will Feed More Algal Blooms

Elizabeth Thompson by Elizabeth Thompson 6 January 20206 June 2022

High nutrient concentrations cause water quality problems in lakes, and as the climate warms, these issues will only get worse. A new model assesses future scenarios and explores solutions.

A researcher collects a soil core from a marine coastal ecosystem dominated by the seagrass Posidonia oceanica.
Posted inResearch Spotlights

Improving Estimates of Coastal Carbon Sequestration

Sarah Stanley, Science Writer by Sarah Stanley 5 December 20199 March 2023

A new two-model approach could reduce uncertainties in calculated rates of “blue carbon” accumulation within soils of seagrass, tidal marsh, and mangrove habitats.

An instrument tower stands at the University of Michigan Biological Station, where researchers measured stable isotopic signals in water vapor amid two plots of forest.
Posted inResearch Spotlights

How Forest Structure Influences the Water Cycle

Kate Wheeling, freelance science writer by Kate Wheeling 15 October 20192 November 2021

New research looks at how changes in the arrangement of trees and canopy thickness influence the transport of water from the land surface to the atmosphere.

Aerial view over the Alaskan tundra showing patches of snow, ice, and bare land
Posted inResearch Spotlights

Methane-Releasing Tundra Soils Freezing Later Each Year

Sarah Stanley, Science Writer by Sarah Stanley 18 September 201911 August 2022

Scientists find links between delayed freezing of Alaskan soils and higher atmospheric methane concentrations during the cold season.

Flowchart showing summary of options to analyze time trends in tree ring data
Posted inEditors' Highlights

The Many Intertwined Stories of Tree Rings

by Ankur R. Desai 5 September 201926 August 2019

Trees grow as they age, but it’s not straightforward to tease out how that growth changes over a century of environmental change.

The Sun sets over Lake Shinji in western Japan
Posted inResearch Spotlights

How Land Use Affects Nutrient Pollution in a Changing Climate

Elizabeth Thompson by Elizabeth Thompson 4 September 201916 February 2022

As heavy rain falls more frequently, the land alongside a river has a greater effect on the waterway’s nutrient levels—for better or worse.

Spatial cluster analysis of carbon uptake in Mexico
Posted inEditors' Highlights

Stocking a Proper Buffet for a Megadiverse Smorgasbord

by Ankur R. Desai 19 July 201924 February 2023

Mexico’s megadiverse biota challenge observation network design for efficient sampling, but novel methods can provide guidance and tests of representativeness.

Photo of a river limned by marshlands
Posted inResearch Spotlights

Tracking Dissolved Organic Matter in Coastal Ecosystems

Elizabeth Thompson by Elizabeth Thompson 6 June 201926 March 2024

Dissolved organic matter supports aquatic food webs and holds as much carbon as the atmosphere. A new study tracks which sources and processes play the biggest role in coastal systems.

Tracers of ecosystem respiration
Posted inResearch Spotlights

Understanding Stream Metabolism with Reactive Tracers

Aaron Sidder, freelance science writer by Aaron Sidder 29 April 20197 March 2022

When the blue dye resazurin encounters living microorganisms, it transforms into fluorescent pink resorufin and helps scientists understand ecosystem respiration, but it has its limitations.

Scientists collect water samples in Antarctica.
Posted inResearch Spotlights

Antarctica’s Seasonal Streams Contribute Iron to the Ross Sea

by Terri Cook 22 April 201925 August 2022

Analysis of nutrient concentrations in four streams that discharge to the Southern Ocean indicates they are important sources of iron and phosphorous for coastal phytoplankton communities.

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Unveiling Atmospheric Circulation on Mars with Magnetic Field Data 

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AGU Launches New Special Collection at the Nexus of Science and Policy

3 September 20263 September 2026
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