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harmful algal blooms

A beach in the Florida Keys
Posted inNews

Shallow Injection Imperfectly Filters Florida Wastewater

by Caroline Hasler 26 September 202526 September 2025

Injection of wastewater into shallow wells is meant to filter nutrients like nitrogen and phosphorus out of the wastewater. But a new study suggests that nutrients aren’t entirely eliminated—and may be polluting coastal waters.

Two people on the deck of a boat around sunset reach for an instrument—almost as tall as they are—being raised up over the side of the ship from underwater.
Posted inNews

Cruise to Measure Gulf Dead Zone Faces Stormy Funding Future

by Elise Plunk 5 September 20258 September 2025

Funding cuts are affecting The Pelican’s annual hypoxia cruise to investigate the environmental conditions off the coast of Louisiana.

A satellite image of a river becoming a fan-shaped delta and then draining into the ocean.
Posted inResearch Spotlights

Arctic Rivers Trade Inorganic Nitrogen for Organic

by Saima May Sidik 6 August 20256 August 2025

Climate change is shifting the makeup of a key nutrient in rivers across Russia, Alaska, and Canada, with the potential for ecosystem-wide impacts.

Satellite view of swirling blooms of green algae and cyanobacteria in the Baltic Sea near the Swedish island of Gotland
Posted inFeatures

Could Bubbling Oxygen Revitalize Dying Coastal Seas?

by Caroline P. Slomp and Andreas Oschlies 1 May 20257 May 2025

Reoxygenation approaches have shown some success in lakes, but their potential risks must be examined carefully before they’re implemented as solutions to improve the health of coastal waters.

A river flowing through a forest.
Posted inEditors' Highlights

As the River Flows the Colors Sparkle

by Marguerite A. Xenopoulos 6 August 20245 August 2024

Diving into the science behind river color and its relationship with flow.

A person with a mask on walking through a smog covered parking lot.
Posted inEditors' Vox

OneHealth, Climate Change, and Infectious Microbes

by Antarpreet Jutla, Gabriel Filippelli, Katherine D. McMahon, Susannah G. Tringe, Rita R. Colwell, Helen Nguyen and Michael J. Imperiale 31 January 20249 September 2024

AGU and ASM welcome submissions to a joint special collection focusing on the impacts of climate change and microbes on human well-being.

A red tide washes over a Florida beach.
Posted inFeatures

Florecimientos de algas nocivas: nada bueno, solo lo malo y lo feo

by James E. Silliman 20 July 202320 July 2023

Diversos factores humanos y naturales están generando florecimientos de algas nocivas cada vez más frecuentes y prolongados. Estudios recientes han comenzado a revelar la magnitud del problema y nos informan sobre soluciones potenciales.

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.

Aerial view of tributaries entering a larger river with an inset close-up of aquatic plants
Posted inResearch Spotlights

High-Frequency Monitoring Reveals Riverine Nitrogen Removal

by Saima May Sidik 25 October 202226 October 2022

Years of daily readings provide an unprecedented view into how a submerged aquatic meadow kept nitrogen from reaching the St. Lawrence Estuary as well as insights on how climate change may alter it.

A red tide washes over a Florida beach.
Posted inFeatures

Harmful Algal Blooms: No Good, Just the Bad and the Ugly

by James E. Silliman 9 September 202214 September 2022

Natural and human factors are leading to larger, more frequent, and longer-lasting algae blooms. Recent research is increasingly revealing the scope of the problem and informing potential responses.

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Research Spotlights

Unveiling What’s Under the Hood in AI Weather Models

30 September 202530 September 2025
Editors' Highlights

New Evidence for a Wobbly Venus?

29 September 202525 September 2025
Editors' Vox

All Publish, No Perish: Three Months on the Other Side of Publishing

29 September 202525 September 2025
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