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biogeosciences

A person standing on a boat is overlooking blue water with yellow seaweed on its surface.
Posted inNews

The Northern Sargasso Sea Has Lost Much of Its Namesake Algae

Katherine Kornei, Science Writer by Katherine Kornei 8 January 202612 January 2026

There’s less than a tenth as much Sargassum as there was a few years ago, a shift that may be linked to increasing sea surface temperatures in the Gulf of Mexico.

Microscopic marine algae known as coccolithophores covered in calcium carbonate shells.
Posted inResearch Spotlights

How a Move to the Shallows 300,000 Years Ago Drove a Phytoplankton Bloom

by Nathaniel Scharping 5 January 20265 January 2026

And what that could mean for today’s ocean.

Contra un fondo gris, hebras de organismos verdes multicelulares brillan bajo una luz artificial.
Posted inNews

Las olas de calor marinas lentifican el flujo de carbono de los océanos

by Mack Baysinger 5 January 20265 January 2026

Cuando el plancton se encuentra en agua caliente, la materia orgánica se estanca en la superficie e interrumpe el transporte de carbono hacia el fondo océanico.

A white butterfly with black spotted markings rests with spread wings on bright red flowers.
Posted inNews

Climate Change Could Drive Butterflies and Plants Apart

Kimberly M. S. Cartier, News Writing and Production Intern for Eos.org by Kimberly M. S. Cartier 19 December 202519 December 2025

Insects and the plants they depend on are migrating in response to climate change, but not always in the same way.

An aerial image shows a green, grassy area where there are large rectangular indentations in the ground. Trees are visible on either side of the frame, and a road is visible on the left.
Posted inNews

How Ancient Indigenous Societies Made Today’s Amazon More Resilient

by Sofia Moutinho 18 December 202518 December 2025

Portions of the forest managed by pre-Columbian populations hold higher biomass and are more able to withstand climate change.

A backward C-shaped swirl of milky blues and greens appears against a deep blue background. In the foreground, toward the edges of the image, clouds appear as white patches.
Posted inResearch Spotlights

Wintertime Spike in Oceanic Iron Levels Detected near Hawaii

Sarah Stanley, Science Writer by Sarah Stanley 11 December 202511 December 2025

Seasonal rainfall and runoff of sediments from the Hawaiian Islands could be responsible for the previously undetected peak.

Nine researchers pose for a photo outside a concrete building with a sign reading “Bolinao Marine Laboratory, The Marine Science Institute, University of the Philippines.”
Posted inNews

A Cryobank Network Grows in the Coral Triangle

by J. Besl 5 December 20251 January 2026

As the ocean becomes increasingly inhospitable for corals, researchers in the Coral Triangle are turning to cryopreservation to freeze, thaw, and save the region’s hundreds of coral species.

Zebras and wildebeest graze on the green grass of the Serengeti plain.
Posted inNews

Tracing Fire, Rain, and Herbivores in the Serengeti

by Rebecca Owen 2 December 20252 December 2025

Increasing amounts of rain fuel grass growth across the ecosystem and, consequently, the cycles of wildfire and animal migration.

A red horse stands in a marsh, up to its knees, and looks back at the camera.
Posted inNews

What Salty Water Means for Wild Horses

by Rebecca Owen 21 November 202526 November 2025

New research monitors how saltwater intrusion is affecting the behaviors of Shackleford Banks’s wild horses.

Against a gray background, strands of multicellular green organisms glow in artificial light.
Posted inNews

Marine Heat Waves Slow the Ocean’s Carbon Flow

by Mack Baysinger 3 November 20255 January 2026

When plankton find themselves in hot water, organic matters stalls at the surface and disrupts transport of carbon to the deep ocean.

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