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Global Biogeochemical Cycles

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Microscope image of several types of dinoflagellates
Posted inResearch Spotlights

The Role of Midsized Phytoplankton in Earth’s Biological Pump

Kate Wheeling, freelance science writer by Kate Wheeling 4 February 202127 September 2022

New research finds that nanoplankton may have a larger influence on carbon cycling than previously thought.

A bunch of jellyfish
Posted inResearch Spotlights

El Zooplancton Gelatinoso Transfiere Una Cantidad Significativa de Carbono a las Profundidades del Océano

Rachel Fritts, Science Writer by Rachel Fritts 18 December 20209 November 2022

Un nuevo estudio muestra que las medusas y las salpas marinas no reciben el crédito que merecen por su papel en el ciclo del carbono en el océano.

A large swirling plankton bloom is seen in the Gulf of Alaska in this satellite image taken in June 2016
Posted inResearch Spotlights

A Promising Development for Detecting Ocean Productivity

by Terri Cook 3 November 202027 September 2022

A comparison of primary productivity measurements across the North Pacific Ocean demonstrates the potential for using autonomous instruments to discern effects of climate change on the marine food web.

View of sea ice and part of the West Antarctic Peninsula from just offshore, with the bow of a research ship in the foreground
Posted inResearch Spotlights

How Long Does Iron Linger in the Ocean’s Upper Layers?

Elizabeth Thompson by Elizabeth Thompson 26 October 202028 January 2022

A new study refines our understanding of marine residence times of iron, which supports carbon-sequestering sea life, offering valuable data to inform biogeochemical models.

A bunch of jellyfish
Posted inResearch Spotlights

Jellies Transfer a Significant Amount of Carbon to the Deep Ocean

Rachel Fritts, Science Writer by Rachel Fritts 14 October 202016 March 2023

Jellyfish and sea salps aren’t getting the credit they deserve for their role in ocean carbon cycling, according to a new study.

Underwater bubbles rise toward the water surface
Posted inResearch Spotlights

Deep-Ocean Oxygen May Increase with Climate Change

Kate Wheeling, freelance science writer by Kate Wheeling 17 September 202028 March 2023

A millennial-scale ocean simulation indicates that oxygen gains in the deep ocean may offset oxygen losses in the upper water layer under a protracted climate change scenario.

Satellite imagery showing a dust cloud spanning the tropical North Atlantic on 20 June 2020
Posted inResearch Spotlights

Trans-Atlantic Dusts May Not Enrich Amazon as Much as Thought

by David Shultz 16 September 20202 November 2021

New research indicates that nutrient loads delivered to South American ecosystems by dust originating in Africa are far lower than suggested in previous studies.

A black-and-white collage of microscopic images of different Rhizaria
Posted inResearch Spotlights

New Recognition for Major Players in the Ocean’s Silicon Cycle

Sarah Stanley, Science Writer by Sarah Stanley 16 April 202012 October 2022

Tiny, shelled protists known as Rhizaria may be responsible for up to one fifth of the total amount of silica produced by the world’s oceanic organisms.

Microscopic image of a Chaetoceros large-cell diatom
Posted inResearch Spotlights

New Models Give Global Picture of Mercury Content in Oceans

by David Shultz 30 March 20205 June 2023

Concentrations of methylated mercury in high latitudes show the importance of sunlight and biological activity for cycling the metal.

Swirls of photosynthetic algae thrive in the Arabian Sea in February 2015.
Posted inResearch Spotlights

Anaerobic Activity Is a Big Contributor in Marine “Dead Zones”

Sarah Stanley, Science Writer by Sarah Stanley 17 January 20202 March 2023

Climate models that do not account for anaerobic microbial activity may underestimate future expansion of oxygen-depleted waters.

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