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biogeochemistry

A rosette water sampler hangs from a cable above the Arctic Ocean surface near some sea ice
Posted inResearch Spotlights

Tracking Trace Elements Across the Arctic Ocean

Kate Wheeling, freelance science writer by Kate Wheeling 8 April 202023 January 2023

Researchers used data from a pan-Arctic survey of carbon and trace elements to better understand how climate change will affect primary production in one of the fastest warming regions of the world.

A stream running through a forest
Posted inNews

The Shape of Watersheds

Hannah Thomasy, Science Writer by Hannah Thomasy 21 January 20201 March 2023

Streams in flatter watersheds have carbon cycles more sensitive to temperature increases.

Magnetite levels in the human brain
Posted inNews

Human Brains Have Tiny Bits of Magnetic Material

Jenessa Duncombe, Staff Writer by Jenessa Duncombe 12 December 201927 March 2023

Here’s the first map of the magnetic mineral magnetite in the human brain. Turns out that our brain stem may be full of it.

Marine biogeochemists at a workshop last summer huddle over a biogeochemical instrument they are learning to use.
Posted inScience Updates

Training the Next Generation of Marine Biogeochemists

by A. P. Palacz, M. Telszewski, G. Rehder and H. C. Bittig 6 November 20197 March 2023

Early-career scientists came together recently to learn to use a suite of ocean biogeochemical sensors, with the goal of closing the knowledge gap between ocean technology and potential end users.

Petri dishes, each marked Geotraces
Posted inResearch Spotlights

Big Data Help Paint a New Picture of Trace Element Cycling

by Terri Cook 29 May 201911 October 2022

A new framework for understanding the suite of processes acting on marine particulate trace metals exemplifies how alternative analyses can maximize the information that large data sets provide.

Charred trees in the aftermath of a fire in Mali
Posted inResearch Spotlights

A 192,000-Year Record of Northwest African Fire History

by Terri Cook 19 March 20197 October 2021

Biomarker analyses from an offshore sediment core suggest that increased fire occurrence around 55,000 years ago coincided with increased fuel loads and human settlement in this region.

Neanderthal and human skull
Posted inNews

Neanderthals Likely Ate Rotten Meat

Jenessa Duncombe, Staff Writer by Jenessa Duncombe 10 December 201821 July 2022

Neanderthals have long been painted as meat-eating machines. But could a new look at a dietary proxy and how it changes when meat rots uncover insights into what these extinct hominids really ate?

Posted inEditors' Highlights

What Lies and Waits Beneath Lake Ice?

by Ankur R. Desai 26 September 201824 February 2023

Rarely made detailed measurements of carbon dioxide and methane under lake ice reveal a story more complex than simple models of gas buildup, with surprising findings for climate change impacts.

Aerial image of reeds and duckweed in reservoir
Posted inOpinions

Human Activities Create Corridors of Change in Aquatic Zones

by T. S. Bianchi and E. Morrison 30 August 201830 September 2021

Canals, dammed reservoirs, irrigation ditches, and pollution are changing species diversity, microbial communities, and nutrient levels in aquatic zones across the planet.

A new project is compiling and synthesizing a database of natural archive isotope records to study the hydroclimate.
Posted inScience Updates

Piecing Together the Big Picture on Water and Climate

by B. Konecky, L. Comas-Bru, E. Dassié, Kristine DeLong and J. W. Partin 6 April 20187 October 2021

A new database brings together water isotope data from many sources, providing an integrated resource for studying changes in Earth’s hydroclimate over the past 2,000 years.

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