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Phosphorus-limited conditions in the early Neoproterozoic ocean maintained low levels of atmospheric oxygen

Early Neoproterozoic marine productivity fell due to nutrient drawdown following a switch from an iron-rich to a sulfide-rich ocean, according to records of phosphorus geochemistry measured from sedimentary sections in North China.

Romain Guilbaud
Simon W. Poulton
Timothy M. Lenton
Research02 Mar 2020
Nature Geoscience

Volume: 13, P: 296-301
Archaean oxygen oases driven by pulses of enhanced phosphorus recycling in the ocean

Periods with enhanced iron and sulfide availability that promoted recycling of bioavailable phosphorus from sediments contributed to episodic development of oxygen oases in the Archaean ocean, according to analysis of trace metals, phosphorus and iron from 2.9-billion-year-old sediments.

Fuencisla Cañadas
Romain Guilbaud
Alberto G. Fairén
ResearchOpen Access16 Apr 2025
Nature Geoscience

Volume: 18, P: 430-435
PPARα-mediated lipid metabolism reprogramming supports anti-EGFR therapy resistance in head and neck squamous cell carcinoma

Resistance to anti-EGFR therapy is a clinical issue for patients with advanced head and neck cancers. Here, the authors show that therapy-resistant cancer cells enhance fatty acid metabolism, which can be therapeutically targeted by inhibiting peroxisome proliferator-activated receptor alpha (PPARα).

Valentin Van den bossche
Julie Vignau
Cyril Corbet
ResearchOpen Access01 Feb 2025
Nature Communications

Volume: 16, P: 1-21
A global transition to ferruginous conditions in the early Neoproterozoic oceans

Deeper ocean waters were anoxic during the Neoproterozoic. Geochemical data suggest a transition from sulphidic to iron-rich mid-depth waters about one billion years ago, coincident with increased iron influx from the supercontinent Rodinia.

Romain Guilbaud
Simon W. Poulton
Graham A. Shields-Zhou
Research18 May 2015
Nature Geoscience

Volume: 8, P: 466-470
Sustained increases in atmospheric oxygen and marine productivity in the Neoproterozoic and Palaeozoic eras

Oxygen in shallow shelf waters rose linearly with atmospheric oxygen in the Neoproterozoic era, potentially driving the first radiation of marine animals, but widespread ocean oxygenation came later, according to reconstructions of oxygen levels and marine productivity.

Richard G. Stockey
Devon B. Cole
Erik A. Sperling
ResearchOpen Access02 Jul 2024
Nature Geoscience

Volume: 17, P: 667-674
Mackinawite partial oxidation to green rust produces a large, abiotic uranium isotope fractionation

Green rust, a common mineral in Precambrian oceans, forms as a by-product of mackinawite partial oxidation by uranium, along with uraninite and polysulphide. This process is accompanied by a large uranium isotope fractionation, according to isotopic uranium concentrations obtained from experimental data.

Romain Guilbaud
Morten B. Andersen
Liane G. Benning
ResearchOpen Access08 Feb 2025
Communications Earth & Environment

Volume: 6, P: 1-9

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Phosphorus-limited conditions in the early Neoproterozoic ocean maintained low levels of atmospheric oxygen

Archaean oxygen oases driven by pulses of enhanced phosphorus recycling in the ocean

PPARα-mediated lipid metabolism reprogramming supports anti-EGFR therapy resistance in head and neck squamous cell carcinoma

A global transition to ferruginous conditions in the early Neoproterozoic oceans

Sustained increases in atmospheric oxygen and marine productivity in the Neoproterozoic and Palaeozoic eras

Mackinawite partial oxidation to green rust produces a large, abiotic uranium isotope fractionation

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