Nature Geoscience, Published online: 07 July 2026; doi:10.1038/s41561-026-02063-5

Author Correction: Ocean iron fertilization from enhanced mid-ocean-ridge volcanism due to ice-age sea-level falls

Nature Geoscience, Published online: 06 July 2026; doi:10.1038/s41561-026-02015-z

This Perspective explores how changes in microbial and hydrological processes, in response to permafrost thaw across Arctic landscapes, alter iron–organic carbon interactions and therefore carbon cycling and greenhouse gas emissions.

Nature Geoscience, Published online: 06 July 2026; doi:10.1038/s41561-026-02035-9

The amount of energy that soil microbes can obtain from oxidizing available organic carbon is limited, which keeps many of them dormant and restricts their growth, necromass production and ultimately the accrual of soil carbon, according to analyses of soil carbon and energy fluxes.

Nature Geoscience, Published online: 01 July 2026; doi:10.1038/s41561-026-02026-w

Two independent studies imply that a remarkable burst of voluminous volcanism on the Pacific plate during the Cretaceous is attributable to coupled plate–mantle dynamics. Together, their findings show how enhanced subduction, mantle heterogeneity, and plate tectonic boundaries collectively controlled the timing and expression of these oceanic large igneous provinces.

Nature Geoscience, Published online: 29 June 2026; doi:10.1038/s41561-026-02027-9

Two independent studies suggest that thousands of submarine volcanoes in the Pacific Ocean and offshore Africa are likely to have resulted from two high-temperature structures in the lower mantle, whose location and morphology are influenced by plate subduction. Together, their findings imply many forms of intraplate volcanism are tied to plate tectonics through the deep mantle.

Nature Geoscience, Published online: 29 June 2026; doi:10.1038/s41561-026-02034-w

Satellite observations suggest an approximate 20% increase in global riverine particulate organic carbon export to the ocean over the past four decades, driven primarily by tropical deforestation and Arctic permafrost thaw.

Nature Geoscience, Published online: 26 June 2026; doi:10.1038/s41561-026-02014-0

By quantifying carbon fixation in obligate heterotrophic bacteria across the global ocean, we show that about 20% of dark dissolved inorganic carbon (DIC) fixation arises from anaplerotic processes — reaching up to almost half of dark DIC fixation in some regions or conditions.

Nature Geoscience, Published online: 26 June 2026; doi:10.1038/s41561-026-02024-y

Dissolved oxygen concentrations increased in rivers and lakes across China between 2005 and 2022 due to nutrient management and despite climate warming-related decreases, according to a study of dissolved oxygen and environmental variables.