Due to their substantial volume, subsoils contain more of the total soil carbon (C) pool than
topsoils. Much of this C is thousands of years old, suggesting that subsoils offer …

Soil microorganisms, by actively participating in the decomposition and transformation of
organic matter through diverse metabolic pathways, play a pivotal role in carbon cycling …

The exchange of carbon between soil organic carbon (SOC) and the atmosphere affects the
climate, and—because of the importance of organic matter to soil fertility—agricultural …

Soil photoautotrophic prokaryotes and micro‐eukaryotes–known as soil algae–are, together
with heterotrophic microorganisms, a constitutive part of the microbiome in surface soils …

CO 2 fixing microorganisms (CFMs) play a crucial role in carbon (C) sequestration in
vegetation restricted areas, eg, under semiarid and arid conditions. The factors controlling …

Microbial communities in soils are generally considered to be limited by carbon (C), which
could be a crucial control for basic soil functions and responses of microbial heterotrophic …

Heterotrophic CO 2 fixation is a significant yet underappreciated CO 2 flux in environmental
carbon cycling. In contrast to photosynthesis and chemolithoautotrophy–the main …

Soils are the largest terrestrial organic carbon pool and the largest terrestrial source of
atmospheric CO 2. Non-phototrophic CO 2 fixation by microbes re-fixes and recycles CO 2 …

Soils substantially contribute to the terrestrial fluxes of CO 2 to the atmosphere. Dark CO 2
fixation, the microbial process by which pore space CO 2 is reduced to organic matter, may …

Background and aims Soil organic carbon (SOC) dynamics are vital in the context of climate
change and sustainable soil management. The ẟ13C signatures of SOC are powerful …