Iron-mediated organic matter decomposition in humid soils can counteract protection

C Chen, SJ Hall, E Coward, A Thompson - Nature communications, 2020 - nature.com
Soil organic matter (SOM) is correlated with reactive iron (Fe) in humid soils, but Fe also
promotes SOM decomposition when oxygen (O2) becomes limited. Here we quantify Fe …

The influence of native soil organic matter and minerals on ferrous iron oxidation

C Chen, A Thompson - Geochimica et Cosmochimica Acta, 2021 - Elsevier
Fe (II) oxidation by O 2 is an important process generating Fe (oxyhydr) oxides, which play
sorptive, structural and electron-transfer roles in soils. Here we explored how native …

Unraveling iron oxides as abiotic catalysts of organic phosphorus recycling in soil and sediment matrices

JJ Basinski, SE Bone, AR Klein… - nature …, 2024 - nature.com
In biogeochemical phosphorus cycling, iron oxide minerals are acknowledged as strong
adsorbents of inorganic and organic phosphorus. Dephosphorylation of organic phosphorus …

Soil organic carbon accrual due to more efficient microbial utilization of plant inputs at greater long-term soil moisture

IA Shabtai, S Das, TM Inagaki, B Azimzadeh… - … et Cosmochimica Acta, 2022 - Elsevier
High long-term soil moisture may either stimulate or inhibit soil organic carbon (SOC) losses
through changes to mineral and chemical composition, and resultant organo-mineral …

The primacy of temporal dynamics in driving spatial self-organization of soil iron redox patterns

X Dong, DD Richter, A Thompson… - Proceedings of the …, 2023 - National Acad Sciences
This study investigates mechanisms that generate regularly spaced iron-rich bands in
upland soils. These striking features appear in soils worldwide, but beyond a generalized …

Soil CO2 and O2 Concentrations Illuminate the Relative Importance of Weathering and Respiration to Seasonal Soil Gas Fluctuations

C Hodges, H Kim, SL Brantley… - Soil Science Society of …, 2019 - Wiley Online Library
Soil CO2 and O2 cycles are coupled in some processes (eg, respiration) but uncoupled in
others (eg, silicate weathering). One benchmark for interpreting soil biogeochemical …

Increased rainfall frequency enhances dry seasonal soil mineral-associated organic carbon in a subtropical forest

J Chen, X Chen, Q Chen, Y Zhu, Q Deng - Science of The Total …, 2024 - Elsevier
Climate models predict longer and more severe droughts, and alterations in the frequency
and intensity of rainfall events. However, how changing precipitation patterns affect soil …

Theoretical constraints on Fe reduction rates in upland soils as a function of hydroclimatic conditions

S Calabrese, D Barcellos, A Thompson… - Journal of …, 2020 - Wiley Online Library
Periods of high soil wetness promote anaerobic processes such as iron (Fe) reduction within
soil microsites, with implications for organic matter decomposition, the fate of pollutants, and …

Map** depth to the argillic horizon on historically farmed soil currently under forests

RC Ryland, A Thompson, LA Sutter, D Markewitz - Geoderma, 2020 - Elsevier
The Piedmont region of the southeastern United States experienced a period of accelerated
erosion in the 1800s. Clear-cutting of the forests coupled with soil tilling and inadequate …

Quantitative analysis of hillshed geomorphology and critical zone function: Raising the hillshed to watershed status

ZS Brecheisen, DD Richter, S Moon, PN Halpin - Bulletin, 2022 - pubs.geoscienceworld.org
Landscapes are frequently delineated by nested watersheds and river networks ranked via
stream orders. Landscapes have only recently been delineated by their interfluves and ridge …