Consider the anoxic microsite: acknowledging and appreciating spatiotemporal redox heterogeneity in soils and sediments

EM Lacroix, M Aeppli, K Boye, E Brodie… - ACS Earth and Space …, 2023 - ACS Publications
Reduction–oxidation (redox) reactions underlie essentially all biogeochemical cycles. Like
most soil properties and processes, redox is spatiotemporally heterogeneous. However …

Nitrate-stimulated release of naturally occurring sedimentary uranium

JP Westrop, P Yadav, PJ Nolan… - Environmental …, 2023 - ACS Publications
Groundwater uranium (U) concentrations have been measured above the US EPA
maximum contaminant level (30 μg/L) in many US aquifers, including in areas not …

A Critical Look at Colloid Generation, Stability, and Transport in Redox-Dynamic Environments: Challenges and Perspectives

E Spielman-Sun, K Boye, D Dwivedi… - ACS Earth and Space …, 2024 - ACS Publications
Colloid generation, stability, and transport are important processes that can significantly
influence the fate and transport of nutrients and contaminants in environmental systems …

Prediction of As and Cd dissolution in various soils under flooding condition

J Ge, S Wu, H Wu, J Lin, Y Cai, D Zhou, X Gu - Science of The Total …, 2024 - Elsevier
Although the mobility of arsenic (As) and cadmium (Cd) in soils during the flooding-drainage
process has been intensively studied, predicting their dissolution among various soils still …

Influence of dam on the distribution of solid iron species in riparian sediment particles at different sizes

Y Lu, W Zhao, P Zhang, H Liu, S Yuan - Applied Geochemistry, 2024 - Elsevier
The impact of dam on the distribution and transformation of elements in riparian zones has
received increasing attention. However, previous studies mainly focused on the site scale …

Nitrate Controls on the Extent and Type of Metal Retention in Fine-Grained Sediments of a Simulated Aquifer

M Engel, V Noël, RK Kukkadapu, K Boye… - Environmental …, 2022 - ACS Publications
Aquifer groundwater quality is largely controlled by sediment composition and physical
heterogeneity, which commonly sustains a unique redox gradient pattern. Attenuation of …

Simulation of anoxic lenses as exporters of reactivity in alluvial aquifer sediments

T Babey, K Boye, B Tolar, M Engel, V Noël… - … et Cosmochimica Acta, 2022 - Elsevier
Sedimentary interfaces between contrasting hydrogeological facies in alluvial aquifers drive
the development of biogeochemical interfaces that influence subsurface and surface water …

Reduction Capacity in the Transmissive Zones Fueled by the Embedded Low-permeability Lenses: Implications for Contaminant Transformation in Heterogeneous …

H Wang, Y Zhu, Y Lu, X Bu, Q Zhu, S Yuan - Water Research, 2024 - Elsevier
Redox conditions play a decisive role in regulating contaminant and nutrient transformation
in groundwater. Here we quantitatively described and interpreted the temporal and spatial …

Iron reduction in profundal sediments of ultraoligotrophic lake Tahoe under oxygen-limited conditions

M Aeppli, G Schladow… - Environmental …, 2023 - ACS Publications
Increased periods of bottom water anoxia in deep temperate lakes due to decreasing
frequency and depth of water column mixing in a warming climate may result in the reductive …

[HTML][HTML] Soil carbon concentration drives anoxic microsites across horizons, textures, and aggregate position in a California grassland

EM Lacroix, A Gomes, AS Honeyman, KR Huy… - Geoderma, 2025 - Elsevier
Anoxic microsites, zones of oxygen depletion in otherwise well-aerated soils, serve as
prominent controls on several biogeochemical cycles (eg, carbon, nitrogen, iron). However …