Nitrous oxide from streams and rivers: A review of primary biogeochemical pathways and environmental variables

AM Quick, WJ Reeder, TB Farrell, D Tonina… - Earth-science …, 2019 - Elsevier
Atmospheric concentrations of the powerful greenhouse gas nitrous oxide (N 2 O) have
increased dramatically over the last 100 years, and part of these emissions come from …

Transfer and transformations of oxygen in rivers as catchment reflectors of continental landscapes: A review

DR Piatka, R Wild, J Hartmann, R Kaule, L Kaule… - Earth-Science …, 2021 - Elsevier
Oxygen is one of the most crucial elements on earth and equally affects life and inorganic
redox processes. After its transition to water with moderate solubility and slow diffusion rates …

Organizational principles of hyporheic exchange flow and biogeochemical cycling in river networks across scales

S Krause, BW Abbott, V Baranov… - Ecohydrological …, 2024 - Wiley Online Library
In this chapter, the authors provide a comprehensive analysis and synthesis of the
interactions between important drivers and controls of hyporheic exchange and …

Rethinking Aerobic Respiration in the Hyporheic Zone under Variation in Carbon and Nitrogen Stoichiometry

AB Tureţcaia, VA Garayburu-Caruso… - Environmental …, 2023 - ACS Publications
Hyporheic zones (HZs)─ zones of groundwater–surface water mixing─ are hotspots for
dissolved organic matter (DOM) and nutrient cycling that can disproportionately impact …

Hotspots of Dissolved Arsenic Generated from Buried Silt Layers along Fluctuating Rivers

K Kwak, TS Varner, W Nguyen… - Environmental …, 2024 - ACS Publications
Previous studies along the banks of the tidal Meghna River of the Ganges-Brahmaputra-
Meghna Delta demonstrated the active sequestration of dissolved arsenic (As) on newly …

Dynamic hyporheic zones: Exploring the role of peak flow events on bedform‐induced hyporheic exchange

T Singh, L Wu, JD Gomez‐Velez… - Water Resources …, 2019 - Wiley Online Library
Discharge varies in space and time, driving hyporheic exchange processes in river corridors
that affect biogeochemical cycling and ultimately control the dynamics of biogeochemical hot …

Drought conditions maximize the impact of high‐frequency flow variations on thermal regimes and biogeochemical function in the hyporheic zone

X Song, X Chen, J Stegen, G Hammond… - Water Resources …, 2018 - Wiley Online Library
Anthropogenic activities, especially dam operations, often induce larger and more frequent
stage fluctuations than those occurring in natural rivers. However, long‐term impacts of such …

Reactive migration mechanism of Fe2+ and As3+ during groundwater discharge into river water: Insight from sand column experiments

X Deng, Y Huang, Z Guo, S Mao, S Li, L Tong, M Li… - Journal of …, 2023 - Elsevier
During groundwater discharge into river water, the Fe 2+ and As 3+ in anoxic groundwater
are brought into the oxygen-bearing interaction zone. However, the reactive migration and …

Using ensemble data assimilation to estimate transient hydrologic exchange flow under highly dynamic flow conditions

K Chen, X Chen, X Song, MA Briggs… - Water Resources …, 2022 - Wiley Online Library
Quantifying dynamic hydrologic exchange flows (HEFs) within river corridors that experience
high‐frequency flow variations caused by dam regulations is important for understanding the …

The role of ponds in pesticide dissipation at the agricultural catchment scale: a critical review

G Imfeld, S Payraudeau, J Tournebize, S Sauvage… - Water, 2021 - mdpi.com
Ponds in agricultural areas are ubiquitous water retention systems acting as reactive
biogeochemical hotspots controlling pesticide dissipation and transfer at the catchment …