An Intercomparison of DOC Estimated From fDOM Sensors in Wildfire Affected Streams of the Western United States DOI Creative Commons
Garrett Akie, David W. Clow, Sheila F. Murphy

et al.

Hydrological Processes, Journal Year: 2024, Volume and Issue: 38(12)

Published: Dec. 1, 2024

ABSTRACT Wildfires in the western United States (US) have been demonstrated to affect water quality, including dissolved organic carbon (DOC), streams. Elevated post‐wildfire DOC concentration poses a potential risk drinking treatment systems. In‐stream measurements of fluorescent matter (fDOM), proxy for DOC, shown detect dynamic changes DOC. High frequency monitoring temperature, turbidity, and fDOM was used conjunction with discrete sampling during targeted storm events at fixed intervals estimate five US streams following wildfires 2020 2021 objective characterise compare responses wildfire among sites. The elevated turbidity conditions typical after presented challenge there need identify appropriate corrections burned A combination established novel methods corrected concentrations effects up 800 Formazin nephelometric units (FNU). Pre‐wildfire high quality data adjacent unburned watersheds allowed separation climate on one Hydrology, landcover were more important drivers yield than characteristics. Seasonal patterns unchanged by snowmelt‐driven watersheds. Large, transient spikes frontal convective storms observed all sites, but not site. These often exceeded operational thresholds treatment. This study highlights ability develop estimates surface waters FNU using sensors emphasises value pre‐wildfire separating effects.

Language: Английский

Revisiting the fingerprint of organic matters in speleothem by Electron Paramagnetic Resonance DOI Creative Commons
Yves Perrette, Hervé Vezin,

Bernard Fanget

et al.

Organic Geochemistry, Journal Year: 2025, Volume and Issue: 201, P. 104929 - 104929

Published: Jan. 7, 2025

Language: Английский

Citations

0
Multi-domain magnetic particles in speleothems as a proxy for past cave-stream flooding: A 33 kyr record from central North Island, Aotearoa New Zealand DOI Creative Commons
Bethany Fox, Ioan Lascu, R. J. Harrison

et al.

Quaternary Science Reviews, Journal Year: 2025, Volume and Issue: 356, P. 109289 - 109289

Published: March 12, 2025

Language: Английский

Citations

0
Molecular activity mediates the composition and assembly of dissolved organic matter in lake sediments DOI
Shuailong Wen, Ang Hu, Francisco Dini‐Andreote

et al.

Limnology and Oceanography, Journal Year: 2025, Volume and Issue: unknown

Published: March 7, 2025

Abstract Lake sediments are hotspots for carbon transformation and burial, where the turnover of dissolved organic matter (DOM), influenced by molecular activity, regulates global cycling. However, composition sediment DOM how its assembly mechanisms related to activity remain poorly understood. Here, 63 freshwater were collected from tropical cold temperate climatic zones in China. We explored underlying driven climate, physicochemical factors, microbes along gradient indicated number potential biochemical transformations which a molecule is involved. Sediment was dominated lipid‐ (35%) lignin‐like compounds (33%), latter enriched as increased. Besides, assemblage with higher had greater compositional similarity across different tended assemble deterministically. Specifically, average molecules increased 0.4 14, these structured shift stochastic deterministic processes, accounting ≥ 75% thereafter. Overall, assemblages primarily including total electrical conductivity. As increased, however, increasingly affected climate bacterial communities, consistent enhanced complexity bacterial–molecular networks. Collectively, our study highlights that regulated biotic abiotic factors further constrained intrinsic activity.

Language: Английский

Citations

0
Using satellite-derived attributes as proxies for soil carbon cycling to map carbon stocks in alpine grassland soils DOI Creative Commons
Ren‐Min Yang,

Laiming Huang,

Zhifeng Yan

et al.

Geoderma, Journal Year: 2024, Volume and Issue: 453, P. 117143 - 117143

Published: Dec. 17, 2024

Language: Английский

Citations

0
An Intercomparison of DOC Estimated From fDOM Sensors in Wildfire Affected Streams of the Western United States DOI Creative Commons
Garrett Akie, David W. Clow, Sheila F. Murphy

et al.

Hydrological Processes, Journal Year: 2024, Volume and Issue: 38(12)

Published: Dec. 1, 2024

ABSTRACT Wildfires in the western United States (US) have been demonstrated to affect water quality, including dissolved organic carbon (DOC), streams. Elevated post‐wildfire DOC concentration poses a potential risk drinking treatment systems. In‐stream measurements of fluorescent matter (fDOM), proxy for DOC, shown detect dynamic changes DOC. High frequency monitoring temperature, turbidity, and fDOM was used conjunction with discrete sampling during targeted storm events at fixed intervals estimate five US streams following wildfires 2020 2021 objective characterise compare responses wildfire among sites. The elevated turbidity conditions typical after presented challenge there need identify appropriate corrections burned A combination established novel methods corrected concentrations effects up 800 Formazin nephelometric units (FNU). Pre‐wildfire high quality data adjacent unburned watersheds allowed separation climate on one Hydrology, landcover were more important drivers yield than characteristics. Seasonal patterns unchanged by snowmelt‐driven watersheds. Large, transient spikes frontal convective storms observed all sites, but not site. These often exceeded operational thresholds treatment. This study highlights ability develop estimates surface waters FNU using sensors emphasises value pre‐wildfire separating effects.

Language: Английский

Citations

0