Statistical Learning and Uncommon Soil Microbiota Explain Biogeochemical Responses after Wildfire

Honeyman, Alexander S.; Fegel, Timothy S.; Peel, Henry F.; Masters, Nicole A; Vuono, David C.; Kleiber, William; Rhoades, Charles C.; Spear, John R.

doi:10.1128/aem.00343-22

Cited by 3 publications

(1 citation statement)

References 83 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Unfortunately, data on the soil microbiome after pyrogenic impact are incomplete and often contradictory, which could be caused by differences in the soil type studied and the geographical features of the study area [28,29]. Differences in the research methodology should also be taken into account [25].…”

Section: Introductionmentioning

confidence: 99%

Wildfires’ Effect on Soil Properties and Bacterial Biodiversity of Postpyrogenic Histic Podzols (Middle Taiga, Komi Republic)

Chebykina,

Abakumov,

Kimeklis

et al. 2024

Forests

View full text Add to dashboard Cite

Data on the main properties of Histic Podzols in the pine forests of semi-hydromorphic landscapes in the middle taiga of the Komi Republic after forest fires are presented. A decrease in topsoil horizon thickness by more than 7.6 times, an increase in litter density by 6 times, and a decrease in litter stock by 4 times were observed in postfire soil. There was an increase in carbon content in the pyrogenic horizon (48%) and in the upper part of the podzolic horizon—from 0.49 at the control plot to 1.16% after the fire. The accumulation of all studied trace metals (Cu—from 2.5 to 6.8 mg × kg−1; Zn—from 35.7 to 127.4 mg × kg−1; Ni—from 2.2 to 8.1 mg × kg−1; Pb—from 1.4 to 28.3 mg × kg−1; Cd—from 0.3 to 1.1 mg × kg−1) in soils after wildfires was recorded. The effect of the fire can be traced to a depth of approximately 20–30 cm. A significant influence of the pyrogenic factor on the alpha and beta bacterial diversity was noted. The bacterial response to a forest fire can be divided into an increased proportion of spore-forming and Gram-negative species with complex metabolism as well.

show abstract

Section: Introductionmentioning

confidence: 99%

Wildfires’ Effect on Soil Properties and Bacterial Biodiversity of Postpyrogenic Histic Podzols (Middle Taiga, Komi Republic)

Chebykina,

Abakumov,

Kimeklis

et al. 2024

Forests

View full text Add to dashboard Cite

show abstract

Optode-based chemical imaging of laboratory burned soil reveals millimeter-scale heterogeneous biogeochemical responses

Honeyman

Merl

Spear

et al. 2023

Environmental Research

View full text Add to dashboard Cite

Assessing the Impact of Recreational Activities on Streams: A Colorado Case Study

Hamdan,

Villaruel,

Newmeyer

et al. 2024

ACS EST Water

View full text Add to dashboard Cite

Water-based recreational activities can impact freshwater systems, but the resulting anthropogenic alterations to the chemical and microbial composition of natural streams remain poorly understood. Utilizing state-of-the-art analytical approaches, including liquid chromatography-high-resolution mass spectrometry (LC-HRMS), inductively coupled plasma mass spectrometry (ICP-MS), and 16S rRNA gene sequencing, we investigated changes in stream chemistry and microbiology resulting from recreational activities in Clear Creek (Golden, Colorado). Spatial and temporal sampling was conducted for 3 days over a summer holiday weekend when a large influx of recreational float tubing activity occurred. Nontarget LC-HRMS analysis demonstrated substantial differences in the organic fingerprint on days and locations with high recreational use compared to that of low use. Similarly, increases in the total suspended solids were correlated with suspended particulate metal concentrations (Al, Cu, Ti, Pb, and Zn). Element ratios suggest recreation-induced resuspension of streambed sediments as the metal source rather than other anthropogenic inputs (e.g., Ti/Zn-containing sunscreens). Gene sequencing revealed significant shifts in the stream microbial community, supporting an input of human-associated enteric microbiota during high recreation periods. However, the overall results indicate that recreational activities have a short-lived effect on the stream. In this work, we established a first-of-its-kind holistic assessment of the impact of anthropogenic activity on a natural stream by simultaneously considering changes in the organic, inorganic, and microbial fingerprints.

show abstract

Statistical Learning and Uncommon Soil Microbiota Explain Biogeochemical Responses after Wildfire

Abstract: Soil biogeochemical processes are critical to plant growth and water quality and are substantially disturbed by wildfire. However, soil responses to fire are difficult to predict.

Cited by 3 publications

References 83 publications

Wildfires’ Effect on Soil Properties and Bacterial Biodiversity of Postpyrogenic Histic Podzols (Middle Taiga, Komi Republic)

Wildfires’ Effect on Soil Properties and Bacterial Biodiversity of Postpyrogenic Histic Podzols (Middle Taiga, Komi Republic)

Optode-based chemical imaging of laboratory burned soil reveals millimeter-scale heterogeneous biogeochemical responses

Assessing the Impact of Recreational Activities on Streams: A Colorado Case Study

Contact Info

Product

Resources

About