Evidence map›Paper›PMID 36687142›Full record

ArticleBiogeochemistry2023

Using fixed-potential electrodes to quantify iron and manganese redox cycling in upland soils.

Caitlin Hodges, John M Regan, Brandon Forsythe, David Oakley, Jason Kaye, Susan L Brantley

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In one paragraph

Article in Biogeochemistry, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

0numbers the graph read from it
0cells of the map it votes in
0citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

0 citing papers in PubMed.

No citing paper in PubMed yet.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors.

Caitlin HodgesSchool of Geosciences, University of Oklahoma, Norman, OK USA.ORCID 0000-0003-3960-5771
John M ReganDepartment of Civil and Environmental Engineering, Pennsylvania State University, University Park, PA USA.
Brandon ForsytheEarth and Environmental Systems Institute, Pennsylvania State University, University Park, PA USA.
David OakleyDepartment of Geosciences, Pennsylvania State University, University Park, PA USA.
Jason KayeDepartment of Ecosystem Science and Management, Pennsylvania State University, University Park, PA USA.
Susan L BrantleyEarth and Environmental Systems Institute, Pennsylvania State University, University Park, PA USA.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Although metal redox reactions in soils can strongly affect carbon mineralization and other important soil processes, little is known about temporal variations in this redox cycling. Recently, potentiostatically poised electrodes (fixed-potential electrodes) have shown promise for measuring the rate of oxidation and reduction at a specific reduction potential in situ in riparian soils. Here for the first time, we used these electrodes in unsaturated soils to explore the fine-scale temporal redox fluctuations of both iron and manganese in response to environmental conditions. We used three-electrode systems with working electrodes fixed at 100 mV (vs. SHE) and 400 mV at 50 cm and 70 cm in the valley floor soil of a headwater watershed. Electrodes fixed at 100 mV to mimic iron oxides and at 400 mV to mimic manganese oxides allowed real-time reduction and oxidation rates to be calculated from temporal variations in the electric current. Electrode measurements were compared to soil porewater chemistry, pCO

Indexed as

Anaerobic micrositesAnaerobic respirationCritical zoneMineral weatheringSoil respiration

Identifiers

PMID36687142
PMCPMC9838272

What OpenQuestion holds

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.