Evidence map›Paper›PMID 41543791›Full record

ArticleCarbon balance and management2026

Impact of forest degradation on soil properties in the Peruvian Amazon.

Geomar Vallejos-Torres, Nery Gaona-Jimenez, Andi Lozano, Harry Saavedra, Alberto Alva Arévalo, Caleb Ríos Vargas, Jorge Saavedra-Ramírez, Juan Tuesta-Hidalgo, Oscar A Tuesta-Hidalgo, Luis Vilela and 5 more

Abstract read
In one paragraph

Article in Carbon balance and management, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing 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

1 citing paper in PubMed.

  1. Article
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

15 authors.

Geomar Vallejos-TorresUniversidad Nacional de San Martín, Jr. Maynas Nº177, Tarapoto, San Martín, Peru. gvallejos@unsm.edu.pe.
Nery Gaona-JimenezUniversidad Nacional de San Martín, Jr. Maynas Nº177, Tarapoto, San Martín, Peru.
Andi LozanoUniversidad Nacional de San Martín, Jr. Maynas Nº177, Tarapoto, San Martín, Peru.
Harry SaavedraUniversidad Nacional de San Martín, Jr. Maynas Nº177, Tarapoto, San Martín, Peru.
Alberto Alva ArévaloUniversidad Nacional de San Martín, Jr. Maynas Nº177, Tarapoto, San Martín, Peru.
Caleb Ríos VargasUniversidad Nacional de San Martín, Jr. Maynas Nº177, Tarapoto, San Martín, Peru.
Jorge Saavedra-RamírezEscuela Profesional de Ingeniería en Zootecnia, Universidad Nacional Autónoma de Alto Amazonas (UNAAA), Alto Amazonas, Yurimaguas, Peru.
Juan Tuesta-HidalgoEscuela Profesional de Ingeniería en Zootecnia, Universidad Nacional Autónoma de Alto Amazonas (UNAAA), Alto Amazonas, Yurimaguas, Peru.
Oscar A Tuesta-HidalgoEscuela Profesional de Ingeniería en Zootecnia, Universidad Nacional Autónoma de Alto Amazonas (UNAAA), Alto Amazonas, Yurimaguas, Peru.
Luis VilelaEscuela Profesional de Ingeniería en Zootecnia, Universidad Nacional Autónoma de Alto Amazonas (UNAAA), Alto Amazonas, Yurimaguas, Peru.
Manuel Jesús Valdez-AndíaUniversidad Nacional Autónoma de Alto Amazonas (UNAAA), Yurimaguas, Peru.
Keneth ReateguiUniversidad Nacional Intercultural de la Amazonía, MC26+888, San Jose Km. 0.5, Pucallpa, 25004, Peru.
Juan R Baselly-VillanuevaInstituto Nacional de Innovación Agraria - INIA, Calle San Roque 209, Maynas, 16430, Loreto, Peru.
César MarínCentro de Investigación e Innovación para el Cambio Climático (CiiCC), Universidad Santo Tomás, Av. Ramón Picarte 1130, Valdivia, 5090000, Chile.
Bárbara VentoInstituto Argentino de Nivología Glaciología y Ciencias Ambientales (IANIGLA), Centro Científico Tecnológico-Mendoza - CONICET, Av. Ruiz Leal s/n, Mendoza, Argentina.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe Amazonian forests are increasingly threatened due to continuous changes in land use, particularly deforestation. This study aimed to quantify and analyze the vertical distribution of soil glomalin and its relationship with carbon, climate, and soil properties across three forest types of the Peruvian Amazon. A total of 18 plots were selected and sampled in forests with different vegetation cover types: deforested, disturbed, and primary forest. The vertical variation of total glomalin (TG), easily extractable glomalin (EEG), and the number of arbuscular mycorrhizal fungal (AMF) spores was estimated, as it was the relationships of these variables with soil depth, physical-chemical properties, and climate conditions.

resultsThe mean values for TG, EEG, and AMF showed vertical variations in the three forest cover types, with high values in disturbed forests and degraded soils. Overall, higher mean values were found in the surface soil layers compared to the deep layers. TG, EEG, and AMF were positively corelated with soil organic carbon (SOC) and soil organic matter (SOM). Moreover, the total nitrogen (N), SOC, OM, total phosphorus (P), and soil water content (SWC) presented higher values in the topsoil than the deep layers.

conclusionsThe highest production of glomalin in disturbed forests is probably a response to degradation processes. This work is a contribution to expand knowledge about glomalin dynamics in forest soils of the Amazon rainforest and provides essential information for future soil ecosystem restoration practices in tropical forests.

Indexed as

DeforestationDisturbed forestLand-use changeMycorrhizal fungiPrimary forest

Identifiers

PMID41543791
PMCPMC12817398

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
Read underepoch 390

Registered trials

None linked

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.