Assessment of Environmental Radionuclides and Controlling Factors in Volcanic Soils of Andean Patagonia

Autores
la Manna, Ludmila Andrea; Gaspar, Leticia; González Comunian, Dubraska Patricia; Navas, Ana
Año de publicación
2025
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Natural radionuclides (40K, 210Pb, 226Ra, 232Th, and 238U) were evaluated for the first timeon volcanic ash soils of the Argentine Patagonian Andes. The study was carried out alonga topoedaphoclimatic gradient, encompassing soils from Xeric Mollisols to Udic Andisols,and different land uses. Median mass-specific activities of the lithogenic radionuclides 40K,210Pb, 226Ra, 232Th, and 238U were 375, 8, 17, 19, and 29 (Bq kg−1), respectively, all fallingwithin global natural background levels, yet distinct spatial and vertical patterns emerged.Radionuclide activities increased with sand content and decreased with organic matter,highlighting the role of the parent material and texture. In dry-site Mollisols, 40K and210Pb increased with depth, while in humid-site Udands, activities declined with depth,suggesting leaching and surface accumulation by allophane–organic matter complexes.The 238U/226Ra activity ratio showed disequilibrium, indicating young, developing soilprofiles. In Xerolls, where native forest was replaced by afforestation and rangeland use,erosion-driven degradation was evident. The distribution of radionuclides along the slopeswas closely linked to the topographic position and slope gradient. These results underscorethe sensitivity of radionuclide patterns to parent material, soil-forming processes and landuse and provide a valuable reference for environmental monitoring in volcanic landscapes.
Fil: la Manna, Ludmila Andrea. Universidad Nacional de la Patagonia "san Juan Bosco". Facultad de Ingenieria - Sede Esquel. Centro de Estudios Ambientales Integrados.; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Gaspar, Leticia. Consejo Superior de Investigaciones Científicas; España
Fil: González Comunian, Dubraska Patricia. Universidad Nacional de la Patagonia "san Juan Bosco". Facultad de Ingenieria - Sede Esquel. Centro de Estudios Ambientales Integrados.; Argentina
Fil: Navas, Ana. Consejo Superior de Investigaciones Científicas; España
Materia
Natural radionuclides
Andisols
Non-crystalline minerals
Gamma spectrometry
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/272718
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Assessment of Environmental Radionuclides and Controlling Factors in Volcanic Soils of Andean Patagoniala Manna, Ludmila AndreaGaspar, LeticiaGonzález Comunian, Dubraska PatriciaNavas, AnaNatural radionuclidesAndisolsNon-crystalline mineralsGamma spectrometryhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Natural radionuclides (40K, 210Pb, 226Ra, 232Th, and 238U) were evaluated for the first timeon volcanic ash soils of the Argentine Patagonian Andes. The study was carried out alonga topoedaphoclimatic gradient, encompassing soils from Xeric Mollisols to Udic Andisols,and different land uses. Median mass-specific activities of the lithogenic radionuclides 40K,210Pb, 226Ra, 232Th, and 238U were 375, 8, 17, 19, and 29 (Bq kg−1), respectively, all fallingwithin global natural background levels, yet distinct spatial and vertical patterns emerged.Radionuclide activities increased with sand content and decreased with organic matter,highlighting the role of the parent material and texture. In dry-site Mollisols, 40K and210Pb increased with depth, while in humid-site Udands, activities declined with depth,suggesting leaching and surface accumulation by allophane–organic matter complexes.The 238U/226Ra activity ratio showed disequilibrium, indicating young, developing soilprofiles. In Xerolls, where native forest was replaced by afforestation and rangeland use,erosion-driven degradation was evident. The distribution of radionuclides along the slopeswas closely linked to the topographic position and slope gradient. These results underscorethe sensitivity of radionuclide patterns to parent material, soil-forming processes and landuse and provide a valuable reference for environmental monitoring in volcanic landscapes.Fil: la Manna, Ludmila Andrea. Universidad Nacional de la Patagonia "san Juan Bosco". Facultad de Ingenieria - Sede Esquel. Centro de Estudios Ambientales Integrados.; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Gaspar, Leticia. Consejo Superior de Investigaciones Científicas; EspañaFil: González Comunian, Dubraska Patricia. Universidad Nacional de la Patagonia "san Juan Bosco". Facultad de Ingenieria - Sede Esquel. Centro de Estudios Ambientales Integrados.; ArgentinaFil: Navas, Ana. Consejo Superior de Investigaciones Científicas; EspañaMDPI2025-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/272718la Manna, Ludmila Andrea; Gaspar, Leticia; González Comunian, Dubraska Patricia; Navas, Ana; Assessment of Environmental Radionuclides and Controlling Factors in Volcanic Soils of Andean Patagonia; MDPI; Geosciences; 15; 9; 9-2025; 1-172076-3263CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.mdpi.com/2076-3263/15/9/348info:eu-repo/semantics/altIdentifier/doi/10.3390/geosciences15090348info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:39:40Zoai:ri.conicet.gov.ar:11336/272718instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-22 11:39:40.894CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Assessment of Environmental Radionuclides and Controlling Factors in Volcanic Soils of Andean Patagonia
title Assessment of Environmental Radionuclides and Controlling Factors in Volcanic Soils of Andean Patagonia
spellingShingle Assessment of Environmental Radionuclides and Controlling Factors in Volcanic Soils of Andean Patagonia
la Manna, Ludmila Andrea
Natural radionuclides
Andisols
Non-crystalline minerals
Gamma spectrometry
title_short Assessment of Environmental Radionuclides and Controlling Factors in Volcanic Soils of Andean Patagonia
title_full Assessment of Environmental Radionuclides and Controlling Factors in Volcanic Soils of Andean Patagonia
title_fullStr Assessment of Environmental Radionuclides and Controlling Factors in Volcanic Soils of Andean Patagonia
title_full_unstemmed Assessment of Environmental Radionuclides and Controlling Factors in Volcanic Soils of Andean Patagonia
title_sort Assessment of Environmental Radionuclides and Controlling Factors in Volcanic Soils of Andean Patagonia
dc.creator.none.fl_str_mv la Manna, Ludmila Andrea
Gaspar, Leticia
González Comunian, Dubraska Patricia
Navas, Ana
author la Manna, Ludmila Andrea
author_facet la Manna, Ludmila Andrea
Gaspar, Leticia
González Comunian, Dubraska Patricia
Navas, Ana
author_role author
author2 Gaspar, Leticia
González Comunian, Dubraska Patricia
Navas, Ana
author2_role author
author
author
dc.subject.none.fl_str_mv Natural radionuclides
Andisols
Non-crystalline minerals
Gamma spectrometry
topic Natural radionuclides
Andisols
Non-crystalline minerals
Gamma spectrometry
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Natural radionuclides (40K, 210Pb, 226Ra, 232Th, and 238U) were evaluated for the first timeon volcanic ash soils of the Argentine Patagonian Andes. The study was carried out alonga topoedaphoclimatic gradient, encompassing soils from Xeric Mollisols to Udic Andisols,and different land uses. Median mass-specific activities of the lithogenic radionuclides 40K,210Pb, 226Ra, 232Th, and 238U were 375, 8, 17, 19, and 29 (Bq kg−1), respectively, all fallingwithin global natural background levels, yet distinct spatial and vertical patterns emerged.Radionuclide activities increased with sand content and decreased with organic matter,highlighting the role of the parent material and texture. In dry-site Mollisols, 40K and210Pb increased with depth, while in humid-site Udands, activities declined with depth,suggesting leaching and surface accumulation by allophane–organic matter complexes.The 238U/226Ra activity ratio showed disequilibrium, indicating young, developing soilprofiles. In Xerolls, where native forest was replaced by afforestation and rangeland use,erosion-driven degradation was evident. The distribution of radionuclides along the slopeswas closely linked to the topographic position and slope gradient. These results underscorethe sensitivity of radionuclide patterns to parent material, soil-forming processes and landuse and provide a valuable reference for environmental monitoring in volcanic landscapes.
Fil: la Manna, Ludmila Andrea. Universidad Nacional de la Patagonia "san Juan Bosco". Facultad de Ingenieria - Sede Esquel. Centro de Estudios Ambientales Integrados.; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Gaspar, Leticia. Consejo Superior de Investigaciones Científicas; España
Fil: González Comunian, Dubraska Patricia. Universidad Nacional de la Patagonia "san Juan Bosco". Facultad de Ingenieria - Sede Esquel. Centro de Estudios Ambientales Integrados.; Argentina
Fil: Navas, Ana. Consejo Superior de Investigaciones Científicas; España
description Natural radionuclides (40K, 210Pb, 226Ra, 232Th, and 238U) were evaluated for the first timeon volcanic ash soils of the Argentine Patagonian Andes. The study was carried out alonga topoedaphoclimatic gradient, encompassing soils from Xeric Mollisols to Udic Andisols,and different land uses. Median mass-specific activities of the lithogenic radionuclides 40K,210Pb, 226Ra, 232Th, and 238U were 375, 8, 17, 19, and 29 (Bq kg−1), respectively, all fallingwithin global natural background levels, yet distinct spatial and vertical patterns emerged.Radionuclide activities increased with sand content and decreased with organic matter,highlighting the role of the parent material and texture. In dry-site Mollisols, 40K and210Pb increased with depth, while in humid-site Udands, activities declined with depth,suggesting leaching and surface accumulation by allophane–organic matter complexes.The 238U/226Ra activity ratio showed disequilibrium, indicating young, developing soilprofiles. In Xerolls, where native forest was replaced by afforestation and rangeland use,erosion-driven degradation was evident. The distribution of radionuclides along the slopeswas closely linked to the topographic position and slope gradient. These results underscorethe sensitivity of radionuclide patterns to parent material, soil-forming processes and landuse and provide a valuable reference for environmental monitoring in volcanic landscapes.
publishDate 2025
dc.date.none.fl_str_mv 2025-09
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/272718
la Manna, Ludmila Andrea; Gaspar, Leticia; González Comunian, Dubraska Patricia; Navas, Ana; Assessment of Environmental Radionuclides and Controlling Factors in Volcanic Soils of Andean Patagonia; MDPI; Geosciences; 15; 9; 9-2025; 1-17
2076-3263
CONICET Digital
CONICET
url http://hdl.handle.net/11336/272718
identifier_str_mv la Manna, Ludmila Andrea; Gaspar, Leticia; González Comunian, Dubraska Patricia; Navas, Ana; Assessment of Environmental Radionuclides and Controlling Factors in Volcanic Soils of Andean Patagonia; MDPI; Geosciences; 15; 9; 9-2025; 1-17
2076-3263
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.mdpi.com/2076-3263/15/9/348
info:eu-repo/semantics/altIdentifier/doi/10.3390/geosciences15090348
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv MDPI
publisher.none.fl_str_mv MDPI
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 12.982451

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