Solar UV-B radiation affects below-ground parameters in a fen ecosystem in Tierra del Fuego, Argentina: Implications of stratospheric ozone depletion

Autores
Zaller, Johann G.; Caldwell, Martyn M.; Flint, Stephan D.; Scopel, Ana Leonor; Sala, Osvaldo Esteban; Ballare, Carlos Luis
Año de publicación
2002
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Stratospheric ozone depletion caused by the release of chlorofluorocarbons is most pronounced at high latitudes, especially in the Southern Hemisphere (including the so- called 'ozone hole'). The consequent increase in solar ultraviolet-B radiation (UV-B, 280-315 nm) reaching the earth's surface may cause a variety of alterations in terrestrial ecosystems. Most effects might be expected to occur above-ground since sunlight does not penetrate effectively below-ground. Here, we demonstrate that solar UV-B radiation in a fen in Tierra del Fuego (Argentina), where the ozone hole passes overhead several times during the Austral spring, is causing large changes of below-ground processes of this ecosystem. During the third and fourth year of a manipulative field experiment, we investigated root systems in these plots and found that when the ambient solar UV-B radiation was substantially reduced, there was a 30% increase in summer root length production and as much as a threefold decrease in already low symbiotic mycorrhizal colonization frequency of the roots compared with plots receiving near-ambient solar UV-B. There was also an apparent shift toward older age classes of roots under reduced solar UV-B. Such large changes in root system behaviour may have decided effects on competition and other ecological interactions in this ecosystem.
Fil: Zaller, Johann G.. Utah State University; Estados Unidos. Universitat Bonn; Alemania
Fil: Caldwell, Martyn M.. Utah State University; Estados Unidos
Fil: Flint, Stephan D.. Utah State University; Estados Unidos
Fil: Scopel, Ana Leonor. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura; Argentina
Fil: Sala, Osvaldo Esteban. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura; Argentina
Fil: Ballare, Carlos Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura; Argentina
Materia
MYCORRHIZAL SYMBIOSIS
ROOT GROWTH
SOUTHERN HEMISPHERE
ULTRAVIOLET-B RADIATION
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/152138
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/152138
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Solar UV-B radiation affects below-ground parameters in a fen ecosystem in Tierra del Fuego, Argentina: Implications of stratospheric ozone depletionZaller, Johann G.Caldwell, Martyn M.Flint, Stephan D.Scopel, Ana LeonorSala, Osvaldo EstebanBallare, Carlos LuisMYCORRHIZAL SYMBIOSISROOT GROWTHSOUTHERN HEMISPHEREULTRAVIOLET-B RADIATIONhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Stratospheric ozone depletion caused by the release of chlorofluorocarbons is most pronounced at high latitudes, especially in the Southern Hemisphere (including the so- called 'ozone hole'). The consequent increase in solar ultraviolet-B radiation (UV-B, 280-315 nm) reaching the earth's surface may cause a variety of alterations in terrestrial ecosystems. Most effects might be expected to occur above-ground since sunlight does not penetrate effectively below-ground. Here, we demonstrate that solar UV-B radiation in a fen in Tierra del Fuego (Argentina), where the ozone hole passes overhead several times during the Austral spring, is causing large changes of below-ground processes of this ecosystem. During the third and fourth year of a manipulative field experiment, we investigated root systems in these plots and found that when the ambient solar UV-B radiation was substantially reduced, there was a 30% increase in summer root length production and as much as a threefold decrease in already low symbiotic mycorrhizal colonization frequency of the roots compared with plots receiving near-ambient solar UV-B. There was also an apparent shift toward older age classes of roots under reduced solar UV-B. Such large changes in root system behaviour may have decided effects on competition and other ecological interactions in this ecosystem.Fil: Zaller, Johann G.. Utah State University; Estados Unidos. Universitat Bonn; AlemaniaFil: Caldwell, Martyn M.. Utah State University; Estados UnidosFil: Flint, Stephan D.. Utah State University; Estados UnidosFil: Scopel, Ana Leonor. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura; ArgentinaFil: Sala, Osvaldo Esteban. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura; ArgentinaFil: Ballare, Carlos Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura; ArgentinaWiley Blackwell Publishing, Inc2002-12info: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/11336/152138Zaller, Johann G.; Caldwell, Martyn M.; Flint, Stephan D.; Scopel, Ana Leonor; Sala, Osvaldo Esteban; et al.; Solar UV-B radiation affects below-ground parameters in a fen ecosystem in Tierra del Fuego, Argentina: Implications of stratospheric ozone depletion; Wiley Blackwell Publishing, Inc; Global Change Biology; 8; 9; 12-2002; 867-8711354-1013CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1046/j.1365-2486.2002.00524.xinfo:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/abs/10.1046/j.1365-2486.2002.00524.xinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:37:29Zoai:ri.conicet.gov.ar:11336/152138instacron: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:34982025-09-29 09:37:29.68CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Solar UV-B radiation affects below-ground parameters in a fen ecosystem in Tierra del Fuego, Argentina: Implications of stratospheric ozone depletion
title Solar UV-B radiation affects below-ground parameters in a fen ecosystem in Tierra del Fuego, Argentina: Implications of stratospheric ozone depletion
spellingShingle Solar UV-B radiation affects below-ground parameters in a fen ecosystem in Tierra del Fuego, Argentina: Implications of stratospheric ozone depletion
Zaller, Johann G.
MYCORRHIZAL SYMBIOSIS
ROOT GROWTH
SOUTHERN HEMISPHERE
ULTRAVIOLET-B RADIATION
title_short Solar UV-B radiation affects below-ground parameters in a fen ecosystem in Tierra del Fuego, Argentina: Implications of stratospheric ozone depletion
title_full Solar UV-B radiation affects below-ground parameters in a fen ecosystem in Tierra del Fuego, Argentina: Implications of stratospheric ozone depletion
title_fullStr Solar UV-B radiation affects below-ground parameters in a fen ecosystem in Tierra del Fuego, Argentina: Implications of stratospheric ozone depletion
title_full_unstemmed Solar UV-B radiation affects below-ground parameters in a fen ecosystem in Tierra del Fuego, Argentina: Implications of stratospheric ozone depletion
title_sort Solar UV-B radiation affects below-ground parameters in a fen ecosystem in Tierra del Fuego, Argentina: Implications of stratospheric ozone depletion
dc.creator.none.fl_str_mv Zaller, Johann G.
Caldwell, Martyn M.
Flint, Stephan D.
Scopel, Ana Leonor
Sala, Osvaldo Esteban
Ballare, Carlos Luis
author Zaller, Johann G.
author_facet Zaller, Johann G.
Caldwell, Martyn M.
Flint, Stephan D.
Scopel, Ana Leonor
Sala, Osvaldo Esteban
Ballare, Carlos Luis
author_role author
author2 Caldwell, Martyn M.
Flint, Stephan D.
Scopel, Ana Leonor
Sala, Osvaldo Esteban
Ballare, Carlos Luis
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv MYCORRHIZAL SYMBIOSIS
ROOT GROWTH
SOUTHERN HEMISPHERE
ULTRAVIOLET-B RADIATION
topic MYCORRHIZAL SYMBIOSIS
ROOT GROWTH
SOUTHERN HEMISPHERE
ULTRAVIOLET-B RADIATION
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Stratospheric ozone depletion caused by the release of chlorofluorocarbons is most pronounced at high latitudes, especially in the Southern Hemisphere (including the so- called 'ozone hole'). The consequent increase in solar ultraviolet-B radiation (UV-B, 280-315 nm) reaching the earth's surface may cause a variety of alterations in terrestrial ecosystems. Most effects might be expected to occur above-ground since sunlight does not penetrate effectively below-ground. Here, we demonstrate that solar UV-B radiation in a fen in Tierra del Fuego (Argentina), where the ozone hole passes overhead several times during the Austral spring, is causing large changes of below-ground processes of this ecosystem. During the third and fourth year of a manipulative field experiment, we investigated root systems in these plots and found that when the ambient solar UV-B radiation was substantially reduced, there was a 30% increase in summer root length production and as much as a threefold decrease in already low symbiotic mycorrhizal colonization frequency of the roots compared with plots receiving near-ambient solar UV-B. There was also an apparent shift toward older age classes of roots under reduced solar UV-B. Such large changes in root system behaviour may have decided effects on competition and other ecological interactions in this ecosystem.
Fil: Zaller, Johann G.. Utah State University; Estados Unidos. Universitat Bonn; Alemania
Fil: Caldwell, Martyn M.. Utah State University; Estados Unidos
Fil: Flint, Stephan D.. Utah State University; Estados Unidos
Fil: Scopel, Ana Leonor. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura; Argentina
Fil: Sala, Osvaldo Esteban. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura; Argentina
Fil: Ballare, Carlos Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura; Argentina
description Stratospheric ozone depletion caused by the release of chlorofluorocarbons is most pronounced at high latitudes, especially in the Southern Hemisphere (including the so- called 'ozone hole'). The consequent increase in solar ultraviolet-B radiation (UV-B, 280-315 nm) reaching the earth's surface may cause a variety of alterations in terrestrial ecosystems. Most effects might be expected to occur above-ground since sunlight does not penetrate effectively below-ground. Here, we demonstrate that solar UV-B radiation in a fen in Tierra del Fuego (Argentina), where the ozone hole passes overhead several times during the Austral spring, is causing large changes of below-ground processes of this ecosystem. During the third and fourth year of a manipulative field experiment, we investigated root systems in these plots and found that when the ambient solar UV-B radiation was substantially reduced, there was a 30% increase in summer root length production and as much as a threefold decrease in already low symbiotic mycorrhizal colonization frequency of the roots compared with plots receiving near-ambient solar UV-B. There was also an apparent shift toward older age classes of roots under reduced solar UV-B. Such large changes in root system behaviour may have decided effects on competition and other ecological interactions in this ecosystem.
publishDate 2002
dc.date.none.fl_str_mv 2002-12
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/11336/152138
Zaller, Johann G.; Caldwell, Martyn M.; Flint, Stephan D.; Scopel, Ana Leonor; Sala, Osvaldo Esteban; et al.; Solar UV-B radiation affects below-ground parameters in a fen ecosystem in Tierra del Fuego, Argentina: Implications of stratospheric ozone depletion; Wiley Blackwell Publishing, Inc; Global Change Biology; 8; 9; 12-2002; 867-871
1354-1013
CONICET Digital
CONICET
url http://hdl.handle.net/11336/152138
identifier_str_mv Zaller, Johann G.; Caldwell, Martyn M.; Flint, Stephan D.; Scopel, Ana Leonor; Sala, Osvaldo Esteban; et al.; Solar UV-B radiation affects below-ground parameters in a fen ecosystem in Tierra del Fuego, Argentina: Implications of stratospheric ozone depletion; Wiley Blackwell Publishing, Inc; Global Change Biology; 8; 9; 12-2002; 867-871
1354-1013
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1046/j.1365-2486.2002.00524.x
info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/abs/10.1046/j.1365-2486.2002.00524.x
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Wiley Blackwell Publishing, Inc
publisher.none.fl_str_mv Wiley Blackwell Publishing, Inc
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 13.070432

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