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
.jpg)
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/152138
Ver los metadatos del registro completo
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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 Técnicas2025-10-22T11:05:37Zoai: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:34982025-10-22 11:05:38.284CONICET 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 |
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2002-12 |
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info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
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article |
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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 |
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eng |
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Wiley Blackwell Publishing, Inc |
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Wiley Blackwell Publishing, Inc |
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CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
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