Solar UV-B influences microfaunal community composition in a Tierra del Fuego peatland

Autores
Robson, T. Matthew; Pancotto, Veronica Andrea; Scopel, Ana Leonor; Flint, Stephan D.; Caldwell, Martyn M.
Año de publicación
2005
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The peatlands of Tierra del Fuego are subject to increased solar ultraviolet-B radiation (UV-B) due to the influence of the Antarctic "ozone hole". Research into the effects of climate change and ozone depletion on peatlands has predominantly focused on the higher plant community and neglected other organisms. In the second 3-year portion of a 6-year experiment, we intensified our investigations of the response of the peatland surface microfaunal community to current and attenuated solar UV-B, and assessed possible links to changes in the microenvironment. Near-ambient UV-B and reduced UV-B treatments were realised by stretching plastic film filters that differentially attenuate UV-B over peatland sample plots. We extracted the microfauna and analysed the dissolved nutrients held within Sphagnum capitula removed from the top 1-cm of the peatland. In line with previous findings in this system, testate amoebae were more abundant under near-ambient UV-B than under reduced UV-B. Populations of the most common genus, Assulina, and other less prominent amoebae species of Heleopera and Euglypha, were consistently increased under near-ambient UV-B. Overall diversity of testate amoebae was also higher under near-ambient UV-B than under reduced UV-B, whereas rotifers, nematodes and mites were less abundant under near-ambient UV-B. Concentrations of DOC and P were generally higher under near-ambient UV-B than under reduced UV-B. These changes, combined with the changes previously reported in the plant and fungal communities, have the potential to influence peatland C storage, and surface nutrient availability. The peatland microfaunal community under near-ambient solar UV-B may be regulated by the plant community through the leaching of nutrients from leaf cells, and changes in Sphagnum morphology that affect the capitulum microenvironment.
Fil: Robson, T. Matthew. State University of Utah; Estados Unidos
Fil: Pancotto, Veronica Andrea. 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: 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: Flint, Stephan D.. State University of Utah; Estados Unidos
Fil: Caldwell, Martyn M.. State University of Utah; Estados Unidos
Materia
ACARI MITES
BIOGEOCHEMISTRY
DIVERSITY
NEMATODE
OZONE DEPLETION
ROTIFER
TESTATE AMOEBAE
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:11336/132719

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network_name_str CONICET Digital (CONICET)
spelling Solar UV-B influences microfaunal community composition in a Tierra del Fuego peatlandRobson, T. MatthewPancotto, Veronica AndreaScopel, Ana LeonorFlint, Stephan D.Caldwell, Martyn M.ACARI MITESBIOGEOCHEMISTRYDIVERSITYNEMATODEOZONE DEPLETIONROTIFERTESTATE AMOEBAEhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1The peatlands of Tierra del Fuego are subject to increased solar ultraviolet-B radiation (UV-B) due to the influence of the Antarctic "ozone hole". Research into the effects of climate change and ozone depletion on peatlands has predominantly focused on the higher plant community and neglected other organisms. In the second 3-year portion of a 6-year experiment, we intensified our investigations of the response of the peatland surface microfaunal community to current and attenuated solar UV-B, and assessed possible links to changes in the microenvironment. Near-ambient UV-B and reduced UV-B treatments were realised by stretching plastic film filters that differentially attenuate UV-B over peatland sample plots. We extracted the microfauna and analysed the dissolved nutrients held within Sphagnum capitula removed from the top 1-cm of the peatland. In line with previous findings in this system, testate amoebae were more abundant under near-ambient UV-B than under reduced UV-B. Populations of the most common genus, Assulina, and other less prominent amoebae species of Heleopera and Euglypha, were consistently increased under near-ambient UV-B. Overall diversity of testate amoebae was also higher under near-ambient UV-B than under reduced UV-B, whereas rotifers, nematodes and mites were less abundant under near-ambient UV-B. Concentrations of DOC and P were generally higher under near-ambient UV-B than under reduced UV-B. These changes, combined with the changes previously reported in the plant and fungal communities, have the potential to influence peatland C storage, and surface nutrient availability. The peatland microfaunal community under near-ambient solar UV-B may be regulated by the plant community through the leaching of nutrients from leaf cells, and changes in Sphagnum morphology that affect the capitulum microenvironment.Fil: Robson, T. Matthew. State University of Utah; Estados UnidosFil: Pancotto, Veronica Andrea. 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: 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: Flint, Stephan D.. State University of Utah; Estados UnidosFil: Caldwell, Martyn M.. State University of Utah; Estados UnidosPergamon-Elsevier Science Ltd2005-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/mswordapplication/pdfhttp://hdl.handle.net/11336/132719Robson, T. Matthew; Pancotto, Veronica Andrea; Scopel, Ana Leonor; Flint, Stephan D.; Caldwell, Martyn M.; Solar UV-B influences microfaunal community composition in a Tierra del Fuego peatland; Pergamon-Elsevier Science Ltd; Soil Biology And Biochemistry; 37; 12; 12-2005; 2205-22150038-0717CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0038071705001513info:eu-repo/semantics/altIdentifier/doi/10.1016/j.soilbio.2005.04.002info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:48:22Zoai:ri.conicet.gov.ar:11336/132719instacron: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 09:48:22.815CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Solar UV-B influences microfaunal community composition in a Tierra del Fuego peatland
title Solar UV-B influences microfaunal community composition in a Tierra del Fuego peatland
spellingShingle Solar UV-B influences microfaunal community composition in a Tierra del Fuego peatland
Robson, T. Matthew
ACARI MITES
BIOGEOCHEMISTRY
DIVERSITY
NEMATODE
OZONE DEPLETION
ROTIFER
TESTATE AMOEBAE
title_short Solar UV-B influences microfaunal community composition in a Tierra del Fuego peatland
title_full Solar UV-B influences microfaunal community composition in a Tierra del Fuego peatland
title_fullStr Solar UV-B influences microfaunal community composition in a Tierra del Fuego peatland
title_full_unstemmed Solar UV-B influences microfaunal community composition in a Tierra del Fuego peatland
title_sort Solar UV-B influences microfaunal community composition in a Tierra del Fuego peatland
dc.creator.none.fl_str_mv Robson, T. Matthew
Pancotto, Veronica Andrea
Scopel, Ana Leonor
Flint, Stephan D.
Caldwell, Martyn M.
author Robson, T. Matthew
author_facet Robson, T. Matthew
Pancotto, Veronica Andrea
Scopel, Ana Leonor
Flint, Stephan D.
Caldwell, Martyn M.
author_role author
author2 Pancotto, Veronica Andrea
Scopel, Ana Leonor
Flint, Stephan D.
Caldwell, Martyn M.
author2_role author
author
author
author
dc.subject.none.fl_str_mv ACARI MITES
BIOGEOCHEMISTRY
DIVERSITY
NEMATODE
OZONE DEPLETION
ROTIFER
TESTATE AMOEBAE
topic ACARI MITES
BIOGEOCHEMISTRY
DIVERSITY
NEMATODE
OZONE DEPLETION
ROTIFER
TESTATE AMOEBAE
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The peatlands of Tierra del Fuego are subject to increased solar ultraviolet-B radiation (UV-B) due to the influence of the Antarctic "ozone hole". Research into the effects of climate change and ozone depletion on peatlands has predominantly focused on the higher plant community and neglected other organisms. In the second 3-year portion of a 6-year experiment, we intensified our investigations of the response of the peatland surface microfaunal community to current and attenuated solar UV-B, and assessed possible links to changes in the microenvironment. Near-ambient UV-B and reduced UV-B treatments were realised by stretching plastic film filters that differentially attenuate UV-B over peatland sample plots. We extracted the microfauna and analysed the dissolved nutrients held within Sphagnum capitula removed from the top 1-cm of the peatland. In line with previous findings in this system, testate amoebae were more abundant under near-ambient UV-B than under reduced UV-B. Populations of the most common genus, Assulina, and other less prominent amoebae species of Heleopera and Euglypha, were consistently increased under near-ambient UV-B. Overall diversity of testate amoebae was also higher under near-ambient UV-B than under reduced UV-B, whereas rotifers, nematodes and mites were less abundant under near-ambient UV-B. Concentrations of DOC and P were generally higher under near-ambient UV-B than under reduced UV-B. These changes, combined with the changes previously reported in the plant and fungal communities, have the potential to influence peatland C storage, and surface nutrient availability. The peatland microfaunal community under near-ambient solar UV-B may be regulated by the plant community through the leaching of nutrients from leaf cells, and changes in Sphagnum morphology that affect the capitulum microenvironment.
Fil: Robson, T. Matthew. State University of Utah; Estados Unidos
Fil: Pancotto, Veronica Andrea. 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: 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: Flint, Stephan D.. State University of Utah; Estados Unidos
Fil: Caldwell, Martyn M.. State University of Utah; Estados Unidos
description The peatlands of Tierra del Fuego are subject to increased solar ultraviolet-B radiation (UV-B) due to the influence of the Antarctic "ozone hole". Research into the effects of climate change and ozone depletion on peatlands has predominantly focused on the higher plant community and neglected other organisms. In the second 3-year portion of a 6-year experiment, we intensified our investigations of the response of the peatland surface microfaunal community to current and attenuated solar UV-B, and assessed possible links to changes in the microenvironment. Near-ambient UV-B and reduced UV-B treatments were realised by stretching plastic film filters that differentially attenuate UV-B over peatland sample plots. We extracted the microfauna and analysed the dissolved nutrients held within Sphagnum capitula removed from the top 1-cm of the peatland. In line with previous findings in this system, testate amoebae were more abundant under near-ambient UV-B than under reduced UV-B. Populations of the most common genus, Assulina, and other less prominent amoebae species of Heleopera and Euglypha, were consistently increased under near-ambient UV-B. Overall diversity of testate amoebae was also higher under near-ambient UV-B than under reduced UV-B, whereas rotifers, nematodes and mites were less abundant under near-ambient UV-B. Concentrations of DOC and P were generally higher under near-ambient UV-B than under reduced UV-B. These changes, combined with the changes previously reported in the plant and fungal communities, have the potential to influence peatland C storage, and surface nutrient availability. The peatland microfaunal community under near-ambient solar UV-B may be regulated by the plant community through the leaching of nutrients from leaf cells, and changes in Sphagnum morphology that affect the capitulum microenvironment.
publishDate 2005
dc.date.none.fl_str_mv 2005-12
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/11336/132719
Robson, T. Matthew; Pancotto, Veronica Andrea; Scopel, Ana Leonor; Flint, Stephan D.; Caldwell, Martyn M.; Solar UV-B influences microfaunal community composition in a Tierra del Fuego peatland; Pergamon-Elsevier Science Ltd; Soil Biology And Biochemistry; 37; 12; 12-2005; 2205-2215
0038-0717
CONICET Digital
CONICET
url http://hdl.handle.net/11336/132719
identifier_str_mv Robson, T. Matthew; Pancotto, Veronica Andrea; Scopel, Ana Leonor; Flint, Stephan D.; Caldwell, Martyn M.; Solar UV-B influences microfaunal community composition in a Tierra del Fuego peatland; Pergamon-Elsevier Science Ltd; Soil Biology And Biochemistry; 37; 12; 12-2005; 2205-2215
0038-0717
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.sciencedirect.com/science/article/pii/S0038071705001513
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.soilbio.2005.04.002
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/msword
application/pdf
dc.publisher.none.fl_str_mv Pergamon-Elsevier Science Ltd
publisher.none.fl_str_mv Pergamon-Elsevier Science Ltd
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
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