Pollen and fungal remains as environmental indicators in surface sediments of Isla Grande de Tierra del Fuego, southernmost Patagonia

Autores
Musotto, Lorena Laura; Bianchinotti, Maria Virginia; Borromei, Ana Maria
Año de publicación
2012
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Palynological studies have been performed in order to increase knowledge of relations between present vegetation and fungal biota. The analysis of modern analogues will help to improve the palaeoenvironmental reconstructions of fossil sequences from Isla Grande de Tierra del Fuego. A total of 24 fungal taxa have been found, described and illustrated. Surface samples were collected from the different vegetation communities developed on the island: steppe, Nothofagus forest–steppe ecotone and Nothofagus forest. The steppe is characterised by a predominance of Poaceae pollen accompanied by Nothofagus pollen (up to 30%) and spores of Glomus sp. In the forest–steppe ecotone, Nothofagus pollen frequencies rise up to 50% along with dwarf shrub heath communities and Gaeumannomyces species. In the forest unit, the percentage values of Nothofagus pollen surpass 50%. Among the fungal remains, fructifications of Microthyriaceae and dematiaceous spores such as Alternaria sp., Dictyosporium sp. and Sporidesmium sp. are present in forest samples and may be related to damp environments. Ascospores of the coprophilous Sordaria-type and Sporormiella-type appear to be common and are probably associated with livestock grazing. Fungal remains are very scarce in some of the samples obtained in mire environments. The ecological requirements of some of the fungi identified allowed inferences about the local conditions of the sampled site. This study demonstrates the palaeoenvironmental indicator value of fungal components and encourages further investigation of surface samples considering local habitat features to obtain a better understanding of local environmental conditions in the past.
Fil: Musotto, Lorena Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto Geológico del Sur. Universidad Nacional del Sur. Departamento de Geología. Instituto Geológico del Sur; Argentina
Fil: Bianchinotti, Maria Virginia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Centro de Recursos Naturales Renovables de la Zona Semiarida. Universidad Nacional del Sur. Centro de Recursos Naturales Renovables de la Zona Semiarida; Argentina
Fil: Borromei, Ana Maria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto Geológico del Sur. Universidad Nacional del Sur. Departamento de Geología. Instituto Geológico del Sur; Argentina
Materia
POLLEN
FUNGI
SURFACE SAMPLES
MODERN ANALOGUES
VEGETATION
TIERRA DEL FUEGO
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:11336/20238
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/20238
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Pollen and fungal remains as environmental indicators in surface sediments of Isla Grande de Tierra del Fuego, southernmost PatagoniaMusotto, Lorena LauraBianchinotti, Maria VirginiaBorromei, Ana MariaPOLLENFUNGISURFACE SAMPLESMODERN ANALOGUESVEGETATIONTIERRA DEL FUEGOhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1https://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Palynological studies have been performed in order to increase knowledge of relations between present vegetation and fungal biota. The analysis of modern analogues will help to improve the palaeoenvironmental reconstructions of fossil sequences from Isla Grande de Tierra del Fuego. A total of 24 fungal taxa have been found, described and illustrated. Surface samples were collected from the different vegetation communities developed on the island: steppe, Nothofagus forest–steppe ecotone and Nothofagus forest. The steppe is characterised by a predominance of Poaceae pollen accompanied by Nothofagus pollen (up to 30%) and spores of Glomus sp. In the forest–steppe ecotone, Nothofagus pollen frequencies rise up to 50% along with dwarf shrub heath communities and Gaeumannomyces species. In the forest unit, the percentage values of Nothofagus pollen surpass 50%. Among the fungal remains, fructifications of Microthyriaceae and dematiaceous spores such as Alternaria sp., Dictyosporium sp. and Sporidesmium sp. are present in forest samples and may be related to damp environments. Ascospores of the coprophilous Sordaria-type and Sporormiella-type appear to be common and are probably associated with livestock grazing. Fungal remains are very scarce in some of the samples obtained in mire environments. The ecological requirements of some of the fungi identified allowed inferences about the local conditions of the sampled site. This study demonstrates the palaeoenvironmental indicator value of fungal components and encourages further investigation of surface samples considering local habitat features to obtain a better understanding of local environmental conditions in the past.Fil: Musotto, Lorena Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto Geológico del Sur. Universidad Nacional del Sur. Departamento de Geología. Instituto Geológico del Sur; ArgentinaFil: Bianchinotti, Maria Virginia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Centro de Recursos Naturales Renovables de la Zona Semiarida. Universidad Nacional del Sur. Centro de Recursos Naturales Renovables de la Zona Semiarida; ArgentinaFil: Borromei, Ana Maria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto Geológico del Sur. Universidad Nacional del Sur. Departamento de Geología. Instituto Geológico del Sur; ArgentinaAmerican Association of Stratigraphic Palynologists Foundation2012-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/20238Musotto, Lorena Laura; Bianchinotti, Maria Virginia; Borromei, Ana Maria; Pollen and fungal remains as environmental indicators in surface sediments of Isla Grande de Tierra del Fuego, southernmost Patagonia; American Association of Stratigraphic Palynologists Foundation; Palynology; 36; 2; 4-2012; 162-1790191-6122CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1080/01916122.2012.662919info:eu-repo/semantics/altIdentifier/url/http://www.tandfonline.com/doi/full/10.1080/01916122.2012.662919?scroll=top&needAccess=trueinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:15:18Zoai:ri.conicet.gov.ar:11336/20238instacron: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 11:15:18.376CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Pollen and fungal remains as environmental indicators in surface sediments of Isla Grande de Tierra del Fuego, southernmost Patagonia
title Pollen and fungal remains as environmental indicators in surface sediments of Isla Grande de Tierra del Fuego, southernmost Patagonia
spellingShingle Pollen and fungal remains as environmental indicators in surface sediments of Isla Grande de Tierra del Fuego, southernmost Patagonia
Musotto, Lorena Laura
POLLEN
FUNGI
SURFACE SAMPLES
MODERN ANALOGUES
VEGETATION
TIERRA DEL FUEGO
title_short Pollen and fungal remains as environmental indicators in surface sediments of Isla Grande de Tierra del Fuego, southernmost Patagonia
title_full Pollen and fungal remains as environmental indicators in surface sediments of Isla Grande de Tierra del Fuego, southernmost Patagonia
title_fullStr Pollen and fungal remains as environmental indicators in surface sediments of Isla Grande de Tierra del Fuego, southernmost Patagonia
title_full_unstemmed Pollen and fungal remains as environmental indicators in surface sediments of Isla Grande de Tierra del Fuego, southernmost Patagonia
title_sort Pollen and fungal remains as environmental indicators in surface sediments of Isla Grande de Tierra del Fuego, southernmost Patagonia
dc.creator.none.fl_str_mv Musotto, Lorena Laura
Bianchinotti, Maria Virginia
Borromei, Ana Maria
author Musotto, Lorena Laura
author_facet Musotto, Lorena Laura
Bianchinotti, Maria Virginia
Borromei, Ana Maria
author_role author
author2 Bianchinotti, Maria Virginia
Borromei, Ana Maria
author2_role author
author
dc.subject.none.fl_str_mv POLLEN
FUNGI
SURFACE SAMPLES
MODERN ANALOGUES
VEGETATION
TIERRA DEL FUEGO
topic POLLEN
FUNGI
SURFACE SAMPLES
MODERN ANALOGUES
VEGETATION
TIERRA DEL FUEGO
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Palynological studies have been performed in order to increase knowledge of relations between present vegetation and fungal biota. The analysis of modern analogues will help to improve the palaeoenvironmental reconstructions of fossil sequences from Isla Grande de Tierra del Fuego. A total of 24 fungal taxa have been found, described and illustrated. Surface samples were collected from the different vegetation communities developed on the island: steppe, Nothofagus forest–steppe ecotone and Nothofagus forest. The steppe is characterised by a predominance of Poaceae pollen accompanied by Nothofagus pollen (up to 30%) and spores of Glomus sp. In the forest–steppe ecotone, Nothofagus pollen frequencies rise up to 50% along with dwarf shrub heath communities and Gaeumannomyces species. In the forest unit, the percentage values of Nothofagus pollen surpass 50%. Among the fungal remains, fructifications of Microthyriaceae and dematiaceous spores such as Alternaria sp., Dictyosporium sp. and Sporidesmium sp. are present in forest samples and may be related to damp environments. Ascospores of the coprophilous Sordaria-type and Sporormiella-type appear to be common and are probably associated with livestock grazing. Fungal remains are very scarce in some of the samples obtained in mire environments. The ecological requirements of some of the fungi identified allowed inferences about the local conditions of the sampled site. This study demonstrates the palaeoenvironmental indicator value of fungal components and encourages further investigation of surface samples considering local habitat features to obtain a better understanding of local environmental conditions in the past.
Fil: Musotto, Lorena Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto Geológico del Sur. Universidad Nacional del Sur. Departamento de Geología. Instituto Geológico del Sur; Argentina
Fil: Bianchinotti, Maria Virginia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Centro de Recursos Naturales Renovables de la Zona Semiarida. Universidad Nacional del Sur. Centro de Recursos Naturales Renovables de la Zona Semiarida; Argentina
Fil: Borromei, Ana Maria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto Geológico del Sur. Universidad Nacional del Sur. Departamento de Geología. Instituto Geológico del Sur; Argentina
description Palynological studies have been performed in order to increase knowledge of relations between present vegetation and fungal biota. The analysis of modern analogues will help to improve the palaeoenvironmental reconstructions of fossil sequences from Isla Grande de Tierra del Fuego. A total of 24 fungal taxa have been found, described and illustrated. Surface samples were collected from the different vegetation communities developed on the island: steppe, Nothofagus forest–steppe ecotone and Nothofagus forest. The steppe is characterised by a predominance of Poaceae pollen accompanied by Nothofagus pollen (up to 30%) and spores of Glomus sp. In the forest–steppe ecotone, Nothofagus pollen frequencies rise up to 50% along with dwarf shrub heath communities and Gaeumannomyces species. In the forest unit, the percentage values of Nothofagus pollen surpass 50%. Among the fungal remains, fructifications of Microthyriaceae and dematiaceous spores such as Alternaria sp., Dictyosporium sp. and Sporidesmium sp. are present in forest samples and may be related to damp environments. Ascospores of the coprophilous Sordaria-type and Sporormiella-type appear to be common and are probably associated with livestock grazing. Fungal remains are very scarce in some of the samples obtained in mire environments. The ecological requirements of some of the fungi identified allowed inferences about the local conditions of the sampled site. This study demonstrates the palaeoenvironmental indicator value of fungal components and encourages further investigation of surface samples considering local habitat features to obtain a better understanding of local environmental conditions in the past.
publishDate 2012
dc.date.none.fl_str_mv 2012-04
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/11336/20238
Musotto, Lorena Laura; Bianchinotti, Maria Virginia; Borromei, Ana Maria; Pollen and fungal remains as environmental indicators in surface sediments of Isla Grande de Tierra del Fuego, southernmost Patagonia; American Association of Stratigraphic Palynologists Foundation; Palynology; 36; 2; 4-2012; 162-179
0191-6122
CONICET Digital
CONICET
url http://hdl.handle.net/11336/20238
identifier_str_mv Musotto, Lorena Laura; Bianchinotti, Maria Virginia; Borromei, Ana Maria; Pollen and fungal remains as environmental indicators in surface sediments of Isla Grande de Tierra del Fuego, southernmost Patagonia; American Association of Stratigraphic Palynologists Foundation; Palynology; 36; 2; 4-2012; 162-179
0191-6122
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1080/01916122.2012.662919
info:eu-repo/semantics/altIdentifier/url/http://www.tandfonline.com/doi/full/10.1080/01916122.2012.662919?scroll=top&needAccess=true
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
application/pdf
dc.publisher.none.fl_str_mv American Association of Stratigraphic Palynologists Foundation
publisher.none.fl_str_mv American Association of Stratigraphic Palynologists Foundation
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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