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dc.contributor.author
Musotto, Lorena Laura
dc.contributor.author
Bianchinotti, Maria Virginia
dc.contributor.author
Borromei, Ana Maria
dc.date.available
2017-07-12T18:26:46Z
dc.date.issued
2012-04
dc.identifier.citation
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; Amer Assoc Stratigraphic Palynologists Foundation; Palynology; 36; 2; 4-2012; 162-179
dc.identifier.issn
0191-6122
dc.identifier.uri
http://hdl.handle.net/11336/20238
dc.description.abstract
Palynological studies (pollen and fungal remains) have been performed in order to increase the knowledge of 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 30 fungal remains have been found, described and illustrated for further reference. Surface samples were collected from the different vegetation communities developed in the island: steppe, Nothofagus forest-steppe ecotone and Nothofagus forest. The steppe is characterized by predominance of Poaceae pollen aPalynological studies (pollen and fungal remains) have been performed in order to increase the knowledge of 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 30 fungal remains have been found, described and illustrated for further reference. Surface samples were collected from the different vegetation communities developed in the island: steppe, Nothofagus forest-steppe ecotone and Nothofagus forest. The steppe is characterized by predominance of Poaceae pollen accompanied by Nothofagus pollen (up to 30%) and spores of Glomus sp. The forest-steppe ecotone displays increases in Nothofagus pollen frequency (up to 50 %) along with dwarf shrub heath communities and records of 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 probably related to damp environments. Ascospores of the coprophilous Sordaria-type and Sporormiella sp. appeared to be of common occurrence 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 local conditions of sampled site. This study showed the palaeoenvironmental indicator value of fungal components and encourages further investigation of surface samples considering local habitat features to arrive at sharper indication.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Amer Assoc Stratigraphic Palynologists Foundation
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Pollen
dc.subject
Fungi
dc.subject
Tierra del Fuego
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Surface Samples
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Modern Analogues
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Vegetation
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Paleontología
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Ciencias de la Tierra y relacionadas con el Medio Ambiente
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CIENCIAS NATURALES Y EXACTAS
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Micología
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Ciencias Biológicas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Pollen and fungal remains as environmental indicators in surface sediments of Isla Grande de Tierra del Fuego, southernmost Patagonia
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2017-07-03T16:49:39Z
dc.journal.volume
36
dc.journal.number
2
dc.journal.pagination
162-179
dc.journal.pais
Estados Unidos
dc.description.fil
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
dc.description.fil
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
dc.description.fil
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
dc.journal.title
Palynology
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1080/01916122.2012.662919
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://www.tandfonline.com/doi/full/10.1080/01916122.2012.662919?scroll=top&needAccess=true


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