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dc.contributor.author
Musotto, Lorena Laura
dc.contributor.author
Borromei, Ana Maria
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Bianchinotti, Maria Virginia
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Coronato, Andrea Maria Josefa
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Menounos, Brian
dc.contributor.author
Osborn, Gerald
dc.contributor.author
Marr, Robert
dc.date.available
2018-10-30T18:50:50Z
dc.date.issued
2017-03
dc.identifier.citation
Musotto, Lorena Laura; Borromei, Ana Maria; Bianchinotti, Maria Virginia; Coronato, Andrea Maria Josefa; Menounos, Brian; et al.; Postglacial environments in the southern coast of Lago Fagnano, central Tierra del Fuego, Argentina, based on pollen and fungal microfossils analyses; Elsevier Science; Review of Palaeobotany and Palynology; 238; 3-2017; 43-54
dc.identifier.issn
0034-6667
dc.identifier.uri
http://hdl.handle.net/11336/63335
dc.description.abstract
We analyzed a peat-bog sequence from the central region of Tierra del Fuego, southernmost Patagonia, to reconstruct the environmental changes over the past 15,000 years. Postglacial vegetation was mainly composed by grasslands and shrubby communities with sparsely distributed Nothofagus trees under dry conditions. The predominance of Glomus sp. and Gelasinospora sp. may also indicate less humid conditions related to the steppe communities. The presence of herbivorous grazers is suggested by the record of ascospores of coprophilous Sordaria-type and Sporormiella-type throughout the profile. Between 11,200 and 6500 cal yr BP, the Nothofagus woodland established under warmer and wetter climate than before. However, precipitation must have remained below present-day levels. Most fungal remains (Gaeumannomyces sp., Glomus sp., Gelasinospora sp., Microthyriaceae, Spegazzinia tessarthra, Alternaria sp.) are likely associated with the development of forest-steppe ecotone communities. Following 6500 cal yr BP, when climate conditions were more humid and colder than before, the closed-canopy forest dominated the landscape, and Microthyriaceae remains prevailed among fungi. During the last 1000 years, the record showed open forest communities accompanied by the presence of Glomus sp. These palaeoenvironmental changes observed along the sequence suggested variations in the amount of precipitation of westerly origin related to shifts in the position and/or strength of the southern margin of the westerlies. This study revealed that fungal remains complement pollen/spores analysis by providing important independent information on the palaeoenvironmental and palaeoclimate conditions that prevailed during the late Pleistocene-Holocene in the Lago Fagnano area.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier Science
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.subject
Palynology
dc.subject
Fungal Records
dc.subject
Postglacial
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Tierra del Fuego
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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
dc.title
Postglacial environments in the southern coast of Lago Fagnano, central Tierra del Fuego, Argentina, based on pollen and fungal microfossils analyses
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-10-22T17:10:47Z
dc.journal.volume
238
dc.journal.pagination
43-54
dc.journal.pais
Países Bajos
dc.journal.ciudad
Amsterdam
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: 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.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 Semiárida. Universidad Nacional del Sur. Centro de Recursos Naturales Renovables de la Zona Semiárida; Argentina
dc.description.fil
Fil: Coronato, Andrea Maria Josefa. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
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Fil: Menounos, Brian. University of Northern British Columbia; Canadá
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Fil: Osborn, Gerald. University of Calgary; Canadá
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Fil: Marr, Robert. University of Calgary; Canadá
dc.journal.title
Review of Palaeobotany and Palynology
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0034666716302317
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.revpalbo.2016.11.016


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