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dc.contributor.author
Simi, E.
dc.contributor.author
Moreno, P. I.
dc.contributor.author
Villa Martinez, R.
dc.contributor.author
Vilanova, Isabel
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de Pol-Holz, R.
dc.date.available
2018-06-12T20:39:17Z
dc.date.issued
2017-08
dc.identifier.citation
Simi, E.; Moreno, P. I.; Villa Martinez, R.; Vilanova, Isabel; de Pol-Holz, R.; Climate change and resilience of deciduous Nothofagus forests in central-east Chilean Patagonia over the last 3200 years; John Wiley & Sons Ltd; Journal Of Quaternary Science; 32; 6; 8-2017; 845-856
dc.identifier.issn
0267-8179
dc.identifier.uri
http://hdl.handle.net/11336/48452
dc.description.abstract
We examine the response of Nothofagus forests to climate change and disturbance regimes over the last 3200 years near Coyhaique (45˚S), central–east Chilean Patagonia, using fine-resolution pollen and charcoal records from lake sediment cores. Closed-canopy deciduous Nothofagus forests have dominated the region with little variation until the arrival of Chilean–European settlers, suggesting a predominance of cool-temperate and wet conditions. Within this state we identify centennial-scale episodes of forest fragmentation, increase in littoral macrophytes and volcanic/paleofire disturbance between 2700 and 3000 cal a BP, 2200 and 2500 cal a BP and over the last 250 years, which we interpret as intervals with negative hydrologic balance. Natural variability caused little impact on the physiognomy and composition of the vegetation in pre-European time, in contrast to the accelerated shift that started during the late 19th century associated with deforestation, homogenization and synchronization of ecosystem changes at the landscape level, and spread of exotic plant species brought by Chilean and European settlers during a warm/dry interval. The resilience of deciduous Nothofagus forests to natural disturbance regimes and climate change was exceeded by large-scale human disturbance since the late 19th century by fire, timber exploitation and livestock grazing. These disturbances caused an ecosystem shift towards artificial meadows and scrublands with frequent high-magnitude fires.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
John Wiley & Sons Ltd
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Human Disturbance
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Nothofagus Forest
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Paleofires
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Tephras
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Resilience
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Meteorología y Ciencias Atmosféricas
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Ciencias de la Tierra y relacionadas con el Medio Ambiente
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CIENCIAS NATURALES Y EXACTAS
dc.title
Climate change and resilience of deciduous Nothofagus forests in central-east Chilean Patagonia over the last 3200 years
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-06-04T13:53:19Z
dc.identifier.eissn
1099-1417
dc.journal.volume
32
dc.journal.number
6
dc.journal.pagination
845-856
dc.journal.pais
Reino Unido
dc.journal.ciudad
Londres
dc.description.fil
Fil: Simi, E.. Universidad de Chile; Chile
dc.description.fil
Fil: Moreno, P. I.. Universidad de Chile; Chile
dc.description.fil
Fil: Villa Martinez, R.. Universidad de Magallanes; Chile
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Fil: Vilanova, Isabel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina
dc.description.fil
Fil: de Pol-Holz, R.. Universidad de Magallanes; Chile
dc.journal.title
Journal Of Quaternary Science
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://dx.doi.org/10.1002/jqs.2948
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/abs/10.1002/jqs.2948
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