Puyehue-Cordón Caulle eruption of 2011: tephra fall and initial forest responses in the Chilean Andes

The 2011 eruption in the Puyehue-Cordón Caulle volcanic complex deposited up to 50 cm of tephra in a plume that intersected the crest of the Andes along Route 215, offering an excellent opportunity to study disturbance effects on native forests along a gradient of tephra depth. Our observations focu...

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Autores principales:	Swanson,Frederick J, Jones,Julia, Crisafulli,Charlie, González,Mauro E, Lara,Antonio
Lenguaje:	English
Publicado:	Universidad Austral de Chile, Facultad de Ciencias Forestales 2016
Materias:	forest disturbance Puyehue-Cordón Caulle tephra fall volcanic disturbance
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-92002016000100009
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spelling	oai:scielo:S0717-920020160001000092016-05-17Puyehue-Cordón Caulle eruption of 2011: tephra fall and initial forest responses in the Chilean AndesSwanson,Frederick JJones,JuliaCrisafulli,CharlieGonzález,Mauro ELara,Antonio forest disturbance Puyehue-Cordón Caulle tephra fall volcanic disturbance The 2011 eruption in the Puyehue-Cordón Caulle volcanic complex deposited up to 50 cm of tephra in a plume that intersected the crest of the Andes along Route 215, offering an excellent opportunity to study disturbance effects on native forests along a gradient of tephra depth. Our observations focused on short-term, species-level, tree mortality and sprouting and tephra fall effects on foliage and limb fall. More than 80 % of the thickest deposits were composed of a basal, pumice, gravel layer containing individual clasts up to 6 cm in length overlain by finer gravel and capped by several cm of sandy tephra. In a sample of four plots with tephra thickness ranging from 10 to 50 cm, we observed a wide range of tree mortality: about 8 % of stems living at the time of the eruption were killed by 10 cm of tephra fall and 54 % were killed by 50 cm. However, properties of the affected forest, such as species composition, foliage sprouting and retention (deciduous versus evergreen) characteristics, and tree size/age, strongly influenced survival. The sites with 35 and 50 cm thick deposits were dominated by the deciduous tree Nothofagus pumilio, which was leafless in the austral winter, season of the initial phase of the eruption. The evergreen tree N. dombeyi experienced much higher mortality. The low density of the falling pumice particles appeared to cause minimal abrasion of the canopy.info:eu-repo/semantics/openAccessUniversidad Austral de Chile, Facultad de Ciencias ForestalesBosque (Valdivia) v.37 n.1 20162016-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-92002016000100009en10.4067/S0717-92002016000100009
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	forest disturbance Puyehue-Cordón Caulle tephra fall volcanic disturbance
spellingShingle	forest disturbance Puyehue-Cordón Caulle tephra fall volcanic disturbance Swanson,Frederick J Jones,Julia Crisafulli,Charlie González,Mauro E Lara,Antonio Puyehue-Cordón Caulle eruption of 2011: tephra fall and initial forest responses in the Chilean Andes
description	The 2011 eruption in the Puyehue-Cordón Caulle volcanic complex deposited up to 50 cm of tephra in a plume that intersected the crest of the Andes along Route 215, offering an excellent opportunity to study disturbance effects on native forests along a gradient of tephra depth. Our observations focused on short-term, species-level, tree mortality and sprouting and tephra fall effects on foliage and limb fall. More than 80 % of the thickest deposits were composed of a basal, pumice, gravel layer containing individual clasts up to 6 cm in length overlain by finer gravel and capped by several cm of sandy tephra. In a sample of four plots with tephra thickness ranging from 10 to 50 cm, we observed a wide range of tree mortality: about 8 % of stems living at the time of the eruption were killed by 10 cm of tephra fall and 54 % were killed by 50 cm. However, properties of the affected forest, such as species composition, foliage sprouting and retention (deciduous versus evergreen) characteristics, and tree size/age, strongly influenced survival. The sites with 35 and 50 cm thick deposits were dominated by the deciduous tree Nothofagus pumilio, which was leafless in the austral winter, season of the initial phase of the eruption. The evergreen tree N. dombeyi experienced much higher mortality. The low density of the falling pumice particles appeared to cause minimal abrasion of the canopy.
author	Swanson,Frederick J Jones,Julia Crisafulli,Charlie González,Mauro E Lara,Antonio
author_facet	Swanson,Frederick J Jones,Julia Crisafulli,Charlie González,Mauro E Lara,Antonio
author_sort	Swanson,Frederick J
title	Puyehue-Cordón Caulle eruption of 2011: tephra fall and initial forest responses in the Chilean Andes
title_short	Puyehue-Cordón Caulle eruption of 2011: tephra fall and initial forest responses in the Chilean Andes
title_full	Puyehue-Cordón Caulle eruption of 2011: tephra fall and initial forest responses in the Chilean Andes
title_fullStr	Puyehue-Cordón Caulle eruption of 2011: tephra fall and initial forest responses in the Chilean Andes
title_full_unstemmed	Puyehue-Cordón Caulle eruption of 2011: tephra fall and initial forest responses in the Chilean Andes
title_sort	puyehue-cordón caulle eruption of 2011: tephra fall and initial forest responses in the chilean andes
publisher	Universidad Austral de Chile, Facultad de Ciencias Forestales
publishDate	2016
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-92002016000100009
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Puyehue-Cordón Caulle eruption of 2011: tephra fall and initial forest responses in the Chilean Andes

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