Changes in height growth patterns in the upper tree-line forests of Tierra del Fuego in relation to climate change

Nothofagus pumilio occupy the mountain slopes reaching to the upper altitudinal limit of the forests. This extremely stressful environment represents the optimum conditions to study changes in growth patterns due to climate variations. Our goal was to analyze recent changes in stem height growth in...

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Autores principales:	Ivancich,Horacio S, Martínez Pastur,Guillermo J, Roig,Fidel A, Barrera,Marcelo D, Pulido,Fernando
Lenguaje:	English
Publicado:	Universidad Austral de Chile, Facultad de Ciencias Forestales 2012
Materias:	tree-line Nothofagus height growth climate change forest structure
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-92002012000300006
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spelling	oai:scielo:S0717-920020120003000062014-11-05Changes in height growth patterns in the upper tree-line forests of Tierra del Fuego in relation to climate changeIvancich,Horacio SMartínez Pastur,Guillermo JRoig,Fidel ABarrera,Marcelo DPulido,Fernando tree-line Nothofagus height growth climate change forest structure Nothofagus pumilio occupy the mountain slopes reaching to the upper altitudinal limit of the forests. This extremely stressful environment represents the optimum conditions to study changes in growth patterns due to climate variations. Our goal was to analyze recent changes in stem height growth in forests located in the upper altitudinal tree-line along Tierra del Fuego (Argentina), and establish possible linkages to changes observed in surface temperature during the last decades. Nine locations were sampled, and four plots were measured in each location. Forest structure was characterized, and stem analyses were performed to assess height growth patterns. ANOVAs and classification analyses were conducted using location and time as main variables. Tree-growth height increased with time, e.g. 1.0 cm.year-1 during 1870-1959, 2.7 cm year-1 during 1960-1979, and 5.0 cm year-1 during 1980-2010. These differences were significant between periods and locations, and can be related to its geographical situation. Increment in stem height growth seems to be related with the worldwide surface air temperature. A decline in stem height growth registered during the last two decades can also be related with the regional decrease in the mean air temperature. The analysis of stem height growth is a useful tool to evaluate the incidence of climate change over trees growing under extreme environmental conditions.info:eu-repo/semantics/openAccessUniversidad Austral de Chile, Facultad de Ciencias ForestalesBosque (Valdivia) v.33 n.3 20122012-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-92002012000300006en10.4067/S0717-92002012000300006
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	tree-line Nothofagus height growth climate change forest structure
spellingShingle	tree-line Nothofagus height growth climate change forest structure Ivancich,Horacio S Martínez Pastur,Guillermo J Roig,Fidel A Barrera,Marcelo D Pulido,Fernando Changes in height growth patterns in the upper tree-line forests of Tierra del Fuego in relation to climate change
description	Nothofagus pumilio occupy the mountain slopes reaching to the upper altitudinal limit of the forests. This extremely stressful environment represents the optimum conditions to study changes in growth patterns due to climate variations. Our goal was to analyze recent changes in stem height growth in forests located in the upper altitudinal tree-line along Tierra del Fuego (Argentina), and establish possible linkages to changes observed in surface temperature during the last decades. Nine locations were sampled, and four plots were measured in each location. Forest structure was characterized, and stem analyses were performed to assess height growth patterns. ANOVAs and classification analyses were conducted using location and time as main variables. Tree-growth height increased with time, e.g. 1.0 cm.year-1 during 1870-1959, 2.7 cm year-1 during 1960-1979, and 5.0 cm year-1 during 1980-2010. These differences were significant between periods and locations, and can be related to its geographical situation. Increment in stem height growth seems to be related with the worldwide surface air temperature. A decline in stem height growth registered during the last two decades can also be related with the regional decrease in the mean air temperature. The analysis of stem height growth is a useful tool to evaluate the incidence of climate change over trees growing under extreme environmental conditions.
author	Ivancich,Horacio S Martínez Pastur,Guillermo J Roig,Fidel A Barrera,Marcelo D Pulido,Fernando
author_facet	Ivancich,Horacio S Martínez Pastur,Guillermo J Roig,Fidel A Barrera,Marcelo D Pulido,Fernando
author_sort	Ivancich,Horacio S
title	Changes in height growth patterns in the upper tree-line forests of Tierra del Fuego in relation to climate change
title_short	Changes in height growth patterns in the upper tree-line forests of Tierra del Fuego in relation to climate change
title_full	Changes in height growth patterns in the upper tree-line forests of Tierra del Fuego in relation to climate change
title_fullStr	Changes in height growth patterns in the upper tree-line forests of Tierra del Fuego in relation to climate change
title_full_unstemmed	Changes in height growth patterns in the upper tree-line forests of Tierra del Fuego in relation to climate change
title_sort	changes in height growth patterns in the upper tree-line forests of tierra del fuego in relation to climate change
publisher	Universidad Austral de Chile, Facultad de Ciencias Forestales
publishDate	2012
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-92002012000300006
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Changes in height growth patterns in the upper tree-line forests of Tierra del Fuego in relation to climate change

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