Early performance of planted Nothofagus dombeyi and Nothofagus alpina in response to light availability and gap size in a high-graded forest in the south-central Andes of Chile

The Andes of south-central Chile (38 - 41° S) were once dominated by highly productive and valuable forests mainly dominated by Nothofagus dombeyi and N. alpina, but their exploitation led to extensive areas at present covered by high-graded stands. Although these tree species exhibit a light-demand...

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Autores principales: Donoso,Pablo J, Soto,Daniel P, Coopman,Rafael E, Rodríguez-Bertos,Silvia
Lenguaje:English
Publicado: Universidad Austral de Chile, Facultad de Ciencias Forestales 2013
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Acceso en línea:http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-92002013000100004
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spelling oai:scielo:S0717-920020130001000042013-04-23Early performance of planted Nothofagus dombeyi and Nothofagus alpina in response to light availability and gap size in a high-graded forest in the south-central Andes of ChileDonoso,Pablo JSoto,Daniel PCoopman,Rafael ERodríguez-Bertos,Silvia degradation restoration tree growth survival shade tolerance The Andes of south-central Chile (38 - 41° S) were once dominated by highly productive and valuable forests mainly dominated by Nothofagus dombeyi and N. alpina, but their exploitation led to extensive areas at present covered by high-graded stands. Although these tree species exhibit a light-demanding character and naturally grow in regions with severe winters, they show high mortality when planted in open areas with frequent spring frosts. The effect of light intensity and gap size on survival, size and form of N. dombeyi and N. alpina seedlings, planted in a high-graded stand, was analyzed. Direct and diffuse light (measured through hemispheric photographs) and effective gap area (range from 40 to 734 m²) were estimated in 23 forest gaps, which were divided into small, medium and large for each species (12 gaps for N. dombeyi and 11 gaps for N. alpina). After two growing seasons, mean survival of N. dombeyi was > 95% and not significantly different among gap categories; in N. alpina there was complete survival in medium-sized gaps, which was significantly different from survival in the larger and smaller gaps. Growth of Nothofagus dombeyi significantly increased with gap size and light availability; a phenomenon which did not occur in N. alpina. Nothofagus alpina experienced a lower slenderness within larger gaps. This study suggests that rehabilitation of high-graded stands, based on plantations of genus Nothofagus, is an ecologically viable option although control of canopy and understory covers is required.info:eu-repo/semantics/openAccessUniversidad Austral de Chile, Facultad de Ciencias ForestalesBosque (Valdivia) v.34 n.1 20132013-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-92002013000100004en
institution Scielo Chile
collection Scielo Chile
language English
topic degradation
restoration
tree growth
survival
shade tolerance
spellingShingle degradation
restoration
tree growth
survival
shade tolerance
Donoso,Pablo J
Soto,Daniel P
Coopman,Rafael E
Rodríguez-Bertos,Silvia
Early performance of planted Nothofagus dombeyi and Nothofagus alpina in response to light availability and gap size in a high-graded forest in the south-central Andes of Chile
description The Andes of south-central Chile (38 - 41° S) were once dominated by highly productive and valuable forests mainly dominated by Nothofagus dombeyi and N. alpina, but their exploitation led to extensive areas at present covered by high-graded stands. Although these tree species exhibit a light-demanding character and naturally grow in regions with severe winters, they show high mortality when planted in open areas with frequent spring frosts. The effect of light intensity and gap size on survival, size and form of N. dombeyi and N. alpina seedlings, planted in a high-graded stand, was analyzed. Direct and diffuse light (measured through hemispheric photographs) and effective gap area (range from 40 to 734 m²) were estimated in 23 forest gaps, which were divided into small, medium and large for each species (12 gaps for N. dombeyi and 11 gaps for N. alpina). After two growing seasons, mean survival of N. dombeyi was > 95% and not significantly different among gap categories; in N. alpina there was complete survival in medium-sized gaps, which was significantly different from survival in the larger and smaller gaps. Growth of Nothofagus dombeyi significantly increased with gap size and light availability; a phenomenon which did not occur in N. alpina. Nothofagus alpina experienced a lower slenderness within larger gaps. This study suggests that rehabilitation of high-graded stands, based on plantations of genus Nothofagus, is an ecologically viable option although control of canopy and understory covers is required.
author Donoso,Pablo J
Soto,Daniel P
Coopman,Rafael E
Rodríguez-Bertos,Silvia
author_facet Donoso,Pablo J
Soto,Daniel P
Coopman,Rafael E
Rodríguez-Bertos,Silvia
author_sort Donoso,Pablo J
title Early performance of planted Nothofagus dombeyi and Nothofagus alpina in response to light availability and gap size in a high-graded forest in the south-central Andes of Chile
title_short Early performance of planted Nothofagus dombeyi and Nothofagus alpina in response to light availability and gap size in a high-graded forest in the south-central Andes of Chile
title_full Early performance of planted Nothofagus dombeyi and Nothofagus alpina in response to light availability and gap size in a high-graded forest in the south-central Andes of Chile
title_fullStr Early performance of planted Nothofagus dombeyi and Nothofagus alpina in response to light availability and gap size in a high-graded forest in the south-central Andes of Chile
title_full_unstemmed Early performance of planted Nothofagus dombeyi and Nothofagus alpina in response to light availability and gap size in a high-graded forest in the south-central Andes of Chile
title_sort early performance of planted nothofagus dombeyi and nothofagus alpina in response to light availability and gap size in a high-graded forest in the south-central andes of chile
publisher Universidad Austral de Chile, Facultad de Ciencias Forestales
publishDate 2013
url http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-92002013000100004
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