Canopy structure analysis for estimating forest regeneration dynamics and growth in Nothofagus pumilio forests

Introduction: Silviculture systems applied in Nothofagus pumilio forests are based on opening the canopy to stimulate natural regeneration by modifying light and soil moisture. The objective is to evaluate regeneration dynamics of N. pumilio along different fore...

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Autores principales:	Martínez Pastur, Guillermo José, Peri, Pablo Luis, Cellini, Juan Manuel, Lencinas, María Vanessa, Barrera, Marcelo Daniel, Ivancich, Horacio Simón
Formato:	Articulo
Lenguaje:	Inglés
Publicado:	2011
Materias:	Ciencias Agrarias Silviculture Regeneration dynamics Light availability Soil moisture Hemispherical photographs
Acceso en línea:	http://sedici.unlp.edu.ar/handle/10915/127296
Aporte de:	SEDICI (UNLP) de Universidad Nacional de La Plata

id	I19-R120-10915-127296
record_format	dspace
institution	Universidad Nacional de La Plata
institution_str	I-19
repository_str	R-120
collection	SEDICI (UNLP)
language	Inglés
topic	Ciencias Agrarias Silviculture Regeneration dynamics Light availability Soil moisture Hemispherical photographs
spellingShingle	Ciencias Agrarias Silviculture Regeneration dynamics Light availability Soil moisture Hemispherical photographs Martínez Pastur, Guillermo José Peri, Pablo Luis Cellini, Juan Manuel Lencinas, María Vanessa Barrera, Marcelo Daniel Ivancich, Horacio Simón Canopy structure analysis for estimating forest regeneration dynamics and growth in <i>Nothofagus pumilio</i> forests
topic_facet	Ciencias Agrarias Silviculture Regeneration dynamics Light availability Soil moisture Hemispherical photographs
description	Introduction: Silviculture systems applied in <i>Nothofagus pumilio</i> forests are based on opening the canopy to stimulate natural regeneration by modifying light and soil moisture. The objective is to evaluate regeneration dynamics of <i>N. pumilio</i> along different forest canopy and solar radiation gradients. Materials and methods: Regeneration data and seed production were obtained in 98 permanent plots established in old-growth and harvested stands along a crown cover gradient (19–93%). Volumetric soil water content and basal area were also measured, while crown cover and solar radiation transmission were estimated using hemispherical photographs. Sapling height was modeled using plant age, crown cover, and solar radiation transmission of the stands as explanatory variables. Results: Natural regeneration dynamics were closely related to crown cover values, which determined seed production and the successful establishment and subsequent regeneration growth. Height growth was found to be related to crown cover and solar radiation transmission, where <i>N. pumilio</i> regeneration is optimized at intermediate crown cover levels (45% crown cover, 0.5 effective leaf area index, 26 W m² global radiation, and 65% percentage of global radiation). Conclusion: These findings can be used to develop new silvicultural methods or to adjust the current practices to ensure regeneration establishment and maximize height growth at the stand level.
format	Articulo Articulo
author	Martínez Pastur, Guillermo José Peri, Pablo Luis Cellini, Juan Manuel Lencinas, María Vanessa Barrera, Marcelo Daniel Ivancich, Horacio Simón
author_facet	Martínez Pastur, Guillermo José Peri, Pablo Luis Cellini, Juan Manuel Lencinas, María Vanessa Barrera, Marcelo Daniel Ivancich, Horacio Simón
author_sort	Martínez Pastur, Guillermo José
title	Canopy structure analysis for estimating forest regeneration dynamics and growth in <i>Nothofagus pumilio</i> forests
title_short	Canopy structure analysis for estimating forest regeneration dynamics and growth in <i>Nothofagus pumilio</i> forests
title_full	Canopy structure analysis for estimating forest regeneration dynamics and growth in <i>Nothofagus pumilio</i> forests
title_fullStr	Canopy structure analysis for estimating forest regeneration dynamics and growth in <i>Nothofagus pumilio</i> forests
title_full_unstemmed	Canopy structure analysis for estimating forest regeneration dynamics and growth in <i>Nothofagus pumilio</i> forests
title_sort	canopy structure analysis for estimating forest regeneration dynamics and growth in <i>nothofagus pumilio</i> forests
publishDate	2011
url	http://sedici.unlp.edu.ar/handle/10915/127296
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bdutipo_str	Repositorios
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Canopy structure analysis for estimating forest regeneration dynamics and growth in <i>Nothofagus pumilio</i> forests

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