Morpho-physiological acclimation to canopy coverage of Araucaria angustifolia during the establishment in the Atlantic Forest, Argentina

Araucaria angustifolia is an ecologically and commercially important species of the Atlantic Forest. However, its ability to regenerate continuously under the shade of the canopy in the rainforest is uncertain. The aims were: to evaluate the morpho-physiological responses of araucaria to different i...

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Detalles Bibliográficos
Autores principales:	Olguín, Flavia Yesica, Moretti, Ana Paula, Pinazo, Martín, Graciano, Corina
Formato:	Articulo
Lenguaje:	Inglés
Publicado:	2019
Materias:	Ciencias Agrarias Abiotic stress Ecophysiology Paraná pine Rainforest gaps Sun and shade tolerance Estrés abiótico Ecofisiología Pino Paraná Claros Tolerancia al sol y a la sombra
Acceso en línea:	http://sedici.unlp.edu.ar/handle/10915/105289
Aporte de:	SEDICI (UNLP) de Universidad Nacional de La Plata

id	I19-R120-10915-105289
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 Abiotic stress Ecophysiology Paraná pine Rainforest gaps Sun and shade tolerance Estrés abiótico Ecofisiología Pino Paraná Claros Tolerancia al sol y a la sombra
spellingShingle	Ciencias Agrarias Abiotic stress Ecophysiology Paraná pine Rainforest gaps Sun and shade tolerance Estrés abiótico Ecofisiología Pino Paraná Claros Tolerancia al sol y a la sombra Olguín, Flavia Yesica Moretti, Ana Paula Pinazo, Martín Graciano, Corina Morpho-physiological acclimation to canopy coverage of Araucaria angustifolia during the establishment in the Atlantic Forest, Argentina
topic_facet	Ciencias Agrarias Abiotic stress Ecophysiology Paraná pine Rainforest gaps Sun and shade tolerance Estrés abiótico Ecofisiología Pino Paraná Claros Tolerancia al sol y a la sombra
description	Araucaria angustifolia is an ecologically and commercially important species of the Atlantic Forest. However, its ability to regenerate continuously under the shade of the canopy in the rainforest is uncertain. The aims were: to evaluate the morpho-physiological responses of araucaria to different intensities of canopy coverage to know its shade acclimation capacity; and to evaluate survival and growth under different shade intensities in gaps. First, seedlings were grown in pots at full sun or under canopy shade and morpho-physiological traits were measured after 6 and 12 months. Survival was 100 % under full sun and 40 % under shade. One year after planting, the ability to use high-intensity light was similar in plants under both conditions, although shade plants did not grow and showed little capacity to acclimate to shade. Plants under full sun duplicated their size in six months and had higher capacity to deliver water to the leaves. However, shade plants had higher specific hydraulic conductance. After that, in a field experiment, seedlings were planted in six forest-gaps to record survival and growth for 30 months. Survival was high in all positions within the gaps. In the center of the gaps, where incident radiation was higher, growth was higher. We conclude that araucaria has low ability to acclimate to low radiation, nevertheless, it can survive at least 30 months under the canopy. Consequently, araucaria should not be planted below dense canopy shade. The microenvironment in the center of 195-293 m2 gaps is proper for araucaria growth.
format	Articulo Articulo
author	Olguín, Flavia Yesica Moretti, Ana Paula Pinazo, Martín Graciano, Corina
author_facet	Olguín, Flavia Yesica Moretti, Ana Paula Pinazo, Martín Graciano, Corina
author_sort	Olguín, Flavia Yesica
title	Morpho-physiological acclimation to canopy coverage of Araucaria angustifolia during the establishment in the Atlantic Forest, Argentina
title_short	Morpho-physiological acclimation to canopy coverage of Araucaria angustifolia during the establishment in the Atlantic Forest, Argentina
title_full	Morpho-physiological acclimation to canopy coverage of Araucaria angustifolia during the establishment in the Atlantic Forest, Argentina
title_fullStr	Morpho-physiological acclimation to canopy coverage of Araucaria angustifolia during the establishment in the Atlantic Forest, Argentina
title_full_unstemmed	Morpho-physiological acclimation to canopy coverage of Araucaria angustifolia during the establishment in the Atlantic Forest, Argentina
title_sort	morpho-physiological acclimation to canopy coverage of araucaria angustifolia during the establishment in the atlantic forest, argentina
publishDate	2019
url	http://sedici.unlp.edu.ar/handle/10915/105289
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Morpho-physiological acclimation to canopy coverage of Araucaria angustifolia during the establishment in the Atlantic Forest, Argentina

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