Wood Density and Ring Width in <i>Quercus rotundifolia</i> Trees in Southern Portugal

<i>Quercus rotundifolia</i> Lam., known as holm oak or evergreen oak, occurs naturally in the western Mediterranean region, mainly as part of the agroforestry or agrosilvopastoral systems in Portugal (“montado”) and Spain (“dehesa”), and is economically important for acorn production. Le...

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Autores principales:	Vicelina Sousa, Maria Emília Silva, José Luís Louzada, Helena Pereira
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	holm oak Mediterranean oaks wood density ring width variability microdensitometry Plant ecology QK900-989
Acceso en línea:	https://doaj.org/article/a5aa3c898ddf4ab2aa697d0c97937b00
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id	oai:doaj.org-article:a5aa3c898ddf4ab2aa697d0c97937b00
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spelling	oai:doaj.org-article:a5aa3c898ddf4ab2aa697d0c97937b002021-11-25T17:37:57ZWood Density and Ring Width in <i>Quercus rotundifolia</i> Trees in Southern Portugal10.3390/f121114991999-4907https://doaj.org/article/a5aa3c898ddf4ab2aa697d0c97937b002021-10-01T00:00:00Zhttps://www.mdpi.com/1999-4907/12/11/1499https://doaj.org/toc/1999-4907<i>Quercus rotundifolia</i> Lam., known as holm oak or evergreen oak, occurs naturally in the western Mediterranean region, mainly as part of the agroforestry or agrosilvopastoral systems in Portugal (“montado”) and Spain (“dehesa”), and is economically important for acorn production. Less attention has been given to <i>Q. rotundifolia</i> wood, and its density variability is not known, namely related to tree growth. The wood density of 20 <i>Q. rotundifolia</i> trees was measured along the radial direction by X-ray densitometry and the factors responsible for ring width and wood density variation within and between trees were investigated at two sites located within the main species region in southern Portugal. Ring width was significantly different between sites, with an average of 1.81 mm and 1.55 mm. Wood density was very high and averaged between 888 kg/m<sup>3</sup> and 914 kg/m<sup>3</sup> but not significantly different between sites. Ring width and wood density showed a positive and significant correlation at both sites. Cambial age was the main source of variation for ring width and wood density, while between-tree effects accounted for a considerable proportion of wood density variation. The results are an important contribution for the species valorisation aiming at high-value wood products, also adding knowledge on the species growth of interest for tree selection and sustainable management.Vicelina SousaMaria Emília SilvaJosé Luís LouzadaHelena PereiraMDPI AGarticleholm oakMediterranean oakswood densityring widthvariabilitymicrodensitometryPlant ecologyQK900-989ENForests, Vol 12, Iss 1499, p 1499 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	holm oak Mediterranean oaks wood density ring width variability microdensitometry Plant ecology QK900-989
spellingShingle	holm oak Mediterranean oaks wood density ring width variability microdensitometry Plant ecology QK900-989 Vicelina Sousa Maria Emília Silva José Luís Louzada Helena Pereira Wood Density and Ring Width in <i>Quercus rotundifolia</i> Trees in Southern Portugal
description	<i>Quercus rotundifolia</i> Lam., known as holm oak or evergreen oak, occurs naturally in the western Mediterranean region, mainly as part of the agroforestry or agrosilvopastoral systems in Portugal (“montado”) and Spain (“dehesa”), and is economically important for acorn production. Less attention has been given to <i>Q. rotundifolia</i> wood, and its density variability is not known, namely related to tree growth. The wood density of 20 <i>Q. rotundifolia</i> trees was measured along the radial direction by X-ray densitometry and the factors responsible for ring width and wood density variation within and between trees were investigated at two sites located within the main species region in southern Portugal. Ring width was significantly different between sites, with an average of 1.81 mm and 1.55 mm. Wood density was very high and averaged between 888 kg/m<sup>3</sup> and 914 kg/m<sup>3</sup> but not significantly different between sites. Ring width and wood density showed a positive and significant correlation at both sites. Cambial age was the main source of variation for ring width and wood density, while between-tree effects accounted for a considerable proportion of wood density variation. The results are an important contribution for the species valorisation aiming at high-value wood products, also adding knowledge on the species growth of interest for tree selection and sustainable management.
format	article
author	Vicelina Sousa Maria Emília Silva José Luís Louzada Helena Pereira
author_facet	Vicelina Sousa Maria Emília Silva José Luís Louzada Helena Pereira
author_sort	Vicelina Sousa
title	Wood Density and Ring Width in <i>Quercus rotundifolia</i> Trees in Southern Portugal
title_short	Wood Density and Ring Width in <i>Quercus rotundifolia</i> Trees in Southern Portugal
title_full	Wood Density and Ring Width in <i>Quercus rotundifolia</i> Trees in Southern Portugal
title_fullStr	Wood Density and Ring Width in <i>Quercus rotundifolia</i> Trees in Southern Portugal
title_full_unstemmed	Wood Density and Ring Width in <i>Quercus rotundifolia</i> Trees in Southern Portugal
title_sort	wood density and ring width in <i>quercus rotundifolia</i> trees in southern portugal
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/a5aa3c898ddf4ab2aa697d0c97937b00
work_keys_str_mv	AT vicelinasousa wooddensityandringwidthiniquercusrotundifoliaitreesinsouthernportugal AT mariaemiliasilva wooddensityandringwidthiniquercusrotundifoliaitreesinsouthernportugal AT joseluislouzada wooddensityandringwidthiniquercusrotundifoliaitreesinsouthernportugal AT helenapereira wooddensityandringwidthiniquercusrotundifoliaitreesinsouthernportugal
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Wood Density and Ring Width in <i>Quercus rotundifolia</i> Trees in Southern Portugal

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