Diameter growth: Can live trees decrease?

Autores
Martínez Pastur, Guillermo; Lencinas, María Vanessa; Cellini, Juan Manuel; Mundo, Ignacio Alberto
Año de publicación
2007
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Growth refers to an increase in dimensions with time and is implicit in the expected continual increase in tree dimensions. Tree diameters, however, could decrease during the growing season due to water depletion. Annual negative growth measurements are usually attributed to human error and not to other physiological or physical processes. Although seasonal and diurnal fluctuations of diameter have been well documented, perennial decrement of diameter has not been the focus of physiological research. The aim of this work was to analyse the potential causes of decrease in annual diameter growth related to tree mortality due to self-thinning in Nothofagus pumilio forests and to quantify the variations in water depletion of the tree trunks. Some trees did present negative annual diameter increments associated with a water content decrease in the trunks (77 per cent in live trees compared with 56 per cent in recently dead individuals), which produced a contraction (more than 8 per cent of the initial diameter) in the wood and the bark. Trees could survive during 2-5 growth seasons with continual decreases in their diameters (14 per cent, standard error 5 per cent of the trees in the studied stand) until the water content reached a limit where mortality resulted. Therefore, the occurrence of data showing a diameter decrease in successive forest inventories may be due to physiological and physical processes in the natural dynamics of the stand, and not exclusively be explained away as the results of human measurement errors.
Facultad de Ciencias Agrarias y Forestales
Consejo Nacional de Investigaciones Científicas y Técnicas
Materia
Ciencias Agrarias
Trees
Diameter
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/82982

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spelling Diameter growth: Can live trees decrease?Martínez Pastur, GuillermoLencinas, María VanessaCellini, Juan ManuelMundo, Ignacio AlbertoCiencias AgrariasTreesDiameterGrowth refers to an increase in dimensions with time and is implicit in the expected continual increase in tree dimensions. Tree diameters, however, could decrease during the growing season due to water depletion. Annual negative growth measurements are usually attributed to human error and not to other physiological or physical processes. Although seasonal and diurnal fluctuations of diameter have been well documented, perennial decrement of diameter has not been the focus of physiological research. The aim of this work was to analyse the potential causes of decrease in annual diameter growth related to tree mortality due to self-thinning in Nothofagus pumilio forests and to quantify the variations in water depletion of the tree trunks. Some trees did present negative annual diameter increments associated with a water content decrease in the trunks (77 per cent in live trees compared with 56 per cent in recently dead individuals), which produced a contraction (more than 8 per cent of the initial diameter) in the wood and the bark. Trees could survive during 2-5 growth seasons with continual decreases in their diameters (14 per cent, standard error 5 per cent of the trees in the studied stand) until the water content reached a limit where mortality resulted. Therefore, the occurrence of data showing a diameter decrease in successive forest inventories may be due to physiological and physical processes in the natural dynamics of the stand, and not exclusively be explained away as the results of human measurement errors.Facultad de Ciencias Agrarias y ForestalesConsejo Nacional de Investigaciones Científicas y Técnicas2007info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf83-88http://sedici.unlp.edu.ar/handle/10915/82982enginfo:eu-repo/semantics/altIdentifier/issn/0015-752Xinfo:eu-repo/semantics/altIdentifier/doi/10.1093/forestry/cpl047info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:15:45Zoai:sedici.unlp.edu.ar:10915/82982Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:15:45.946SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Diameter growth: Can live trees decrease?
title Diameter growth: Can live trees decrease?
spellingShingle Diameter growth: Can live trees decrease?
Martínez Pastur, Guillermo
Ciencias Agrarias
Trees
Diameter
title_short Diameter growth: Can live trees decrease?
title_full Diameter growth: Can live trees decrease?
title_fullStr Diameter growth: Can live trees decrease?
title_full_unstemmed Diameter growth: Can live trees decrease?
title_sort Diameter growth: Can live trees decrease?
dc.creator.none.fl_str_mv Martínez Pastur, Guillermo
Lencinas, María Vanessa
Cellini, Juan Manuel
Mundo, Ignacio Alberto
author Martínez Pastur, Guillermo
author_facet Martínez Pastur, Guillermo
Lencinas, María Vanessa
Cellini, Juan Manuel
Mundo, Ignacio Alberto
author_role author
author2 Lencinas, María Vanessa
Cellini, Juan Manuel
Mundo, Ignacio Alberto
author2_role author
author
author
dc.subject.none.fl_str_mv Ciencias Agrarias
Trees
Diameter
topic Ciencias Agrarias
Trees
Diameter
dc.description.none.fl_txt_mv Growth refers to an increase in dimensions with time and is implicit in the expected continual increase in tree dimensions. Tree diameters, however, could decrease during the growing season due to water depletion. Annual negative growth measurements are usually attributed to human error and not to other physiological or physical processes. Although seasonal and diurnal fluctuations of diameter have been well documented, perennial decrement of diameter has not been the focus of physiological research. The aim of this work was to analyse the potential causes of decrease in annual diameter growth related to tree mortality due to self-thinning in Nothofagus pumilio forests and to quantify the variations in water depletion of the tree trunks. Some trees did present negative annual diameter increments associated with a water content decrease in the trunks (77 per cent in live trees compared with 56 per cent in recently dead individuals), which produced a contraction (more than 8 per cent of the initial diameter) in the wood and the bark. Trees could survive during 2-5 growth seasons with continual decreases in their diameters (14 per cent, standard error 5 per cent of the trees in the studied stand) until the water content reached a limit where mortality resulted. Therefore, the occurrence of data showing a diameter decrease in successive forest inventories may be due to physiological and physical processes in the natural dynamics of the stand, and not exclusively be explained away as the results of human measurement errors.
Facultad de Ciencias Agrarias y Forestales
Consejo Nacional de Investigaciones Científicas y Técnicas
description Growth refers to an increase in dimensions with time and is implicit in the expected continual increase in tree dimensions. Tree diameters, however, could decrease during the growing season due to water depletion. Annual negative growth measurements are usually attributed to human error and not to other physiological or physical processes. Although seasonal and diurnal fluctuations of diameter have been well documented, perennial decrement of diameter has not been the focus of physiological research. The aim of this work was to analyse the potential causes of decrease in annual diameter growth related to tree mortality due to self-thinning in Nothofagus pumilio forests and to quantify the variations in water depletion of the tree trunks. Some trees did present negative annual diameter increments associated with a water content decrease in the trunks (77 per cent in live trees compared with 56 per cent in recently dead individuals), which produced a contraction (more than 8 per cent of the initial diameter) in the wood and the bark. Trees could survive during 2-5 growth seasons with continual decreases in their diameters (14 per cent, standard error 5 per cent of the trees in the studied stand) until the water content reached a limit where mortality resulted. Therefore, the occurrence of data showing a diameter decrease in successive forest inventories may be due to physiological and physical processes in the natural dynamics of the stand, and not exclusively be explained away as the results of human measurement errors.
publishDate 2007
dc.date.none.fl_str_mv 2007
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info:eu-repo/semantics/publishedVersion
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language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/0015-752X
info:eu-repo/semantics/altIdentifier/doi/10.1093/forestry/cpl047
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http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
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