A Comparison of Sap Flow Measurements and Potometry in Two Tropical Lowland Tree Species with Contrasting Wood Properties

We evaluated the performance of the Heat Dissipation Technique (HDT) to measure sap flow in whole trees by comparison with potometric water uptake. Two tropical lowland species, Ochroma lagopus (balsa), a pioneer species with light wood and Hyeronima alchorneoides (pilón), a late-successional specie...

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Autores principales:	Gutiérrez, Marco V., Santiago, Louis S.
Formato:	Online
Idioma:	spa
Publicado:	Universidad de Costa Rica 2006
Acceso en línea:	https://revistas.ucr.ac.cr/index.php/rbt/article/view/14000

id	RBT14000
record_format	ojs
spelling	RBT140002022-05-30T18:40:14Z A Comparison of Sap Flow Measurements and Potometry in Two Tropical Lowland Tree Species with Contrasting Wood Properties A Comparison of Sap Flow Measurements and Potometry in Two Tropical Lowland Tree Species with Contrasting Wood Properties Gutiérrez, Marco V. Santiago, Louis S. heat dissipation technique nocturnal uptake potometer tropical trees sap flow stomatal conductance wood density We evaluated the performance of the Heat Dissipation Technique (HDT) to measure sap flow in whole trees by comparison with potometric water uptake. Two tropical lowland species, Ochroma lagopus(balsa), a pioneer species with light wood and Hyeronima alchorneoides (pilón), a late-successional species with hard wood were examined. Diurnal courses of sap flow measured with the HDT showed good agreement with potometry. At the low sap flow rates (below 1 Kg h-1) occurring during nocturnal recharge HDT consistently underestimated sap flow rates. This resulted in the failure of the current version of the HDT to measure nocturnal water uptake, an important component of the water budget of at least one of the two species examined. We evaluated the performance of the Heat Dissipation Technique (HDT) to measure sap flow in whole trees by comparison with potometric water uptake. Two tropical lowland species, Ochroma lagopus (balsa), a pioneer species with light wood and Hyeronima alchorneoides (pilón), a late-successional species with hard wood were examined. Diurnal courses of sap flow measured with the HDT showed good agreement with potometry. At the low sap flow rates (below 1 Kg h-1) occurring during nocturnal recharge HDT consistently underestimated sap flow rates. This resulted in the failure of the current version of the HDT to measure nocturnal water uptake, an important component of the water budget of at least one of the two species examined. Universidad de Costa Rica 2006-03-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Article application/pdf https://revistas.ucr.ac.cr/index.php/rbt/article/view/14000 10.15517/rbt.v54i1.14000 Revista de Biología Tropical; Vol. 54 No. 1 (2006): Volume 54 - Regular number 1 - March 2006; 73–81 Revista de Biología Tropical; Vol. 54 Núm. 1 (2006): Volumen 54 - Número regular 1 - Marzo 2006; 73–81 Revista Biología Tropical; Vol. 54 N.º 1 (2006): Volume 54 - Regular number 1 - March 2006; 73–81 2215-2075 0034-7744 10.15517/rbt.v54i1 spa https://revistas.ucr.ac.cr/index.php/rbt/article/view/14000/13312 Copyright (c) 2006 Revista de Biología Tropical http://creativecommons.org/licenses/by/4.0
institution	Universidad de Costa Rica
collection	Revista de Biología Tropical
language	spa
format	Online
author	Gutiérrez, Marco V. Santiago, Louis S.
spellingShingle	Gutiérrez, Marco V. Santiago, Louis S. A Comparison of Sap Flow Measurements and Potometry in Two Tropical Lowland Tree Species with Contrasting Wood Properties
author_facet	Gutiérrez, Marco V. Santiago, Louis S.
author_sort	Gutiérrez, Marco V.
description	We evaluated the performance of the Heat Dissipation Technique (HDT) to measure sap flow in whole trees by comparison with potometric water uptake. Two tropical lowland species, Ochroma lagopus (balsa), a pioneer species with light wood and Hyeronima alchorneoides (pilón), a late-successional species with hard wood were examined. Diurnal courses of sap flow measured with the HDT showed good agreement with potometry. At the low sap flow rates (below 1 Kg h-1) occurring during nocturnal recharge HDT consistently underestimated sap flow rates. This resulted in the failure of the current version of the HDT to measure nocturnal water uptake, an important component of the water budget of at least one of the two species examined.
title	A Comparison of Sap Flow Measurements and Potometry in Two Tropical Lowland Tree Species with Contrasting Wood Properties
title_short	A Comparison of Sap Flow Measurements and Potometry in Two Tropical Lowland Tree Species with Contrasting Wood Properties
title_full	A Comparison of Sap Flow Measurements and Potometry in Two Tropical Lowland Tree Species with Contrasting Wood Properties
title_fullStr	A Comparison of Sap Flow Measurements and Potometry in Two Tropical Lowland Tree Species with Contrasting Wood Properties
title_full_unstemmed	A Comparison of Sap Flow Measurements and Potometry in Two Tropical Lowland Tree Species with Contrasting Wood Properties
title_sort	comparison of sap flow measurements and potometry in two tropical lowland tree species with contrasting wood properties
title_alt	A Comparison of Sap Flow Measurements and Potometry in Two Tropical Lowland Tree Species with Contrasting Wood Properties
publisher	Universidad de Costa Rica
publishDate	2006
url	https://revistas.ucr.ac.cr/index.php/rbt/article/view/14000
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A Comparison of Sap Flow Measurements and Potometry in Two Tropical Lowland Tree Species with Contrasting Wood Properties

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