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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| Format: | Article |
| Language: | English |
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Vicerractoría Investigación
2006-03-01
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| Series: | Revista de Biología Tropical |
| Subjects: | |
| Online Access: | http://www.scielo.sa.cr/scielo.php?script=sci_arttext&pid=S0034-77442006000100009 |
| _version_ | 1797726719482789888 |
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| author | Marco V Gutiérrez Louis S Santiago |
| author_facet | Marco V Gutiérrez Louis S Santiago |
| author_sort | Marco V Gutiérrez |
| collection | DOAJ |
| 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. Rev. Biol. Trop. 54(1): 73-81. Epub 2006 Mar 31. |
| first_indexed | 2024-03-12T10:49:27Z |
| format | Article |
| id | doaj.art-57b84cfb646145bd9b49347c78cf2620 |
| institution | Directory Open Access Journal |
| issn | 0034-7744 2215-2075 |
| language | English |
| last_indexed | 2024-03-12T10:49:27Z |
| publishDate | 2006-03-01 |
| publisher | Vicerractoría Investigación |
| record_format | Article |
| series | Revista de Biología Tropical |
| spelling | doaj.art-57b84cfb646145bd9b49347c78cf26202023-09-02T07:08:30ZengVicerractoría InvestigaciónRevista de Biología Tropical0034-77442215-20752006-03-015417381A Comparison of Sap Flow Measurements and Potometry in Two Tropical Lowland Tree Species with Contrasting Wood PropertiesMarco V GutiérrezLouis S SantiagoWe 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. Rev. Biol. Trop. 54(1): 73-81. Epub 2006 Mar 31.http://www.scielo.sa.cr/scielo.php?script=sci_arttext&pid=S0034-77442006000100009heat dissipation techniquenocturnal uptakepotometertropical treessap flowstomatal conductancewood density |
| spellingShingle | Marco V Gutiérrez Louis S Santiago A Comparison of Sap Flow Measurements and Potometry in Two Tropical Lowland Tree Species with Contrasting Wood Properties Revista de Biología Tropical heat dissipation technique nocturnal uptake potometer tropical trees sap flow stomatal conductance wood density |
| title | 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_short | 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 |
| topic | heat dissipation technique nocturnal uptake potometer tropical trees sap flow stomatal conductance wood density |
| url | http://www.scielo.sa.cr/scielo.php?script=sci_arttext&pid=S0034-77442006000100009 |
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