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Publication details

Document type
Journal articles

Document subtype
Full paper

Title
Hydraulic Lift in Cork Oak Trees in a Savannah-Type Mediterranean Ecosystem and its Contribution to the Local Water Balance

Participants in the publication
Cathy Kurz-Besson (Author)
INSTITUTO SUPERIOR DE AGRONOMIA
 UNIVERSIDADE DE LISBOA
 Dennis Otieno (Author)
Raquel Lobo do Vale (Author)
Rolf Siegwolf (Author)
Markus Schmidt (Author)
Alastair Herd (Author)
Carla Nogueira (Author)
Teresa Soares David (Author)
Jorge Soares David (Author)
John Tenhunen (Author)
João Santos Pereira (Author)
Manuela Chaves (Author)

Summary
The aim of this study was to identify the sources and depth of water uptake by 15-years old Quercus suber L. trees in southern Portugal under a Mediterranean climate, measuring δ18O and δD in the soil–plant-atmosphere continuum. Evidence for hydraulic lift was substantiated by the daily fluctuations observed in Ψs at 0.4 and 1 m depth and supported by similar δ18O values found in tree xylem sap, soil water in the rhizosphere and groundwater. From 0.25 m down to a depth of 1 m, δD trends differed according to vegetation type, showing a more depleted value in soil water collected under the evergreen trees (−47‰) than under dead grasses (−35‰). The hypothesis of a fractionation process occurring in the soil due to diffusion of water vapour in the dry soil is proposed to explain the more depleted soil δD signature observed under trees. Hydraulically lifted water was estimated to account for 17–81% of the water used during the following day by tree transpiration at the peak of the drought season, i.e., 0.1–14 L tree−1 day−1. Significant relationships found between xylem sap isotopic composition and leaf water potential in early September emphasized the positive impact of the redistribution of groundwater in the rhizosphere on tree water status.

Date of Publication
2006-04

Where published
Plant and Soil

Publication Identifiers
ISSN - 0032-079X
eISSN - 1573-5036

Publisher
Springer Science and Business Media LLC

Volume
282
Number
1-2

Number of pages
17
Starting page
361
Last page
378

Document Identifiers
DOI - https://doi.org/10.1007/s11104-006-0005-4
URL - http://dx.doi.org/10.1007/s11104-006-0005-4

Rankings
SCIMAGO Q1 (2018) - 1.187 - Soil Science
SCOPUS Q1 (2017) - 1.361 - Plant Science
Web Of Science Q1 (2018) - 3.259 - AGRONOMY - SCIE


Export

APA
Cathy Kurz-Besson, Dennis Otieno, Raquel Lobo do Vale, Rolf Siegwolf, Markus Schmidt, Alastair Herd, Carla Nogueira, Teresa Soares David, Jorge Soares David, John Tenhunen, João Santos Pereira, Manuela Chaves, (2006). Hydraulic Lift in Cork Oak Trees in a Savannah-Type Mediterranean Ecosystem and its Contribution to the Local Water Balance. Plant and Soil, 282, 361-378. ISSN 0032-079X. eISSN 1573-5036. http://dx.doi.org/10.1007/s11104-006-0005-4

IEEE
Cathy Kurz-Besson, Dennis Otieno, Raquel Lobo do Vale, Rolf Siegwolf, Markus Schmidt, Alastair Herd, Carla Nogueira, Teresa Soares David, Jorge Soares David, John Tenhunen, João Santos Pereira, Manuela Chaves, "Hydraulic Lift in Cork Oak Trees in a Savannah-Type Mediterranean Ecosystem and its Contribution to the Local Water Balance" in Plant and Soil, vol. 282, pp. 361-378, 2006. 10.1007/s11104-006-0005-4

BIBTEX
@article{45837, author = {Cathy Kurz-Besson and Dennis Otieno and Raquel Lobo do Vale and Rolf Siegwolf and Markus Schmidt and Alastair Herd and Carla Nogueira and Teresa Soares David and Jorge Soares David and John Tenhunen and João Santos Pereira and Manuela Chaves}, title = {Hydraulic Lift in Cork Oak Trees in a Savannah-Type Mediterranean Ecosystem and its Contribution to the Local Water Balance}, journal = {Plant and Soil}, year = 2006, pages = {361-378}, volume = 282 }