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Relative contribution of groundwater to plant transpiration estimated with stable isotopes

hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
hal.structure.identifierGlobal Ecology Unit CREAF-CSIC-UAB
hal.structure.identifierCentre de Recerca Ecològica i Aplicacions Forestals [CREAF]
dc.contributor.authorBARBETA MARGARIT, Adrià
hal.structure.identifierGlobal Ecology Unit CREAF-CSIC-UAB
hal.structure.identifierCentre de Recerca Ecològica i Aplicacions Forestals [CREAF]
dc.contributor.authorPEÑUELAS, Josep
dc.date.accessioned2024-04-08T12:04:41Z
dc.date.available2024-04-08T12:04:41Z
dc.date.issued2017
dc.identifier.issn2045-2322
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/196318
dc.description.abstractEnWater stored underground in the saturated and subsurface zones below the soil are important sources of water for plants in water-limited ecosystems. The presence of deep-rooted plants worldwide, however, suggests that the use of groundwater is not restricted to arid and seasonally dry ecosystems. We compiled the available data (71 species) on the relative contribution of groundwater to plant water estimated using stable isotopes and mixing models, which provided information about relative groundwater use, and analyzed their variation across different climates, seasons, plant types, edaphic conditions, and landscape positions. Plant use of groundwater was more likely at sites with a pronounced dry season, and represented on average 49 per cent of transpired water in dry seasons and 28 per cent in wet seasons. The relative contribution of groundwater to plant-water uptake was higher on rocky substrates (saprolite, fractured bedrock), which had reduced groundwater uptake when this source was deep belowground. In addition, we found that the connectivity between groundwater pools and plant water may be quantitatively larger and more widespread than reported by recent global estimations based on isotopic averaged values. Earth System Models should account for the feedbacks between transpiration and groundwater recharge.
dc.language.isoen
dc.publisherNature Publishing Group
dc.rights.urihttp://creativecommons.org/licenses/by/
dc.subjecteau souterraine
dc.subjectécosystème
dc.subjectstockage d'eau
dc.subjecttransfert sol racine
dc.subjectisotope stable
dc.subject.engroundwater
dc.subject.enecosystem
dc.subject.enstable isotopes
dc.title.enRelative contribution of groundwater to plant transpiration estimated with stable isotopes
dc.typeArticle de revue
dc.identifier.doi10.1038/s41598-017-09643-x
dc.subject.halSciences du Vivant [q-bio]
bordeaux.journalScientific Reports
bordeaux.page1-10
bordeaux.volume7
bordeaux.hal.laboratoriesInteractions Soil Plant Atmosphere (ISPA) - UMR 1391*
bordeaux.issue1
bordeaux.institutionBordeaux Sciences Agro
bordeaux.institutionINRAE
bordeaux.peerReviewedoui
hal.identifierhal-01608269
hal.version1
hal.popularnon
hal.audienceNon spécifiée
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01608269v1
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