Please use this identifier to cite or link to this item: https://hdl.handle.net/1959.11/13113
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dc.contributor.authorWhitley, Rhysen
dc.contributor.authorTaylor, Danielen
dc.contributor.authorMacinnis-Ng, Catrionaen
dc.contributor.authorZeppel, Melanieen
dc.contributor.authorYunusa, Isaen
dc.contributor.authorO'Grady, Anthonyen
dc.contributor.authorFroend, Rayen
dc.contributor.authorMedlyn, Belindaen
dc.contributor.authorEamus, Dereken
dc.date.accessioned2013-07-24T16:41:00Z-
dc.date.issued2013-
dc.identifier.citationHydrological Processes, 27(8), p. 1133-1146en
dc.identifier.issn1099-1085en
dc.identifier.issn0885-6087en
dc.identifier.urihttps://hdl.handle.net/1959.11/13113-
dc.description.abstractA modified Jarvis-Stewart model of canopy transpiration (Ec) was tested over five ecosystems differing in climate, soil type and species composition. The aims of this study were to investigate the model's applicability over multiple ecosystems; to determine whether the number of model parameters could be reduced by assuming that site-specific responses of Ec to solar radiation, vapour pressure deficit and soil moisture content vary little between sites; and to examine convergence of behaviour of canopy water-use across multiple sites. This was accomplished by the following: (i) calibrating the model for each site to determine a set of site-specific (SS) parameters, and (ii) calibrating the model for all sites simultaneously to determine a set of combined sites (CS) parameters. The performance of both models was compared with measured Ec data and a statistical benchmark using an artificial neural network (ANN). Both the CS and SS models performed well, explaining hourly and daily variation in Ec. The SS model produced slightly better model statistics [R²= 0.75-0.91; model efficiency (ME)= 0.53-0.81; root mean square error (RMSE) = 0.0015-0.0280 mm h⁻¹] than the CS model (R² = 0.68-0.87; ME = 0.45-0.72; RMSE = 0.0023-0.0164 mm h⁻¹). Both were highly comparable with the ANN (R² = 0.77-0.90; ME = 0.58-0.80; RMSE =0.0007-0.0122 mm h⁻¹). These results indicate that the response of canopy water-use to abiotic drivers displayed significant convergence across sites, but the absolute magnitude of Ec was site specific. Period totals estimated with the modified Jarvis-Stewart model provided close approximations of observed totals, demonstrating the effectiveness of this model as a tool aiding water resource management. Analysis of the measured diel patterns of water use revealed significant nocturnal transpiration (9-18% of total water use by the canopy), but no Jarvis-Stewart formulations are able to capture this because of the dependence of water-use on solar radiation, which is zero at night.en
dc.languageenen
dc.publisherJohn Wiley & Sons Ltden
dc.relation.ispartofHydrological Processesen
dc.titleDeveloping an empirical model of canopy water flux describing the common response of transpiration to solar radiation and VPD across five contrasting woodlands and forestsen
dc.typeJournal Articleen
dc.identifier.doi10.1002/hyp.9280en
dc.subject.keywordsEnvironmental Monitoringen
dc.subject.keywordsEnvironmental Rehabilitation (excl Bioremediation)en
dc.subject.keywordsLand Capability and Soil Degradationen
local.contributor.firstnameRhysen
local.contributor.firstnameDanielen
local.contributor.firstnameCatrionaen
local.contributor.firstnameMelanieen
local.contributor.firstnameIsaen
local.contributor.firstnameAnthonyen
local.contributor.firstnameRayen
local.contributor.firstnameBelindaen
local.contributor.firstnameDereken
local.subject.for2008050207 Environmental Rehabilitation (excl Bioremediation)en
local.subject.for2008050206 Environmental Monitoringen
local.subject.for2008050302 Land Capability and Soil Degradationen
local.subject.seo2008830301 Beef Cattleen
local.subject.seo2008961205 Rehabilitation of Degraded Mining Environmentsen
local.subject.seo2008830499 Pasture, Browse and Fodder Crops not elsewhere classifieden
local.profile.schoolSchool of Environmental and Rural Scienceen
local.profile.emailiyunusa@une.edu.auen
local.output.categoryC1en
local.record.placeauen
local.record.institutionUniversity of New Englanden
local.identifier.epublicationsrecordune-20130415-120317en
local.publisher.placeUnited Kingdomen
local.format.startpage1133en
local.format.endpage1146en
local.peerreviewedYesen
local.identifier.volume27en
local.identifier.issue8en
local.contributor.lastnameWhitleyen
local.contributor.lastnameTayloren
local.contributor.lastnameMacinnis-Ngen
local.contributor.lastnameZeppelen
local.contributor.lastnameYunusaen
local.contributor.lastnameO'Gradyen
local.contributor.lastnameFroenden
local.contributor.lastnameMedlynen
local.contributor.lastnameEamusen
dc.identifier.staffune-id:iyunusaen
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.identifier.unepublicationidune:13324en
dc.identifier.academiclevelAcademicen
local.title.maintitleDeveloping an empirical model of canopy water flux describing the common response of transpiration to solar radiation and VPD across five contrasting woodlands and forestsen
local.output.categorydescriptionC1 Refereed Article in a Scholarly Journalen
local.search.authorWhitley, Rhysen
local.search.authorTaylor, Danielen
local.search.authorMacinnis-Ng, Catrionaen
local.search.authorZeppel, Melanieen
local.search.authorYunusa, Isaen
local.search.authorO'Grady, Anthonyen
local.search.authorFroend, Rayen
local.search.authorMedlyn, Belindaen
local.search.authorEamus, Dereken
local.uneassociationUnknownen
local.identifier.wosid000316967900002en
local.year.published2013en
local.subject.for2020410405 Environmental rehabilitation and restorationen
local.subject.for2020410599 Pollution and contamination not elsewhere classifieden
local.subject.for2020410601 Land capability and soil productivityen
local.subject.seo2020100401 Beef cattleen
local.subject.seo2020180604 Rehabilitation or conservation of terrestrial environmentsen
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