EXPLORING small letter delta18O IN THE WATERS WITHIN A TEMPERATE FOREST ECOSYSTEM AND THE EVALUATION OF THE PECLET EFFECT IN A STEADY STATE LEAF WATER MODEL

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EXPLORING small letter delta18O IN THE WATERS WITHIN A TEMPERATE FOREST ECOSYSTEM AND THE EVALUATION OF THE PECLET EFFECT IN A STEADY STATE LEAF WATER MODEL

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dc.contributor.advisor Warland, Jon
dc.contributor.author Halliday, Mark
dc.date 2011-12-16
dc.date.accessioned 2011-12-23T17:32:15Z
dc.date.available 2011-12-23T17:32:15Z
dc.date.issued 2011-12-23
dc.identifier.uri http://hdl.handle.net/10214/3217
dc.description.abstract This thesis attempted to determine whether precipitation at CFB Borden, Ontario Canada is derived from recycled or marine source water using δ18O and to explore the enrichment of leaf water in three temperate forest trees. The d-excess values and rainfall intensity were used as indicators of recycled water and were found to suggest that precipitation at Borden is not derived from recycled water. The leaves of ash, aspen and maple showed significant enrichment in δ18O over xylem water. Maple leaves were significantly more enriched over the leaves of ash and aspen (p-value = 0.0019), despite source water not being significantly different (p-value = 0.1782). Modelling leaf water demonstrated the need for the inclusion of the Peclet effect in the steady state model for ash and aspen leaves, however for maple, the Peclet effect is insignificant. The non-steady state model used measured values of δET, which were uncertain and lead to poor model predictions. en_US
dc.description.sponsorship NSERC Strategic Project #351040 en_US
dc.language.iso en en_US
dc.subject Stable Isotope en_US
dc.subject Leaf water enrichment en_US
dc.subject Peclet effect en_US
dc.subject Temperate Forest en_US
dc.title EXPLORING small letter delta18O IN THE WATERS WITHIN A TEMPERATE FOREST ECOSYSTEM AND THE EVALUATION OF THE PECLET EFFECT IN A STEADY STATE LEAF WATER MODEL en_US
dc.type Thesis en_US
dc.degree.programme Land Resource Science en_US
dc.degree.name Master of Science en_US
dc.degree.department Department of Land Resource Science en_US


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