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dc.contributor.supervisor Flanagan, Lawrence Wever, Linda A. University of Lethbridge. Faculty of Arts and Science 2007-04-25T14:41:17Z 2007-04-25T14:41:17Z 2001
dc.description x, 70 leaves : ill. ; 28 cm. en
dc.description.abstract Fluxes of sensible and latent heat were measured over a grassland during 1998 and 1999 using the eddy covariance technique. The study objectives were to document seasonal and interannual variation evapotranspiration. Bowen ratios were lower in 1998 (0.5-3.0) than in 1999 (2.5-8.5) due to lower evapotranspiration rates (E). Maximum E also occurred later in 1998 than in 1999; Day 188 (10.4 mmol m-2s-1) versus Day 152 (5.6 mmol m-2s-1). Daily evapotranspiration rates were positively correlated with net radiation, canopy conductance, plant nitrogen content, leaf area index and soil moisture. Based on calculations of the decoupling coefficient (O). evapotranspiration was more constrained by canopy conductance in 1999 (O<0.2) than in 1998 (O>0.3). Evapotranspiration and energy partitioning in this grassland were sensitive to seasonal changes in soil moisture and interannaual variation in spring precipitation. Annual evapotranspiration was 300 mm. en
dc.language.iso en_US en
dc.publisher Lethbridge, Alta. : University of Lethbridge, Faculty of Arts and Science, 2001 en
dc.relation.ispartofseries Thesis (University of Lethbridge. Faculty of Arts and Science) en
dc.subject Evapotranspiration -- Alberta en
dc.subject Water balance (Hydrology) en
dc.subject Grasslands -- Alberta en
dc.subject Dissertations, Academic en
dc.title Seasonal and interannual variation in water vapor fluxes and energy balance in a moist mixed grassland en
dc.type Thesis en
dc.publisher.faculty Arts and Science
dc.publisher.department Department of Biological Sciences Masters

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