Ecohydrology of a riparian woodland along the Oldman River, Alberta

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dc.contributor.authorPhelan, Colleen Amy
dc.contributor.authorUniversity of Lethbridge. Faculty of Arts and Science
dc.contributor.supervisorRood, Stewart B.
dc.date.accessioned2008-03-26T15:54:25Z
dc.date.available2008-03-26T15:54:25Z
dc.date.issued2007
dc.degree.levelMasters
dc.descriptionxiv, 135 leaves : ill. ; 29 cmen
dc.description.abstractGrowth of riparian cottonwoods along regulated rivers can be limited by water availability. In this study we associate seasonal variation of environmental conditions and stream flows with water relations of a natural cottonwood grove located along a regulated river in southern Alberta. To link elements in the river-soil-plant-atmosphere continuum, river and groundwater levels and precipitation were monitored; sap flow was continuously measured with thermal dissipation probes in eight trees and stomatal conductance and leaf water potential were measured monthly; and weather conditions were monitored. From June through August, stomatal conductances at both leaf and canopy levels were increasingly limited by decreasing water availability. Artificially increasing the soil moisture in August resulted in an increase in sap flow and stomatal conductance at leaf and canopy levels. These responses can be attributed to seasonal changes in the water potential difference between soil and leaves or an alteration in hydraulic conductance, or a combination of both.en
dc.identifier.urihttps://hdl.handle.net/10133/625
dc.language.isoen_USen
dc.publisherLethbridge, Alta. : University of Lethbridge, Faculty of Arts and Science, 2007en
dc.publisher.departmentDepartment of Biological Sciencesen
dc.publisher.facultyFaculty of Arts and Scienceen
dc.relation.ispartofseriesThesis (University of Lethbridge. Faculty of Arts and Science)en
dc.subjectCottonwood -- Alberta -- Oldman River Basinen
dc.subjectRiparian ecology -- Alberta -- Oldman River Basinen
dc.subjectEcohydrology -- Alberta -- Oldman River Basinen
dc.subjectDissertations, Academicen
dc.titleEcohydrology of a riparian woodland along the Oldman River, Albertaen
dc.typeThesisen
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