Photosynthetic CO2 exchange and spectral vegetation indices of boreal mosses

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dc.contributor.authorVan Gaalen, Kenneth Eric
dc.contributor.authorUniversity of Lethbridge. Faculty of Arts and Science
dc.contributor.supervisorFlanagan, Larry B.
dc.contributor.supervisorPeddle, Derek Roland
dc.date.accessioned2007-05-23T20:46:10Z
dc.date.available2007-05-23T20:46:10Z
dc.date.issued2005
dc.degree.levelMasters
dc.descriptionxi, 110 leaves : ill. (some col.) ; 29 cm.en
dc.description.abstractMoss dominated ecosystems are an important part of the global terrestrial carbon cycle. Over large areas, remote sensing can be useful to provide an improved understanding of these ecosystems. Two boreal mossess (Pleurozium and Sphagnum) were assessed using remote sensing based spectral vegetation indices for estimating biochemical capacity and photosynthetic efficiency by varying net photosynthesis rate via changes in water content. In the laboratory, changes in the normalized difference vegetation index (NDVI) and chlorophyll index coincided with declining photosynthetic capacity due to desiccation. This effect was more dramatic in Sphagnum. The photochemical reflectance index (PRI) did not vary with changes in CO2 supply as anticipated, possibly due to overriding effects of changing water content. The water band index (WBI) was strongly related to water content but this relationship showed an uncoupling in the field. Bi-directional reflectance measurements indicated what WBI was sensitive to sensor, sun, and moss surface slope angles.en
dc.identifier.urihttps://hdl.handle.net/10133/293
dc.language.isoen_USen
dc.publisherLethbridge, Alta. : University of Lethbridge, Faculty of Arts and Science, 2005en
dc.publisher.departmentDepartment of Geography
dc.publisher.facultyArts and Science
dc.relation.ispartofseriesThesis (University of Lethbridge. Faculty of Arts and Science)en
dc.subjectEnvironmental monitoring -- Remote sensingen
dc.subjectCarbon cycle (Biogeochemistry) -- Remote sensingen
dc.subjectPhotosynthesis -- Researchen
dc.subjectPeat mosses -- Remote sensingen
dc.subjectMosses -- Remote sensingen
dc.subjectAtmospheric carbon dioxide -- Environmental aspectsen
dc.subjectDissertations, Academicen
dc.titlePhotosynthetic CO2 exchange and spectral vegetation indices of boreal mossesen
dc.typeThesisen
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