Thesis (M.S.)--University of Missouri-Columbia, 2007. / The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file (viewed on November 1, 2007) Includes bibliographical references.

Thesis (M.S. - Hydrology and Water Resources)--University of Arizona. / Includes bibliographical references (leaves 119-128).

Thesis (Ph.D.)--University of Wollongong, 2004. / Typescript. Includes bibliographical references: p. 366-393.

Thesis (Ph.D.)--University of Alberta, 2010. / Title from PDF file main screen (viewed on Apr. 13, 2010). A thesis submitted to the Faculty of Graduate Studies and Research in partial fulfillment of the requirements for the degree of Doctor of Philosophy, Department of Earth and Atmospheric Sciences, University of Alberta. Includes bibliographical references.

Thesis (Ph. D.)--University of Missouri-Columbia, 1996. / Typescript. Vita. Includes bibliographical references (leaves 120-126). Also available on the Internet.

Thesis (Ph. D.)--University of Missouri-Columbia, 1996. / Typescript. Vita. Includes bibliographical references (leaves 120-126). Also available on the Internet.

Thesis (doctoral)--Faculté des sciences de Paris, (197-?). / Includes bibliographical references (leaves [43]-[46]).

Thesis (Ph. D.)--Drexel University, 2005. / Includes abstract and vita. Includes bibliographical references (leaves 191-199).

Thesis (M.S.)--University of Wisconsin--Madison, 1982. / Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 112-116).

Development of the Athabasca Oil Sands Region (AOSR) has increased atmospheric nitrogen emissions, a trend which is expected to increase in the future. The area surrounding development is comprised of Boreal upland forests and peatlands. Improved understanding of the hydrological connectivity between Boreal peatlands and uplands is needed to predict the fate and transport of atmospheric N deposited across the region. Two field sites: Jack Pine High (JPH, located 45 km north of Fort McMurray) and Mariana Lakes (ML, located 100 km south of Fort McMurray) were instrumented with piezometers nests and water table wells for this study (n= 108 sampling locations). The wells were placed along transects that cover target landscape units (bog, fen, upland). Wells were sampled for water isotopes and geochemical parameters during the summers of 2011-2014 to characterize the baseline geochemistry of groundwater in the different landscape units. Inorganic (nitrate, ammonium) and organic forms of nitrogen (dissolved organic nitrogen), major and minor ions and water isotope tracers (18O, 2H and 3H) were measured to identify the various forms of nitrogen in the different landscape units, as well as to assess connectivity and potential for nitrogen transport between the different units. At JPH surface and groundwater flow is from the uplands to the fen. There was little (<0.1-1.5 mg/L) nitrate, ammonium, or dissolved organic nitrate (DON) found throughout JPH. At ML nitrogen concentrations were higher (<0.1-30 mg/l) and concentrations of ammonium and DON increased at depths throughout ML. The distribution of 3H with depth within the peatland reveals limited connectivity between the peat and underlying mineral soils. Tritium sampling at ML indicates that at some locations the wetland residence time is greater than 50 years. Nitrogen movement out of peatlands may take longer due to conversions and storage. At ML nitrogen (NH4 and DON) is produced and stored at depth in the wetlands. At JPH higher nitrogen concentrations are found in the shallow groundwater of the fen. Increases in nitrogen inputs to JPH and ML are likely to be utilized by plants, but dramatic changes to the peatland may cause stored nitrogen to become mobile. / Graduate