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dc.contributor.advisorPatterson, William P.en_US
dc.creatorWurster, Christopher Martinen_US
dc.date.accessioned2005-08-03T11:08:09Zen_US
dc.date.accessioned2013-01-04T04:50:17Z
dc.date.available2006-08-04T08:00:00Zen_US
dc.date.available2013-01-04T04:50:17Z
dc.date.created2005-07en_US
dc.date.issued2005-07-20en_US
dc.date.submittedJuly 2005en_US
dc.identifier.urihttp://hdl.handle.net/10388/etd-08032005-110809en_US
dc.description.abstractThe rationale of this study is to apply light stable isotope chemistry towards investigations that require temporally high-resolution data. High-resolution (or high sampling frequency) data sets, are critical for testing environmental and/or paleoenvironmental hypotheses that seek to explain processes occurring over rapid or short time intervals. The investigation of climate variation (e.g., seasonality, El Niño, deglaciation), animal migration and physiology, and disturbance ecology (e.g., fire, flooding) benefits from the recovery of proxy information at decadal to subannual resolutions. The type of material used also dictates a spatial scale. Herein are presented four studies that utilize high-resolution light stable isotope profiles with contrasting temporal and spatial scales. The first study employs advances in three-dimensional computer-controlled micromilling to recover ~daily to weekly deposited carbonate from small (~1 cm) mollusc shells. Stable oxygen isotope values from freshwater mollusc shells are predictably related to the local environment of growth using previously published temperature-fractionation relationships, providing a paleoclimate record of temperature and precipitation. The second study investigates variation in stable carbon isotope values from Aplodinotus grunniens otoliths, for which high-resolution patterns were critical in assessing metabolic rate as the governing control. The third study employs high-resolution stable oxygen and carbon isotope values to determine chinook salmon (Oncorhynchus tshawytscha) seasonal and ontogenetic migration in Lake Ontario and its tributaries. Lastly, high-resolution stable hydrogen and carbon isotope values of chitin derived from Mexican free-tailed bat (Tadarida brasiliensis) guano are presented, providing a record of abrupt climate change. Thus, this thesis reports on promising new research avenues for paleoclimatology, paleoecology, and modern ecology.en_US
dc.language.isoen_USen_US
dc.subjectstable carbon isotopeen_US
dc.subjectthermal behavioren_US
dc.subjectpaleoclimateen_US
dc.subjectotolithen_US
dc.subjectmetabolic rateen_US
dc.subjectdeuteriumen_US
dc.subjectbat guanoen_US
dc.subjectstable oxygen isotopeen_US
dc.subjectsemi-ariden_US
dc.titleAdvances in the reconstruction of temperature history, physiology and paleoenvironmental change : evidence from light stable isotope chemistryen_US
thesis.degree.departmentGeological Sciencesen_US
thesis.degree.disciplineGeological Sciencesen_US
thesis.degree.grantorUniversity of Saskatchewanen_US
thesis.degree.levelDoctoralen_US
thesis.degree.nameDoctor of Philosophy (Ph.D.)en_US
dc.type.materialtexten_US
dc.type.genreThesisen_US
dc.contributor.committeeMemberWassenaar, Lenen_US
dc.contributor.committeeMemberSauer, Peteren_US
dc.contributor.committeeMemberHolmden, Chrisen_US
dc.contributor.committeeMemberHobson, Keith A.en_US
dc.contributor.committeeMemberAnsdell, Kevin M.en_US


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