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Examining temporal variations of phytoplankton photoacclimation using a novel fluorescence based approach

dc.contributor.authorComeau, Adam J.
dc.contributor.copyright-releaseNot Applicableen_US
dc.contributor.degreeMaster of Scienceen_US
dc.contributor.departmentDepartment of Oceanographyen_US
dc.contributor.ethics-approvalNot Applicableen_US
dc.contributor.external-examinerDr. Mary Jane Perryen_US
dc.contributor.graduate-coordinatorDr. Dan Kelleyen_US
dc.contributor.manuscriptsNot Applicableen_US
dc.contributor.thesis-readerDr. Katja Fennelen_US
dc.contributor.thesis-readerDr. Keith Thompsonen_US
dc.contributor.thesis-supervisorDr. John Cullenen_US
dc.date.accessioned2010-09-02T13:42:44Z
dc.date.available2010-09-02T13:42:44Z
dc.date.defence2010-08-20
dc.date.issued2010-09-02
dc.description.abstractModels of primary production require parameters to describe photosynthesis as a function of irradiance, such as the saturation irradiance (Ek, ?mol photons m-2 s-1). However, this parameter varies in both time and space, is expensive to measure, and its variability in the oceans is not well described. A novel fluorescence-based approach is presented to determine an empirical parameter (EFT, ?mol photons m-2 s-1), which is strongly correlated with Ek. This correlation provides evidence to use EFT as a proxy for Ek. Using an autonomous profiling instrument package (SeaHorseTM, located on the Scotian Shelf) and an autonomous oceanographic observational buoy (Land/Ocean Biogeochemical Observatory, located in the Northwest Arm, N.S., Canada), the variability of EFT was examined on three time scales: hours, days, and seasons. Studying variations of EFT with these autonomous instruments provided insights to its variability on time scales relevant to models of primary production.en_US
dc.identifier.urihttp://hdl.handle.net/10222/13034
dc.language.isoenen_US
dc.subjectphytoplanktonen_US
dc.subjectchlorophyll a fluorescenceen_US
dc.titleExamining temporal variations of phytoplankton photoacclimation using a novel fluorescence based approachen_US
dc.typeThesisen_US

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