Impacts of Climate Change and Multiple Stressors on Water Levels and Phytoplankton in Small Temperate Lakes Within the Great Lakes Region Over Three Decades

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dc.contributor.advisorSharma, Sapna
dc.contributor.authorGaibisels, Katrina Meiri-Liis
dc.date.accessioned2020-05-11T12:33:56Z
dc.date.available2020-05-11T12:33:56Z
dc.date.copyright2019-08
dc.date.issued2020-05-11
dc.date.updated2020-05-11T12:33:55Z
dc.degree.disciplineBiology
dc.degree.levelMaster's
dc.degree.nameMSc - Master of Science
dc.description.abstractChanges in climate influence water quantity and water quality through hydrological processes, thermal regimes, and ice phenology. This thesis investigates the impacts of climate change and additional anthropogenic stressors on water quantity and quality in two study areas with minimal anthropogenic disturbance within the Great Lakes region. Between 1984 and 2014, water levels dropped by an average of 50 cm in northern Wisconsin lakes. We found that 49% of the variation in water levels was attributed to decreased precipitation, and 30% was attributed to warmer air temperatures. Water levels are projected to rise by an average of 44 cm by the year 2070. In south-central Ontario, phytoplankton dominance shifted from diatoms to chrysophytes between 1984 and 2013. Changes in lake chemistry and lake morphometry explained 60% of the variation in phytoplankton biomass. Understanding how multiple interacting stressors affect lakes will help improve ecosystem management strategies.
dc.identifier.urihttps://hdl.handle.net/10315/37334
dc.languageen
dc.rightsAuthor owns copyright, except where explicitly noted. Please contact the author directly with licensing requests.
dc.subjectLimnology
dc.subject.keywordsWater level fluctuations
dc.subject.keywordsClimate change
dc.subject.keywordsForecasting
dc.subject.keywordsLocal weather
dc.subject.keywordsLarge-scale climate drivers
dc.subject.keywordsTime-series analysis
dc.subject.keywordsFreshwater phytoplankton
dc.subject.keywordsAbrupt shifts
dc.subject.keywordsTeleconnections
dc.subject.keywordsMultiple stressors
dc.subject.keywordsAcid rain
dc.subject.keywordsLake brownification
dc.subject.keywordsAlgal blooms
dc.titleImpacts of Climate Change and Multiple Stressors on Water Levels and Phytoplankton in Small Temperate Lakes Within the Great Lakes Region Over Three Decades
dc.typeElectronic Thesis or Dissertation

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