Time series experiments reveal that environmental DNA tracks zooplankton population dynamics in large mesocosms

dc.contributor.advisorHanner, Robert
dc.contributor.advisorFryxell, John
dc.contributor.authorBourque, Danielle
dc.date.accessioned2019-06-28T18:02:21Z
dc.date.available2020-06-10T05:00:44Z
dc.date.copyright2019-06
dc.date.created2019-06-10
dc.date.issued2019-06-28
dc.degree.departmentDepartment of Integrative Biologyen_US
dc.degree.grantorUniversity of Guelphen_US
dc.degree.nameMaster of Scienceen_US
dc.degree.programmeIntegrative Biologyen_US
dc.description.abstractEnvironmental DNA (eDNA) holds great potential for biomonitoring and ecological research. However, its utility for quantifying temporal changes in abundance, biomass, and diversity remains contentious. In this thesis, I investigated biotic and abiotic factors influencing temporal and spatial variation in eDNA concentration. Time series data demonstrated a positive relationship between the population abundance of the cladoceran zooplankton species Daphnia magna and its eDNA concentration in large aquatic mesocosms, with a time lag of ~ 3.5 days. Environmental temperatures of 15 °C promoted greater eDNA persistence than metabolically favorable (25 °C) conditions. Levels of spatial autocorrelation suggest that the swimming activity of Daphnia and/or thermally-driven mixing might have homogenized the distribution of their eDNA over the entire water column.en_US
dc.description.sponsorshipCanada First Research Excellence Fund
dc.identifier.urihttp://hdl.handle.net/10214/16261
dc.language.isoenen_US
dc.publisherUniversity of Guelphen_US
dc.rights.licenseAll items in the Atrium are protected by copyright with all rights reserved unless otherwise indicated.
dc.subjectenvironmental DNAen_US
dc.subjecteDNAen_US
dc.subjectdaphnia magnaen_US
dc.subjectLimnotronen_US
dc.subjecttime seriesen_US
dc.titleTime series experiments reveal that environmental DNA tracks zooplankton population dynamics in large mesocosmsen_US
dc.typeThesisen_US

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