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dc.contributor.authorBland, Stephanie
dc.date.accessioned2019-11-28T16:19:47Z
dc.date.available2019-11-28T16:19:47Z
dc.identifier.urihttp://hdl.handle.net/10222/76695
dc.description.abstractBody size determines key ecological and evolutionary processes of organisms. Therefore, organisms undergo extensive shifts in resources, competitors and predators as they grow in body size. While empirical and theoretical evidence show that these size-dependent ontogenetic shifts vastly influence the structure and dynamics of populations, theory on how those ontogenetic shifts affect the structure and dynamics of ecological networks is still virtually absent. Here, we take a first step towards generating such theory by developing an Allometric Trophic Network (ATN) model that incorporates size-structure in the population dynamics of fish species within complex food webs. Our preliminary results show that fish with larger allometric ratios attain higher biomass and tend to be correlated with greater ecosystem stability. We also find that that fish with a larger asymptotic body mass tend to be correlated with a larger total ecosystem biomass, a result that holds true across models for both the largest fish in the ecosystem and each fish species in the ecosystem. The approach adopted here offers a potentially instructive means of disentangling the effects of increasing life-history complexity in food-wed models.en_US
dc.language.isoenen_US
dc.subjectEcological modellingen_US
dc.subjectEcological networksen_US
dc.subjectFood websen_US
dc.subjectTheoretical ecologyen_US
dc.titleThe Role Of Fish Life Histories In Allometrically Scaled Food-Web Dynamicsen_US
dc.date.defence2018-06-25
dc.contributor.departmentDepartment of Biologyen_US
dc.contributor.degreeMaster of Scienceen_US
dc.contributor.external-examinerMichael Kinnisonen_US
dc.contributor.graduate-coordinatorSophia Stoneen_US
dc.contributor.thesis-readerNancy Shackellen_US
dc.contributor.thesis-readerJoanna Mills Flemmingen_US
dc.contributor.thesis-supervisorJeffrey Hutchingsen_US
dc.contributor.thesis-supervisorAnna Kuparinenen_US
dc.contributor.ethics-approvalNot Applicableen_US
dc.contributor.manuscriptsNot Applicableen_US
dc.contributor.copyright-releaseNot Applicableen_US
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