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Aquatic insect responses to predation and temperature: variation in context dependent trophic interactions

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dc.contributor.authorMorton, Scott Gregory, author
dc.contributor.authorPoff, N. LeRoy, advisor
dc.contributor.authorKondratieff, Boris, committee member
dc.contributor.authorSchmidt, Travis, committee member
dc.date.accessioned2017-09-14T16:07:04Z
dc.date.available2019-09-12T16:04:38Z
dc.date.issued2017
dc.description.abstractTrophic cascades, the indirect effects of carnivores on primary producers mediated by herbivores, remains a central theme of ecological theory. How climate change will alter the mechanisms controlling such interactions remains largely unexplored, certainly in stream ecosystems. In montane streams, stonefly predators have been documented to indirectly affect algal biomass by influencing the distribution, abundance, behavior, and life histories of invertebrate grazers. Density mediated indirect interactions (DMII) occur when primary producer biomass is primarily influenced by changes in herbivore abundance due to consumption by predators. Trait-mediated indirect interactions (TMII) alter primary producer abundance through non-consumptive interactions such as anti-predatory behaviors. In this research, I conducted mesocosm experiments on stonefly predators and mayfly prey to determine the relative importance of grazers on regulating algal production under three temperature treatments intended to simulate climate warming. Furthermore, I examined the influence of both DMII and TMII on algal production through consumptive and non-consumptive predatory treatments. I found algal biomass to decrease as temperature increased, however found no differences among grazer-alone treatments versus DMII or TMII on algal production.
dc.format.mediumborn digital
dc.format.mediummasters theses
dc.identifierMorton_colostate_0053N_14431.pdf
dc.identifier.urihttps://hdl.handle.net/10217/184051
dc.languageEnglish
dc.language.isoeng
dc.publisherColorado State University. Libraries
dc.relation.ispartof2000-2019
dc.rightsCopyright and other restrictions may apply. User is responsible for compliance with all applicable laws. For information about copyright law, please see https://libguides.colostate.edu/copyright.
dc.subjectTMII
dc.subjectDMII
dc.subjecttrophic cascades
dc.titleAquatic insect responses to predation and temperature: variation in context dependent trophic interactions
dc.typeText
dcterms.embargo.expires2019-09-12
dcterms.embargo.terms2019-09-12
dcterms.rights.dplaThis Item is protected by copyright and/or related rights (https://rightsstatements.org/vocab/InC/1.0/). You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s).
thesis.degree.disciplineBiology
thesis.degree.grantorColorado State University
thesis.degree.levelMasters
thesis.degree.nameMaster of Science (M.S.)

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