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METAL EFFECTS ON FRESHWATER MICROBIAL COMMUNITY COMPOSITION, STRUCTURE, AND FUNCTION IN AN URBAN STREAM

Roberto, Alescia
http://orcid.org/0000-0002-0317-7384
http://rave.ohiolink.edu/etdc/view?acc_num=kent1543839535987157

Abstract Details

2018, PHD, Kent State University, College of Arts and Sciences / Department of Biological Sciences.
In urban streams, contaminants such as antibiotics, ARGs, nutrients, and metals, co-occur with anthropogenic activities. These toxicants can have a profound effect on microbial community composition, which may, in turn, affect microbial community function. Such results suggest that the composition and function of microbial communities are consequences of their response to environmental stimuli. However, the differing physiological responses of microorganisms to environmental stressors suggests that community structure may be an important factor driving the community's functional responses to avoid or reduce the effects associated with physiochemical changes in the environment. With the projected increase in concurrent environmental stressors associated with the anthropogenic activity, there is a need to understand how microbial communities respond to compounded stressors. The overarching question for my dissertation is: how does chemical stress (in the form of heavy metals) interact with other environmental factors (including hydrologic conditions and nutrients) to impact microbial community structure and function in streams? To address this question, I utilized a combination of trait-based molecular approaches in tandem with biological and chemical field measurements and laboratory experiments. I looked at how microbial, specifically bacterial and diatom, community composition, structure, and function were affected by different stresses that are found within urban streams.
Laura Leff (Advisor)
Christopher Blackwood (Committee Member)
Xiaozhen Mou (Committee Member)
Elizabeth Herndon (Committee Member)
318 p.
Aquatic Sciences; Biology; Ecology; Environmental Science; Microbiology
Microbiology; Aquatic Microbiology; Land Use; Urban Discharge; WWTPs; Stormwater runoff; Antibiotic Resistance; Metal Resistance; lovemonkey; Metals; Nutrients; Biofilms; Diatoms; Bacterial-Diatom Interactions; Urban Streams

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Citations

  • Roberto, A. (2018). METAL EFFECTS ON FRESHWATER MICROBIAL COMMUNITY COMPOSITION, STRUCTURE, AND FUNCTION IN AN URBAN STREAM [Doctoral dissertation, Kent State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=kent1543839535987157

    APA Style (7th edition)

  • Roberto, Alescia. METAL EFFECTS ON FRESHWATER MICROBIAL COMMUNITY COMPOSITION, STRUCTURE, AND FUNCTION IN AN URBAN STREAM. 2018. Kent State University, Doctoral dissertation. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=kent1543839535987157.

    MLA Style (8th edition)

  • Roberto, Alescia. "METAL EFFECTS ON FRESHWATER MICROBIAL COMMUNITY COMPOSITION, STRUCTURE, AND FUNCTION IN AN URBAN STREAM." Doctoral dissertation, Kent State University, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=kent1543839535987157

    Chicago Manual of Style (17th edition)

kent1543839535987157
326
© 2018, all rights reserved.
This open access ETD is published by Kent State University and OhioLINK.