+publisher:"University of North Carolina" +contributor:("Whalen, Stephen")

University of North Carolina

1. Bretz, Kristen Alexandra. Methane Production and Consumption in Alaskan Arctic Lake Sediments.

Degree: Environmental Sciences and Engineering, 2012, University of North Carolina

URL: https://cdr.lib.unc.edu/record/uuid:4bc42784-e6cf-4885-abb6-cfd7e3ca54b9

► Methanogenesis and methane oxidation were studied in the sediments of 6 Alaskan arctic lakes during the 2010 and 2011 thaw seasons. Rates of methane production… (more)

Subjects/Keywords: Gillings School of Global Public Health; Department of Environmental Sciences and Engineering

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APA (6^th Edition):

Bretz, K. A. (2012). Methane Production and Consumption in Alaskan Arctic Lake Sediments. (Thesis). University of North Carolina. Retrieved from https://cdr.lib.unc.edu/record/uuid:4bc42784-e6cf-4885-abb6-cfd7e3ca54b9

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Bretz, Kristen Alexandra. “Methane Production and Consumption in Alaskan Arctic Lake Sediments.” 2012. Thesis, University of North Carolina. Accessed January 20, 2021. https://cdr.lib.unc.edu/record/uuid:4bc42784-e6cf-4885-abb6-cfd7e3ca54b9.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Bretz, Kristen Alexandra. “Methane Production and Consumption in Alaskan Arctic Lake Sediments.” 2012. Web. 20 Jan 2021.

Vancouver:

Bretz KA. Methane Production and Consumption in Alaskan Arctic Lake Sediments. [Internet] [Thesis]. University of North Carolina; 2012. [cited 2021 Jan 20]. Available from: https://cdr.lib.unc.edu/record/uuid:4bc42784-e6cf-4885-abb6-cfd7e3ca54b9.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Bretz KA. Methane Production and Consumption in Alaskan Arctic Lake Sediments. [Thesis]. University of North Carolina; 2012. Available from: https://cdr.lib.unc.edu/record/uuid:4bc42784-e6cf-4885-abb6-cfd7e3ca54b9

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of North Carolina

2. McGowan, Gabriel E. Sediment Emission and Water Column Oxidation of Methane in Alaskan Arctic Lakes.

Degree: Environmental Sciences and Engineering, 2012, University of North Carolina

URL: https://cdr.lib.unc.edu/record/uuid:d4615a6c-94ea-44e6-bb01-3f5e52ce2159

► Methane (CH4) is a greenhouse gas and is important in lacustrine food webs. Cycling of CH4 in arctic lakes is poorly quantified, though arctic wetlands… (more)

Subjects/Keywords: Gillings School of Global Public Health; Department of Environmental Sciences and Engineering

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APA (6^th Edition):

McGowan, G. E. (2012). Sediment Emission and Water Column Oxidation of Methane in Alaskan Arctic Lakes. (Thesis). University of North Carolina. Retrieved from https://cdr.lib.unc.edu/record/uuid:d4615a6c-94ea-44e6-bb01-3f5e52ce2159

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

McGowan, Gabriel E. “Sediment Emission and Water Column Oxidation of Methane in Alaskan Arctic Lakes.” 2012. Thesis, University of North Carolina. Accessed January 20, 2021. https://cdr.lib.unc.edu/record/uuid:d4615a6c-94ea-44e6-bb01-3f5e52ce2159.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

McGowan, Gabriel E. “Sediment Emission and Water Column Oxidation of Methane in Alaskan Arctic Lakes.” 2012. Web. 20 Jan 2021.

Vancouver:

McGowan GE. Sediment Emission and Water Column Oxidation of Methane in Alaskan Arctic Lakes. [Internet] [Thesis]. University of North Carolina; 2012. [cited 2021 Jan 20]. Available from: https://cdr.lib.unc.edu/record/uuid:d4615a6c-94ea-44e6-bb01-3f5e52ce2159.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

McGowan GE. Sediment Emission and Water Column Oxidation of Methane in Alaskan Arctic Lakes. [Thesis]. University of North Carolina; 2012. Available from: https://cdr.lib.unc.edu/record/uuid:d4615a6c-94ea-44e6-bb01-3f5e52ce2159

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of North Carolina

3. Lofton, Dendy D. Factors Regulating Methane Production and Oxidation in Two Shallow Arctic Alaskan Lakes.

Degree: Environmental Sciences and Engineering, 2012, University of North Carolina

URL: https://cdr.lib.unc.edu/record/uuid:d71d2b08-9079-4d04-a86f-05f8bbb0ad38

► Methane (CH4) is second only to CO2 as a greenhouse gas and is produced in the terminal step of organic matter decomposition in anaerobic environments,… (more)

▼ Methane (CH4) is second only to CO2 as a greenhouse gas and is produced in the terminal step of organic matter decomposition in anaerobic environments, including lake sediments. Given the widespread distribution of lakes in Arctic Alaska, CH4 emission from these lakes may significantly contribute to the atmospheric CH4 budget. Aerobic methane oxidizing bacteria consume CH4 diffusing from anaerobic zones of production, thereby modulating the flux of CH4 to the atmosphere. Multiple research efforts indicate a significant source strength for arctic environments in the atmospheric CH4 budget. Predicted climate induced alterations to the arctic landscape include increased organic matter loading from the terrestrial environment and increased temperature. These environmental changes can influence both rates of CH4 production and oxidation, possibly altering rates of CH4 exchange between shallow arctic lakes and the atmosphere. I assessed rates and controls on CH4 production and oxidation in two shallow arctic lakes to provide insight into the response of these two microbial groups to projected future climates. Rates of total methanogenesis and the fractional contribution of the acetoclastic pathway decreased with increasing depth below the sediment surface to 5 cm in both lakes. Substrate additions indicated substrate limitation to both methanogenic pathways (acetoclastic and hydrogenotrophic). Rates of total methanogenesis varied spatially in the horizontal dimension in one lake only. However, there was no consistent relationship between rates of methanogenesis and depth of the overlying water as labile organic matter in the shallow sediments are likely resuspended and deposited unevenly by wind action. Under extant conditions, rates of methanogenesis responded positively to increases in temperature, while rates of CH4 oxidation remained unchanged. The former were controlled by substrate x temperature interactions, while the latter were regulated strictly by substrate supply. Analysis of CH4 oxidation kinetics for water samples points to a community of CH4 oxidizing bacteria that is capable of oxidizing CH4 at concentrations far in excess of observed levels. Increases in organic matter supply and temperature under future climates will likely increase rates of methanogenesis, but the impact may be fully mitigated by the excessive capacity of the CH4-oxidizing community to process the added substrate. Advisors/Committee Members: Lofton, Dendy D., Whalen, Stephen.

Subjects/Keywords: Gillings School of Global Public Health; Department of Environmental Sciences and Engineering

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Lofton, D. D. (2012). Factors Regulating Methane Production and Oxidation in Two Shallow Arctic Alaskan Lakes. (Thesis). University of North Carolina. Retrieved from https://cdr.lib.unc.edu/record/uuid:d71d2b08-9079-4d04-a86f-05f8bbb0ad38

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Lofton, Dendy D. “Factors Regulating Methane Production and Oxidation in Two Shallow Arctic Alaskan Lakes.” 2012. Thesis, University of North Carolina. Accessed January 20, 2021. https://cdr.lib.unc.edu/record/uuid:d71d2b08-9079-4d04-a86f-05f8bbb0ad38.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Lofton, Dendy D. “Factors Regulating Methane Production and Oxidation in Two Shallow Arctic Alaskan Lakes.” 2012. Web. 20 Jan 2021.

Vancouver:

Lofton DD. Factors Regulating Methane Production and Oxidation in Two Shallow Arctic Alaskan Lakes. [Internet] [Thesis]. University of North Carolina; 2012. [cited 2021 Jan 20]. Available from: https://cdr.lib.unc.edu/record/uuid:d71d2b08-9079-4d04-a86f-05f8bbb0ad38.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Lofton DD. Factors Regulating Methane Production and Oxidation in Two Shallow Arctic Alaskan Lakes. [Thesis]. University of North Carolina; 2012. Available from: https://cdr.lib.unc.edu/record/uuid:d71d2b08-9079-4d04-a86f-05f8bbb0ad38

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of North Carolina

4. Christenson, Elizabeth. Using remote sensing to calculate plant available nitrogen from industrial hog CAFOs in North Carolina at the sprayfield and sub-watershed scales.

Degree: Environmental Sciences and Engineering, 2015, University of North Carolina

URL: https://cdr.lib.unc.edu/record/uuid:aecdc409-4b00-4a47-ba50-8b4382f5da18

► Duplin county, NC has the highest hog-population density of any county in the United States. Liquid manure from industrial-sized hog concentrated animal feeding operations (CAFOs)… (more)

Subjects/Keywords: Geographic information systems; Geodesy; Agriculture; Hydrology; Gillings School of Global Public Health; Department of Environmental Sciences and Engineering

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APA (6^th Edition):

Christenson, E. (2015). Using remote sensing to calculate plant available nitrogen from industrial hog CAFOs in North Carolina at the sprayfield and sub-watershed scales. (Thesis). University of North Carolina. Retrieved from https://cdr.lib.unc.edu/record/uuid:aecdc409-4b00-4a47-ba50-8b4382f5da18

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Christenson, Elizabeth. “Using remote sensing to calculate plant available nitrogen from industrial hog CAFOs in North Carolina at the sprayfield and sub-watershed scales.” 2015. Thesis, University of North Carolina. Accessed January 20, 2021. https://cdr.lib.unc.edu/record/uuid:aecdc409-4b00-4a47-ba50-8b4382f5da18.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Christenson, Elizabeth. “Using remote sensing to calculate plant available nitrogen from industrial hog CAFOs in North Carolina at the sprayfield and sub-watershed scales.” 2015. Web. 20 Jan 2021.

Vancouver:

Christenson E. Using remote sensing to calculate plant available nitrogen from industrial hog CAFOs in North Carolina at the sprayfield and sub-watershed scales. [Internet] [Thesis]. University of North Carolina; 2015. [cited 2021 Jan 20]. Available from: https://cdr.lib.unc.edu/record/uuid:aecdc409-4b00-4a47-ba50-8b4382f5da18.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Christenson E. Using remote sensing to calculate plant available nitrogen from industrial hog CAFOs in North Carolina at the sprayfield and sub-watershed scales. [Thesis]. University of North Carolina; 2015. Available from: https://cdr.lib.unc.edu/record/uuid:aecdc409-4b00-4a47-ba50-8b4382f5da18

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of North Carolina

5. Broadwater, Katherine. Passive Reduction of Methane Emissions from a Hog Waste Lagoon Using a Floating Biofilter System.

Degree: Environmental Sciences and Engineering, 2016, University of North Carolina

URL: https://cdr.lib.unc.edu/record/uuid:657df2ef-d1d0-47d0-9083-07cb67aed415

► Roughly 9 million hogs reside in NC in confined animal feeding operations, where waste is stored in anaerobic, open-air lagoons. Methane (CH4) is an important… (more)

Subjects/Keywords: Gillings School of Global Public Health; Department of Environmental Sciences and Engineering

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Broadwater, K. (2016). Passive Reduction of Methane Emissions from a Hog Waste Lagoon Using a Floating Biofilter System. (Thesis). University of North Carolina. Retrieved from https://cdr.lib.unc.edu/record/uuid:657df2ef-d1d0-47d0-9083-07cb67aed415

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Broadwater, Katherine. “Passive Reduction of Methane Emissions from a Hog Waste Lagoon Using a Floating Biofilter System.” 2016. Thesis, University of North Carolina. Accessed January 20, 2021. https://cdr.lib.unc.edu/record/uuid:657df2ef-d1d0-47d0-9083-07cb67aed415.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Broadwater, Katherine. “Passive Reduction of Methane Emissions from a Hog Waste Lagoon Using a Floating Biofilter System.” 2016. Web. 20 Jan 2021.

Vancouver:

Broadwater K. Passive Reduction of Methane Emissions from a Hog Waste Lagoon Using a Floating Biofilter System. [Internet] [Thesis]. University of North Carolina; 2016. [cited 2021 Jan 20]. Available from: https://cdr.lib.unc.edu/record/uuid:657df2ef-d1d0-47d0-9083-07cb67aed415.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Broadwater K. Passive Reduction of Methane Emissions from a Hog Waste Lagoon Using a Floating Biofilter System. [Thesis]. University of North Carolina; 2016. Available from: https://cdr.lib.unc.edu/record/uuid:657df2ef-d1d0-47d0-9083-07cb67aed415

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of North Carolina

6. Hart, Justin. Quantifying sources of fecal contamination in a coastal system with complex stormwater dynamics.

Degree: Environmental Sciences and Engineering, 2017, University of North Carolina

URL: https://cdr.lib.unc.edu/record/uuid:d1c2b9fc-b867-4a09-862d-fb3bc0c07117

► Coastal North Carolina (NC) exhibits complex meteorological and hydrological dynamics that facilitate the delivery of fecal contaminants to downstream receiving waters via stormwater runoff. A… (more)

Subjects/Keywords: Gillings School of Global Public Health; Department of Environmental Sciences and Engineering

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Hart, J. (2017). Quantifying sources of fecal contamination in a coastal system with complex stormwater dynamics. (Thesis). University of North Carolina. Retrieved from https://cdr.lib.unc.edu/record/uuid:d1c2b9fc-b867-4a09-862d-fb3bc0c07117

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Hart, Justin. “Quantifying sources of fecal contamination in a coastal system with complex stormwater dynamics.” 2017. Thesis, University of North Carolina. Accessed January 20, 2021. https://cdr.lib.unc.edu/record/uuid:d1c2b9fc-b867-4a09-862d-fb3bc0c07117.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Hart, Justin. “Quantifying sources of fecal contamination in a coastal system with complex stormwater dynamics.” 2017. Web. 20 Jan 2021.

Vancouver:

Hart J. Quantifying sources of fecal contamination in a coastal system with complex stormwater dynamics. [Internet] [Thesis]. University of North Carolina; 2017. [cited 2021 Jan 20]. Available from: https://cdr.lib.unc.edu/record/uuid:d1c2b9fc-b867-4a09-862d-fb3bc0c07117.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Hart J. Quantifying sources of fecal contamination in a coastal system with complex stormwater dynamics. [Thesis]. University of North Carolina; 2017. Available from: https://cdr.lib.unc.edu/record/uuid:d1c2b9fc-b867-4a09-862d-fb3bc0c07117

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of North Carolina

7. Bronson, Sydney. Assessing the Minimum Entropy Production Rate Principle for Multiphase Flow Using the Thermodynamically Constrained Averaging Theory Approach.

Degree: Environmental Sciences and Engineering, 2014, University of North Carolina

URL: https://cdr.lib.unc.edu/record/uuid:f1bba815-78da-4aca-952d-e13bfb646ec4

► The thermodynamically constrained averaging theory (TCAT) approach was used to derive a general model for multiphase flow in porous media. Additionally, an entropy inequality was… (more)

Subjects/Keywords: Environmental sciences; Environmental engineering; Gillings School of Global Public Health; Department of Environmental Sciences and Engineering

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APA (6^th Edition):

Bronson, S. (2014). Assessing the Minimum Entropy Production Rate Principle for Multiphase Flow Using the Thermodynamically Constrained Averaging Theory Approach. (Thesis). University of North Carolina. Retrieved from https://cdr.lib.unc.edu/record/uuid:f1bba815-78da-4aca-952d-e13bfb646ec4

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Bronson, Sydney. “Assessing the Minimum Entropy Production Rate Principle for Multiphase Flow Using the Thermodynamically Constrained Averaging Theory Approach.” 2014. Thesis, University of North Carolina. Accessed January 20, 2021. https://cdr.lib.unc.edu/record/uuid:f1bba815-78da-4aca-952d-e13bfb646ec4.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Bronson, Sydney. “Assessing the Minimum Entropy Production Rate Principle for Multiphase Flow Using the Thermodynamically Constrained Averaging Theory Approach.” 2014. Web. 20 Jan 2021.

Vancouver:

Bronson S. Assessing the Minimum Entropy Production Rate Principle for Multiphase Flow Using the Thermodynamically Constrained Averaging Theory Approach. [Internet] [Thesis]. University of North Carolina; 2014. [cited 2021 Jan 20]. Available from: https://cdr.lib.unc.edu/record/uuid:f1bba815-78da-4aca-952d-e13bfb646ec4.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Bronson S. Assessing the Minimum Entropy Production Rate Principle for Multiphase Flow Using the Thermodynamically Constrained Averaging Theory Approach. [Thesis]. University of North Carolina; 2014. Available from: https://cdr.lib.unc.edu/record/uuid:f1bba815-78da-4aca-952d-e13bfb646ec4

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of North Carolina

8. Weng, Chien-Hsiu. Antibiotic Resistant Staphyloccus Aureus Dissemination from Hog Farms: A Systematic Review.

Degree: Environmental Sciences and Engineering, 2016, University of North Carolina

URL: https://cdr.lib.unc.edu/record/uuid:e6076d2d-8d1d-4303-a982-e866364020ab

► Research has identified antibiotic-resistant livestock-associated Staphylococcus aureus (LA-SA) in humans, suggesting that animal husbandry is contributing to the global spread of antibiotic resistance. However, the… (more)

Subjects/Keywords: Gillings School of Global Public Health; Department of Environmental Sciences and Engineering

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Weng, C. (2016). Antibiotic Resistant Staphyloccus Aureus Dissemination from Hog Farms: A Systematic Review. (Thesis). University of North Carolina. Retrieved from https://cdr.lib.unc.edu/record/uuid:e6076d2d-8d1d-4303-a982-e866364020ab

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Weng, Chien-Hsiu. “Antibiotic Resistant Staphyloccus Aureus Dissemination from Hog Farms: A Systematic Review.” 2016. Thesis, University of North Carolina. Accessed January 20, 2021. https://cdr.lib.unc.edu/record/uuid:e6076d2d-8d1d-4303-a982-e866364020ab.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Weng, Chien-Hsiu. “Antibiotic Resistant Staphyloccus Aureus Dissemination from Hog Farms: A Systematic Review.” 2016. Web. 20 Jan 2021.

Vancouver:

Weng C. Antibiotic Resistant Staphyloccus Aureus Dissemination from Hog Farms: A Systematic Review. [Internet] [Thesis]. University of North Carolina; 2016. [cited 2021 Jan 20]. Available from: https://cdr.lib.unc.edu/record/uuid:e6076d2d-8d1d-4303-a982-e866364020ab.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Weng C. Antibiotic Resistant Staphyloccus Aureus Dissemination from Hog Farms: A Systematic Review. [Thesis]. University of North Carolina; 2016. Available from: https://cdr.lib.unc.edu/record/uuid:e6076d2d-8d1d-4303-a982-e866364020ab

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of North Carolina

9. Fortino, Kenneth. Organic matter processing in arctic lake sediments.

Degree: Environmental Sciences and Engineering, 2010, University of North Carolina

URL: https://cdr.lib.unc.edu/record/uuid:a0036bd4-986c-4a0b-a44b-e5552824027f

► Lakes are a common landscape feature in the arctic and interact with carbon cycling through the sequestration of organic matter in their sediments. My research… (more)

▼ Lakes are a common landscape feature in the arctic and interact with carbon cycling through the sequestration of organic matter in their sediments. My research assessed the relative importance of landscape- and within-lake-scale factors on organic matter cycling in arctic lake sediments. Sediment organic matter mineralization (measured as sediment oxygen demand) varied between -8 and 40 mmol O2 m-2 d-1 and was proportional to water temperature and oxygen concentration. There was greater variation in organic matter mineralization within lakes than between lakes, suggesting that variation in mineralization occurs primarily at the within-lake scale. At the both the landscape- and within-lake-scale, sediment slurries with greater percent organic matter had a higher rate of dissolved inorganic carbon (DIC) production and the effect of oxygen exposure on DIC production was greatest in those sediments with the lowest percent organic matter. Despite the variation in mineralization, organic matter content of the sediments (17 to 69%) varied primarily among lakes (i.e., at the landscape-scale) and was driven by organic matter inputs via benthic primary production. My results suggest that the attenuation of light by dissolved organic carbon in the water indirectly influences organic matter storage in arctic lake sediments. In addition to the direct limitations of organic matter input via benthic photosynthesis, the amount of light attenuation indirectly alters sediment organic matter cycling via changes to the distribution of temperature and oxygen within the lake. Light attenuation was inversely proportional to the depth of thermal stratification, which determines the distribution of temperature and oxygen in stratified lakes. I estimated that a doubling of the light attenuation would result in a 30% decrease in the area of the sediments exposed to the relatively warm and oxygenated waters of the epilimnion. The interconnection between these factors provides a potential climate change feedback to arctic carbon cycling. Changes in terrestrial organic matter inputs to lakes due to climate change will alter transparency and the depth of the thermocline, changing the distribution of light, temperature and oxygen in the lake and thus the factors limiting the production and decomposition of organic matter in the lake sediments. Advisors/Committee Members: Fortino, Kenneth, Whalen, Stephen, University of North Carolina at Chapel Hill.

Subjects/Keywords: Gillings School of Global Public Health; Department of Environmental Sciences and Engineering

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Fortino, K. (2010). Organic matter processing in arctic lake sediments. (Thesis). University of North Carolina. Retrieved from https://cdr.lib.unc.edu/record/uuid:a0036bd4-986c-4a0b-a44b-e5552824027f

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Fortino, Kenneth. “Organic matter processing in arctic lake sediments.” 2010. Thesis, University of North Carolina. Accessed January 20, 2021. https://cdr.lib.unc.edu/record/uuid:a0036bd4-986c-4a0b-a44b-e5552824027f.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Fortino, Kenneth. “Organic matter processing in arctic lake sediments.” 2010. Web. 20 Jan 2021.

Vancouver:

Fortino K. Organic matter processing in arctic lake sediments. [Internet] [Thesis]. University of North Carolina; 2010. [cited 2021 Jan 20]. Available from: https://cdr.lib.unc.edu/record/uuid:a0036bd4-986c-4a0b-a44b-e5552824027f.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Fortino K. Organic matter processing in arctic lake sediments. [Thesis]. University of North Carolina; 2010. Available from: https://cdr.lib.unc.edu/record/uuid:a0036bd4-986c-4a0b-a44b-e5552824027f

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of North Carolina

10. Staunton, Eric. Integrated Biological Treatment of Swine Waste for Nitrogen Removal and Energy Recovery.

Degree: Environmental Sciences and Engineering, 2015, University of North Carolina

URL: https://cdr.lib.unc.edu/record/uuid:312242d8-9543-40c1-99fc-c4a380e1b39c

► Nitrogen emissions associated with swine waste management have been identified as sources of several adverse public health and environmental effects, including: contamination of drinking water,… (more)

▼ Nitrogen emissions associated with swine waste management have been identified as sources of several adverse public health and environmental effects, including: contamination of drinking water, respiratory diseases, production of ground level ozone, depletion of stratospheric ozone, release of greenhouse gases, and acidification of soils and watersheds. These adverse effects make the technologically and economically feasible removal of nitrogen highly desirable. To understand the technological feasibility of nitrogen removal from swine waste, two biological systems were designed and operated: a traditional, pilot-scale, Modified Ludzack-Ettinger (MLE) process; and a lab-scale, single-reactor, nitritation/anaerobic ammonium oxidation (anammox) process. The MLE process removed ~98% influent ammonium-N and ~83% influent total-N. Approximately 75% of the chemical oxygen demand (COD) was oxidized; the majority of COD was utilized as a source of electron equivalents for denitrification. The concentration of COD varied seasonally and full-scale N removal is expected to vary seasonally as well. There was only enough COD for complete denitrification in winter months. Alkalinity in the waste is insufficient to meet the demand associated with nitrification, although the extent of external alkalinity addition is expected to vary seasonally. Of the removed nitrogen, ~8% was released as nitrous oxide, primarily as a side-product of nitrification. The single-reactor nitritation/anammox process removed up to 96% of influent ammonium-N and up to 90% influent total-N. Several observations indicated anammox as the primary N removal pathway though the relative contribution of denitrification is unknown. This system required at least 49% less oxygen than a conventional nitrogen removal system and required no external alkalinity which should minimize the cost associated with nitrogen removal. Of the removed N, 11% was converted to nitrous oxide. The microbial community associated with nitritation/anammox was examined by quantitative PCR and bar-coded amplicon sequencing. The microbes known to perform anammox were found to comprise a small fraction of the total biomass. A significant shift in the dominant anammox bacteria was observed, from a seed culture dominated by Candidatus Brocadia to Candidatus Kuenenia dominating in the reactor biomass. An uncharacterized Planctomycete was identified as a dominant member of the community, though it is unknown if this microbe performs anammox. Advisors/Committee Members: Staunton, Eric, Aitken, Michael, Deshusses, Marc, Matthysse, Ann, Stewart, Jill, Walters, Glenn, Whalen, Stephen.

Subjects/Keywords: Environmental engineering; Microbiology; Gillings School of Global Public Health; Department of Environmental Sciences and Engineering

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APA (6^th Edition):

Staunton, E. (2015). Integrated Biological Treatment of Swine Waste for Nitrogen Removal and Energy Recovery. (Thesis). University of North Carolina. Retrieved from https://cdr.lib.unc.edu/record/uuid:312242d8-9543-40c1-99fc-c4a380e1b39c

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Staunton, Eric. “Integrated Biological Treatment of Swine Waste for Nitrogen Removal and Energy Recovery.” 2015. Thesis, University of North Carolina. Accessed January 20, 2021. https://cdr.lib.unc.edu/record/uuid:312242d8-9543-40c1-99fc-c4a380e1b39c.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Staunton, Eric. “Integrated Biological Treatment of Swine Waste for Nitrogen Removal and Energy Recovery.” 2015. Web. 20 Jan 2021.

Vancouver:

Staunton E. Integrated Biological Treatment of Swine Waste for Nitrogen Removal and Energy Recovery. [Internet] [Thesis]. University of North Carolina; 2015. [cited 2021 Jan 20]. Available from: https://cdr.lib.unc.edu/record/uuid:312242d8-9543-40c1-99fc-c4a380e1b39c.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Staunton E. Integrated Biological Treatment of Swine Waste for Nitrogen Removal and Energy Recovery. [Thesis]. University of North Carolina; 2015. Available from: https://cdr.lib.unc.edu/record/uuid:312242d8-9543-40c1-99fc-c4a380e1b39c

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of North Carolina

11. Tipton, Claire. Evaluation of a low-cost compartment bag test to quantify hydrogen sulfideproducing bacteria in drinking water.

Degree: Environmental Sciences and Engineering, 2017, University of North Carolina

URL: https://cdr.lib.unc.edu/record/uuid:29500869-082b-4a23-93f6-f46dab0abc94

► Tests for detecting hydrogen sulfide (H2S)-producing bacteria as fecal indicators have been proposed to assess drinking water safety in low-resource settings. This study compared a… (more)

Subjects/Keywords: Gillings School of Global Public Health; Department of Environmental Sciences and Engineering

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Tipton, C. (2017). Evaluation of a low-cost compartment bag test to quantify hydrogen sulfideproducing bacteria in drinking water. (Thesis). University of North Carolina. Retrieved from https://cdr.lib.unc.edu/record/uuid:29500869-082b-4a23-93f6-f46dab0abc94

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Tipton, Claire. “Evaluation of a low-cost compartment bag test to quantify hydrogen sulfideproducing bacteria in drinking water.” 2017. Thesis, University of North Carolina. Accessed January 20, 2021. https://cdr.lib.unc.edu/record/uuid:29500869-082b-4a23-93f6-f46dab0abc94.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Tipton, Claire. “Evaluation of a low-cost compartment bag test to quantify hydrogen sulfideproducing bacteria in drinking water.” 2017. Web. 20 Jan 2021.

Vancouver:

Tipton C. Evaluation of a low-cost compartment bag test to quantify hydrogen sulfideproducing bacteria in drinking water. [Internet] [Thesis]. University of North Carolina; 2017. [cited 2021 Jan 20]. Available from: https://cdr.lib.unc.edu/record/uuid:29500869-082b-4a23-93f6-f46dab0abc94.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Tipton C. Evaluation of a low-cost compartment bag test to quantify hydrogen sulfideproducing bacteria in drinking water. [Thesis]. University of North Carolina; 2017. Available from: https://cdr.lib.unc.edu/record/uuid:29500869-082b-4a23-93f6-f46dab0abc94

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of North Carolina

12. Dubbs, Lindsay L. Persistence and potential causes of reduced net CH4 consumption under elevated CO2 in a temperate forest.

Degree: Environmental Sciences and Engineering, 2009, University of North Carolina

URL: https://cdr.lib.unc.edu/record/uuid:7c324349-cd0f-42f9-b36f-49e6caf4a2d3

► Impacts of the projected increase in atmospheric CO2 on other biogeochemical cycles are uncertain. In a two-year study, Phillips et al. (2001) reported a 16… (more)

▼ Impacts of the projected increase in atmospheric CO2 on other biogeochemical cycles are uncertain. In a two-year study, Phillips et al. (2001) reported a 16 to 30% decrease in net consumption of atmospheric CH4 by soils in CO2-enriched plots in a temperate loblolly pine (Pinus taeda) forest. Consumption by upland soils accounts for [approximately]30 Tg CH4 y-1 and is the only terrestrial sink for atmospheric CH4, which is a greenhouse gas with radiative forcing second only to CO2. However, it is uncertain whether decreased atmospheric CH4 consumption represents a transient or sustained response of forest-soil systems to elevated CO2. This research focused on field observations aimed at investigating the strength and persistence of reduced atmospheric CH4 consumption by temperate forest soils under elevated CO2 at the same study site. It further investigates the causes of this response by CH4 oxidizing and producing communities through field and laboratory experiments. Rates of soil-atmosphere CH4 exchange were repeatedly measured over 3 y from permanently established sampling sites at the Free Air Carbon Dioxide (FACE) site in the Duke Forest, where CO2-enriched plots of a loblolly pine forest are maintained at approximately 200 mL L-1 above ambient concentrations (380 mL L-1), while control plots are exposed to ambient atmospheres. Reduced net atmospheric CH4 consumption persisted in CO2-enriched plots, showing annual declines of 19, 10 and 8% relative to control plots. This study and previous work give a nearly continuous 8 y record of reduced net atmospheric CH4 consumption in CO2 -enriched plots that suggests this is likely a sustained negative feedback to increasing atmospheric CO2. Causitive factors for the observed decrease in net CH4 consumption under elevated CO2 were difficult to identify because of high spatial and temporal variability in microbial activity and limited ability to collect soil samples. However, higher soil moisture and increased incidence and rates of CH4 production in CO2-enriched plots, along with transient inhibition by plant exudates and low overall soil diffusivity, begin to explain reduced rates of CH4 consumption and increased rates of CH4 production that result in long-term reduction in net CH4 consumption in these soils. Advisors/Committee Members: Dubbs, Lindsay L., Whalen, Stephen, University of North Carolina at Chapel Hill.

Subjects/Keywords: Gillings School of Global Public Health; Department of Environmental Sciences and Engineering

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Dubbs, L. L. (2009). Persistence and potential causes of reduced net CH4 consumption under elevated CO2 in a temperate forest. (Thesis). University of North Carolina. Retrieved from https://cdr.lib.unc.edu/record/uuid:7c324349-cd0f-42f9-b36f-49e6caf4a2d3

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Dubbs, Lindsay L. “Persistence and potential causes of reduced net CH4 consumption under elevated CO2 in a temperate forest.” 2009. Thesis, University of North Carolina. Accessed January 20, 2021. https://cdr.lib.unc.edu/record/uuid:7c324349-cd0f-42f9-b36f-49e6caf4a2d3.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Dubbs, Lindsay L. “Persistence and potential causes of reduced net CH4 consumption under elevated CO2 in a temperate forest.” 2009. Web. 20 Jan 2021.

Vancouver:

Dubbs LL. Persistence and potential causes of reduced net CH4 consumption under elevated CO2 in a temperate forest. [Internet] [Thesis]. University of North Carolina; 2009. [cited 2021 Jan 20]. Available from: https://cdr.lib.unc.edu/record/uuid:7c324349-cd0f-42f9-b36f-49e6caf4a2d3.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Dubbs LL. Persistence and potential causes of reduced net CH4 consumption under elevated CO2 in a temperate forest. [Thesis]. University of North Carolina; 2009. Available from: https://cdr.lib.unc.edu/record/uuid:7c324349-cd0f-42f9-b36f-49e6caf4a2d3

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of North Carolina

13. Diehl, Joelene M. The effect of urea-ammonium-nitrate fertilizer amended with urease and nitrification inhibitors on nitrogen cycling in highly organic agricultural soil.

Degree: Environmental Sciences and Engineering, 2007, University of North Carolina

URL: https://cdr.lib.unc.edu/record/uuid:1e32d91f-220e-4c6d-8c33-e5dc4a0baa5d

► Starting in the mid 20th century the use of nitrogen fertilizers has steadily increased due to the rising demand in food production. Currently, urea-based nitrogen… (more)

Subjects/Keywords: Gillings School of Global Public Health; Department of Environmental Sciences and Engineering

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Diehl, J. M. (2007). The effect of urea-ammonium-nitrate fertilizer amended with urease and nitrification inhibitors on nitrogen cycling in highly organic agricultural soil. (Thesis). University of North Carolina. Retrieved from https://cdr.lib.unc.edu/record/uuid:1e32d91f-220e-4c6d-8c33-e5dc4a0baa5d

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Diehl, Joelene M. “The effect of urea-ammonium-nitrate fertilizer amended with urease and nitrification inhibitors on nitrogen cycling in highly organic agricultural soil.” 2007. Thesis, University of North Carolina. Accessed January 20, 2021. https://cdr.lib.unc.edu/record/uuid:1e32d91f-220e-4c6d-8c33-e5dc4a0baa5d.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Diehl, Joelene M. “The effect of urea-ammonium-nitrate fertilizer amended with urease and nitrification inhibitors on nitrogen cycling in highly organic agricultural soil.” 2007. Web. 20 Jan 2021.

Vancouver:

Diehl JM. The effect of urea-ammonium-nitrate fertilizer amended with urease and nitrification inhibitors on nitrogen cycling in highly organic agricultural soil. [Internet] [Thesis]. University of North Carolina; 2007. [cited 2021 Jan 20]. Available from: https://cdr.lib.unc.edu/record/uuid:1e32d91f-220e-4c6d-8c33-e5dc4a0baa5d.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Diehl JM. The effect of urea-ammonium-nitrate fertilizer amended with urease and nitrification inhibitors on nitrogen cycling in highly organic agricultural soil. [Thesis]. University of North Carolina; 2007. Available from: https://cdr.lib.unc.edu/record/uuid:1e32d91f-220e-4c6d-8c33-e5dc4a0baa5d

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of North Carolina

14. DeBerardinis, Jeffrey T. Nitrogen mass balance for spray fields fertilized with liquid swine waste.

Degree: Environmental Sciences and Engineering, 2006, University of North Carolina

URL: https://cdr.lib.unc.edu/record/uuid:612a684e-41c1-464b-bc98-3b6b1ad16247

► The swine industry has expanded rapidly in North Carolina over the last two decades. Animals are raised in confined facilities where waste is flushed into… (more)

Subjects/Keywords: Gillings School of Global Public Health; Department of Environmental Sciences and Engineering

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

DeBerardinis, J. T. (2006). Nitrogen mass balance for spray fields fertilized with liquid swine waste. (Thesis). University of North Carolina. Retrieved from https://cdr.lib.unc.edu/record/uuid:612a684e-41c1-464b-bc98-3b6b1ad16247

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

DeBerardinis, Jeffrey T. “Nitrogen mass balance for spray fields fertilized with liquid swine waste.” 2006. Thesis, University of North Carolina. Accessed January 20, 2021. https://cdr.lib.unc.edu/record/uuid:612a684e-41c1-464b-bc98-3b6b1ad16247.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

DeBerardinis, Jeffrey T. “Nitrogen mass balance for spray fields fertilized with liquid swine waste.” 2006. Web. 20 Jan 2021.

Vancouver:

DeBerardinis JT. Nitrogen mass balance for spray fields fertilized with liquid swine waste. [Internet] [Thesis]. University of North Carolina; 2006. [cited 2021 Jan 20]. Available from: https://cdr.lib.unc.edu/record/uuid:612a684e-41c1-464b-bc98-3b6b1ad16247.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

DeBerardinis JT. Nitrogen mass balance for spray fields fertilized with liquid swine waste. [Thesis]. University of North Carolina; 2006. Available from: https://cdr.lib.unc.edu/record/uuid:612a684e-41c1-464b-bc98-3b6b1ad16247

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

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Open Access Theses and Dissertations