Open Access. Powered by Scholars. Published by Universities.®
Ecology and Evolutionary Biology Commons™
Open Access. Powered by Scholars. Published by Universities.®
- Institution
- Publication
- Publication Type
Articles 1 - 7 of 7
Full-Text Articles in Ecology and Evolutionary Biology
Effects Of Light, Nutrients, And Salts On Microbial Biofilm Productivity And Detrital Processing In Aquatic Mesocosms, Bethanie Brooke Howard-Parker
Effects Of Light, Nutrients, And Salts On Microbial Biofilm Productivity And Detrital Processing In Aquatic Mesocosms, Bethanie Brooke Howard-Parker
Graduate Theses and Dissertations
Anthropogenic activities associated with urbanization, agriculture, and resource extraction continue to increase to support increasing needs of the growing population. These activities increase the amounts of pollutants entering freshwater streams and put aquatic ecosystems at structural and functional risk. Aquatic microbes play an important role in detrital processing in streams as a key linkage in moving carbon from detrital stocks into aquatic food webs. My research investigates the effects of light, nutrients, and salts on detrital microbes and decomposition in freshwaters using a mesocosm approach. In chapter one, I modified a current priming effect (PE) hypothesis model to include light …
Microbial Community Response To Light And Heavy Crude Oil In Freshwater Systems, Timothy M. Butler
Microbial Community Response To Light And Heavy Crude Oil In Freshwater Systems, Timothy M. Butler
Dissertations, Master's Theses and Master's Reports
With increased demand for oil, there is an increased risk for oil spills in many environments. A number of pipelines transport oil near or across freshwater systems including the Great Lakes. Microbes are capable of breaking down oil and have thus been proposed as tools for oil spill response through bioremediation. There is a need to understand the microbial response to diverse oil types in freshwater environments due to the lack of research into this topic. This study’s main objectives are to understand how the freshwater microbial communities respond to oil, and how the bacterial communities may respond to different …
Urea As An Effective Nitrogen Source For Cyanobacteria, Kevin J. Erratt
Urea As An Effective Nitrogen Source For Cyanobacteria, Kevin J. Erratt
Electronic Thesis and Dissertation Repository
Urea use has grown substantially in the past half-century, with urea now accounting for > 50% of nitrogen fertilizer applications worldwide. The shift from inorganic nitrogen fertilizers to urea-based sources has coincided with the reappearance of cyanobacteria blooms in freshwaters. Here, we examined urea as a nitrogen source for three bloom-forming cyanobacteria species. We found that (1) urea was consumed more rapidly relative to inorganic nitrogen substrates, suggesting that cyanobacteria exhibit a preference for urea; (2) urea was consumed in excess of cellular requirements; and (3) urea may offer cyanobacteria a competitive edge over eukaryotic algae by enhancing light absorption capabilities. …
Freshwater Metaviromics And Bacteriophages: A Current Assessment Of The State Of The Art In Relation To Bioinformatic Challenges, Katherine Bruder, Kema Malki, Alexandria Cooper, Emily Sible, Jason W. Shapiro, Siobhan C. Watkins, Catherine Putonti
Freshwater Metaviromics And Bacteriophages: A Current Assessment Of The State Of The Art In Relation To Bioinformatic Challenges, Katherine Bruder, Kema Malki, Alexandria Cooper, Emily Sible, Jason W. Shapiro, Siobhan C. Watkins, Catherine Putonti
Catherine Putonti
Advances in bioinformatics and sequencing technologies have allowed for the analysis of complex microbial communities at an unprecedented rate. While much focus is often placed on the cellular members of these communities, viruses play a pivotal role, particularly bacteria-infecting viruses (bacteriophages); phages mediate global biogeochemical processes and drive microbial evolution through bacterial grazing and horizontal gene transfer. Despite their importance and ubiquity in nature, very little is known about the diversity and structure of viral communities. Though the need for culture-based methods for viral identification has been somewhat circumvented through metagenomic techniques, the analysis of metaviromic data is marred with …
18s Rdna Dataset Profiling Microeukaryotic Populations Within Chicago Area Nearshore Waters, Daniel Searle, Emily Sible, Alexandria Cooper, Catherine Putonti
18s Rdna Dataset Profiling Microeukaryotic Populations Within Chicago Area Nearshore Waters, Daniel Searle, Emily Sible, Alexandria Cooper, Catherine Putonti
Catherine Putonti
Despite their critical role in the aquatic food web and nutrient cycling, microeukaryotes within freshwater environments are under-studied. Herein we present the first high-throughput molecular survey of microeukaryotes within Lake Michigan. Every two weeks from May 13 to August 5, 2014, we collected surface water samples from the nearshore waters of four Chicago area beaches: Gillson Park, Montrose Beach, 57th Street Beach, and Calumet Beach. Four biological replicates were collected for each sampling date and location, resulting in 112 samples. Eighty-nine of these samples were surveyed through targeted sequencing of the V7 and V8 regions of the 18S rDNA gene. …
Freshwater Metaviromics And Bacteriophages: A Current Assessment Of The State Of The Art In Relation To Bioinformatic Challenges, Katherine Bruder, Kema Malki, Alexandria Cooper, Emily Sible, Jason W. Shapiro, Siobhan C. Watkins, Catherine Putonti
Freshwater Metaviromics And Bacteriophages: A Current Assessment Of The State Of The Art In Relation To Bioinformatic Challenges, Katherine Bruder, Kema Malki, Alexandria Cooper, Emily Sible, Jason W. Shapiro, Siobhan C. Watkins, Catherine Putonti
Bioinformatics Faculty Publications
Advances in bioinformatics and sequencing technologies have allowed for the analysis of complex microbial communities at an unprecedented rate. While much focus is often placed on the cellular members of these communities, viruses play a pivotal role, particularly bacteria-infecting viruses (bacteriophages); phages mediate global biogeochemical processes and drive microbial evolution through bacterial grazing and horizontal gene transfer. Despite their importance and ubiquity in nature, very little is known about the diversity and structure of viral communities. Though the need for culture-based methods for viral identification has been somewhat circumvented through metagenomic techniques, the analysis of metaviromic data is marred with …
18s Rdna Dataset Profiling Microeukaryotic Populations Within Chicago Area Nearshore Waters, Daniel Searle, Emily Sible, Alexandria Cooper, Catherine Putonti
18s Rdna Dataset Profiling Microeukaryotic Populations Within Chicago Area Nearshore Waters, Daniel Searle, Emily Sible, Alexandria Cooper, Catherine Putonti
Bioinformatics Faculty Publications
Despite their critical role in the aquatic food web and nutrient cycling, microeukaryotes within freshwater environments are under-studied. Herein we present the first high-throughput molecular survey of microeukaryotes within Lake Michigan. Every two weeks from May 13 to August 5, 2014, we collected surface water samples from the nearshore waters of four Chicago area beaches: Gillson Park, Montrose Beach, 57th Street Beach, and Calumet Beach. Four biological replicates were collected for each sampling date and location, resulting in 112 samples. Eighty-nine of these samples were surveyed through targeted sequencing of the V7 and V8 regions of the 18S rDNA gene. …