Alexandria K Graves

Works (14)

Updated: April 5th, 2024 05:20

2016 journal article

Fecal contamination and Microcystis in drinking-water sources of rural Cambodia using PCR and culture-based methods

JOURNAL OF WATER SANITATION AND HYGIENE FOR DEVELOPMENT, 6(3), 353–361.

By: A. Matteson n, A. Graves n, A. Hall*, D. Kuy* & M. Polizzotto n

author keywords: Bacteroides; Cambodia; coliforms; Enterococcus; fecal pollution; water
TL;DR: The study results show that many potential drinking-water sources in Cambodia contain harmful bacterial and algal contaminants, and care should be taken when selecting and monitoring water options. (via Semantic Scholar)
UN Sustainable Development Goal Categories
6. Clean Water and Sanitation (Web of Science; OpenAlex)
13. Climate Action (Web of Science)
15. Life on Land (Web of Science)
Source: Web Of Science
Added: August 6, 2018

2014 journal article

Transport of E. coli in a sandy soil as impacted by depth to water table

Journal of Environmental Health, 76(6), 92–100.

By: C. Stall, A. Amoozegar , D. Lindbo, A. Graves & D. Rashash

Source: NC State University Libraries
Added: August 6, 2018

2012 journal article

Relationships Between Nitrogen Transformation Rates and Gene Abundance in a Riparian Buffer Soil

Environmental Management, 50(5), 861–874.

By: L. Wu  n, D. Osmond n , A. Graves n, M. Burchell n  & O. Duckworth n 

Contributors: L. Wu  n, D. Osmond n , A. Graves n, M. Burchell n  & O. Duckworth n 

author keywords: Riparian buffer; Nitrogen; Denitrification; Quantitative PCR; Nitrous oxide; Nitrate
MeSH headings : Denitrification; Nitrates / analysis; Nitrates / metabolism; Nitrogen / analysis; Nitrogen / metabolism; Nitrous Oxide / analysis; Nitrous Oxide / metabolism; Polymerase Chain Reaction; Soil / analysis
TL;DR: The results suggest that low-molecular mass organic species are more effective at promoting nitrogen transformations than large biopolymers or humic substances, and also help to link genetic potential to chemical reactivity. (via Semantic Scholar)
UN Sustainable Development Goal Categories
2. Zero Hunger (OpenAlex)
Sources: Web Of Science, ORCID, NC State University Libraries, Crossref
Added: August 6, 2018

2011 journal article

Bacterial community composition in low-flowing river water with different sources of pollutants

FEMS MICROBIOLOGY ECOLOGY, 79(1), 155–166.

By: A. Ibekwe *, M. Leddy *, R. Bold* & A. Graves n

author keywords: microbial diversity; watershed; nonpoint source pollutants; terminal restriction fragment length polymorphism; temporal variations; spatial variation
MeSH headings : Bacteria / classification; Bacteria / genetics; Bacteria / growth & development; Environmental Monitoring; Gene Library; Genes, rRNA; Humans; Phylogeny; Polymorphism, Restriction Fragment Length; RNA, Ribosomal, 16S / genetics; Rivers / chemistry; Rivers / microbiology; Water Pollutants, Chemical / analysis
TL;DR: Overall results, using the b diversity measures UniFrac, coupled with PCoA, showed that bacterial contamination of the low-flowing river was not significantly different between agricultural activities and urban runoff. (via Semantic Scholar)
UN Sustainable Development Goal Categories
6. Clean Water and Sanitation (OpenAlex)
15. Life on Land (Web of Science)
Source: Web Of Science
Added: August 6, 2018

2011 journal article

Distribution of ten antibiotic resistance genes in E. coli isolates from swine manure, lagoon effluent and soil collected from a lagoon waste application field

FOLIA MICROBIOLOGICA, 56(2), 131–137.

By: A. Graves n, L. Liwimbi, D. Israel n, E. Heugten  n, B. Robinson n, C. Cahoon n, J. Lubbers n

MeSH headings : Animals; Drug Resistance, Bacterial; Escherichia coli / drug effects; Escherichia coli / genetics; Escherichia coli / isolation & purification; Escherichia coli Proteins / genetics; Genes, Bacterial; Manure / microbiology; North Carolina; Seasons; Soil Microbiology; Swine; Water Microbiology
TL;DR: Seasonal variables seem to impact the recovery isolates with ARGs; however, ARG distribution may be associated with mobile genetic elements or a reflection of the initial numbers of resistant isolates shed by the animals. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2011 journal article

Exploring fecal indicator bacteria in a constructed stormwater wetland

WATER SCIENCE AND TECHNOLOGY, 63(11), 2707–2712.

By: J. Hathaway n, W. Hunt n, A. Graves n, K. Bass n & A. Caldwell n

author keywords: fecal coliform; microbe; sediment; stormwater; wetland
MeSH headings : Escherichia coli / isolation & purification; Feces / microbiology; Humans; Soil Microbiology; Waste Disposal, Fluid; Water Microbiology; Wetlands
TL;DR: Indicator bacteria concentrations in both the water and sediment of a CSW were evaluated and suggested that fecal coliform concentrations in stormwater runoff decrease through the system, with relatively consistent concentrations noted throughout the second half of the wetland. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2011 journal article

Field Evaluation of Bioretention Indicator Bacteria Sequestration in Wilmington, North Carolina

JOURNAL OF ENVIRONMENTAL ENGINEERING, 137(12), 1103–1113.

By: J. Hathaway n, W. Hunt n, A. Graves n & J. Wright  n

author keywords: Storm water; Bioretention; Biofiltration; Indicator bacteria; E. coli; Enterococci
TL;DR: Two adjacent bioretention areas in Wilmington, North Carolina, were studied and it was found that the systems performed differently for indicator bacteria on the basis of multiple performance evaluation metrics. (via Semantic Scholar)
UN Sustainable Development Goal Categories
6. Clean Water and Sanitation (Web of Science; OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2011 journal article

Genetic Diversity and Antimicrobial Resistance of Escherichia coli from Human and Animal Sources Uncovers Multiple Resistances from Human Sources

PLOS ONE, 6(6).

By: A. Ibekwe *, S. Murinda * & A. Graves n

MeSH headings : Animals; Anti-Infective Agents / pharmacology; Drug Resistance, Bacterial / genetics; Drug Resistance, Multiple / genetics; Escherichia coli / drug effects; Escherichia coli / genetics; Escherichia coli / isolation & purification; Food Microbiology; Genetic Variation; Geologic Sediments / microbiology; Housing; Humans; Phenotype; Rivers / microbiology
TL;DR: The occurrence of a greater number of E. coli with multiple antibiotic resistances from urban runoff sources than agricultural sources in this watershed provides useful evidence in planning strategies for water quality management and public health protection. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2011 journal article

Microbiological Evaluation of Water Quality from Urban Watersheds for Domestic Water Supply Improvement

INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH, 8(12), 4460–4476.

By: A. Ibekwe *, S. Murinda * & A. Graves n

author keywords: pathogenic Escherichia coli; indicator bacteria; surface water; sediment; contamination; watershed
MeSH headings : Colony Count, Microbial; Electrophoresis, Gel, Pulsed-Field; Enterobacteriaceae / isolation & purification; Escherichia coli / isolation & purification; Microbial Sensitivity Tests; Urbanization; Water Microbiology; Water Supply
TL;DR: The authors' data showed multiple strains of E. coli without virulence attributes, but with high distribution of resistant phenotypes, which is a matter of great concern due to possible transfer of resistant genes from nonpathogenic to pathogenic strains that may result in increased duration and severity of morbidity. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2011 journal article

Variations of indicator bacteria in a large urban watershed

Transactions of the ASABE, 54(6), 2227–2236.

By: A. Ibekwe, S. Lesch, R. Bold, M. Leddy & A. Graves*

UN Sustainable Development Goal Categories
6. Clean Water and Sanitation (OpenAlex)
Source: NC State University Libraries
Added: August 6, 2018

2010 journal article

Growth performance and antibiotic tolerance patterns of nursery and finishing pigs fed growth-promoting levels of antibiotics

LIVESTOCK SCIENCE, 136(2-3), 184–191.

By: J. Holt n, E. Heugten  n, A. Graves n, M. See  n & W. Morrow n

Contributors: J. Holt n, E. Van Heugten  n, A. Graves n, M. See  n & W. Morrow n

author keywords: Antibiotics; Growth performance; Swine
TL;DR: The tolerance of bacteria to antibiotics wasuctuated over time andpersisted regardless of the use of antibiotic growth promoters, and the levels ofantibioticgrowthpromoters had little impact on growth performance and performanceLean, isolated facilities with high labor inputs. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: August 6, 2018

2009 journal article

Characterization of enterococci populations collected from a subsurface flow constructed wetland

JOURNAL OF APPLIED MICROBIOLOGY, 108(4), 1226–1234.

By: A. Graves n & R. Weaver*

author keywords: Biolog; constructed wetlands; domestic wastewater; enterococci; wastewater treatment
MeSH headings : Bacterial Load; Enterococcus / isolation & purification; Enterococcus / physiology; Phenotype; Sewage / microbiology; Waste Disposal, Fluid / methods; Water / chemistry; Water Microbiology; Wetlands
TL;DR: The aim of this study was to identify and characterize the population of Enterococcus sp. (via Semantic Scholar)
UN Sustainable Development Goal Categories
6. Clean Water and Sanitation (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2007 journal article

Characterization of enterococci populations in livestock manure using BIOLOG

MICROBIOLOGICAL RESEARCH, 164(3), 260–266.

By: A. Graves n, R. Weaver* & J. Entry *

author keywords: BIOLOG; Enterococcus; Livestock; Manure
MeSH headings : Animals; Animals, Domestic / microbiology; Bacterial Typing Techniques; Biodiversity; Cattle; Enterococcus / classification; Enterococcus / isolation & purification; Enterococcus / metabolism; Horses; Manure / microbiology; Sheep
TL;DR: The BIOLOG system was used to generate knowledge of enterococci populations found in fresh and dry manure of livestock and indicated that there were some significant differences among the frequency of E. casseliflavus and E. mundtii in cattle and sheep, but not horse. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2007 journal article

Microbial source tracking in a rural watershed dominated by cattle

WATER RESEARCH, 41(16), 3729–3739.

By: A. Graves n, C. Hayedorn, A. Brooks *, R. Hagedorn * & E. Martin*

author keywords: antibiotic resistance analysis; microbial source tracking; cattle; E. coli; fecal pollution
MeSH headings : Animals; Animals, Domestic; Bacteria / isolation & purification; Cattle; Drug Resistance, Microbial; Fresh Water / microbiology; Rural Health; Seasons; Sewage / microbiology; Virginia; Water Pollutants / analysis; Water Pollution / analysis
TL;DR: This project demonstrated that a host-origin library, based on a phenotypic method, could be developed for a well-defined watershed and was both representative of the sources in the watershed and performed reasonably well against a challenge set. (via Semantic Scholar)
UN Sustainable Development Goal Categories
6. Clean Water and Sanitation (Web of Science; OpenAlex)
Source: Web Of Science
Added: August 6, 2018

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