Alexandria Graves

Dr. Alexandria Graves

CALS Interim Director for the Office of Diversity Affairs
Associate Professor, Soil and Environmental Microbiology

Patterson Hall 104, Box 7601
North Carolina State University
Raleigh, North Carolina 27695-7601

Office Phone: 919.515.2710

Specialty: Soil and Environmental Microbiology

Antibiotic resistance continues to pose a serious threat to human health; further of particular concern is the potential impact of agricultural practices on transmission of antibiotic resistance (genes and/or organisms) to humans through food production and consumption. Indeed, agricultural and environmental reservoirs serve as potential sources of antibiotic resistance genes of clinical significance. Research efforts focus on identifying agricultural, ecological, and waste management factors that impact the maintenance and dissemination of antibiotic resistance (genes and/or organisms) in soil.



Research – Refereed Journals

  • Matteson, R. A.K. Graves, A. M. Hall, D. Kuy, M. L. Polizzotto. 2016.  Fecal contamination and Microcystis in drinking-water sources of rural Cambodia using PCR and culture-based methods. J Water Sanit Hyg Dev.  Available Online 30 June 2016. DOI: 10.2166/washdev.2016.136
  • Stall, C., A. Amoozegar, D. Lindbo, A.K. Graves, and D. Rashash. 2015. Transport of coli in a sandy soil as impacted by depth of water table. J. Environ. Health. J Environ Health. 2015 Jan-Feb; 76(6):92-100.
  • Duckworth, O., D. Osmond, A.K. Graves, M. Burchell and L. Wu. 2012. Relationships between nitrogen transformation rates and gene abundance in riparian buffer soil. Environ. Management. 50(5):861-874.
  • Ibekwe, A.M., M. B. Leddy, R.M. Bold and A.K. Graves. 2012. Bacterial community composition in low-flowing river water with different sources of pollutants. FEMS Microbiol. Ecol. 79:155–166.
  • Ibekwe, A.M., S.E. Murinda and A.K. Graves. 2011. Microbiological evaluation of water quality from urban watersheds for domestic water supply improvement. Int. J. Environ. Res. Public Health. 8: 4460-4476.
  • Ibekwe, A.M., S.M. Lesch, R. M. Bold, M.B. Leddy and A.K. Graves. 2011. Variations of indicator bacteria in a large urban watershed. Transactions of the ASABE. 54(6): 2227-2236.
  • Hathaway, J.M., W.F. Hunt, A.K. Graves and J.D. Wright. 2011. Field evaluation of bioretention indicator bacteria sequestration in Wilmington, NC. J. Environ. Engineering 137(12): 1103-1113.
  • Ibekwe, M.A, S.E. Murinda and A.K. Graves. 2011. Genetic diversity and antimicrobial resistance of E. coli from human and animal sources uncovers multiple resistances from human sources. PLoS ONE 6(6): e20819. doi:10.1371/journal.pone.0020819.
  • Graves, A.K. 2011. Food safety and implications for microbial source tracking. In C. Hagedorn, A. Blanch and V.J. Harwood (eds.) Microbial Source Tracking: Methods, Applications and Case Studies. pp. 585-607. Springer Publishers, New York, NY.
  • Graves, A.K., L. Liwimbi, D.W. Israel, E. van Heugten, B. Robinson, C.W. Cahoon and J. F. Lubbers. 2011. 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 Microbiol. 56 (2):131-137.
  • Hathaway, J.M., W.F. Hunt, A.K. Graves, K.L. Bass, and A.E. Caldwell. 2011. Exploring fecal indicator bacteria in a constructed stormwater wetland. W. Sci. Technol. 63 (11): 2707-2712.
  • J.P. Holt, E. van Heugten, A.K. Graves, M.T. See, W.E.M. Morrow. 2011. Growth performance and antibiotic tolerance patterns of nursery and finishing pigs fed growth-promoting levels of antibiotics. Livestock Sci. 136 (2): 184-191.
  • Graves, A.K. and C. Hagedorn. 2010. Identifying sources of fecal pollution in water with antibiotic resistance patterns. Environ. Res. J. 5(6): 749-774.
  • Graves, A.K. and R.W. Weaver. 2010. Characterization of Enterococci populations collected from a subsurface flow constructed wetland. J. Applied. Microbiol. 108 (4):1226-1234.
  • Liwimbi, L., A.K. Graves, D.W. Israel, E. van Heugten, B. Robinson, C.W. Cahoon and J.F. Lubbers. .2010. Microbial source tracking in a watershed dominated by swine. WATER (3), 587-604.
  • Graves, A.K. and C. Hagedorn. 2009. Antibiotic resistance as a method for determining sources of fecal pollution in water. In Frank Columbus (ed.), Antibiotic Resistance: Causes and Risk Factors, Mechanisms and Alternatives. pp. 283-311. Hauppauge, NY: Nova Science Publishers.
  • Graves, A.K., R.W. Weaver and J. Entry. 2009. Characterization of enterococci populations in livestock manure using BIOLOG. Microbiol. Res. 64(3):260-6.
  • Graves, A.K., C. Hagedorn, A. Brooks, R.L. Hagedorn and E. Martin. 2007. Microbial source tracking in a rural watershed dominated by cattle. Water Res. 41(16): 3729-3739.
  • Weaver, R., J. Entry, and A. K. Graves. 2005. Numbers of Enterococci and E. coli in fresh and dry cattle, horse, and sheep manure. Can. J. Microbiol. 51(10): 847-851.
  • Booth, A.M., C. Hagedorn, A.K. Graves, S.C. Hagedorn, and K.H. Mentz. 2003. Sources of Fecal Pollution in Virginias Blackwater. J. Environ. Engineering. 129 (6), 547-552.
  • Hagedorn, C., J.B. Crozier, K.A. Mentz, A.M. Booth, A.K. Graves, N.J. Nelson, and R.B. Reneau, Jr. 2003. Carbon Source Utilization Profiles as a Method to Identify Sources of Fecal Pollution in Water. J. Appli. Micro. 94 (5), 792-799.
  • Graves, A.K., C. Hagedorn, A. Teetor, M. Mahal, A.M. Bowman, and R.B. Reneau, Jr. 2002. Antibiotic Resistance Profiles to Determine Sources of Fecal Contamination in a Rural Virginia Watershed. J. Environ. Qual. 31:1300-1308.

Peer Reviewed Proceedings

  • Hagedorn, C., A. K. Graves, and R. B. Reneau, Jr. 1999. Developing Methods for Bacterial Source Tracking. In (R.W. Seabloom, ed.) Proceedings, 10th Northwest On-site Wastewater Treatment Conference. Pp. 61-70. Univ. of Washington, Seattle.
  • Hagedorn, C., A.K. Graves, and R. B. Reneau, Jr. 1999. Identifying Sources of Fecal Pollution in a Rural Virginia Watershed. Proceedings, 8th Annual Conference, National On-site Wastewater Recycling Association. Paper D1, Jekyll Island, GA.