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United States Department of Agriculture

Agricultural Research Service

Susan Spencer
U.S. Dairy Forage Research Center
Microbiologist

Phone: n/a

1925 LINDEN DR W
MADISON, WI, 53706


Publications (Clicking on the reprint icon Reprint Icon will take you to the publication reprint.)
Application of dairy slurry on alfalfa fields, and subsequent effects on nutritive value and silage fermentation characteristics of the harvested forage - (Popular Publication)
Coblentz, W.K., Muck, R.E., Borchardt, M.A., Spencer, S.K., Jokela, W.E., Bertram, M.G., Coffey, K.P. 2014. Application of dairy slurry on alfalfa fields, and subsequent effects on nutritive value and silage fermentation characteristics of the harvested forage. Popular Publication. Midwest Forage Assn. Project Reports 2013.
Effects of dairy slurry on silage fermentation characteristics and nutritive value of alfalfa Reprint Icon - (Peer Reviewed Journal)
Coblentz, W.K., Muck, R.E., Borchardt, M.A., Spencer, S.K., Jokela, W.E., Bertram, M.G., Coffey, K.P. 2014. Effects of dairy slurry on silage fermentation characteristics and nutritive value of alfalfa. Journal of Dairy Science. 97:7197-7211.
Simultaneous concentration of bovine viruses and agricultural zoonotic bacteria from water using sodocalcic glass wool filters - (Peer Reviewed Journal) - (04-Jul-14)
Human and bovine viruses in the Milwaukee river watershed: hydrologically relevant representation and relations with environmental variables - (Peer Reviewed Journal)
Corsi, S.R., Borchardt, M.A., Spencer, S.K., Hughes, P.E., Baldwin, A.K. 2014. Human and bovine viruses in the Milwaukee river watershed: hydrologically relevant representation and relations with environmental variables. Science of the Total Environment. 490:849-860.
Surface runoff from manured cropping systems assessed by the paired-watershed method, part 2: pathogen transport - (Abstract Only)
Borchardt, M.A., Spencer, S.K., Jokela, W.E. 2014. Surface runoff from manured cropping systems assessed by the paired-watershed method, part 2: pathogen transport. American Water Resources Association Conference Proceedings. March 13-14, 2014.
Effects of precipitation events on virus presence in groundwater - (Abstract Only)
Gotkowitz, M.B., Bradbury, K.R., Borchardt, M.A., Spencer, S.K., Krause, J.J. 2014. Effects of precipitation events on virus presence in groundwater. American Water Resources Association Conference Proceedings. March 13-14, 2014.
Characterization of preferential flow pathways in a siliciclastic aquifer system using human enteric viruses and groundwater geochemistry - (Abstract Only)
Gellasch, C.A., Borchardt, M.A., Bradbury, K.R., Spencer, S.K., Bahr, J.M. 2014. Characterization of preferential flow pathways in a siliciclastic aquifer system using human enteric viruses and groundwater geochemistry. Geological Society of America Meeting. March 23-25, 2014.
Accumulation and inactivation of avian influenza virus by the filter feeding invertebrate daphnia magna - (Peer Reviewed Journal)
Meixell, B.W., Borchardt, M.A., Spencer, S.K. 2013. Accumulation and inactivation of avian influenza virus by the filter feeding invertebrate daphnia magna. Applied and Environmental Microbiology. 79:7249-7255.
Ranking filter methods for concentrating pathogens in lake water Reprint Icon - (Peer Reviewed Journal)
Borchardt, M.A., Kieke, B.A., Spencer, S.K. 2013. Ranking filter methods for concentrating pathogens in lake water. Applied and Environmental Microbiology. 79:5418-5419.
Source and transport of human enteric viruses in deep municipal water supply wells Reprint Icon - (Peer Reviewed Journal)
Bradbury, K.R., Borchardt, M.A., Gotkowitz, M., Spencer, S.K., Zhu, J., Hunt, R.J. 2013. Source and transport of human enteric viruses in deep municipal water supply wells. Journal of Environmental Science and Technology. 47:4096-4103.
Inactivation of dairy manure-borne pathogens by anaerobic digestion - (Abstract Only)
Borchardt, M.A., Spencer, S.K., Larson, R.A., Alkan-Ozkaynak, A. 2013. Inactivation of dairy manure-borne pathogens by anaerobic digestion. Meeting Abstract. May 18-21, 2013.
Improved HF183 reverse primer and probe for greater analytical sensitivity of human bacteroides in the environment - (Abstract Only)
Millen, H.T., Spencer, S.K., Shanks, O.C., Green, H.C., Haugland, R.A., Gonnering, J.C., Borchardt, M.A. 2013. Improved HF183 reverse primer and probe for greater analytical sensitivity of human bacteroides in the environment. Meeting Abstract. May 18-21, 2013.
Risk of viral acute gastrointestinal illness from non-disinfected drinking water distribution systems - (Peer Reviewed Journal)
Lambertini, E., Borchardt, M.A., Kieke, B.A., Spencer, S.K., Loge, F.J. 2012. Risk of viral acute gastrointestinal illness from non-disinfected drinking water distribution systems. Environmental Science and Technology. 46:9299-9307.
Viruses in non-disinfected drinking water from municipal wells are related to community rates of acute gastrointestinal illness - (Peer Reviewed Journal)
Borchardt, M.A., Spencer, S.K., Kieke, B.A., Lambertini, E., Loge, F.J. 2012. Viruses in non-disinfected drinking water from municipal wells are related to community rates of acute gastrointestinal illness. Proceedings of the National Academy of Sciences. 120:1272-1279.
Comparative effectiveness of membrane bioreactors, conventional secondary treatment, and disinfection to remove microorganisms from municipal wastewaters - (Peer Reviewed Journal)
Francy, D.S., Stelzer, E.A., Bushon, R.N., Brady, A.M., Williston, A.G., Riddell, K.R., Borchardt, M.A., Spencer, S.K., Gellner, T.M. 2012. Comparative effectiveness of membrane bioreactors, conventional secondary treatment, and disinfection to remove microorganisms from municipal wastewaters. Water Research. 46:4164-4178.
Measuring and mitigating inhibition during real-time, quantitative PCR analysis of viral nucleic acid extracts from large-volume environmental water samples - (Peer Reviewed Journal)
Gibson, K.E., Schwab, K.J., Spencer, S.K., Borchardt, M.A. 2012. Measuring and mitigating inhibition during real-time, quantitative PCR analysis of viral nucleic acid extracts from large-volume environmental water samples. Water Research. 46:4281-4291.
Pathogen transport in surface runoff from manured agricultural fields - (Abstract Only)
Borchardt, M.A., Jokela, W.E., Spencer, S.K. 2012. Pathogen transport in surface runoff from manured agricultural fields. Meeting Abstract. September 23-26, 2012.
Glass wool filters for concentrating waterborne viruses and agricultural zoonotic pathogens - (Peer Reviewed Journal)
Millen, H., Gonnering, J., Berg, R., Spencer, S.K., Jokela, W.E., Pearce, J.M., Borchardt, J.S., Borchardt, M.A. 2012. Glass wool filters for concentrating waterborne viruses and agricultural zoonotic pathogens. Journal of Visualized Experiments. DOI: 10.3791/3930.
Viruses in non-disinfected groundwater used for municipal drinking water and the incidence of acute gastrointestinal illness - (Abstract Only) - (09-Sep-11)
Human and bovine viruses in urban and rural streams: Hydrologic and season patterns of wastewater influence - (Abstract Only) - (09-Sep-11)
Hydrogeological and statistical evidence for wide-spread enteric virus contamination of deep municipal wells - (Abstract Only) - (09-Sep-11)
Quantifying viruses and bacteria in wastewater - results, quality control, and interpretation methods - (Government Publication)
Francy, D.S., Stelzer, E.A., Bushon, R.N., Brady, A.M., Mailot, B.E., Spencer, S.K., Borchardt, M.A., Elber, A.G., Riddell, K.R., Gellner, T.M. 2011. Quantifying viruses and bacteria in wastewater - results, quality control, and interpretation methods. United States Geological Survey Technical Report. 5150, 44p.
Virus contamination from operation and maintenance practices in small drinking water distribution systems - (Peer Reviewed Journal)
Lambertini, E., Spencer, S.K., Kieke, B.A., Loge, F.J., Borchardt, M.A. 2011. Virus contamination from operation and maintenance practices in small drinking water distribution systems. Journal of Water and Health. 9:799-812.
Method 1615 measurment of Enterovirus and Norovirus occurrence in water by culture and qRT-PCR - (Government Publication)
Fout, G.S., Brinkman, N.E., Cashdollar, J.L., Griffin, S.M., Mcminn, B.R., Rhodes, E.R., Varughese, E.A., Grimm, A.G., Spencer, S.K., Borchardt, M.A. 2011. Method 1615 measurment of Enterovirus and Norovirus occurrence in water by culture and qRT-PCR. Government Publication/Report. EPA/600/R-10/181.
Pathogen losses in surface runoff from dairy manure applied to corn fields - (Abstract Only)
Borchardt, M.A., Jokela, W.E., Spencer, S.K. 2011. Pathogen losses in surface runoff from dairy manure applied to corn fields. American Society for Microbiology. Abstract #1436.
Human viruses as tracers of wastewater pathways into deep municipal wells - (Government Publication)
Bradbury, K.R., Borchardt, M.A., Gotkowski, M., Spencer, S.K. 2010. Human viruses as tracers of wastewater pathways into deep municipal wells. Government Publication/Report. Final Report to the Wisconsin Department of Natural Resources, Open-File Report 2010-04A, 47p.
Presence of human enteric viruses in deep urban groundwater - (Abstract Only)
Bradbury, K., Borchardt, M.A., Gotkowitz, M.B., Hunt, R., Spencer, S.K. 2010. Presence of human enteric viruses in deep urban groundwater. Meeting Abstract. Vol. 42, No. 5, page 378.
Groundwater sampling methods using glass wool filtration to trace human enteric viruses in Madison, Wisconsin - (Abstract Only)
Gellasch, C.A., Bahr, J.M., Borchardt, M.A., Bradbury, K.E., Chase, P.M., Spencer, S.K. 2010. Groundwater sampling methods using glass wool filtration to trace human enteric viruses in Madison, Wisconsin. Geological Society of America Meeting. Vol. 42, No. 5, p. 603.
Assessment of Sewer Source Contamination of Drinking Water Wells Using Tracers and Human Enteric Viruses - (Peer Reviewed Journal)
Hunt, R.J., Borchardt, M.A., Richards, K.D., Spencer, S.K. 2010. Assessment of Sewer Source Contamination of Drinking Water Wells Using Tracers and Human Enteric Viruses. Environmental Science and Technology. Environ. Sci. Technol.44:7956-7963..
Last Modified: 10/24/2014
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