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Topp, Edward, Ph.D.

Research Scientist

Contact Information:

1391 Sandford St
London, Ontario N5V 4T3
Telephone: 519-953-6717
Fax: 519-457-3997
Email: ed.topp@agr.gc.ca

Areas of Expertise:

  • hormones
  • escherichia coli
  • environment
  • antibiotics
  • swine
  • soils
  • poultry
  • water quality
  • biosolids
  • soybeans
  • corn
  • manure

Current Projects:

  • Assessment and management of biological and chemical contaminants carried in livestock and poultry manure. [GAPS]
  • Develop indicators to assess soil suitability to receive organic residues, based on soil nutrient characteristics, agronomic needs, and soil biological, chemical and physical quality.
  • Develop new and improved handling and application practices and technologies to enhance nutrient use efficiency and reduce the environmental and health risks from organic residues.
  • Develop new treatment technologies for organic wastes to enhance their economic value, conserve nitrogen and reduce phosphorus content, and minimize the environmental and health risks of the product.
  • Improved understanding of the forms and fates of phosphorus in composts and development of compost BMPs for horticultural crops [GAPS]
  • Increase understanding of the fundamental processes determining the on-farm fate of pathogens, organic contaminants, and nutrients.
  • National Water Quality Surveillance Program
  • Science-based use of municipal Biosolids for the protection of water quality
  • Understanding and managing preferential flow of liquid manure and biosolids to adjacent water [GAPS]

Research publications

2018

2016

2015

2014

2013

2012

2011

2010

2009

Other science related publications

2016

  • Fock-Chow-Tho, D., Topp, E., Ibeagha-Awemu, E.M., and Bissonnette, N. (2016). "Comparison of commercial DNA extraction and QPCR systems for a better sensitivity in detecting the causative paratuberculosis pathogen in dairy cow fecal samples.", 13th International Colloquium on Paratuberculosis, Nantes, France, 19-24 June, 2016, P-03.18, pp. 98. (Abstract)

2015

  • Chen, J., Nadya, S., Allen, K.J., Johnson, R., Ziebell, K.A., Bach, S., Topp, E., and Delaquis, P.J. (2015). "Phenotypic and genotypic characterization of antimicrobial resistance in Shiga toxin-producing Escherichia coli isolated from surface water in the Lower Mainland of British Columbia.", VTEC 2015, Boston, MA, USA, September 13-16, 2015. (Abstract)
  • Chen, J., Nadya, S., Allen, K.J., Johnson, R.P., Ziebell, K.A., Zeibell, K., Bach, S.J., Topp, E., and Delaquis, P.J. (2015). "Phenotypic and genotypic characterization of antimicrobial resistance in Shiga toxin-producing Escherichia coli isolated from surface water in the Lower Mainland of British Columbia.", VTEC 2015, Boston, MA, USA, September 13-16, 2015.
  • Delaquis, P.J., Bach, S.J., Bezanson, G.S., Topp, E., McKellar, R., Blais, B., and Peréz Rodriguez, F. (2015). Phenotypic diversity in Escherichia coli O157:H7 and its influence on survival in leafy vegetables. Research Project Annual Report. AAFC Project ID J-000132. (Report)
  • Delaquis, P.J., Nadya, S., Chen, J., Allen, K.J., Johnson, R., Ziebell, K.A., Bach, S., and Topp, E. (2015). "Prevalence, phenotypic and genotypic characteristics of Shiga toxin-producing Escherichia coli isolated from irrigation waters in a Canadian urban-agricultural landscape.", VTEC 2015, Boston, MA, USA, September 13-16, 2015. (Abstract)
  • Delaquis, P.J., Nadya, S., Chen, J., Allen, K.J., Johnson, R.P., Ziebell, K.A., Bach, S.J., and Topp, E. (2015). "Prevalence, phenotypic and genotypic characteristics of Shiga toxin-producing Escherichia coli isolated from irrigation waters in a Canadian urban-agricultural landscape.", VTEC 2015, Boston, MA, USA, September 13-16, 2015.
  • Diarra, M.S., Delaquis, P.J., Topp, E., McCallum, J.L., Ehret, D.L., Malouin, F., Gong, J., Brar, S.K., and Ross, K.A. (2015). Fruit Pomaces to Improve Immunity and Health of Organic Chickens. Project ID: AIP-CL02 – Organic Science Cluster II; Research Project Annual Report 2014-2015. AIP-CL02 – Organic Science Cluster II. (Report)
  • Fernando, E., Khan, I.U.H., Loewen, P., Lapen, D.R., Talbot, G., Topp, E., and Kumar, A. (2015). "Expressions and characterization of Acinetobacter spp. From Canadian Agricultural niches.", 65th Annual Canadian Society of Microbiologists Annual Conference, University of Regina, Regina, Saskatchewan, Canada, June 15-18, 2015, AE46PC. (Poster)
  • Fock-Chow-Tho, D., Topp, E., and Bissonnette, N. (2015). "Comparison of commercial DNA extraction and detection kits for a better sensitivity in detecting the causative paratuberculosis pathogen in dairy cow fecal samples.", 65th Annual Canadian Society of Microbiologists Annual Conference, University of Regina, Regina, Saskatchewan, Canada, June 15-18, 2015. (Poster)
  • Islam, R., Yin, X., Lepp, D., Topp, E., and Diarra, M.S. (2015). "Comparative genomics of Escherichia coli isolated from soil fertilized with litter of chicken fed with or without tetracycline.", 2015 International Association of Food Protection (IAFP), Portland, Oregon, USA, July 25-28, 2015. (Abstract)
  • Khan, I.U.H., Cloutier, M., Lapen, D.R., Topp, E., Wilkes, G.A., Jones, T., Brassard, J., Edge, T.A., and Talbot, G. (2015). "Quantitative detection and assessment of occurrence of human and animal viruses in agricultural aquatic environment.", 65th Annual Canadian Society of Microbiologists Annual Conference, University of Regina, Regina, Saskatchewan, Canada, June 15-18, 2015, S4-06. (Poster)
  • Khan, I.U.H., Cloutier, M., Lapen, D.R., Topp, E., Wilkes, G.A., Jones, T.H., Brassard, J., Edge, T.A., and Talbot, G. (2015). "Quantitative detection and assessment of occurrence of human and animal viruses in agricultural aquatic environment.", 65th Annual Canadian Society of Microbiologists Annual Conference, University of Regina, Regina, Saskatchewan, Canada, June 15-18, 2015. (Poster)
  • Khan, I.U.H., Topp, E., Chen, W., Lapen, D.R., Lévesque, C.A., Pintar, K.D.M., Tambong, J.T., Talbot, G., and Wilkes, G.A. (2015). "Assessment of Zoonotic Pathogens in Agroecosystem.", Biodiversity, Bioresources and Collection Science Day, Ottawa Research and Development Center, Agriculture and Agri-Food Canada, Ottawa, ON, Canada, December 1-2, 2015. (Presentation)
  • Kolotilin, I., Topp, E., Cox, E., Devriendt, B., Conrad, U., Joensuu, J.J., Stöger, E., Warzecha, H., McAllister, T.A., McLean, M.D, Hall, J.C., and Menassa, R. (2015). "Plant-based solutions for veterinary immunotherapeutics and prophylactics.", BMC Veterinary Research, 45(1), pp. 375. (Abstract)
  • Lévesque, C.A., Chen, W., Hambleton, S., Seifert, K.A., Adam, Z., Bilodeau, G.J., Cullis, J., Demeke, T., Dumonceaux, T.J., Gagnon, M., Graefenhan, T., Kawchuk, L.M., Khan, I.U.H., Lewis, C.T., Li, X., Links, M.G., Mimee, B., Rott, M., Tambong, J.T., Topp, E., Yu, Q., and Yuan, K. (2015). Project CRTI 09-462RD - Next generation sequencing, direct detection and genotyping of fungi, bacteria and nematodes in the agri-food system. DRDC-RDDC-2015-C148. Final Close-Out Report. (Report)
  • Talbot, G., Auffret, M., Gagnon, N., Masse, L., Barret, M., and Topp, E. (2015). "Relationship between methanogenesis and transcriptional activity of Methanoculleus spp. In stored dairy cow and swine manures.", 65th Annual Canadian Society of Microbiologists Annual Conference, University of Regina, Regina, Saskatchewan, Canada, June 15-18, 2015, Invited speaker – short talk SAE-04 in the Applied and Environmental Microbiology Section.
  • Talbot, G., Yin, X., Service, C., Ziebell, K.A., Gagnon, N., Auffret, M., Topp, E., and Diarra, M.S. (2015). "Characterization of ceftiofur-resistant Escherichia coli isolated from dairy cattle manures.", 65th Annual Canadian Society of Microbiologists Annual Conference, University of Regina, Regina, Saskatchewan, Canada, June 15-18, 2015, AE37. (Poster)

2014

  • Alexander, T.W., McAllister, T.A., Stanford, K.I.M., Reuter, T.R., and Topp, E. (2014). "Characterization of Shiga toxin-producing Escherichia coli isolated from feces of cattle in commercial feedlots.", ADSA-ASAS 2014 Joint Annual Meeting, Kansas City, MO, USA, July 20-24, 2014.
  • Barret, M., Auffret, M., Gagnon, N., Topp, E., Masse, L., Massé, D.I., and Talbot, G. (2014). "Influence of seasonal temperature variation on methanogen communities and methanogenesis in manure storage tanks.", XVIth International Congress of Virology - International Union of Microbiological Societies (IUMS 2014), July 27 - August 1, 2014, Montréal, Québec, Canada. (Poster)
  • Delaquis, P.J., Bach, S.J., Bezanson, G.S., Topp, E., McKellar, R., Blais, B., and Peréz Rodriguez, F. (2014). Phenotypic diversity in Escherichia coli O157:H7 and its influence on survival in leafy vegetables. Research Project Annual Report. AAFC Project ID J-000132. (Report)
  • Diarra, M.S., Diarrassouba, F., Proudfoot, J., Rempel, H., Topp, E., and Prichard, J. (2014). "Fate of antibiotic resistant enterococci during broiler chicken production.", 54th Annual Interscience Conference on Antimicrobial Agents and Chemotherapy (ICAAC) of American Society for Microbiology, Washington DC, USA, September 5-9, 2014.
  • Edge, T.A., Hill, S., Khan, I.U.H., Gannon, V.P.J., Crane, C., Collins, H.M., Johnson, R., Topp, E., and Roberts, C. (2014). "Microbial source tracking of pathogen and fecal pollution in shellfish harvesting areas in Atlantic Canada.", XVIth International Congress of Virology - International Union of Microbiological Societies (IUMS 2014), July 27 - August 1, 2014, Montréal, Québec, Canada, July 27-August 1, 2014.
  • Hartmann, A. and Topp, E. (2014). "Gènes de résistance aux antibiotiques dans les effluents d’origine agricole ou urbaine. Anses - Agence nationale de sécurité sanitaire de l’alimentation, de l’environnement et du travail.", Bulletin de veille scientifique n° 25, Santé /Environnement /Travail, Décembre 2014, pp. 30-34.
  • Khan, I.U.H., Cloutier, M., Topp, E., Lapen, D.R., Lévesque, C.A., Edge, T.A., Tambong, J.T., Talbot, G., and Wilkes, G.A. (2014). "Quantitative Detection and Identification of Arcobacter, Campylobacter and Helicobacter Species in a Canadian Agricultural Watershed.", XVIth International Congress of Virology - International Union of Microbiological Societies (IUMS 2014), July 27 - August 1, 2014, Montréal, Québec, Canada, July 27-August 1, 2014.
  • McKellar, R.C., Peréz Rodriguez, F., Harris, L.J., Moyne, A.-L., Blais, B., Topp, E., Bezanson, G.S., Bach, S.J., and Delaquis, P.J. (2014). "Evaluation of mathematical models to describe Escherichia coli O157:H7 decay on field-grown leafy vegetables.", Annual Meeting of the International Association for Food Protection (IAFP), Indianapolis, USA, August 3-6, 2014, Oral presentation. (Abstract)
  • Nadya, S., Allen, K.J., Johnson, R.P., Ziebell, K.A., Topp, E., Delaquis, P.J., and Bach, S.J. (2014). "A comparison of the presence of total Escherichia coli and Shiga-toxigenic E. coli in irrigation waters from an intensive agricultural region.", United Fresh 2014, Chicago, IL, USA, June 10-14, 2014, Abstract. (Poster)

2013

  • Delaquis, P.J., Bach, S.J., McKellar, R., Bezanson, G.S., and Topp, E. (2013). "Survival of six Shiga-toxigenic Escherichia coli serotypes in field lettuce.", 58th Annual Meeting of the International Association of Food Protection (IAFP 2013), Charlotte Convention Center, Charlotte, NC, USA, July 28-31, 2013. (Poster)
  • Fung, S., Rempel, H., Forgetta, V., Dewar, K., Topp, E., and Diarra, M.S. (2013). "Ceca Microbiome of Mature Broiler Chickens Fed with or without Salinomycin.", Keystone Symposia: The Gut Microbiome: The Effector/Regulatory Immune Network (B3), Taos, New Mexico, USA, February 10-15, 2013.
  • Fung, S., Rempel, H., Forgetta, V., Dewar, K., Topp, E., and Diarra, M.S. (2013). "Ceca Microbiome of Mature Broiler Chickens Fed with or without Salinomycin.", Keystone Symposium: The Gut Microbiome: The Effector/Regulatory Immune Network (B3), Taos, NM, USA, February 10-15, 2013.
  • Kaneza, C.A., Whiteduck-Leveillee, K., Whiteduck-Leveillee, J., Laprade, N., Topp, E., Guylaine, T., Lapen, D.R., Tambong, J.T., Lévesque, C.A., and Khan, I.U.H. (2013). "Identification and detection of Arcobacter spp. from water and fecal matter using genus- and species-specific PCR assays.", La Cité Collégiale, Ottawa, ON, Canada, April 26, 2013. (Poster)
  • Khan, I.U.H., Cloutier, M., Edge, T.A., Schellhorn, H.E., Gupta, R.S., Laprade, N., Topp, E., Guylaine, T., Lapen, D.R., Tambong, J.T., Wilkes, G.A., Nowak, E.K., and Hill, S. (2013). "A comparative study on the prevalence of thermophilic Campylobacter spp. In agricultural and recreational waters.", Canadian Society of Microbiologists (CSM) 63rd Annual Conference / Conférence annuelle de la Société Canadienne des Microbiologistes (SCM), Ottawa, ON, Canada, June 17-20, 2013.
  • Léveillée, K., Laprade, N., Léveillée, W.J., Topp, E., Lapen, D.R., Tambong, J.T., Talbot, G., Wilkes, G.A., and Khan, I.U.H. (2013). "Antimicrobial resistance profiling of Arcobacter butzleri isolates from faecal sources and an agricultural watershed.", 63rd Annual Conference of the Canadian Society of Microbiologists, Carleton University, Ottawa, ON, Canada, June 17-20, 2013, Abstract AE87.
  • Léveillée, W.J., Kaneza, C.A., Léveillée, K., Talbot, G., Topp, E., Lapen, D.R., Tambong, J.T., Lévesque, C.A., and Khan, I.U.H. (2013). "Optimization of a genus-specific PCR assay and restriction fragment length polymorphism (RFLP) analysis for rapid detection.", 63rd Annual Conference of the Canadian Society of Microbiologists, Carleton University, Ottawa, ON, Canada, June 17-20, 2013, Abstract AE88.
  • Léveillée, W.J., Kaneza, C.A., Léveillée, K., Talbot, G., Topp, E., Lapen, D.R., Tambong, J.T., Lévesque, C.A., and Khan, I.U.H. (2013). "Optimization of multiplex PCR assays for the detection of virulence genes in Arcobacter species isolated from fecal samples.", 63rd Annual Conference of the Canadian Society of Microbiologists, Carleton University, Ottawa, ON, Canada, June 17-20, 2013, Abstract AE86.
  • Simmons, K., Rempel, H., Block, G.S., Delaquis, P.J., Topp, E., and Diarra, M.S. (2013). "Identification and prevalence of Escherichia fergusonii in broiler chickens.", 58th Annual Meeting of the International Association of Food Protection (IAFP 2013), Charlotte Convention Center, Charlotte, NC, USA, July 28-31, 2013.
  • Simmons, K., Rempel, H., Block, G.S., Delaquis, P.J., Topp, E., and Diarra, M.S. (2013). "Identification and prevalence of Escherichia fergusonii in broiler chickens.", 102nd IAFP Meeting, Charlotte, North Carolina, USA, July 28-31, 2013.
  • Simmons, K., Rempel, H., Block, G.S., Topp, E., and Diarra, M.S. (2013). "Antimicrobial resistance in Escherichia fergusonii isolated from commercial broiler chickens.", 53rd Annual Interscience Conference on Antimicrobial Agents and Chemotherapy (ICAAC) of American Society for Microbiology, Denver, Colorado, USA, September 10-13, 2013, #1561. (Poster)
  • Topp, E., Lanthier, M., Diarra, M.S., Delaquis, P.J., Bach, S.J., McAllister, T.A., Sharma, R., Inglis, G.D., Masse, D., Bezanson, G.S., Bittman, S., Talbot, G., Masse, L., Brassard, J., Houde, A., Jones, T.H., Lapen, D.R., van Bochove, É., Gannon, V.P.J., Pintar, K.D.M., Masson, L., Neumann, N.F., and Koning, W. (2013). Assessment and management of on-farm fate of microbial and chemical contaminants carried in human and animal wastes used as organic fertilizers. Final Report SAGES #1462. (Report)
  • Whiteduck-Leveillee, J., Whiteduck-Leveillee, K., Kaneza, C.A., Cloutier, M., Laprade, N., Topp, E., Guylaine, T., Lapen, D.R., Tambong, J.T., Lévesque, C.A., and Khan, I.U.H. (2013). "Multiplex PCR assay for the detection and identification of virulent genes in Arcobacter species.", Canadian Society of Microbiologists (CSM) 63rd Annual Conference / Conférence annuelle de la Société Canadienne des Microbiologistes (SCM), Ottawa, ON, Canada, June 17-20, 2013.
  • Whiteduck-Leveillee, K., Whiteduck-Leveillee, J., Kaneza, C.A., Laprade, N., Topp, E., Guylaine, T., Lapen, D.R., Tambong, J.T., Lévesque, C.A., and Khan, I.U.H. (2013). "Development of genus-specific PCR assay for rapid identification of Arcobacter species: Optimization of PCR Primers and Conditions, and Restriction Pattern Analysis.", Canadian Society of Microbiologists (CSM) 63rd Annual Conference / Conférence annuelle de la Société Canadienne des Microbiologistes (SCM), Ottawa, ON, Canada, June 17-20, 2013.

2012

  • Diarra, M.S., Rempel, H., Bach, S.J., Harlton, C.E., Delaquis, P.J., Pritchard, J., Aslam, M.N., Leslie, M., and Topp, E. (2012). "Distribution of antibiotic resistance phenotypes and genotypes among Salmonella spp. Isolated from broiler chickens in British Columbia.", 101st Annual Meeting of the International Association of Food Protection (IAFP 2012), Rhode Island Convention Center, Providence, RI, USA, July 22-25, 2012, Poster ID# 2398. (Poster)
  • Diarra, M.S., Rempel, H., Champagne, J., Masson, L., and Topp, E. (2012). "Diversity of multiple antibiotic resistant enterococci from broiler chicken fed antimicrobial supplemented Diets.", 52nd Annual Interscience Conference on Antimicrobial Agents and Chemotherapy (ICAAC) of American Society for Microbiology, San Francisco, CA, USA, September 9-12, 2012, Poster # 1914. (Poster)
  • Marti, R., Fremaux, B., Edge, T.A., Topp, E., and Yost, C.K. (2012). "Les méthodes de typages des sources microbiennes au Canada.", Revue Techniques - Sciences - Méthodes (TSM), 2012(3), pp. 65-79.
  • Ruecker, N.J., Matsune, J.C., Lapen, D.R., Schreier, H., van Bochove, É., Koning, W., Edge, T.A., Topp, E., Sensen, C.W., Xiao, L., and Neumann, N.F. (2012). "Phylogenetic processes for analyzing the sequence diversity of Cryptosporidium from environmental samples used for source tracking.", American Water Works Association (AWWA) Water Quality Technology Conference and Exposition 2011, Phoenix Convention Center, Phoenix, Arizona, USA, November 13-17, 2011, pp. 2106-2117.
  • Talbot, G., Barret, M., Gagnon, N., Kalmokoff, M.L., Topp, E., and Neufeld, J.D. (2012). "Methanoculleus spp. Are major contributors to methane emissions in swine and dairy manure storage tanks.", Canadian Society of Microbiologists (CSM) 62nd Annual Conference / Conférence annuelle de la Société Canadienne des Microbiologistes (SCM), Vancouver, BC, Canada, June 20-23, 2012, Abstract AE076.
  • Topp, E. (2012). "Antibiotic resistance and the environment.", Antibiotic Resistance, whose responsibility is it?, Annual Ontario Public Health Convention, Toronto, ON, Canada, April 4, 2012. (Presentation)

2011

  • Barret, M., Gagnon, N., Morissette, B., Topp, E., Massé, D.I., Masse, L., and Talbot, G. (2011). "Methanogenesis in Swine Manure Storage Tanks: Towards the Identification of the Active Microorganisms.", 111th General Meeting of American Society for Microbiology (ASM2011), New Orleans, LA, USA, May 21-24, 2011.
  • Barret, M., Neufeld, J.D., Gagnon, N., Kalmokoff, M.L., Topp, E., Verastegui, Y., and Talbot, G. (2011). "Active methanogens in swine manure storage tanks revealed by stable isotope probing.", Canadian Society of Microbiologists (CSM) 61st Annual Conference / Conférence annuelle de la Société Canadienne des Microbiologistes (SCM), Memorial University of Newfoundland, St. John's, NL, Canada, June 20-23, 2011, Abstract AE74. (Abstract)
  • Barret, M., Neufeld, J.D., Gagnon, N., Kalmokoff, M.L., Topp, E., Verastegui, Y., and Talbot, G. (2011). "Identification of the active methanogens in swine manure storage tanks by DNA Stable Isotope Probing.", 1er Symposium du Centre de recherche et de développement sur le bovin laitier et le porc: Parlons science au CRDBLP! / 1st Symposium of the Dairy and Swine Research and Development Centre: Let’s Talk Science at the DSRDC!, Sherbrooke, QC, Canada, June 7, 2011.
  • Diarra, M.S., Vela, J., Hilderbrand, K., Metcalfe, A., Rempel, H., Bittman, S., and Topp, E. (2011). "Antibiotic resistance of Staphylococcus xylosus isolated from broiler barn bioaerosol.", 51st Annual Conference of the Pacific Northwest International Section (PNWIS) of the Air & Waste Management Association, Harrison, BC, Canada, November 8-11, 2011, Oral presentation.
  • Jokinen, C.C., Mutschall, S.K., Ross, S.L., Buchanan, C., Kindt, A., Koning, W., Miller, J.J., Edge, T.A., Topp, E., Thomas, J.E., Gannon, V.P.J., and Taboada, E.N. (2011). "Application of comparative genomics-based genotyping to the molecular epidemiology of Campylobacter jejuni from the Oldman River watershed in southern Alberta, Canada.", 15th Annual Federal Food Safety and Nutrition Research Meeting (FFSNRM), Ottawa, ON, Canada, December 6, 2011. (Presentation)
  • Jokinen, C.C., Mutschall, S.K., Ross, S.M., Buchanan, C., Kindt, A., Koning, W., Miller, J., Edge, T.A., Topp, E., Thomas, J., Gannon, V.P.J., and Taboada, E.N. (2011). "Application of comparative genomics-based genotyping to the molecular epidemiology of Campylobacter jejuni from the Oldman River watershed in southern Alberta, Canada.", 16th International Workshop on Campylobacter, Helicobacter, and Related Organisms (CHRO 2011), Vancouver, BC, Canada, August 28 -September 1, 2011. (Presentation)
  • Larney, F.J., Cessna, A.J., Kuchta, S.L., Hao, X., Entz, T., Topp, E., and McAllister, T.A. (2011). "Composting effects on antibiotics in feedlot manure.", Manure Management Update 2011, Lethbridge, AB, Canada, January 17, 2011, pp. 46-54.
  • Nangia, V., Sunohara, M., Topp, E., Gregorich, E.G., Gottschall, N., Drury, C.F., Toussef, M.A., and Lapen, D.R. (2011). "Assessing field-scale effects of controlled tile drainage on N mass balance from corn and soybean fields in Eastern Ontario, Canada.", 2011 ASA-CSSA-SSSA International Annual Meeting: Fundamental for life: soil, crop and environmental sciences, San Antonio, TX, USA, October 16-19, 2011.
  • Nangia, V., Sunohara, M., Topp, E., Gregorich, E.G., Gottschall, N., Drury, C.F., and Lapen, D.R. (2011). "Measuring the effects of watertable management on soil greenhouse gas emissions from corn and soybean fields in Eastern Canada.", 2011 ASA-CSSA-SSSA International Annual Meeting: Fundamental for life: soil, crop and environmental sciences, San Antonio, TX, USA, October 16-19, 2011.
  • Talbot, G., Barret, M., Massé, D.I., Masse, L., Kalmokoff, M.L., and Topp, E. (2011). "Methanogenesis in dairy and swine production.", 1er Symposium du Centre de recherche et de développement sur le bovin laitier et le porc: Parlons science au CRDBLP! / 1st Symposium of the Dairy and Swine Research and Development Centre: Let’s Talk Science at the DSRDC!, Sherbrooke, QC, Canada, June 7, 2011.
  • Topp, E. (2011). "Antibiotic resistance and the environment.", Canadian Rural Health Research Society Annual Conference, Vancouver, BC, Canada, October 20-22, 2011.
  • Topp, E. (2011). "Microbial Source Tracking for identifying sources of pollution and managing water quality.", Raisin River Source Water Protection Committee, Casselman, ON, Canada, January 27, 2011. (Presentation)
  • Yost, C.K., Diarra, M.S., and Topp, E. (2011). "Animals and human as source of fecal indicator bacteria.", in Sadowsky, M. J. and R. L. Whitman (eds.) - The Fecal Bacteria, American Society for Microbiology (ASM), Chapter 4, pp. 67-91.

2010

  • Diarra, M.S., Rempel, H., Leslie, M., Forge, T.A., Bittman, S., Kannangara, T., and Topp, E. (2010). "Persistence of antibiotic resistant Escherichia coli in soil fertilised with chicken litter.", 2nd American Society for Microbiology (ASM) Meeting on Antimicrobial Resistance in Zoonotic and Foodborne Pathogens in Animals, Humans and the Environment, Toronto, ON, Canada, June 8-11, 2010. (Poster)
  • Edwards, M., Topp, E., Metcalfe, C.D., Li, H., Gottschall, N., Bolton, P., Curnoe, W.E., Payne, M., Beck, A., Kleywegt, S., and Lapen, D.R. (2010). "Pharmaceutical and personal care products in tile drainage following surface spreading and injection of dewatered municipal biosolids to an agricultural field [Science of the Total Environment (2009) 407, pp. 4220-4230] (Corrigendum).", Science of the Total Environment, 408(9), pp. 2180.
  • Gagnon, N., Topp, E., Kalmokoff, M.L., Masse, L., Massé, D.I., and Talbot, G. (2010). "Novel fingerprint technology to assess the diversity of methanogens.", 13th International Symposium on Microbial Ecology (ISME13), Seattle, WA, USA, August 22-27, 2010. (Abstract)
  • Gottschall, N., Edwards, M., Topp, E., Bolton, P., Payne, M., Curnoe, W.E., Ball Coelho, B.R., and Lapen, D.R. (2010). "Nitrogen, Phosphorus, and Bacteria Tile and Groundwater Quality Following Direct Injection of Dewatered Municipal Biosolids into Soil [Journal of Environmental Quality, 38(4), pp. 1783-1783] (Erratum No. 2).", Journal of Environmental Quality, 39(2), pp. 433.
  • Inglis, G.D., Thomas, M.C., Selinger, L.B., Taboada, E.N., Boras, V.F., Koning, C.W., and Topp, E. (2010). "The role of water in the epidemiology of campylobacteriosis in southwestern Alberta.", Oldman Watershed Science Form, University of Lethbridge, Lethbridge, AB, Canada, October 20, 2010, Invited Speaker.
  • Lanthier, M., Moreau, G., Cloutier, M., Goulet, B., Nossova, N., Lachapelle, N., Najem, D., Lapen, D.R., and Topp, E. (2010). "Antibiotic Resistance of Arcobacter butzleri isolates from the South Nation River Watershed, Ontario, Canada.", 2nd American Society for Microbiology (ASM) Meeting on Antimicrobial Resistance in Zoonotic and Foodborne Pathogens in Animals, Humans and the Environment, Toronto, ON, Canada, June 8-11, 2010.
  • Rempel, H., Champagne, J., Masson, L., Pritchard, J., Topp, E., and Diarra, M.S. (2010). "DNA-Microarray for Molecular Characterization of Enterococcus isolates from broiler chicken.", 110th General Meeting of American Society for Microbiology (ASM2010), Town & Country Convention Center, San Diego, CA, USA, May 23-27, 2010. (Poster)
  • Ruecker, N.J., Wilkes, G.A., Lapen, D.R., Topp, E., Edge, T.A., and Neumann, N.F. (2010). "Investigating the association between land use and cryptosporidium occurrence in the south nation watershed in eastern Ontario, Canada.", International Symposium on Waterborne Pathogens 2010, Manhattan Beach, CA, USA, May 2-4, 2010.
  • Shtepani, I., Edge, T.A., Valeo, C., Khan, I.U.H., Gannon, V.P.J., Kent, R., Koning, W., Lapen, D.R., Medeiros, D.T., Miller, J., Phillips, R., Topp, E., van Bochove, É., Ruecker, N.J., and Neumann, N.F. (2010). "Source water protection: How well do traditional water quality indicators correlate with pathogen occurrence?", Water Quality Technology Conference and Exposition 2009, Seattle, WA, USA, November 15-19, 2009, pp. 3710-3720.
  • Sunohara, M., Youssef, M.A., Topp, E., and Lapen, D.R. (2010). "Measured effect of agricultural drainage water management on hydrology, water quality, and crop yield.", Canadian Society for Bioengineering CSBE/SCGAB and CIGR jointly held 9th International Drainage Symposium, Québec City Convention Centre, Québec City, QC, Canada, June 13-16, 2010, Paper No. 711P0610e, pp. 392-401.
  • Talbot, G., Topp, E., Kalmokoff, M.L., Roy, C.S., Brooks, S.P.J., Beaulieu, C., and Massé, D.I. (2010). "Archaeal community analysis along a plug-flow bioreactor treating swine manure.", Canadian Society of Microbiologists (CSM) 60th Annual Conference / Conférence annuelle de la Société Canadienne des Microbiologistes (SCM), Hamilton, ON, Canada, June 14-17, 2010.
  • Thomas, M.C., Selinger, L.B., Topp, E., and Inglis, G.D. (2010). "Seasonal distribution of planktonic protists in southwestern Alberta.", Oldman Watershed Science Form, University of Lethbridge, Lethbridge, AB, Canada, October 20, 2010, Invited Speaker.
  • Topp, E. (2010). "Distribution and dynamics of pathogenic and antibiotic-resistant enteric microorganisms at the farm and the watershed scale.", University of Guelph Veterinary School, Dept. of Pathobiology, Guelph, ON, Canada, May 7, 2010. (Presentation)
  • Topp, E. (2010). "Drugs in Sludge - Assessing the risk when municipal biosolids are recycled onto agricultural land.", Institute of Environment and Health, McMaster University, Hamilton, ON, Canada, October 28, 2010. (Presentation)
  • Topp, E. (2010). "Drugs in Sludge - Assessing the risk when municipal biosolids are recycled onto agricultural land.", University of Toronto Centre for Environment, Toronto, ON, Canada, March 4, 2010. (Presentation)
  • Topp, E. (2010). "Drugs in Sludge: Fate Following Application to Agricultural Land.", Special symposium on pharmaceuticals and the environment- SETAC-Europe Pharmaceuticals Advisory Group, Seville, Spain, May 23, 2010, Invited talk.
  • Topp, E., van Bochove, É., Edge, T.A., Flemming, C.A., Gannon, V.P.J., and Lanthier, M. (2010). "Fecal contamination in mixed activity watersheds: Developments in human risk assessment and risk management.", 14th IWA International Conference on Diffuse Pollution and Eutrophication, Beaupré, QC, Canada, September 12-17, 2010, Keynote speaker.
  • van Bochove, É., Topp, E., Thériault, G., Denault, J.-T., Allaire, S.E., Dechmi, F., and Rousseau, A.N. (2010). "Coliforms.", in Eilers, W., MacKay, R., Graham, L., and Lefebvre, A. (eds.) - Environmental Sustainability of Canadian Agriculture: Agri-Environmental Indicator Report Series. Report #3//L'agriculture écologiquement durable au Canada : Série sur les indicateurs agroenvironnementaux - Rapport n° 3, Agriculture and Agri-Food Canada (AAFC)/Agriculture et Agroalimentaire Canada (AAC), Chapter 14, pp. 94-100.

2009

  • Alexander, T.W., Inglis, G.D., Yanke, L.J., Topp, E., and McAllister, T.A. (2009). "Characterization of antimicrobial-resistant Escherichia coli from samples collected throughout processing of feedlot cattle at a commercial abattoir.", ADSA-CSAS-ASAS 2009 Joint Annual Meeting, Montréal Convention Center, Montréal, QC, Canada, July 12-16, 2009. (Poster)
  • Delaquis, P.J., Bach, S.J., LeBlanc, D.I., Brassard, J., Houde, A., Villeneuve, S., Bezanson, G.S., Diarra, M.S., Topp, E., Blais, B., Gajadhar, A., Bisaillon, J.-R., Fazil, A.M., Gilmour, M., Mattison, K., and Bidawid, S. (2009). "A systems-based approach for the assessment of microbiological threats to the food supply.", 13th Annual Federal Food Safety and Nutrition Research Meeting (FFSNRM), Ottawa, ON, Canada, November 4-5, 2009. (Presentation)
  • Frey, S.K., Rudolph, D.R., Lapen, D.R., Ball Coelho, B.R., and Topp, E. (2009). "Influence of Liquid Manure Application Methods on the Mobility of Dissolved Nutrient Species in Macroporous and Tile-Drained Soils.", 2009 Ground Water Summit, Hilton Tucson El Conquistador Golf & Tennis Resort, Tuscon, AZ, USA, April 21, 2009. (Presentation)
  • Gottschall, N., Edwards, M., Topp, E., Bolton, J.M., Payne, M., Kleywegt, S., Curnoe, W.E., Ball Coelho, B.R., and Lapen, D.R. (2009). "Nitrogen, Phosphorus, and Bacteria Tile and Groundwater Quality Following Direct Injection of Dewatered Municipal Biosolids into Soil [Journal of Environmental Quality, 38(4), pp. 1783-1783] (Erratum).", Journal of Environmental Quality, 38(4), pp. 1783.
  • Lanthier, M., Lapen, D.R., Cloutier, M., Goulet, B., Nossova, N., and Topp, E. (2009). "Isolation and Characterization of Arcobacter spp. From the South Nation Watershed, Ontario, Canada.", Canadian Society of Microbiologists (CSM) 59th Annual Conference / Conférence annuelle de la Société Canadienne des Microbiologistes (SCM), Concordia University, Montréal, QC, Canada, June 15-18, 2009, Abstract AE37. (Abstract)
  • Lanthier, M., Lapen, D.R., Cloutier, M., Nossova, N., and Topp, E. (2009). "Isolation and Characterization of Arcobacter spp. From the South Nation Watershed, Ontario, Canada.", 109th General Meeting of American Society for Microbiology, Philadelphia, PA, USA, May 17-21, 2009, Abstract Q170. (Abstract)
  • Lapen, D.R., Ball Coelho, B.R., Topp, E., Larsbo, M., and Rudolph, D.R. (2009 Internal). NM8001 - Risk of surface and groundwater contamination from land application of biosolids/manures on lands with subsurface drains and inlets. Report to Nutrient Management Joint Research Program, Ontario Ministry of Agriculture, Food and Rural Affairs (OMAFRA). (Report)
  • Sabourin, L., Beck, A., Duenk, P.W., Kleywegt, S., Lapen, D.R., Li, H.X., Metcalfe, C.D., Payne, M., and Topp, E. (2009). "Runnoff of pharmaceuticals and personal care products following application of dewatered municipal biosolids to an agricultural field [Science of the Total Environment 407 (2009) 4596-4604] (Erratum).", Science of the Total Environment, 407(22), pp. 5928-5930.
  • Talbot, G., Roy, C.S., Topp, E., Beaulieu, C., Palin, M.-F., and Massé, D.I. (2009). "Anaerobic bacterial population dynamics during glucose and volatile fatty acid degradation.", 5th ASPD Specialised Conference: Microbial Population Dynamics in Biological Wastewater Treatment, Aalborg, Denmark, May 24-27, 2009, Abstract No. 11024.
  • Talbot, G., Roy, C.S., Topp, E., Kalmokoff, M.L., Brooks, S.P.J., Beaulieu, C., Palin, M.-F., and Massé, D.I. (2009). "Multivariate analysis of microbial population quantitative data during start-up of a compartmentalized anaerobic bioreactor treating swine manure.", 5th ASPD Specialised Conference: Microbial Population Dynamics in Biological Wastewater Treatment, Aalborg, Denmark, May 24-27, 2009.
  • Topp, E., Lapen, D.R., and Metcalfe, C.D. (2009). "The Agriculture and Agri-Food Canada Program to Assess and Manage the Transport of Microconstituents in Biosolids-Amended Soils.", Proceedings of the Water Environment Federation, Residuals and Biosolids, pp. 765-766.
  • Topp, E., Ruecker, N.J., Wilkes, G.A., Lapen, D.R., and Neumann, N.F. (2009). "Faune et contamination des sources d’eau par Cryptosporidium et Giardia.", 22e Entretiens du Centre Jacques Cartier, École Nationale Vétérinaire de Lyon, Lyon, France, November 28-December 2, 2011, Invited talk.
  • Yanke, L.J., Topp, E., and McAllister, T.A. (2009). "Persistence of antimicrobial resistant Enterococcus spp. in feedlot cattle feces.", 109th General Meeting of American Society for Microbiology, Philadelphia, PA, USA, May 17-21, 2009, pp. 616. (Poster)
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