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Lapen, David, Ph.D.

Research Scientist

Contact Information:

960 Carling Ave
Ottawa, Ontario K1A 0C6
Telephone: 613-759-1537
Fax: 613-759-1937
Email: david.lapen@agr.gc.ca

Areas of Expertise:

  • Hydrology
  • Applied soil physics
  • Data mining
  • Vadose zone modeling
  • Precision agriculture
  • Geographic information systems

Current Projects:

  • Watershed evaluation of beneficial management practices
  • Managing biosolid contamination of water resources
  • Microbial source tracking

Research publications

2016

2015

2014

  • Adam, Z., Whiteduck-Leveillee, K., Cloutier, M., Chen, W., Lewis, C.T., Lévesque, C.A., Topp, E., Lapen, D.R., Tambong, J.T., Talbot, G., and Khan, I.U.H. (2014). "Draft genome sequence of Arcobacter cibarius Strain LMG21996{SUP}T{/SUP} isolated from broiler carcasses.", Genome Announcements, 2(1), pp. e00034-14. doi : 10.1128/genomeA.00034-14
  • Adam, Z., Whiteduck-Leveillee, K., Cloutier, M., Chen, W., Lewis, C.T., Lévesque, C.A., Topp, E., Lapen, D.R., Tambong, J.T., Talbot, G., and Khan, I.U.H. (2014). "Draft genome sequences of two Arcobacter strains isolated from human feces.", Genome Announcements, 2(2 e00113-14). doi : 10.1128/genomeA.00113-14
  • Adam, Z., Whiteduck-Leveillee, K., Cloutier, M., Tambong, J.T., Chen, W., Lewis, C.T., Lévesque, C.A., Topp, E., Lapen, D.R., Talbot, G., and Khan, I.U.H. (2014). "Draft genome sequences of three Arcobacter strains of pig and dairy cattle manure origin.", Genome Announcements, 2(3:e00377-14). doi : 10.1128/genomeA.00377-14
  • Chantigny, M.H., Larney, F.J., Bittman, S., Lapen, D.R., Angers, D.A., Rochette, P., and Hunt, D.E. (2014). "Transformations and fate of fall-applied nitrogen as a function of winter conditions – a multi-site experiment.", 18th Nitrogen Workshop. The nitrogen challenge: Building blueprint for nitrogen use efficiency and food security, Lisbon, Portugal, June 30-July 3, 2014, Extended Abstract –reviewed. (Abstract)
  • El-Khoury, A., Seidou, O., Lapen, D.R., Sunohara, M., Que, Z., Mohammadian, M., and Daneshfar, B. (2014). "Prediction of land-use conversions for use in watershed-scale hydrological modeling: a Canadian case study.", Canadian Geographer, 58(4), pp. 499-516. doi : 10.1111/cag.12105
  • Gregorich, E.G., McLaughlin, N.B., Lapen, D.R., Ma, B.-L., and Rochette, P. (2014). "Soil Compaction, Both an Environmental and Agronomic Culprit: Increased Nitrous Oxide Emissions and Reduced Plant Nitrogen Uptake.", Soil Science Society of America Journal, 78(6), pp. 1913-1923. doi : 10.2136/sssaj2014.03.0117
  • Khan, I.U.H., Gannon, V.P.J., Jokinen, C.C., Kent, R., Koning, W., Lapen, D.R., Medeiros, D.T., Miller, J.J., Neumann, N.F., Phillips, R., Schreier, H., Topp, E., van Bochove, É., Wilkes, G.A., and Edge, T.A. (2014). "A National Investigation of the Prevalence and Diversity of Thermophilic Campylobacter Species in Agricultural Watersheds in Canada", Water Research, 61, pp. 243-252. doi : 10.1016/j.watres.2014.05.027
  • Macherius, A., Lapen, D.R., Reemtsma, T., Römbke, J., Topp, E., and Coors, A. (2014). "Triclocarban, triclosan and its transformation product methyl triclosan in native earthworm species four years after a commercial-scale biosolids application.", Science of the Total Environment, 472, pp. 235-238. doi : 10.1016/j.scitotenv.2013.10.113
  • McNairn, H., Kross, A., Lapen, D.R., Caves, R., and Shang, J. (2014). "Early Season Monitoring of Corn and Soybeans with TerraSAR-X and RADARSAT-2.", International Journal of Applied Earth Observation and Geoinformation, 28(1), pp. 252-259. doi : 10.1016/j.jag.2013.12.015
  • Rahube, T.O., Marti, R., Scott, A., Tien, Y.C., Murray, R.L., Sabourin, L., Zhang, Y., Duenk, P.W., Lapen, D.R., and Topp, E. (2014). "Impact of Fertilizing With Raw or Anaerobically-Digested Sewage Sludge on the Abundance of Antibiotic-Resistant Coliforms, Antibiotic Resistance Genes and Pathogenic Bacteria in Soil, and on Vegetables at Harvest.", Applied and Environmental Microbiology, 80(22), pp. 6898-6907. doi : 10.1128/AEM.02389-14
  • Sunohara, M., Craiovan, E., Topp, E., Gottschall, N., Drury, C.F., and Lapen, D.R. (2014). "Comprehensive Nitrogen Budgets for Corn and Soybean Fields Under Controlled Tile Drainage for Wetter and Drier Cropping Seasons.", Journal of Environmental Quality, 43(2), pp. 617-630. doi : 10.2134/jeq2013.04.0117
  • Wilkes, G.A., Brassard, J., Edge, T.A., Gannon, V.P.J., Gottschall, N., Jokinen, C.C., Jones, T.H., Khan, I.U.H., Marti, R., Sunohara, M., Topp, E., and Lapen, D.R. (2014). "Long-term monitoring of waterborne pathogens and microbial source tracking markers in paired-agricultural watersheds under controlled and conventional tile drainage management.", Applied and Environmental Microbiology, 80(12), pp. 3708-3720. doi : 10.1128/AEM.00254-14

2013

2012

  • Ball Coelho, B.R., Lapen, D.R., Murray, R.L., Topp, E., Bruin, A.J., and Khan, B. (2012). "Nitrogen loading to offsite waters from liquid swine manure application under different drainage and tillage practices.", Agricultural Water Management, 104, pp. 40-50. doi : 10.1016/j.agwat.2011.11.014
  • Crabbé, P., Lapen, D.R., Clark, H., Sunohara, M., and Liu, Y. (2012). "Economic benefits of controlled tile drainage: watershed evaluation of beneficial management practices, South Nation river basin, Ontario.", Water Quality Research Journal of Canada, 47(1), pp. 30-41. doi : 10.2166/wqrjc.2012.007
  • Edge, T.A., El-Shaarawi, A., Gannon, V.P.J., Jokinen, C.C., Kent, R., Khan, I.U.H., Koning, W., Lapen, D.R., Miller, J.J., Neumann, N.F., Phillips, R., Robertson, W.J., Schreier, H., Scott, A., Shtepani, I., Topp, E., Wilkes, G.A., and van Bochove, É. (2012). "Investigation of an Escherichia coli Environmental Benchmark for Waterborne Pathogens in Agricultural Watersheds in Canada.", Journal of Environmental Quality, 41(1), pp. 21-30. doi : 10.2134/jeq2010.0253
  • Frey, S.K., Rudolph, D.R., Lapen, D.R., and Ball Coelho, B.R. (2012). "Viscosity dependant dual-permeability modelling of liquid manure movement in layered, macroporous, tile drained soil.", Water Resources Research, 48(W00L11). doi : 10.1029/2011WR010809
  • Gottschall, N., Topp, E., Metcalfe, C.D., Edwards, M., Payne, M., Kleywegt, S., Russell, P., and Lapen, D.R. (2012). "Pharmaceutical and personal care products in groundwater, subsurface drainage, soil, and wheat grain, following a high single application of municipal biosolids to a field.", Chemosphere, 87(2), pp. 194-203. doi : 10.1016/j.chemosphere.2011.12.018
  • Jokinen, C.C., Edge, T.A., Koning, W., Laing, C.R., Lapen, D.R., Miller, J.J., Mutschall, S.K., Scott, A., Taboada, E.N., Thomas, J.E., Topp, E., Wilkes, G.A., and Gannon, V.P.J. (2012). "Spatial and Temporal Drivers of Zoonotic Pathogen Contamination of an Agricultural Watershed.", Journal of Environmental Quality, 41(1), pp. 242-252. doi : 10.2134/jeq2011.0203
  • Lyautey, E., Hartmann, A., Lapen, D.R., and Topp, E. (2012). "A comparison of enrichment and direct plating methods for isolation of Listeria monocytogenes from surface water.", Canadian Journal of Microbiology, 58(12), pp. 1405-1410. doi : 10.1139/cjm-2012-0418
  • Ruecker, N.J., Matsune, J.C., Wilkes, G.A., Lapen, D.R., Topp, E., Edge, T.A., Sensen, C.W., Xiao, L., and Neumann, N.F. (2012). "Molecular and phylogenetic approaches for assessing sources of Cryptosporidium contamination in water.", Water Research, 46(16), pp. 5135-5150. doi : 10.1016/j.watres.2012.06.045
  • Sabourin, L., Duenk, P.W., Bonte-Gelok, S., Payne, M., Lapen, D.R., and Topp, E. (2012). "Uptake of pharmaceuticals, hormones and parabens into vegetables grown in soil fertilized with municipal biosolids.", Science of the Total Environment, 431, pp. 233-236. doi : 10.1016/j.scitotenv.2012.05.017
  • Sunohara, M., Topp, E., Wilkes, G.A., Gottschall, N., Neumann, N.F., Ruecker, N.J., Jones, T.H., Edge, T.A., Marti, R., and Lapen, D.R. (2012). "Impact of Riparian Zone Protection From Cattle on Nutrient, Bacteria, F5 coliphage, Cryptosporidium, and Giardia Loading of an Intermittent Stream.", Journal of Environmental Quality, 41(4), pp. 1301-1314. doi : 10.2134/jeq2011.0407

2011

2010

2009

Other science related publications

2016

  • Zoski, E.D. and Lapen, D.R. (2016). "Addressing Nutrient Contamination of Tile Drainage Water with Woodchip Bioreactors and P Treatment Amendments.", Ag Water Community of Practice. (Presentation)

2015

  • Chantigny, M.H., Angers, D.A., Rochette, P., Larney, F.J., Bittman, S., Hunt, D.E., and Lapen, D.R. (2015). "Overwinter transformation and fate of fall-applied manure nitrogen. (https://www.eiseverywhere.com/ehome/wastetoworth/182071/)", Waste to Worth: Spreading Science and Solutions, Seattle, WA, USA, March 31-April 3, 2015, Keynote speaker.
  • 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)
  • Frey, S.K., Park, Y-J., Hwang, H-T., Berg, S., Lapen, D.R., and Sudicky, E.A. (2015). "Hyper-Resolution Simulation of Field-Scale Physical Processes in Watershed-Scale Integrated Hydrologic Models.", Grand Challenges in Modeling Soil Processes Symposium: Soil Science Society of America Annual Meeting, Minneapolis, MN, USA, November 15-18, 2015.
  • Hussain, S., Lapen, D.R., Frey, S.K., Gottschall, N., Blowes, D., and Ptacek, C. (2015). "Reactive Transport Modeling of Nitrogen Fate in a Structured Clay Loam Subject to Liquid Swine Manure Application: Implications of Tile Drainage Management.", ASA-CSSA-SSSA International Annual Meeting: Synergy in Science. Partnering for Solutions, Minneapolis, MN, USA, November 15-18, 2015.
  • 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)

2014

  • Chantigny, M.H., Larney, F.J., Bittman, S., Lapen, D.R., Angers, D.A., Rochette, P., and Hunt, D.W.A. (2014). "Transformation and fate of fall-applied nitrogen as a function of winter conditions – a mujlti-site experiment.", 18th Nitrogen Workshop. The nitrogen challenge: Building blueprint for nitrogen use efficiency and food security, Lisbon, Portugal, June 30-July 3, 2014. (Poster)
  • 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.

2013

  • Chantigny, M.H., Larney, F.J., Angers, D.A., Bittman, S., Lapen, D.R., and Rochette, P. (2013). "Overwinter transformation and fate of fall-applied nitrogen in various Canadian ecozones.", Canadian Society of Soil Science-Manitoba Soil Science Soc.-Can. Soc. Agric. Forest Meteorology Joint Ann. Meeting, Winnipeg, MB, Canada, July 22-25, 2013, pp. 46. (Abstract)
  • 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.
  • 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

  • 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.
  • Solliec, D.M., Massé, D.I., Lapen, D.R., and Sauvé, J.P. (2012). "Analysis of trimethoprim, lincomycin and sulfadoxin using Laser Diode Thermal Desorption Atmospheric Pressure Chemical Ionization Tandem Mass Spectrometry in manure.", 16e colloque annuel du Chapitre Saint-Laurent, Hôtel Château Laurie, Québec City, QC, Canada, June 7-8, 2012.
  • Solliec, D.M., Massé, D.I., Lapen, D.R., and Sauvé, J.P. (2012). "Analysis of trimethoprim, lincomycin and sulfadoxin using Laser Diode Thermal Desorption Atmospheric Pressure Chemical Ionization Tandem Mass Spectrometry in manure.", Montreal Post-ASMS Symposium, Montréal, QC, Canada, September 20, 2012.
  • Solliec, D.M., Massé, D.I., Lapen, D.R., and Sauvé, S. (2012). "Analysis of trimethoprim, lincomycin and sulfadoxin using Laser Diode Thermal Desorption Atmospheric Pressure Chemical Ionization Tandem Mass Spectrometry in manure.", 60th Annual Conference of the American Society for Mass Spectrometry (ASMS), Vancouver, BC, Canada, May 19-24, 2012.

2011

  • 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.

2010

  • 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.
  • 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.
  • 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.
  • 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.

2009

  • 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)
  • McLaughlin, N.B., Burtt, S.D., and Lapen, D.R. (2009). "Comparison of directional semi-variograms for mouldboard plough and field cultivator draught.", 7th Joint International Agricultural Conference: ECPA, ECPLF and EFITA conference, Wageningen University & Research Centre, Wageningen, The Netherlands, July 6-8, 2009.
  • 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.
  • 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.
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