D
David R. Lapen
Researcher at Agriculture and Agri-Food Canada
Publications - 168
Citations - 6673
David R. Lapen is an academic researcher from Agriculture and Agri-Food Canada. The author has contributed to research in topics: Tile drainage & Soil water. The author has an hindex of 41, co-authored 155 publications receiving 5748 citations.
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Journal ArticleDOI
Seasonal relationships among indicator bacteria, pathogenic bacteria, Cryptosporidium oocysts, Giardia cysts, and hydrological indices for surface waters within an agricultural landscape.
Graham Wilkes,Thomas A. Edge,Victor P. J. Gannon,Cassandra C. Jokinen,Emilie Lyautey,Diane Medeiros,Norman F. Neumann,Norma J. Ruecker,Edward Topp,David R. Lapen +9 more
TL;DR: The results from this study indicate that no one indicator or simple hydrological index is entirely suitable for all environmental systems and pathogens/parasites, even within a common geographic setting.
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Assessment of RapidEye vegetation indices for estimation of leaf area index and biomass in corn and soybean crops
TL;DR: This study demonstrates the applicability of RapidEye multi-spectral data for estimation of LAI and biomass of two crop types with different canopy structure, leaf structure and photosynthetic pathways and eliminates/reduces the need for reflectance resampling, VIs inter-calibration and spatial resamplings.
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Pharmaceutical and personal care products in groundwater, subsurface drainage, soil, and wheat grain, following a high single application of municipal biosolids to a field
N. Gottschall,Edward Topp,Chris D. Metcalfe,M. Edwards,M. Payne,Sonya Kleywegt,Philip B. Russell,David R. Lapen +7 more
TL;DR: Pharmaceuticals and personal care products were monitored in groundwater, tile drainage, soil, DMB aggregates incorporated into the soil post-land application, and in the grain of wheat grown on the field for a period of ~1 year following application.
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Runoff of pharmaceuticals and personal care products following application of biosolids to an agricultural field
Edward Topp,Sara C. Monteiro,Andrew Beck,Bonnie R. Ball Coelho,Alistair B.A. Boxall,Alistair B.A. Boxall,Peter Duenk,Sonya Kleywegt,David R. Lapen,M. Payne,Lyne Sabourin,Hongxia Li,Chris D. Metcalfe +12 more
TL;DR: Overall, this study showed that injection of biosolids slurry below the soil surface could effectively eliminate surface runoff of PPCPs.
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Uptake of pharmaceuticals, hormones and parabens into vegetables grown in soil fertilized with municipal biosolids.
TL;DR: The potential for micropollutant uptake into crops under normal farming conditions is low, according to this study, which suggests that a one-year offset between biosolid application and the harvest of crops for human consumption is required.