J. Roy

Publications30
h-index14
Citations783
Highly Influential Citations36
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ASSESSING SOIL WATER REPELLENCY USING THE MOLARITY OF ETHANOL DROPLET (MED) TEST
The molarity of ethanol droplet (MED) test is a popular rapid method for assessing soil water repellency under field and laboratory conditions. This paper reviews the theoretical basis of the MED…
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Comparative microscale analysis of the effects of triclosan and triclocarban on the structure and function of river biofilm communities.
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Aerobic Biofilms Grown from Athabasca Watershed Sediments Are Inhibited by Increasing Concentrations of Bituminous Compounds
TLDR
It is suggested that biofilms that develop in the presence of higher concentrations of bituminous compounds are less productive and have lower biomass, linked to a decrease in the activities and abundance of photosynthetic organisms likely due to inhibitory effects.
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Investigation on gene transfer from genetically modified corn (Zea mays L.) plants to soil bacteria
TLDR
The study suggests that the nptII gene was relatively rare in the soil bacterial populations and there was no evidence of gene transfer from a GM corn plant to soil bacteria based on the data from total soil bacterial communities.
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Molecular and microscopic assessment of the effects of caffeine, acetaminophen, diclofenac, and their mixtures on river biofilm communities
TLDR
The Archaeal community differed significantly in its response to these exposures based on community analyses, confirming a need to integrate these organisms into ecotoxicological studies.
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Relationship between water repellency and native and petroleum-derived organic carbon in soils.
TLDR
It is proposed that approximately 29 and 10% of measured total organic carbon in water-repellent A- and B-horizon soil, respectively, consists of dichloromethane-insoluble organic carbon of petroleum origin, which contains most of the causative agents of soil water repellency at the studied sites.
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Petroleum residues as water-repellent substances in weathered nonwettable oil-contaminated soils
Some soils develop severe water repellency several years or decades following oil contamination. We previously reported on the characteristics of three such soils. Here we report on the…
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Resilience and recovery: the effect of triclosan exposure timing during development, on the structure and function of river biofilm communities.
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Community-Level Assessment of the Effects of the Broad-Spectrum Antimicrobial Chlorhexidine on the Outcome of River Microbial Biofilm Development
TLDR
Community level assessment indicated a risk of low levels of chlorhexidine in aquatic habitats while conventional approaches did not.
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Flexible conformation in organic matter coatings: an hypothesis about soil water repellency.
Some soils develop severe water repellency several years or decades following oil contamination. We previously reported that soil water repellency is completely eliminated by extraction with…
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