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Allan J. Cessna
Researcher at Agriculture and Agri-Food Canada
Publications - 95
Citations - 3354
Allan J. Cessna is an academic researcher from Agriculture and Agri-Food Canada. The author has contributed to research in topics: Trifluralin & Bromoxynil. The author has an hindex of 29, co-authored 95 publications receiving 3047 citations. Previous affiliations of Allan J. Cessna include Environment Canada & National Water Research Institute.
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Journal ArticleDOI
Quantifying preferential flow in soils: A review of different techniques
TL;DR: In this paper, the authors present a review of laboratory and field techniques, such as breakthrough curves, dye tracing, and scanning techniques, for evaluating preferential flow (PF) in soil at different scales.
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Widespread Use and Frequent Detection of Neonicotinoid Insecticides in Wetlands of Canada's Prairie Pothole Region
Anson R. Main,John V. Headley,Kerry M. Peru,Nicole L. Michel,Allan J. Cessna,Christy A. Morrissey +5 more
TL;DR: Distribution maps indicate neonicotinoid use is increasing and becoming more widespread with concerns for environmental loading, while frequently detected neonicsotinoid concentrations in Prairie wetlands suggest high persistence and transport into wetlands.
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Pesticides in Surface Drinking-Water Supplies of the Northern Great Plains
TL;DR: Investigation of the occurrence of 45 pesticides in drinking water from reservoirs in this area that received water primarily from snowmelt and rainfall runoff from agricultural crop lands suggested that atmospheric deposition was the principal pathway from fields to the reservoirs.
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Acute and Chronic Toxicity of Imidacloprid to the Aquatic Invertebrates Chironomus tentans and Hyalella azteca under Constant- and Pulse-Exposure Conditions
TL;DR: C. tentans was more sensitive to acute and chronic imidacloprid exposure, but less sensitive to a single pulse, than H. azteca, and organisms are able to recover from short-term pulse exposure to similar imidcloprid concentrations if the stressor is removed after four days.
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Effects of insecticide exposure on feeding inhibition in mayflies and oligochaetes.
TL;DR: Overall, imidacloprid reduced the survivorship, feeding, and egestion of mayflies and oligochaetes at concentrations greater than 0.5 but less than 10 μg/L, which indicates physiological and behavioral responses to this insecticide.