Robert D.

Research Microbiologist

My current research focus is to measure bioaerosols and estimate ammonia and greenhouse gas emissions from commercial dairy production systems in the Pacific Northwest. To refine dispersion models to more accurately predict the transport of pathogens during wastewater irrigation events, research has been conducted to quantify bacterial pathogens in dairy wastewaters, assess the impacts of sprinkler pressure and spray plates upon microorganism viability, and determine the amount of spray drift that occurs during pressurized irrigation events. Additional efforts have been placed on optimizing methodologies to effectively capture and quantify airborne endotoxin, as well as, assess their off-site transport from dairies. 

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