Modeling the Long-Range Transport of Plant Pathogens in the Atmosphere

摘要: Plant pathologists have long been intrigued with the idea that source of inoculum for a major plant-disease epidemic may lie hundreds or even thousands kilometers away. The spores are postulated to be transported disease-outbreak area by winds in lower atmosphere. introduc­ tion pathogen into an where it had not previously occurred is often credited long-range transport. processes transport also cited annual introduction obligate parasite overwinter­ ing likely. To investigate long-range-transport hypothesis, one must able track future and past movement spore-laden air parcel. formal process accomplishing this feat called trajectory analysis. Many plant used analysis examine possibility (5, 18-20, 40, 50, 52, 53, 63, 78). Before advent computer, most trajectories were calculated hand, using available wind-field data. Now plotted data subjected strict quality-control checks. Often calculation just component much larger atmospheric-transport diffusion model traces pollutant from emission at deposition receptor site. This chapter explores application and, more broadly, problems epidemiology. It specifically asks whether can use pathologist if so, how best applied. In addition,