Mathematical modeing of stored-grain ecosystems

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The long-term objective of our research program is to reduce the qualitative and quantitative losses in cereals, oilseeds and pulses (collectively referred to as grains) during storage by developing innovative stored-grain management tools and mathematical models of stored-grain ecosystems. A stored-grain ecosystem is a man-made ecosystem where interactions among physical, chemical and biological variables cause deterioration of grain. Thus, an enhanced understating of these interactions is critical to developing innovative management strategies to preserve grain quality. A comprehensive ecosystem model must include simulation of heat transfer; insect movement; insect population dynamics; gaseous diffusion, convection, and sorption; moisture transfer; and the production of carbon dioxide, moisture, and heat by grain and pests.