Food Webs at the Landscape LevelScientists rely on food webscomplex networks that trace the flow of nutrients and energy between species and through ecosystemsto understand the infrastructure of ecological communities. But given the complexities of food websthink of following the flow of nutrients through the microbes, fungi, roots, worms, ants, and birds that pass over or through a single cubic meter of prairie soilit's not difficult to see why most experiments on food web dynamics