This freshwater wetland is a productive wildlife habitat where scattered ponds and diverse vegetation provide water, food, and shelter for countless birds and other wildlife. If left untended, however, the marsh will become clogged with a few species of invasive perennial plants. To preserve this ecosystem, the Fish and Wildlife Service uses a variety of management tools, including prescribed burning, the planned application of controlled fire under appropriate condition for specific purposes. Here, burning is used to eliminate invasive and exotic perennials such as cattails, cut-grass species, and rattle-bush. Annual plants soon colonize the bare soil and yield seeds of higher value to wildlife. Burning also removes tons of dry, dead vegetation that could fuel a destructive wildfire.