Many wildlife species depend on grasslands for food, cover, and nesting sites. Prairies areas throughout North America continue to decline in quantity and quality, due in part to invasion by exotic plant species. Refuge managers use a variety of management tools to manage the prairie resources at Sullys Hill National Game Preserve. These include: grazing, mowing, prescribed fire, farming and invasive plant removal. Vegetation surveys are conducted to monitor the diversity and density of grassland species within the prairie habitats at Sullys Hill NGP.