American bullfrog populations have exploded around the world with dire consequences for native wildlife. But researchers say they may have found a way to help these species rebound.

According to the DEM, Sawmill Pond in Foster, and Carolina Trout Pond in Richmond, are being treated for invasive water plants that can harm the native plants and fish.

An aquatic invasive species in Michigan, European frog-bit plants reduce a freshwater ecosystem's ability to breathe, sucking up oxygen and blocking sunlight as they rapidly fan out over the surface.