America's National Parks and Road Trip Planning Find Your Park Road Trip Activities Nature

Buffalo National River Nonnative Species

The Asian Clam (Corbicula fluminea) was introduced into the United States in the 1930's, and now they are found in nearly every major watershed in the United States. Asian Clam and the Zebra Mussel (Dreissena polymorpha) are dissimilar to native mussels because they require no intermediate fish host for reproduction and are capable of reproduction in mass quantities. The Buffalo River was found to have increasing densities of Asian Clams and these growing populations were highest within sites with physical habitat disturbance and poor water-quality. At these locations the diversity of surrounding macroinvertebrate communities is decreasing and resource managers are trying to understand the mechanisms involved in the interactions between the aquatic insects and the Asian Clam.

In 1995 the largest sighting of feral hogs on the Buffalo National River was reported, a herd of 35 hogs was observed in the Lower Buffalo Wilderness Area. Feral hogs have been released into the park from numerous sources in the last 2 decades, and now hogs range up and down the whole river corridor. The increasing densities of feral hogs are a problem due to the impacts they have within the river corridor and tributaries from their rooting and foraging activities.

Other impacts include the decimation of rare plant communities that occur in springs and seeps, and negative interactions with native wildlife. Some other nonnatives species found in Buffalo National River include Kudzu, Mimosa, Garlic Musturd, Spotted Knapweed, Tall Fescue, Sericea lepidezia, Johnson grass, and numerous other species.

Featured Outdoor Gear

The Upsalla Shearling Boot lets us enjoy the supportive comfort of the Birkenstock footbed into the colder months thanks...
Price subject to change | Available through

National Park Spotlight
Bryce Canyon National Park
Bryce Canyon National Park
Featured Wildlife
Maine Puffins
Maine Puffins

Maine ocean islands provide the only nesting sites for Atlantic puffins in the United States. Eastern Egg Rock in the midcoast region, Seal Island and Matinicus Rock at the mouth of Penobscot Bay, and Machias Seal Island and Petit Manan Island off the downeast coast provide habitat for more than 4,000 puffins each summer.