• A cool & crisp autumn sunrise at the Mound City Group

    Hopewell Culture

    National Historical Park Ohio

Non-native Vegetation

There is a strong consensus in the fields of ecology and conservation biology that invasive exotic species pose one of the greatest threats to the integrity of native ecosystems in the U.S. and around the world. Among the most notable effects are modifications of competitive interactions, promotion of invasion by other non-indigenous plants and animals, hybridization with native species and consequent alteration of the gene pool, changes in the physical structure of ecosystems and communities, increased erosion, shifts in phenology, new disturbance patterns, and altered successional paths.

Learn more about the NPS Heartland Exotic Plant Management Plan at Hopewell Culture NHP.

Did You Know?

Copper effigy bird

People of the Hopewellian Culture made extensive use of copper from the Lake Superior region, near the Keweenaw peninsula and Isle Royal area. Copper was worked into elaborate objects and effigy artwork without using smelting techniques. More...