Beavers play a crucial role in shaping freshwater ecosystems through their dam-building activities. By constructing dams, beavers create wetlands that serve as habitats for a variety of plant and animal species. These wetlands help improve water quality by filtering pollutants and excess nutrients. Additionally, beaver dams help to regulate water flow, reduce erosion, and maintain water levels, which can benefit other species in the ecosystem. Overall, beavers are considered ecosystem engineers that significantly influence the structure and function of freshwater environments.
