How do beavers impact wetland ecosystems?

Beavers significantly impact wetland ecosystems primarily through their dam construction, which plays a crucial role in enhancing biodiversity. When beavers build dams, they create ponds and wetlands that provide habitat for a variety of plant and animal species. This new aquatic environment supports different organisms that might not thrive in upland areas, including fish, amphibians, birds, and insects, all of which contribute to a richer and more diverse ecosystem.

Additionally, the slow-moving water created by beaver dams allows for sediment to settle, leading to improved water quality and the establishment of diverse plant communities. These plants, in turn, support various animal species, creating a dynamic and interconnected ecosystem.

While other options mention impacts of beavers, such as vegetation consumption or water level changes, they do not capture the broader ecological benefits that result from their dam-building activity, which is fundamental to promoting biodiversity. This makes enhancing biodiversity through dam construction the most accurate reflection of beavers' positive contributions to wetland ecosystems.