3 hours ago Beaver once swam in Big Bear Creek in the Lincoln National Forest and built their dams in the area, which improved the ecosystem. But the semi-aquatic rodents have since abandoned that part of their range amid habitat loss. “We’ve lost a lot of the riparian vegetation, the biomass and species diversification within this area,” said Larry Cordova, a biologist with the Lincoln National Forest. Now the U.S Forest Service is asking for $20,000 of funding from the Habitat Stamp Program to improve the riparian area ecosystem, including building fake beaver dams that play the function the beavers once played in the creek system.