With a little time and effort, rangeland managers can have a dramatic impact on the resilience of California's riparian areas, which are important to the state's human, environmental and economic well-being. Rangeland ecologists at the University of California, Davis, found that when ranchers invest even one week a year in practices that keep cows away from creeks—like herding, fencing and providing supplemental nutrition and water—they can improve riparian health by as much as 53 percent.