Lotsa ways, EJ- check any decent wildlife management text or course. For example, selective planting of browse/food sources,'supplemental feeding' in winter, selective woodland cutting/management, bucks-only hunting regulations (when effective population control requires killing does)... the list goes on & on. Oh, and don't forget killing off all the natural predators & fighting their reintroduction. Wolves and coyotes and pumas don't have a 'right' to kill deer- only humans do. ;-)