As a result of research conducted after the fires, a new fire management plan for Yellowstone was implemented in 1992. The plan observed stricter guidelines for managing natural fires, increased the staffing levels of fire monitors and related occupations, and allocated greater funding for fire management. By 2004, further amendments to the wildland fire management plan were added. According to the 2004 plan, natural wildfires are allowed to burn, so long as parameters regarding fire size, weather, and potential danger are not exceeded. Those fires that do exceed the standards, as well as all human-caused fires, are to be suppressed. These changes are primarily updates of the 1972 fire management plan and continue to emphasize the role of fire in maintaining a natural ecosystem, but apply stricter guidelines and lower levels of tolerance.