On June 2, 2014, the U.S. Fish and Wildlife Service (Service) announced the listing of the Webber's ivesia (Ivesia webberi) as a threatened species under the Endangered Species Act, and the designation of 2,170 acres of critical habitat in Plumas, Lassen, and Sierra Counties in northeastern California, and in Washoe and Douglas Counties in northwestern Nevada.  As stated in a related announcement issued by the Service, the rule listing the Webber's ivesia and designating critical habitat will not become effective until July 3, 2014.  The identified threats to the species include "urban development, authorized and unauthorized road use, OHVs and recreation use, livestock grazing and trampling, wildfire and suppression activities, displacement by nonnative, invasive plant species, and inadequacy of existing regulatory mechanisms."