Zasoby i środowisko · 15/12/1994
US Fish and Wildlife Service Lists Five California Plants and the Morro Shoulderband Snail as Endangered or Threatened
The US Fish and Wildlife Service has determined the endangered status of five California plants and the Morro shoulderband snail, citing threats from residential development, road maintenance, and other human activities, as well as stochastic extinction due to small and isolated populations.