The status of wild sheep in North America typifies the plight of many wildlife species
in modern times: wild sheep have declined to 10-40% of their numbers during pristine times
and on a global scale approximately 31% ...
The California brown pelican (Pelecanus occidentalis californicus) is listed as an
endangered species under the U.S. Endangered Species Act. The Recovery Plan for
this subspecies outlines the need to "Assure long-term ...
Historically, least terns (Sterna antillarum) were one of the most common tern species in North America. However, population declines have resulted from direct and indirect anthropogenic pressures on their breeding and ...
Island systems and species are susceptible to extinction because of their small population size and an ecological naiveté from an evolutionary past lacking strong competition and predation. For example, only one-fifth o ...
The number of endangered species is rapidly increasing while paucity of adequate information and resources delays establishment of conservation actions. The IUCN’s listing system is insufficient to determine conservation ...
