The genus Silene, with more than 100 species in Iran is an important genus of Iranian flora. According to available data on the northwestern parts of Iran, including three provinces of Ardabil, East and West Azarbaijan are considered as a major diversity center of perennial species of the genus Silene in Iran. In the course of a revision of Silene in this area, some interesting specimens were c...

Conservation agencies are often faced with the difficult task of prioritizing what recovery actions receive support. With the number of species under threat of decline growing globally, research that informs conservation priorities is greatly needed. The relative vulnerability of cryptic or nomadic species is often uncertain, because populations are difficult to monitor and local populations of...

We, the U.S. Fish and Wildlife Service (Service), revise the regulations for the nonessential experimental population of the Mexican wolf (Canis lupus baileyi) under section 10(j) of the Endangered Species Act of 1973, as amended. This action is being taken in coordination with our final rule in this Federal Register to list the Mexican wolf as an endangered subspecies. The regulatory revisions...

Under the U.S. Endangered Species Act (ESA), a species can be listed if it is at risk "in all or a significant portion of its range," but the ESA provides no guidance on how to interpret this key phrase. We propose a simple test to determine whether the areas of a species' range in which it is currently at risk amount to a significant portion: If the species were to become extirpated from these...

The latest issue of the United Nations Educational, Scientific and Cultural Organisation (Unesco) atlas on the status of the world's languages finds threats to a growing number as a handful of languages dominate an increasingly 'globalised' world but policy towards languages can have a major effect on survival prospects. In one extreme example of the threatened status of some languages, Unesco ...

BACKGROUND Animal horns (AHs) have been applied to traditional medicine for more than thousands of years, of which clinical effects have been confirmed by the history. But now parts of AHs have been listed in the items of wildlife conservation, which limits the use for traditional medicine. The contradiction between the development of traditional medicine and the protection of wild resources ha...

Natural disturbances are largely suppressed in Central European landscapes due to economic and human safety concerns. goals increase the extent of secondary wilderness areas have potential support restoration threatened habitats associated with natural disturbances. Germany is among countries most advanced goals. This study aimed investigate whether habitat types shaped by mostly red-listed as ...

The Endangered Species Act of 1973, as amended, assigns the U.S. Fish and Wildlife Service the responsibility for listing species of plants and animals in the United States whose existence is either threatened or endangered. After a species is listed, the Service is responsible for, among other things, developing recovery plans, reviewing proposed federal actions to ensure that they do not comp...