The extinction of plant and animal species has become an issue in the news, and the media have gradually become interested in the fate of the most endangered taxa. International organizations, such as the International Union for Conservation of Nature (IUCN), the World Wildlife Fund (WWF), and others, are making tremendous efforts to safeguard hundreds of species. Their actions have already mad...

to preserve wildlife habitats and populations, it is normal practice to select representative natural areas. the aim of this research is prioritization of candidate sites for environmental protection in mazandaran province. for this purpose, 26 forest cover types, habitats of 8 mammal species and important distribution areas for 4 groups of birds were used as input criteria. simulated annealing...

These Guidelines are designed to be used in association with other publications which cover relevant subjects in greater detail. In particular, users are encouraged to refer to the following: Founded in 1948, The World Conservation Union brings together States, government agencies and a diverse range of non-governmental organizations in a unique world partnership: over 900 members in all, sprea...