It contains information about the state, distribution and protection measures of animal and plant species within the Republic, including the section of the Caspian Sea belonging to Azerbaijan.
Endangered species are those that have sustained a substantial decrease in population and range and have reached a crisis level.
Animals and plants that are little studied, lack the necessary information about their number and resources in nature, and cause certain difficulties in the organization of their protection are also considered rare species.
Under the leadership of academic Jalal Aliyev, the second edition reflects the study of rare and endangered species of plants, fungi, and fauna distributed within Azerbaijan.
This edition published information on 300 higher and primitive plants, as well as fungi and 223 fauna species, their distribution, number and population trends.