**6. Biology of conservation**

In terms of conservation biology, all species in our study area are protected in Algeria and have a heritage status on the IUCN Red List. The major threats to which they are subjected are mainly of an anthropogenic nature, all the roosts have been more or less affected, the caves are overcrowded in summer and they are subject to disturbance by the activities of the public works services and the widening of roadways. Some old cellars have been restored without taking into consideration the presence of bats and sometimes even demolished. Others are obstructed by buildings, the other roosts, the majority of which are forested, are spared by the direct action of man, but are threatened by repeated fires.

On the basis of this observation, we propose protection measures for sites of interest and, lastly, we propose a succinct action plan for Chiroptera that can be used as a management tool for the managers of the various departments concerned with the conservation of sites of interest and the environment. This action plan will have as a first action, the census of bat houses at a national level, then a follow-up of an inventory of the species, which will give us an overview of the Algerian chiropterological inheritance and will allow us to take adequate measures of protection. For this, a non-governmental organization was created to work on the protection of bats, its name is ALGERIAN BAT GROUP, and it works on the promotion of the knowledge of the beneficence of this species of mammal.

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