Izvestiya of Saratov University.
ISSN 1816-9775 (Print)
ISSN 2541-8971 (Online)

National Park «Khvalynsky»

Materials to the Study of the Lichen Flora of the National Park «Khvalynsky» (Saratov Region)

The article presents the results of lichens’ research of the National Park «Khvalynsky» in 2011–2013 and data processing of herbarium collection SARAT and other researchers. The annotated list is pre- sented. It includes 65 species. Among them one specie (Cladonia acuminata) is new for the Saratov Region, two species (Cladonia decorticata, Cl. botrytes) are new for the Privolzhskaya Upland.

Biology Features of Ants (Hymenoptera, Formicidae) in the National Park «Khvalynsky» (Saratov Region)

Ants are essential component of ecosystems. Their success is due to the social organization, the ability to alter habitat and use a variety of food resources. Food objects of ants are not large invertebrates, seeds of plants and honeydew aphids. The activity of ant in community dedicated to different time slots. We have founded the dominant group of ants in size in the studied associations (Tetramorium caespitum – in forest; Lasius alienus and species of the genus Myrmica – in steppe). Installed the fauna of 5 living in the ant nests of studied species.