Экология

The article contains information about taxonomic and ecological structure of nidicolous beetles of national park «Khvalinsky» (Saratov Province). The aspects of nidicolous fauna degradation associated with leaving marmots their burrows were traced. Revealed a clear separation of spring and summer faunas of burrowing insect communities.

Results of the taxonomic, biomorphological and coenotic analyzes phytocenoses with participation Hedysarum grandiflorum Pall. in the southern of the Volga Uplands are given. Showing considerable diversity and high conservation importance of these plant communities.

The article presents the materials of the distribution of five species of the Lemnaceae in the Saratov region on the basis of materials of herbarium SSU (SARAT) and authors’ field notes.

The article contains information about the reliable finding of black widow (Latrod ectus tredecimguttatus) on the territory of Saratov Province.

The article contains information about the reliable finding of black widow (Latrod ectus tredecimguttatus) on the territory of Saratov Province.

This article devoted to the patterns of Adonis wolgensis coenopopulations in the Saratov region. The number of coenopopulation, habitats  ecology, ontogenetic structure and the degree of anthropogenic transformation are considered. .

The investigated stands of Betula pendula, Populus balsamifera, Tilia cordata, Larix sukaczewii, Picea abies. Karst in residential-recreational area of Sterlitamak industrial center. When collecting and processing factual material used generally accepted methods of studying of forest stands. Instrumental produced (diameter, height, age) and visual indication (the density of the crown, the degree of damage to leaves, dead branches) of diagnostic parameters. An estimation of the relative vitality of trees.

The article presents data on the assessment of the state of higher aquatic plants cooling reservoir Balakovo NPS under the influence of biomeliorative fishes. It was revealed that the species diversity of higher aquatic vegetation for the period of study has sharply decreased from 34 (2009) to 12 species (2015). The dominant species, which defines the image of plant communities, is common reed (Phragmites australis (Cav.) Trin. Ex Steud). Reed communities are rated as very highly productive in terms of net primary production.

Considered the economic and environmental aspects of the use of fuel-containing waste as alternative fuel (RDF) in the cement industry on the example of JSC «Serebryakovcement».

We would like to provide results of examination of community landscape at four landmarks located in the central part of the city of Saratov (Detskiy Park and three parkways: at Rakhova street, Astrakhanskaya street and Kosmonavtov embankment). The list of diverse species of trees and shrubs includes 58 species from 38 geni and 20 families. We have found out that species diversity of general purpose community landscapes increases gradually. We have studied biometric parameters of the trees (height, trunk diameter, crown diameter) and their life status.