Study of the Effect of Antibiotics of Various Groups on the Nitrification Activity of Sod-podzolic Soil by the Method of Laboratory Modelling

An increase in the number of drugs, including antibiotic substances entering the environment, necessitates studies of their impact on the functioning of ecosystems. In the global cycle of substances, the nitrogen cycle is one of the main processes. An important role is played by the nitrification process. For the first time, the effect of antibiotics of different groups: oxytetracycline, tylosin, benzylpenicillin on the nitrifying activity of sod-podzolic soil under their individual and combined exposure by laboratory modeling, was studied.

Accumulation of Heavy Metals and Arsenic in the Leaves of Plantago Major

Voronezh Oblast is traditionally important agricultural and plantgrowing region. The purpose of this study was to examine heavy metal contamination of medicinal plant products of Voronezh Oblast using the leaves of Plantago major L. that were collected in urban and agricultural ecosystems, exposed to anthropogenic impacts. The analysis was carried out using atomic absorption spectrometer MGA-915 MD, according to pharmacopeial methods. Accumulation of heavy metals (cadmium, chromium, cobalt, copper, lead, mercury, nickel, zinc) and arsenic in 51 samples of P. major leaves was evaluated.

Еcological State of Soil in the System “Soil – Forest Plants”

The article considers the ecological state of the soil in the system: soil-forest plantations. Forest plantations enhance environmental sustainability and productivity in the soil-plant system, contributing to the optimization of physical properties and soil regimes. Improving the physical and water-physical properties of the soil, increases the water reserves in the soil, increases the processes of humification, restoration of potential and effective soil fertility. In the soil of the forest zone, the proportion of organic colloids increases due to root and plant residues.

Abundance Dynamics of European Badger (Meles meles L.) in the Saratov River Bank for 2011–2018

European badger Meles meles (Linnaeus, 1758) – is the largest representative of the marten family in the European part of Russia. The eastern part of the range of the European subspecies M. meles meles, which was the study area, is confined to the Saratov Right Bank. The site is characterized by a variety of biotopic, orographic and anthropogenic conditions that affect the number of badgers, their spatial distribution over the territory and population structure. The article analyzes the number of European badgers that live on the territory of the Saratov Right Bank.

Assessment of Radionuclide Pollution of Medicinal Vegetable Raw Materials of the Voronezh Region on the Example of Flowers of Pizhma Ordinary

The Voronezh region traditionally is the most important region of crop production and agriculture. A research objective was the study of pollution by natural and artificial radionuclides of medicinal vegetable raw materials in the Voronezh region on flowers of a tansy ordinary, collected across all territory of the area in urbo-and the agroecosystems which are affected by various anthropogenic influence.

Adaptive Variability of Willow White (Salix alba L.) in the Conditions of Technogenic Pollution of the Environment (South Ural Region)

The peculiarities of adaptation and variability of Salix alba L. at the morphological level were studied in extreme natural and technogenic conditions of the Southern Urals. It was found that Salix alba is characterized by a wide ecological valence, and in terms of morphological variability – is stable morphological structure. The influence of geographical, climatic and anthropogenic factors on the level of morphological integration of Salix alba was revealed.

The Impact of Aquatic Environments with Dissolved Synthetic Surface-Active Substances on Aquatic Plants

Based on the identification and characteristics of the response of aquatic plants to spav-containing drugs, the potential danger of possible contamination of the aquatic environment with spav was assessed. The extent of damage from the effects of spavcontaining drugs on aquatic plants was determined using aquatic plants Elodea сanadensis Michx.(1802), Potamogeton perfoliatus L. (1753), Myriophyllum spicatum L. (1753), Najas minor All. (1773) and Lemna minor L. (1753).

Bacteria Fouling in the Systems of Technical and Circulating Water Supply of the Novovoronezh Nuclear Power Station

The paper presents the results of a study of microorganisms involved in the biofouling of technical and recycled water supply systems of the Novovoronezh nuclear power plant. Sampling was carried out at the following facilities: onshore pumping station (BPS), engine room (MH), spray pool (BB), central pumping station (CNS). The number of microorganisms that make up biofilms varied from 104 to 107 microbial cells in 1 ml. The species diversity at each object is represented by 2 to 3 types of bacteria.

Ontogenetic Tactics and Strategies of Oxycoccus palustris Pers. Survival in Boggy Ecosystems of Taiga Zones (Kirov Region)

The paper presents the results of studies of Oxycoccus palustris Pers. ontogenetic tactics and strategies expressed in various types of boggy phytocoenoses of the taiga zone in the Kirov region. The morphometric variability analyses of O. palustris in studied coenopopulations showed that most of parameters vary significantly. According to vitality index (IVC) the most favourable conditions are presented in mesotrophic cotton-grass sphagnum bog and oligotrophic sphagnum bog where the index was maximum – 1.04.

Long-Term Monitoring of Macrozoobenthos in the Reservoir-Cooler of Balakovo NPP

For 8 years (2011–2018) macrozoobenthos samples were taken at the permanent stations in the reservoir-cooler of Balakovo NPP. Sampling stations were located in a highly heated part of the reservoir-cooler of the Balakovo NPP, and poorly heated part, in the adjacent water area of the Saratov reservoir. Differences were revealed: species richness and diversity; numbers and biomass; saprobity indices of the areas of these reservoirs; a positive or negative trend of long-term dynamics of the studied indicators macrozoobenthos.