Ecology

New Data on Distribution of Some Protected Species of Plants Saratov Region

The paper presents new data on the distribution of 22 species listed in the Red Book of the Saratov region (2006).

Ecological Distribution and Comparison of the Faunistic Complexes of Heterocera (Lepidoptera, Heterocera) of Various Biotopes and Landscapes of Mordovia

The comparative characteristic of fauna the heterocera (Lepidoptera, Heterocera) typical biotopes and landscapes of Mordovia is carried out. The ecological structure of fauna of the studied territories is given.

In Memory of Linus Pauling (1901–1994)

At the essay long and scientific achievement of Linus Pauling are described. Special attention is paid to the role of ascorbat in the cardiac genesis.

New Data about Syntaxonomic Diversity of Halophytic Vegetation in the Saratov Region

In this article the new halophytic vegetation associations from the territory of far Saratov left Volga bank regions are characterizing. The information about vegetation composition, structure and rare plants species is provided. The recommendations for conservation all new vegetation communities in the new integrated natural monuments of the region are given.

Seasonal Dynamics of Nutrition American Mink (Neovison Vison Schreber, 1777) in the Coastal Zone River B. Irgiz

Spend seasonal estimation diet of American mink on the river B. Irgiz between 2000 and 2011. The basis of nutrition predator: spring – amphibians (24.5% BIO), crayfish (43.1% BIO), mammals (21.3% BIO); summer – fish (29.3% BIO), amphibians (22.6% BIO), mammals (13.3% BIO); autumn – amphibians (43.3% BIO), fish (15.5% BIO), mammals (11.8% BIO); winter – fish (30.8% BIO); mammals (30.1% BIO). The regularities of changes in the composition of the diet in the conditions of anthropogenic load. The highest trophic niche fixed summer (BA = =0.76), the lowest – in the winter (BA = 0.12).

Biotopical Distribution of Orve Beetles (Coleoptera, Staphylinidae) of the Lower Volga Region

The result of study of distribution of rove beetles (Coleoptera, Staphylinidae) in the main types of biotopes of the Lower Volga region during many years in the paper is given. Correlation between ecological features of the region, biotopical distribution and species composition of rove beetles is considered.

Characteristics of Plants Communities with the Participation of HalocnemumStrobilaceum (Pall.) Bieb. in Saratov Region

In this article the characteristic of plant communities with the participation of Halocnemum strobilaceum in Saratov region is considered. The information about vegetation composition, structure and rare plants species is provided. The environmental significance of the territory is evaluated and the recommendations for inclusion it’s in the new integrated natural monuments of the region are given.

To the Question of Conservation of the Unique Halophytic Vegetation of the Saratov Region

In this article the halophytic vegetation characteristic of three unique for the Saratov region territories is considered. The information about vegetation composition, structure and rare plants species is provided. The environmental significance of each territory is evaluated and the recommendations for inclusion it’s in the new integrated natural monuments of the region are given.

Trophobiotic Associations between Ants (Hymenoptera, Formicidae) and Aphids (Hemiptera, Aphidomorpha) in South Zauralye

Trophobiosis with aphids producing honeydew, which is one of the main energetic resources for ants, plays an important role in their life. These are the first data on the trophobiotic as- sociations between ants and aphids in South Zauralye. Investigations were carried out in the most typical biotopes for the region (forest, meadow, steppe and antropogenic biotopes) in 2006–2013. Trophobiotic interactions with aphids are revealed for 17 ant species from two subfamilies: Formicinae (Formica – 7 species, Lasius – 3, Camponotus – 3) and Myrmicinae (Myrmica – 4).

Seasonal dynamics Individual Plot Sizes of Males and Females of the American Mink (Neovison vison Schreber, 1777) in the Saratov Region

The estimation size of individual plots the American mink on the res- ervoirs in Saratov region in the period from 2000 to 2014. The average plot size of males – 30.6 hectares, females – 27.8 hectares. During the cold period on most waters plot sizes are increased almost two- fold. Found that females go farther from the center of the rivers and streams than males (females – 203.8 m; males – 166.7 m). American mink is more inclined to the rivers with wide floodplain (χ2 = 26.2; p = 0.01). River with a narrow floodplain populated predator with lower density (χ2 = 15.3; p = 0.04).

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