Abstract
The study of the nature reserve oak forest near the village of Pelya-Khovanskaya ecosystem was done in the region of Nizhny Novgorod. The investigated wood is unique for its complex structure. It is situated in the forest-steppe zone, characterized by a high species diversity of small mammals and vegetation, which indicates the complexity of trophic and spatial connections. Several series of sample plots were described: 41 of 2020 m and a number of 11 m sites, totaling 300. Abundance of species by Brown-Blanke scale and the number of specimens of adolescence were specified for each 1 sq. m. plot. Mammals were trapped with the help of trapping grooves and transects method. Vegetation cover is characterized by the presence of a clear intra-differentiation as well as the existence of two basic ecologo-coenotic groups/cores - the nemoral (with Pulmonaria obscura Dum. as the center species of the core) and the meadow-fringe. The most distinct group is formed by forest-shoot species. It can be explained by more forest-steppe rather than nemoral nature of vegetation. Small mammals are represented by the following species: common and small shrews, small forest mouse, yellow-throated and field mice and harvest mouse, vole-housekeeper, common, plowed and red voles, European mole. Two species among them - vole-housekeeper and mouse-baby - are listed in the Red Book of the Nizhny Novgorod Region. Matching burrows of mouse-like rodents with soil richness with nitrogen and humidity, two well-defined peaks are observed. The greatest number of burrows is found in places where the soil is high in nitrogen. Moles were found in areas with a large projective coating of Primula veris: coefficient Spearman rank 0,50. There was a negative correlation of the number of moles and vegetation covering of Pyrethrum corymbosum (-0,46), which is the marker of the driest parts in the forest. In general, the nature reserve oak forest near the village of Pelya-Khovanskaya is of considerable interest, both from botanical and from zoological point of view. Long-term studies of biocoenosis will allow to monitor the facility and to correct the proposed protective measures.
Highlights
In this research we studied the dynamics of infestation of ticks with European and Siberian isoforms of tick of tick-borne encephalitis virus collected from 2007 to 2016 from vegetation cover, domestic animals and clothes in Kirov, Kirovo-Chepetsk, Orychevsky, Zuevsky, Slobodsky and Turinsky districts of Kirov Oblast
The analysis revealed the dynamics of the percentage of ticks infected with isoforms of tick-borne encephalitis virus
Наибольшая по сравнению с другими видами средняя значимая корреляция у медуницы свидетельствуют в пользу того, что этот вид – центральный в неморально-лесной группе для изучаемой растительности (в эколого-фитоценотическом аспекте)
Summary
In this research we studied the dynamics of infestation of ticks with European and Siberian isoforms of tick of tick-borne encephalitis virus collected from 2007 to 2016 from vegetation cover, domestic animals and clothes in Kirov, Kirovo-Chepetsk, Orychevsky, Zuevsky, Slobodsky and Turinsky districts of Kirov Oblast. Это уникальный лесной массив со сложной структурой, находящийся в лесостепной зоне Нижегородской области, характеризующийся высоким видовым разнообразием мелких млекопитающих и растительного покрова, что указывает на сложность трофических и пространственных связей. Пеля-Хованская является обыкновенная полевка, в то время как в дубравах Ботанического сада ННГУ и лесопарка «Малиновая гряда» преобладает рыжая полевка.
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