Caucasian State Nature Biosphere Reserve

Maykop, Russia

Caucasian State Nature Biosphere Reserve

Maykop, Russia
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Snegovaya N.Y.,Azerbaijan Academy of Sciences | Chumachenko Y.A.,Caucasian State Nature Biosphere Reserve
Contemporary Problems of Ecology | Year: 2013

This article reviews data on studies devoted to the seasonal changes of the opiliones populations in the yew and box tree grove of the Caucasian State Nature Biosphere Reserve. This study touches upon the structure of populations, seasonal changes in populations, and gives data on opiliones distribution and occurrence. © 2013 Pleiades Publishing, Ltd.


Trepet S.A.,Caucasian State Nature Biosphere Reserve | Eskina T.G.,Caucasian State Nature Biosphere Reserve
Zoologicheskii Zhurnal | Year: 2011

The influence of natural and anthropogenic factors on the dynamics of the number and spatial structure of a red deer (Cervus elaphus maral) population in the Caucasian Reserve was investigated. The high adaptation of deer to the action of the main natural limiting factors (winters with deep show cover and wolves) is noted. The close correlation between the dynamics of the deer population and anthropogenic factors (mainly, poaching) is shown. Biotechnical measures were concluded to be inefficient, and the economic activities and protection systems should be improved at the Caucasian Reserve.


Akatov V.V.,Maikop State Technological University | Akatova T.V.,Caucasian State Nature Biosphere Reserve | Eskin N.B.,Caucasian State Nature Biosphere Reserve
Contemporary Problems of Ecology | Year: 2014

The occurrence of a density compensation effect (DCE) has been estimated in north Caucasian areas of extreme habitats occupied by communities of vascular plants, mosses, and lichens. The species densities have been estimated according to their frequency. The correlation between species number and frequency in the studied areas has failed to confirm the assumption that extreme environmental conditions alone is responsibile for the DCE, at least locally. © 2014, Pleiades Publishing, Ltd.


Akatov V.V.,Maikop State Technological University | Akatova T.V.,Caucasian State Nature Biosphere Reserve
Russian Journal of Ecology | Year: 2015

The number and occurrence of plant species are compared in isolated with forest and nonisolated areas of subalpine meadows in Western Caucasus alpine massifs. It is shown that isolation of meadow communities on small isolated massifs (0.01–36.5 km2) for about a thousand years has led to a decline in their species richness. However, this process is mainly due to the loss of rare plant species and was not accompanied by the density compensation effect. It is suggested that a wide manifestation of compensation processes requires a period of time significantly longer than the isolation time for most fragments of anthropogenic communities. © 2015, Pleiades Publishing, Ltd.


Trepet S.A.,Caucasian State Nature Biosphere Reserve | Eskina T.G.,Caucasian State Nature Biosphere Reserve
Biology Bulletin | Year: 2013

The size and structure of the chamois (Rupicapra rupicapra caucasica) population as well as the influence of anthropogenic factors on it were studied on the Caucasian Reserve (Western Caucasus). The negative effect of the snow cover, the thickness of which differed from the usual level, is shown. The effect of winters with thick snow cover is confirmed by the relation between these factors and the proportion of yearlings in the population one year after the winter. An increased death rate of animals in winters with a deep snow cover is observed in the case when their density exceeds the optimal one. Wolf predation does not affect the chamois population on the reserve. The number of wolves increases with an increase in the chamois population density to 15-20 ind./1000 ha. The adverse impact of humans on the chamois population is manifested in the regions with motor roads. The chamois, as compared to the deer, suffers from poachers to a lesser degree because it inhabits inaccessible areas and its trophy value is low. © 2013 Pleiades Publishing, Inc.


Akatov V.V.,Maikop State Technological University | Akatova T.V.,Caucasian State Nature Biosphere Reserve | Eskina T.G.,Caucasian State Nature Biosphere Reserve | Sazonets N.M.,Maikop State Technological University | Chefranov S.G.,Maikop State Technological University
Russian Journal of Ecology | Year: 2013

The occurrence of density compensation effect (DCE) has been estimated in areas occupied by synanthropic communities in the Western Caucasus. The density of dominant plant species has been estimated from their coverage, and that of subordinate species, from their frequency in 0.5-m2 squares within 15 (16)-m2 plots, using natural and seminatural communities as a reference standard. The factual material has been analyzed by the method of numerical experiments. The results show that the transformation of natural habitats into anthropogenic ones has led to a decrease in the species diversity of plant communities, but without causing a widespread occurrence of DCE. It is hypothesized that relatively high average values of species frequency in low-diversity synanthropic communities are more likely accounted for by random rather than compensatory processes. © 2013 Pleiades Publishing, Ltd.


Akatov V.V.,Maikop State Technological University | Akatova T.V.,Caucasian State Nature Biosphere Reserve
Russian Journal of Biological Invasions | Year: 2013

The published data on the resistance of plant communities to invasions of alien species are discussed. It is shown that the variation in the number of such species on small areas of cenoses depends on the balance between their local richness and species pool size. This ratio has been used to predict the degree of invasibility of natural plant communities in Western Caucasus (alpine low-grass meadows and heaths, subalpine middle-grass meadows of high-altitude mountain massifs and ridges isolated or not by forest communities, and tree layer of mountain forests). The results demonstrate that the communities with high species richness, isolated, evolutionarily young, and disturbed in their previous history display a higher invasive potential. © 2013 Pleiades Publishing, Ltd.


Trepet S.A.,Caucasian State Nature Biosphere Reserve | Eskina T.G.,Caucasian State Nature Biosphere Reserve | Bibina K.B.,Caucasian State Nature Biosphere Reserve
Zoologicheskii Zhurnal | Year: 2013

The number and structure of the tur (Capra caucasica Guldenstadt et Pallas, 1783) population were studied at the Caucasian Reserve (the western Caucasus). The effect of natural and anthropogenic factors on this population was assessed. Fourteen local tur groups were combined in three ones based on the similarity of the long-term dynamics of the tur number. An adverse influence of winters, when the snow depth exceeded its average value, on the tur population was revealed. Snowy winters affect not only males that perish under snowglides; they are also reflected in the birth rate: the share of females and young of the current year decreases in two years after the winter. The effect of snowy winters is shown to manifest itself only at the high density of the animals. The higher the density of the population is before the winter, the more the intense decline in its density is observed. In a year, this trend became weaker. The wolf predation did not affect the tur population at the reserve. The tightest correlation between the density of tur and that of wolf was found at the density of tur of 50 ind./1000 ha. The further increase in the density of tur was irrelative of the wolfs density. Turs at the reserve are inaccessible for poachers; therefore, the role of poaching in the dynamics of their number is insignificant.


Trepet S.A.,Caucasian State Nature Biosphere Reserve | Eskina T.G.,Caucasian State Nature Biosphere Reserve
Zoologicheskii Zhurnal | Year: 2012

The number and structure of the chamois (Rupicapra rupicapra caucasica) population, as well as the influence of anthropogenic factors on it were studied at the Caucasian Reserve (the Western Caucasus). A negative effect of the snow cover, the thickness of which differs from the usual level, is shown. The effect of winters with thick snow cover is confirmed by the relation between these factors and a share of yearlings in the population in a year after the winter. The elevated death rate of animals in winters with deep snow cover is observed in the case when their density exceeds the optimal one. Wolf does not affect the chamois population at the reserve. The number of wolves increases with growing the density of the chamois population up to 15-20 ind./l000 ha. The role of wolf in the dynamics of ungulate animal populations is quite restricted. The negative influence of human on the chamois population is manifested in the regions with motor roads. As a whole, chamois, as compared to deer, suffers from poachers to a lesser degree due to its lower density and inaccessible areas, where it habits.

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