scholarly journals The floristic differentiation of microhabitats within kurgans in the desert steppe zone of southern Ukraine

2011 ◽  
Vol 77 (2) ◽  
pp. 139-147 ◽  
Author(s):  
Barbara Sudnik-Wójcikowska ◽  
Ivan I. Moysiyenko
Keyword(s):  
Low Frequency ◽  
Floristic Composition ◽  
Steppe Zone ◽  
The Black Sea ◽  
Desert Steppe ◽  
Steppe Species ◽  
Number Of Species ◽  
The North ◽  
Stellarietea Mediae ◽  
Meadow Species

Results of the studies on the floristic biodiversity of the kurgans in the Pontic desert steppe of the Black Sea Lowland (Kherson Region) are presented. Twenty-six of about 130 kurgans higher than 3 m, distributed over an area of approx. 1500 km<sup>2</sup>, were surveyed and the flora of 5 microhabitats within every kurgan (top, southern and northern slope, southern and northern foot) was examined. The richness of the kurgan flora is estimated at 305 species. Species of alien origin constituted 23% of the total flora, which indicates limited anthropogenic influence. Species of two classes, <em>Festuco-Brometea</em> and <em>Stellarietea mediae</em> were predominant, which also confirmed the semi-natural character of the kurgan flora. The lowest number of species was recorded on top, which was relatively rich in synanthropes, particularly therophytes (<em>Stellarietea mediae</em>). The north side was richer in species than the south side of the kurgans. Steppe species were the most stable and important component of the flora of the slopes (45-47% of the species represented the class <em>Festuco-Brometea</em>). The total flora of the foot contained more species and was more diversified than the flora of the slopes (although the mean number of species was similar in both habitats), but each species occurred at low frequency. There was a higher proportion of species which were introduced from the area surrounding the kurgans, e.g. weeds, halophytes, meadow species, as well as trees which are rarely found in the desert steppe zone. In spite of the small size of the kurgans, significant differences between the floristic composition of the various microhabitats were detected.

scholarly journals Zonal character of the flora of kurgans in central and southern Ukraine

2010 ◽  
Vol 17 (1) ◽  
pp. 47-52 ◽  
Author(s):  
Barbara Sudnik-Wójcikowska ◽  
Ivan Moysiyenko
Keyword(s):  
Selection Criteria ◽  
Steppe Zone ◽  
Life Forms ◽  
Forest Steppe ◽  
Desert Steppe ◽  
The West ◽  
The North ◽  
Vegetation Zones ◽  
Floristic Studies ◽  
Southern Ukraine

Zonal character of the flora of kurgans in central and southern UkraineIn the years 2004-2010 floristic studies were carried out on kurgans in 4 different climatic/vegetation zones: 3 steppe zones (west and central Pontic desert steppe, west Pontic grass steppe, west and central Pontic herb-rich grass-steppe) and a forest steppe zone. Among the 450 kurgans surveyed, 106 barrows met the selection criteria. The species composition and the contribution of different life forms to the flora of kurgans changed along the north-south gradient. Jaccard's similarity coefficient and Wards clustering method were used to compare the qualitative composition of flora in particular zones. The results of this comparison confirmed floristic differences between kurgans located in the four zones. Kurgans in the desert steppe zone proved to have the most distinct flora among the floras considered. The biggest similarities were found between the flora of kurgans in the forest steppe zone and that of barrows in the west and central Pontic herb rich grass steppe.

scholarly journals NEW DATA ABOUT THE FAUNА OF ORIBATID MITES (ORIBATIDA) OF THE NORTH CAUCASUS

2018 ◽  
Vol 13 (2) ◽  
pp. 52-63
Author(s):  
Umukusum Ya. Shtanchaeva ◽  
Luis S. Subias ◽  
Aleksandr M. Kremenitsa
Keyword(s):  
Species Diversity ◽  
Salt Marshes ◽  
Steppe Zone ◽  
Oribatid Mites ◽  
North Caucasus ◽  
Forest Zone ◽  
Subalpine Meadows ◽  
Number Of Species ◽  
The North ◽  
First Time

The purpose of this work is to publish new data on the species composition of oribatid mites in the North Caucasus, which will make possible to clarify the destribution of the oribatids of the world fauna region. The material was collected in 2003-2009, according to generally accepted methods, in 23 habitats in the territory of Adygea, Dagestan, Kabardino-Balkaria and the Krasnodar Territory in various altitudinal levels: in alpine and subalpine meadows, in mountain forests of various types (birch, pine, beech or mixed), mesophytic meadows in the forest zone, in xerophytic shrubs and mountain steppes, floodplain meadows and salt marshes of the semidesert biotopes of the lowland zone. Results. There were found 349 species of the oribatid mites from 158 genera and subgenera belonging to 62 families. Forest habitats are characterized by the greatest species diversity, there are found 232 species of oribatids. In the alpine and subalpine meadows 158 species are noted, 71 species are found in the mountain steppe zone, 47 species in the salt marshes of the semidesert zone, and 7 species in the floodplain meadows. For the first time in the Caucasian region one genus Novosuctobelba Hammer, 1977 and 29 species of the oribatid mites are registered, founded earlier only in Japan, China, Somalia and some countries of the Mediterranean. There are 14 new taxa for science: 12 species and 2 subspecies. Conclusion. In 23 biotopes of 18 geographical points of the Northern Caucasus 349 species of the oribatid mites from 158 genera and subgenus and 62 families were found. The number of species found in the biotopes of different altitude zones corresponds to the basic patterns of distribution of oribatids in mountain ecosystems: the biotopes of the forest zone are characterized by the greatest species diversity, the number of species in the soils of alpine and subalpine meadows and biotopes of the mountain-steppe zone is somewhat lower, the smallest number of species is found in the semidesert zone. For the first time in the Caucasian region one genus and 29 species of oribatid have been recorded, which allows to expand the areology of some species of the oribatid mites. There are 14 new taxa for science.

scholarly journals Structural comparative analysis of forest and steppe plant communities in the south of Kryvyi Rih region

2018 ◽  
Vol 26 (4) ◽  
pp. 316-326
Author(s):  
N. Y. Shevchuk
Keyword(s):  
Comparative Analysis ◽  
Floristic Composition ◽  
Grazing Pressure ◽  
The Black Sea ◽  
Species Number ◽  
Forest Communities ◽  
The South ◽  
Steppe Species ◽  
Steppe Communities ◽  
Sea Area

We made a comparative analysis of the floristic structure of 11 various-aged (30–50-year-old) forest and four steppe communities in the south of Kryvyi Rih region. We ascertained that the forest communities have low specific richness (2–90 species), whereas steppe ones contain from 167 to 251 species. The ten families leading in the species number are: Asteraceae, Poaceae, Rosaceae, Fabaceae, Lamiaceae, Caryophyllaceae, Boraginaceae, Apiaceae, Brassicaceae and Polygonaceae. Specific representation of the steppe communities depends on the geomorphologic formation, grazing pressure, soil cover composition; respective order of families differs slightly: Asteraceae, Poaceae, Fabaceae, Rosaceae, Scrophulariaceae, Lamiaceae, Caryophyllaceae, Brassicaceae, Apiaceae, Boraginaceae. The core of the geographical structure of forest vegetation is the species with a palaearctic type of range (30.3–54.5%), and in the steppe, species with the Black Sea area group (15.6–24.0%). The second and the third most numerous in forest groups are groups of species of transitional areas (3.6–23.3%) and holarctic species (7.0–17.2%). In the steppe communities, almost the same proportions are formed by the species of the palaearctic group and the plants of group of transitional areas (15.8–23.1% and 18.3–21.7% respectively). We revealed that in the forest and steppe communities the most numerous group in the spectra is the biomorph of hemicryptophytes (25.6–42.4% and 45.8–47.0% respectively). According to the structure of the above-ground shoots, identical proportions are formed by rosetteless and semi-rosetted species (38.3–60.5% and 37.2–56.7% respectively) in the forest communities, and semi-rosetted species (47.4–49.1%) in the steppe ones; as for the type of structure of underground shoots in forest communities, species without special underground formations (33.3–65.1%) and caudex formations (18.6–36.4%) prevail, and, in the steppe communities – caudex species do (39.1–47.9%); xeromesophytes (33.3–100%), and mesoxerophytes (32.9–40.6%) dominate in the hygrospectra of forest and steppe communities respectively; in heliospectra, there is the predominance of heliophytes (62.3–97.1% and 50.8–67.5% respectively); in trophoscopes, the mesotrophs are prevalent (57.1–98.4% and 47.0–52.1% respectively). The ecological and coenotic spectrum of forest communities is characterized by the domination of synanthropophants (36.3–58.6%), and in steppe ones – steppants (51.8–55.0%). We revealed the similarity of the floristic composition of forest and steppe communities (6.8–39.4%), and the largest index is noted for the plot with a strict nature reserve regime (19.4–39.4%). In forest communities, this value is 15.6–66.7%, and it varies in different-aged plantations of the same species. The analysis shows that there are significant differences in the floristic and biomorphological composition of forest and steppe communities; it confirms the concept of O.L. Belgard on the environment transforming function of artificial steppe forests, changing the biotic circulation, which is inherent in the steppes.

Communities of the class Festuco-Puccinellietea Soó ex Vicherek 1973 on the territory of Eurasia

2005 ◽  
pp. 59-75 ◽  
Author(s):  
V. B. Golub ◽  
D. N. Karpov ◽  
A. N. Sorokin ◽  
L. F. Nikolaychuk
Keyword(s):  
Plant Communities ◽  
Floristic Composition ◽  
Steppe Zone ◽  
Point Of View ◽  
The Black Sea ◽  
Zonal Vegetation ◽  
Eurasian Steppe ◽  
Rivers And Lakes ◽  
Don River ◽  
Vast Area

A survey and revision of the highest syntaxa of the class Festuco-Puccinellietea with the exception of plant communities attributed to the class Scorzonero—Juncetea gerardii are submitted. Communities of the Festuco-Puccinellietea are inland intrazonal stands of Eura­sia on solonetz soils, most common in flat lowlands as well on the rivers and lakes terraces that are briefly flooded in spring-time, and dry for the most part of the growing season. The diagnostic species combi­nation of the class is heterogeneous. It includes Arte­misia dwarf semi-shrubs of the Seriphidium section that are widely spread in the Iran-Turan subregion of the Sahara-Gobi area. These are also Limonium species that are mostly diverse in the Mediterranean region where from these taxa could move into inland areas with solonetz soils. The Festuca taxa of the section Festuca together with Poa bulbosa have probably moved on solonetz soils from adjoining steppes. The halophytic Puccinellia taxa of Xeratropis and Puc­cinellia sections could penetrate into Festuco-Puccinellietea communities from the banks saline pools. The floristic composition of the class in question gives the bright example of the net-shaped evolution of plant communities according to Whittaker (1980). The distri­bution area of Festuco-Puccinellietea communities lies within the Black Sea-Kazakhstan subregion of the Eurasian Steppe region according to the subdivision of the Ancient Mediterranean by Lavrenko (1962, 1970а). There are no communities that could be placed in Festuco-Puccinellietea in Central Asia, at least the authors were not lucky to find any signs of these in references. The closest to this class are the communities of Achnatheretea splendentis, however their floristic composition and ecology are significantly different. Within the whole area of their distribution the Festuco-Puccinellietea communities are neighboring with those of Scorzonero—Juncetea gerardii occupying shallow depressions, while in the steppe zone they occur close to zonal phytocenoses on placor belonging to Festuco-Brometea. There is no idea what kinds of semidesert zonal vegetation are contiguous with Festuco-Puccinellietea communities because it is still been poorly studied from the point of view of the Braun-Blanquet approach. Syntaxa that belong to Festuco-Puccinellietea are so far poorly studied on the vast area of Ukraine, as well as Krasnodar and Stavropol regions, the Don River basin, the territory between the Don and Volga rivers of Russia, and Northern Kazakhstan.

Small-leaved herbaceous forests in galley and ravine systems of Priobskoe plateau (West Siberia)

2012 ◽  
pp. 78-95 ◽  
Author(s):  
N. N. Lashchinskiy ◽  
N. V. Lashchinskaya
Keyword(s):  
Floristic Composition ◽  
West Siberia ◽  
Steppe Zone ◽  
Forest Steppe ◽  
Anthropogenic Pressure ◽  
Forest Patches ◽  
Steppe Species ◽  
New Associations ◽  
Geographical Position ◽  
Forest Distribution

Small-leaved forests of the galley and ravine systems on the Priobskoe plateau (West Siberia) belong to the Brachypodio pinnati–Betuletea pendulae class and the Calamagrostio epigei–Betuletalia pendulae order. All forest types were classified according to the Braun-Blanquet approach. Three new associations and four subassociations were described. Floristic composition presented by mixture of forest, meadow and steppe species reveals the geographical position and the environmental conditions of forest habitats. Forest distribution depends on the slope exposition and steepness. In spite of strong anthropogenic pressure many of forest patches could be considered as refuges of natural biodiversity in forest-steppe zone.

Neolithic and Bronze Age cultural communities of the steppe zone of the USSR

Antiquity ◽  
1989 ◽  
Vol 63 (241) ◽  
pp. 793-802 ◽  
Author(s):  
V. Dergachev
Keyword(s):  
Bronze Age ◽  
Steppe Zone ◽  
The Black Sea ◽  
Forest Zone ◽  
The Caucasus ◽  
The North ◽  
Eurasian Steppe ◽  
Historical Factors ◽  
Soviet Central Asia ◽  
Distinguishing Features

The culture-historical development of Neolithic and Bronze Age communities under Eurasian steppe conditions is indissolubly linked with the establishment and development of early forms of productive economy, and displays a number of distinguishing features, which are the product of both natural and historical factors.Within the USSR, the steppe extends from the mouth of the Danube to the upper reaches of the Ob and the Altai mountains (Milkov 1977). To the north, the steppes naturally grade in to the forest zone to form a belt of transitional foreststeppe landscape. To the south, the steppe is bounded by the coast of the Black Sea, the foothills of the Caucasus and beginning in the Lower Volga region the semi-deserts and, further south, deserts of Soviet Central Asia.

scholarly journals Contribution to the knowledge of the fauna of the long-tongued bees (Hymenoptera, Apoidea: Megachilidae, Apidae) in the north of the Arkhangelsk Region

2019 ◽  
Vol 19 (3) ◽  
pp. 99-105 ◽  
Author(s):  
GS Potapov ◽  
YuS Kolosova
Keyword(s):  
Apis Mellifera ◽  
European Part ◽  
The Arctic ◽  
Ecological Group ◽  
Arkhangelsk Region ◽  
Number Of Species ◽  
The North ◽  
European Part Of Russia ◽  
Meadow Species ◽  
Regional Fauna

This article is devoted to a study of the fauna of the long-tongued bees in the north of the Arkhangelsk Region, which is located in the northeast of the European part of Russia, but excludes the Arctic islands. This group includes the bees of the families Megachilidae and Apidae. Forty-four (44) species of bees were found in this region. Most of them (29) are bumblebees (genus Bombus). Fourteen (14) species are megachilid bees (genus Osmia, Coelioxys and Megachile) and one species is Apis mellifera. The largest number of species (39) was recorded in the lower reaches of the Northern Dvina River, due to the long research on this territory. The lowest number of species (16) was recorded in the Mezensky District. In the north of the studied region, the tundra species of B. lapponicus is only presented for the Mezensky District. Many species of bumblebees in the regional fauna belong to the ecological group of the meadow species. These are B. soroeensis, B. ruderarius, B. rupestris and a number of others. They are typical for meadow and ruderal habitats, and are usually not presented in the native taiga habitats. These meadow species are widely represented in the valleys of large rivers, such as the Northern Dvina, the Onega, and the Mezen. Compared to bumblebees, megachilid bees are much rarer in the north of the Arkhangelsk Region. Apis mellifera is presented in the lower reaches of the Northern Dvina River, but here it is rare, compared to the southern part of the Arkhangelsk Region.

scholarly journals FEATURES OF CHANGES IN THE NUMBER AND DENSITY OF RODENTS IN MOSAIC AGRICULTURAL LANDSCAPE OF NORTH-WESTERN BLACK SEA IN 1961-2016

2017 ◽  
Vol 73 (1) ◽  
pp. 20-24
Author(s):  
S. Sushko ◽  
I. Nakonachnuj
Keyword(s):  
Black Sea ◽  
Agricultural Landscape ◽  
Steppe Zone ◽  
Agricultural Landscapes ◽  
The Black Sea ◽  
Black Sea Region ◽  
The North ◽  
Dry Steppe ◽  
Anthropogenic Development ◽  
North Western

Reflects the results of the stages of the study of bioclimatic and landscape-nanotechnik characteristics of the steppe zone of the North-Western part of the black sea region, as the formation of mosaic agrozootehnice mixed natural agroinnova Genesis. It is recommended to differentiate the dry steppe pjone only the territory South of the interfluve of the Dniester-Dnieper. A retrospective analysis allowed to argue that a significant amount of anthropogenic development in the process of transformation of the steppes into agricultural lands, stimulated a radical break with zonal ecosystems. This transformation of biocenosis occurred against the background of climate aridization and under the influence of anthropogenic actions. A structured approach to analytical generalization allowed to update selected issues and became the basis for the study. The obtained results allowed axiomatic to say about the deterioration of the conditions of existence for the available biotic complex, and also significantly affects the seasonal conditions of existence of rodents in the field of agricultural landscapes, directly and indirectly limiting their population status.

scholarly journals Spatial distribution of land molluscs fauna of the steppe zone of Ukraine

2018 ◽  
Vol 28 (4) ◽  
pp. 131-138
Author(s):  
N. V. Gural-Sverlova
Keyword(s):  
Black Sea ◽  
Steppe Zone ◽  
The Black Sea ◽  
The Caucasus ◽  
North West ◽  
The North ◽  
Black Sea Coast ◽  
The Crimea ◽  
Sea Coast ◽  
Land Molluscs

At the end of the XX - beginning of the XXI century 85 species of the land molluscs of 49 genera and 25 families were reliably registered in the steppe zone of Ukraine. The highest species richness was recorded in the northern steppe subzone (79 species). The main centers of the species diversity are the Donetsk Upland (65% of the total number of species) and the western part of the Black Sea Lowland with the southern spurs of the Podolian Upland adjoining it (55%). The modern composition of the land molluscs fauna of the steppe zone is influenced by the proximity of the Caucasus (for the south-east of Ukraine), the Podolian Upland (for the north-west Black Sea coast) and the Crimea (for the entire investigated territory). Anthropochory plays an important role in the formation of the land molluscs complexes in the steppe zone of Ukraine.

The influence of submesoscale eddies on hydrochemical parameters and structural and functional characteristics of phytoplankton in the north-eastern part of the Black Sea

2019 ◽  
pp. 24-40
Author(s):  
Sergey B. Kuklev ◽  
Vladimir A. Silkin ◽  
Valeriy K. Chasovnikov ◽  
Andrey G. Zatsepin ◽  
Larisa A. Pautova ◽  
...  
Keyword(s):  
Anticyclonic Eddy ◽  
The Black Sea ◽  
Hydrochemical Parameters ◽  
North East ◽  
The North ◽  
Seasonal Thermocline ◽  
North Eastern ◽  
Quantitative Indicators ◽  
The City ◽  
North Eastern Part

On June 7, 2018, a sub-mesoscale anticyclonic eddy induced by the wind (north-east) was registered on the shelf in the area of the city of Gelendzhik. With the help of field multidisciplinary expedition ship surveys, it was shown that this eddy exists in the layer above the seasonal thermocline. At the periphery of the eddy weak variability of hydrochemical parameters and quantitative indicators of phytoplankton were recorded. The result of the formation of such eddy structure was a shift in the structure of phytoplankton – the annual observed coccolithophores bloom was not registered.

Sign in / Sign up

Export Citation Format

Share Document