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.

East Black Sea forb-bunchgrass steppes of the Don River basin (within Rostov region)

2012 ◽  
pp. 27-47
Author(s):  
O. N. Demina
Keyword(s):  
Black Sea ◽  
Floristic Composition ◽  
The Black Sea ◽  
East European ◽  
Community Associations ◽  
Azov Sea ◽  
Significant Difference ◽  
Steppe Communities ◽  
Don River ◽  
Sea Area

The studied steppe communities to the east of the Black Sea were attributed to the alliance Festucion valesiacae and two suballiances: Festuco rupicolae—Stipenion pennatae and Phlomenion pungentis. A comparison of the floristic composition of the described associations: Trifolio alpestris—Stipetum tirsae, Artemisio marschallianae—Stipetum dasyphyllae and Bellevalio sarmaticae—Stipetum pennatae, belonging to the suballiance Festuco rupicolae—Stipenion pennatae, and communities of the east European meadow steppe, shows their significant difference. The described associations are neighboring ones to these of the suballiance Phlomenion pungentis which represents the true steppes of the Azov Sea area, Donetsk oblast (Saitov, Mirkin, 1991 : 92). Plant community associations such as Plantagini urvillei—Stipetum tirsae and Stipetum lessingianae were attributed to the suballiance Phlomenion pungentis.

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.

Petrophytic feather-grass and thyme steppes in the south-east of the Kursk Region (within the limits of the Oskol river basin)

2009 ◽  
pp. 49-62
Author(s):  
A. V. Poluyanov
Keyword(s):  
River Basin ◽  
The South ◽  
Steppe Species ◽  
New Associations ◽  
Typical Steppe ◽  
Steppe Communities ◽  
Steppe Plants ◽  
Feather Grass ◽  
Kursk Region ◽  
Chalk Outcrops

The paper deals with 2 new associations, represen­ting the petrophytic steppe communities described from the Oskol river basin (Kursk Region), Gypsophilo altissimae—Stipetum capillatae ass. nov. and Carici humilis—Thymetum calcarei ass. nov. First asso­ciation is included into the alliance Astragalo-Stipion Knapp 1944. The communities of this alliance are represented by the most xerophytic variant of the feather-grass steppes of Kursk Region and they are characterized by the combination of obligatory calci­philous and typical steppe plants. Second association is included into the alliance Centaureo carbonatae—Koelerion talievii Romaschenko, Didukh et Solomakha 1996 of the order Festucetalia valesiacae Br.-Bl. et Tx. 1943. The alliance comprises petrophytic thyme steppe communities on chalk outcrops (mostly in the southern slopes) and on hill’s tops. The commu­nities are characterized by the dominance of obligatory calciphilous and petrophilous steppe species. The communities of this alliance are widely spread in the Oskol River basin in the southern part of the Middle-Russian Upland.

Segetal vegetation of the South Urals: the alliances Caucalidion Tx. ex von Rochow 1951 and Lactucion tataricae Rudakov in Mirkin et al. 1985

2019 ◽  
pp. 118-134
Author(s):  
G. R. Khasanova ◽  
S. M. Yamalov ◽  
M. V. Lebedeva ◽  
Z. Kh. Shigapov
Keyword(s):  
Steppe Zone ◽  
Species Number ◽  
Central Position ◽  
South Urals ◽  
Forest Steppe ◽  
The South ◽  
Row Crops ◽  
Winter Cereals ◽  
Weed Communities ◽  
Chernozem Soils

Segetal, or weed, communities are the stands of the weed plant species which are formed under the influence of edafo-climatic conditions and the mode of soil disturbance within the processing of crop rotation (agrotechnical factor) (Mirkin, Naumova, 2012). This paper is the second part of weed community study in the South Ural, assigned to the class Papaveretea rhoeadis S. Brullo et al. 2001, syntaxon unites the weed communities of winter cereals with two orders: Aperetalia spica-venti J. Tx. et Tx. in Malato-Beliz et al. 1960 and Papaveretalia rhoeadis Hüppe et Hofmeister ex Theurillat et al. 1995; and three alliances (Khasanova et al., 2018). Data on diversity, floristic, ecological and spatial differentiation of mesoxeric and xeric weed communities of the alliances Caucalidion Tx. ex von Rochow 1951 and Lactucion tataricae Rudakov in Mirkin et al. 1985 in steppe and southern part of the forest-steppe zones are given (Table 1; Fig. 1). The dataset contains 756 relevés: 647 made by authors during the field seasons of 2002–2018, while 109 taken from published monography (Mirkin et al., 1985). The alliance Caucalidion combines weed communities on rich carbonate chernozem soils in the forest-steppe zone. Diagnostic species are Galeopsis bifida, G. ladanum, Galium aparine, Erodium cicutarium, Persicaria lapathifolia, Silene noctiflora, Thlaspi arvense. This alliance occupies the central position within class between communities of forest zone of the alliance Scleranthion annui and these of the steppe zone of the alliance Lactucion tataricae. The last alliance combines weed communities of the steppe zone and southern part of the forest-steppe one on south and typical chernozem soils. Two species are diagnostic: Lactuca tatarica and Panicum miliaceum. Alliances are differentiated in sample plot species richness and coenoflora: 145 species in alliance Caucalidion coenoflora (mean species number per plot is 16), and 207 species in that of Lactucion tataricae (consequently 13 species). There are 8 associations, 4 subassociations, 6 variants, 1 unrank community within these two alliances, among which 5 associations and all subassociations are new. The alliance Caucalidion includes 4 associations with spatiall and crop differentiation, which are mainly character for the forest-steppe part of the Trans-Urals within the bounds of forest-steppe region of the eastern slope of the Southern Urals. Two associations are new: Cannabio ruderalis–Galeopsietum ladani ass. nov. hoc loco (Table 2; holotypus hoc loco — rele­vé 7) unites weed communities of winter, less often — spring crops; Lycopsio arvensis–Camelinetum microcarpae ass. nov. hoc loco (Table 4; holotypus hoc loco — relevé 3) unites weed communities of row crops, mainly sunflower, less often — cereals. In the same area the communities of the ass. Cannabio ruderalis–Sinapietum arvensis Rudakov in Mirkin et al. 1985 (Table 3) unite the weed communities of mainly winter cereals — wheat and rye. These communities, described in 1980s, previously were widespread in the Trans-Urals (Mirkin et al., 1985), while now occur locally in the northern part of this area. The communities of ass. Centaureo cyani–Stachyetum annuae Abramova in Mirkin et al. 1985, also described in the 1980s, were not found in the 2010s. The diversity of the most xerophytic alliance Lactucion tataricae is represented by 4 associations which occur both in the Trans-Urals and the Cis-Urals. The most common in the last area are weed row crops (beet, nute, flax, sunflower, corn, peas, buckwheat) communities of the ass. Echinochloo crusgalli–Panicetum miliacei ass. nov. hoc loco (Table 5; holotypus hoc loco — relevé 5. They are common in five natural districts: Predbelskiy forest-steppe one, forest and fo­rest-steppe of Belebey Upland, Cis-Urals steppe one, forest and forest-steppe one on Zilair Plateu, and Zabelskiy district of the broad-leaved forests. The weed communities of spring and winter cereals of the ass. Lathyro tuberosi–Convolvuletum arvensis ass. nov. hoc loco (Table 6; holotypus hoc loco — relevé 5) are common only within the Cis-Urals steppe district. The communities of ass. Lactuco serriolae–Tripleurospermetum inodori ass. nov. hoc loco (Table 7; holotypus hoc loco — relevé 2) which unites the weed communities of winter cereals, are common in the steppe zone and the southern part of the forest steppe one of the Trans-Urals and the Cis-Urals within the Cis-Urals steppe, Trans-Urals steppe, and Predbelskiy forest-steppe districts. The communities of the ass. Lactucetum tataricae Rudakov in Mirkin et al. 1985 are associated exclusively with the steppe zone of the Trans-Urals. The Lactuca tatarica community (Table 8), distributed in the steppe and southern part of the forest steppe zones of the Trans-Urals, probably is derived from the ass. Lactucetum tataricae under the intensive chemical weeding of cereal crops. Floristic differentiation of associations is confirmed by the results of the ordination analysis (Fig. 2), the diagram of which shows the distribution of communities along the moisture (first axis) and the complex soil richness–salinity gradient and agrocoenotic factor (second axis).

Wave energy potential and variability for the south west coasts of the Black Sea: The WEB-based wave energy atlas

2020 ◽  
Vol 154 ◽  
pp. 136-150 ◽  
Author(s):  
Bilal Bingölbali ◽  
Halid Jafali ◽  
Adem Akpınar ◽  
Serkan Bekiroğlu
Keyword(s):  
Black Sea ◽  
Wave Energy ◽  
The Black Sea ◽  
The South ◽  
Energy Potential ◽  
Web Based ◽  
South West ◽  
The Web

scholarly journals HEAT SECURITY AND THERMAL REGIME OF SOME TYPES OF NATURAL FOREST COMMUNITIES (AREA OF WIDE-DECIDUAL-CONIFEROUS FORESTS OF THE SOUTH URALS)

ÈKOBIOTEH ◽  
2020 ◽  
Vol 3 (3) ◽  
pp. 429-434
Author(s):  
Yu.P. Gorichev ◽  
◽  
A.N. Davydychev ◽  
I.R. Yusupov ◽  
A.Yu. Kulagin ◽  
...  
Keyword(s):  
Thermal Regime ◽  
Heat Supply ◽  
Southern Urals ◽  
Natural Forest ◽  
Coniferous Forests ◽  
South Urals ◽  
Forest Communities ◽  
The South ◽  
The Southern Urals

The data of microclimatic observations carried out in the area of broad-leaved-coniferous forests of the Southern Urals are presented. The parameters of heat supply and thermal regime of some types of primary plantations are established.

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