Calciphyte steppe communities of the Seim River basin (within the limits of the Kursk Region)

2005 ◽  
pp. 39-49 ◽  
Author(s):  
E. A. Averinova

The paper deals with the calciphyte steppe com­munities of the Seim River basin (Kursk Region), represented by the two new associations, Asperulo cynanchicae—Onobrychidietum arenariae ass. nov. and Achilleo collinae—Astragaletum onobrychis ass. nov., which form a new suballiance Bupleuro falcati—Gyp­sophi­lenion altissimae suball. nov. The diagnostic spe­cies of this unit are Anthemis tinctoria, Bupleurum falcatum, Campanula sibirica, Centaurea pseudomacu­­losa, Gypso­phila altissima, Jurinea arachnoidea, Poa compressa, Polygala sibirica, Salvia stepposa, S. ver­­ticillata, Viola rupestris and the ass. Asperulo-Ono­brychidietum is selected as its holotype. The suballiance comprises calciphyte steppe communities on Cre­ta­ceous marl outcrops in both steep and gentle southern and south-eastern gully slopes, characterized by the combination of calciphyte petrophytes and typical steppe plants. According to the diagnostic species set, the unit is referred to the alliance Festucion valesiacae Klika 1931. The studied communities may be treated as a variant of the petrophytic calciphyte steppes distributed in the south-western part of the Middle-Russian Upland.

2009 ◽  
pp. 49-62
Author(s):  
A. V. Poluyanov

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.


Author(s):  
N.P. Turova

Researchers associate the medieval archeological artifacts of the Middle Trans-Urals, whose pottery bears cord impressions, with the Chiyalik, Molchanvo and Yudina Cultures. Despite the large number of artifacts that have been studied, many questions remain open. These include the status, chronology, and interaction of the Molchanovo and Yudina antiquities, as well as the evolution and specifics of their pottery complexes. Publication and analysis of the ceramic collections from Vak-Kur, the largest burial ground of the Yudina Culture, contribute to addressing some problems related to «the Corded Ware cultures». The Vak-Kur burial ground is dated to the 10th–11th centuries based on the assemblage of the associated goods. It is located in the south-eastern part of the Yudina Culture areal, on the right shore of the Tobol River. For all the time of excavations in the area of the ne-cropolis, 220 burials have been studied. The dead were buried in shallow pits according to the ritual of inhuma-tion, on their backs. A specific feature of the funeral ritual is breaking of a part of the accompanying equipment and use of funerary masks. Decorative and morphological features of 143 Yudina vessels have been examined. The tableware has been categorized according to four topographic groups after excavations 3 to 6. It has been noted that, despite the similar shapes of pots, and ornamental proportions and patterns, the pottery from excava-tions 3 to 6 demonstrates a different frequency in use of such elements in the décor as the cord and figured stamps. The biggest differences were detected between the ceramic artifacts found in excavations 4 and 6. It was suggested that the differences in décor between pottery from different excavations are determined not by their asynchronous nature, but by the existence of several tribal sites in the area of the Yudina necropolis. The com-parison of ceramic collections from the Vak-Kur burial ground with those from the medieval burial and settlement sites of the Yudina Culture showed that the pottery from the necropolis is most closely related to collections from the Plamya Sibiri 6 and 7, and Antonovo 1 settlements located in the Tura River basin. These sites were dated by their investigator to the earlier period (6th to 9th centuries) and attributed to the Molchanovo Culture. Based on the significant similarity between the pottery of the named sites and the dishware of the 10th to 11th centuries from excavation 4 of the Vak-Kur burial ground, a revision of the chronology and cultural attribution of these sites has been proposed.


2011 ◽  
pp. 117-126 ◽  
Author(s):  
S. M. Yamalov ◽  
A. V. Bayanov ◽  
V. B. Martynenko ◽  
A. A. Muldashev ◽  
P. S. Shirokikh

Classification of the petrophytic steppe communities occurring on unique geomorphological formations of the Southern Urals (Bashkortostan Republik) — palaeoreefs (”shikhans“) have been performed. The plant communities were classified and included into two new associations (Minuartiо krascheninnikovii―Festucetum pseudovinae и Trinio muricatae―Centauretum sibiricae). Ecological, geographical, floristic and phytocoenotic characteristics of the syntaxa are discussed.


2013 ◽  
pp. 57-75 ◽  
Author(s):  
N. V. Sinelnikova

Сlassification of mountain tundra of the south-eastern part of Czersky Range (Magadan region) has been carried out according to Braun-Blanquet approach. All communities represent 5 associations, 2 subassociations and 2 variants. New associations Cetrario nivalis–Rhododendretum redowskiani, Cetrario nivalis–Salicetum darpirensis, Cladonio stellaris–Vaccinietum uliginosi and Rhododendro parvifolii–Hedysaretum hedysaroidis, are included into the alliance Loiseleurio-Diapension (Br.-Bl., Siss. et Vlieg. 1939) Daniëls 1982, order Rhododendro-Vaccinietalia Br.-Bl. in Br.-Bl. et Jenny 1931 and class Loiseleurio-Vaccinietea Eggler ex Schubert 1960. Association Oxytropido ochotensis–Kobresietum myosuroidis ass.nov. is placed into the alliance Oxytropidion nigrescentis Ohba 1974, order Kobresio-Dryadetalia (Br.-Bl. 1948) Ohba 1974 and class Carici rupestris–Kobresietea Ohba 1974. Syntaxonomical position of Kobresia subalpine meadows is discussed. The des­cribed association presents the mountain tundra communities formed by dwarf-shrubs Rhododendron parvifolium, R. redowskianum (prostrate), Salixdarpirensis, Vaccinium uliginosum and mesophytic herb Hedysarum hedysaroides.Numerous lichens form the ground ­cover of these communities. The area of associations covers the alpine belt of Czersky and Kolymsky ranges at 1200–1400 m above s. l. Rare and endemic species, such as Poa kolymensis, P. tzvelevii, Oxytropis evenorum, O. ochotensis, Salix darpirensis, Sieversia pusilla, can be found there. The alpine belt area needs conservation and further floristic and ecological study.


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