Steppe vegetation (Festuco-Brometea) of Western Altai piedmonts

2007 ◽  
pp. 38-60 ◽  
Author(s):  
A. Yu. Korolyuk
Keyword(s):  
Steppe Vegetation ◽  
Humidity Gradient ◽  
Dry Steppe ◽  
Steppe Communities

Classification of steppe communities of the Western Altai piedmonts is presented according to the Braun-Blanquet approach. The most part of steppes refer to the order Helictotricho-Stipetalia. New dry steppe ass. Astragalo stenoceratis—Stipetum lessingianae is des­cribed. Zonal true steppes (associations Artemisio austriacae—Stipetum capillatae, Artemisio austriacae—Stipetum zalesskii) and their petrophyte variants (asso­ciations Gypsophilo patrinii—Festucetum valesiacae, Allio rubentis—Caricetum humilis, Eritrichio altaicae—Stipetum korshinskyi) are characterized. Three asso­ciations of meadow steppes (Carici humilis—Stipetum zalesskii, Carici pediformis—Spiraetum trilobatae, Potentillo chrysanthae—Dactylidetum glomeratae) refer to the order Stipetalia sibiricae. Changes in plants communities along the humidity gradient are analysed.

scholarly journals Steppe communities in the vicinity of Togliatti (Samara Region)

2018 ◽  
Vol 7 (4) ◽  
pp. 74-80
Author(s):  
Tatyana Mikhaylovna Lysenko
Keyword(s):  
Computer Program ◽  
International Code ◽  
Steppe Vegetation ◽  
New Associations ◽  
Code Of Phytosociological Nomenclature ◽  
Composition And Structure ◽  
Steppe Communities ◽  
Green Book ◽  
Phytosociological Nomenclature

The paper describes the study of steppe vegetation in the Samara Region. It contains results of the steppe communities field study conducted in 2014-2015 in the vicinity of Togliatti (Samara Region). Geobotanical relevs were made on standard sites for steppe vegetation. Projective covering of plant species in field conditions was estimated as a percentage and then converted to scores using B.M. Mirkins scale. The relevs are placed in the geobotanical database Vegetation of the Volga and Ural Basins and processed using the computer program JUICE. Bioindication studies were conducted using the IBIS program. As a result of the syntaxonomic analysis carried out using the floral approach to the classification of vegetation by J. Braun-Blanquet, 2 new associations and 6 new subassociations were identified. Their names are given in accordance with the International Code of Phytosociological Nomenclature. Their position in the system of higher syntaxons of Europe is established, nomenclature types, diagnostic types are given, composition and structure, ecology and distribution of communities are characterized as well as the results of processing according to the scales by L.G. Ramensky. The communities of all established syntaxons are recommended for inclusion in the 2nd edition of the Green Book of the Samara Region.

scholarly journals Features of ecological differentiation of halophytic, steppe and petrophytic vegetation in the valley of the Liman Kuyalnik (Odesa Oblast)

2019 ◽  
Vol 27 (3) ◽  
pp. 205-213
Author(s):  
D. V. Dubyna ◽  
T. P. Dziuba ◽  
L. P. Vakarenko ◽  
A. A. Ennan ◽  
H. M. Shykhaleeva ◽  
...  
Keyword(s):  
Plant Communities ◽  
Climatic Factors ◽  
Ecological Factors ◽  
Carbonate Content ◽  
Limiting Factor ◽  
Edaphic Factors ◽  
Key Factors ◽  
Ecological Differentiation ◽  
Steppe Vegetation ◽  
Steppe Communities

Assessment of key environmental factors that influence vegetation distribution and formation of plant communities is one of the most important challenges in modern phytocenology. Nowadays, several bioindication systems are applied to determine ecological specificity of plant communities and to establish the leading factors for their environmental differentiation. The system most widely used in Europe, that of H. Ellenberg, contains a numerical score on 6 ecological factors. On the example of vegetation of the valley of the Liman Kuyalnik, Y. Didukh developed the synphytoindication method based on evaluation of phytocenoses with respect to 12 ecological factors: 7 edaphic factors and 5 climatic factors; the method determines a more accurate and complete presentation of the analysis. In the valley of the Liman Kuyalnik (Odesa Oblast) the largest area is covered with halophytic and steppe vegetation. Halophytic vegetation (Therosalicornietea, Festuco-Puccinellietea classes, Juncetea maritimi, Bolboschoenetea maritimi) predominated in the shoreline areas of the valley, whereas steppe (Festuco-Brometea) and petrophytic (Sedo-Scleranthetea) vegetation dominated on the slope sites. With the application of DCA-ordination and synphytoindication methods it was established that distribution of plant communities in the hyper-space of the environmental conditions was most strongly correlated with edaphic factors, whereas microclimatic (light intensity) and climatic (thermo-regime) conditions had somewhat less influence on their differentiation. Water regime and level of soil salinity served as key factors for syntaxa of halophytic vegetation; moisture variability and salt regime, as well as soil moisture and carbonate content were key factors for the steppe vegetation, and thermo-regime was the main factor for petrophytic-steppe and petrophytic vegetation. The "eco-spaces" of these groups largely overlap. Halophytic cenoses are characterized by quite wide ecological ranges by most ecological factors. Steppe communities show much less ecological diversity. In the valley of the liman, all the steppe communities were characterized by stenotopicity in relation to most ecological factors; these factors complexly determine the specificity and diversity of biotopes within the valley, which are unique and require protection and the taking of appropriate measures, depending on the changes in activity of one or another limiting factor. Nowadays, the valley of the Liman Kuyalnik is in a state of environmental disaster. The established relationships in ecological differentiation of plant communities will be applied to further monitoring of biodiversity state, preservation and possible restoration of vegetation types that were native for this unique territory.

scholarly journals Ecological and biomorphological features of the steppe communities of the central part of the Piedmont Crimea

2019 ◽  
pp. 65-77
Author(s):  
D. V. Epikhin ◽  
L. P. Vakhrusheva
Keyword(s):  
Vegetation Cover ◽  
Steppe Vegetation ◽  
Mediterranean Origin ◽  
Steppe Communities ◽  
Floristic Classification ◽  
The Crimea ◽  
First Time

The article analyzes the syntaxonomic structure of the steppe communities of the central foothill part of the Crimea. They belong to the class Festuco-Brometea Br.-BI. et R.Tx., two orders, two unions and two sub-unions, five associations. For coenoflora at the level of associations of ecological-floristic classification, a detailed systematic, arealogical, ecological-biomorphological analysis was carried out for the first time. The most significant differences in the structure of the communities of steppe vegetation described on the basis of ecological-floristic classification are revealed. Significant participation in the formation of communities of species of Mediterranean origin and shrubs has been established. Moreover, unlike the rest of the communities, the associations of Asphodelinetum tauricae Didukh 1983 association are characterized by the dominance of these floral elements in their structure. The steppe communities of the studied region are characterized by significant xerophytization of the vegetation cover.

Endemic associations of petrophytic steppes of the South Urals palaeoreefs

2011 ◽  
pp. 117-126 ◽  
Author(s):  
S. M. Yamalov ◽  
A. V. Bayanov ◽  
V. B. Martynenko ◽  
A. A. Muldashev ◽  
P. S. Shirokikh
Keyword(s):  
Plant Communities ◽  
Southern Urals ◽  
South Urals ◽  
The South ◽  
The Southern Urals ◽  
New Associations ◽  
Steppe Communities

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.

The map of steppe vegetation of Eastern Transcaucasus region

1995 ◽  
pp. 42-50
Author(s):  
V. V. Atamov
Keyword(s):  
Ecological Monitoring ◽  
High Mountain ◽  
North Caucasus ◽  
Bothriochloa Ischaemum ◽  
Steppe Vegetation ◽  
Mountain Steppes ◽  
Or Groups ◽  
Desert Steppes ◽  
Steppe Communities ◽  
Festuca Valesiaca

Mountain steppes play important role in vegetation cover of East Transcaucasus. They have some similar floristic and phytocoenotic features with North Caucasus and Black Sea plain steppes, but by origin they related to the South-West Asian steppes. The characteristic feature of these steppe communities (especially the middle-height mountain ones) is the participation of xerophytic cushion-like thorn-dwarf semishrubs and shrubs (species of gg. Acantholimon, Astragalus). The main subdivisions of the legend show altitudinal subtypes of steppe vegetation: piedmont and lowmountain sagebrush-bunchgrass desert steppes; piedmont and low-mountain herb-bunchgrass and bunchgrass true steppes; low– and middle–height mountain xerophytic dwarf semishrub and shrub and shrub-bunchgrass (tragacanth, thyme) steppes; middle-height and high-mountain herb-grass and grass-herb meadow steppes. The main mapping units are associations or groups of ecologically similar associations. The most wide-spread dominants of Transcaucasus steppes are Bothriochloa ischaemum, Stipa tirsa, S. pennata, S. pontica, S. capillata, Festuca valesiaca, etc. This map is of considerable significance as the areas of natural steppe vegetation are the models for ecological monitoring and the objects of study and protection.

scholarly journals Classification of steppe vegetation in the eastern Pamir Alai and southwestern Tian-Shan Mountains (Tajikistan, Kyrgyzstan)

2018 ◽  
Vol 48 (4) ◽  
pp. 369-391 ◽  
Author(s):  
Arkadiusz Nowak ◽  
Agnieszka Nobis ◽  
Sylwia Nowak ◽  
Marcin Nobis
Keyword(s):  
Steppe Vegetation ◽  
Tian Shan Mountains ◽  
Tian Shan

(A review) B. B. Namzalov. Steppes of Tuva and South-Eastern Altai. Novosibirsk: Academic publ. "Geo", 2015. 294 p .

2016 ◽  
pp. 141-144
Author(s):  
E. A. Volkova
Keyword(s):  
Spatial Structure ◽  
Plant Cover ◽  
English Summary ◽  
Mountain Region ◽  
Steppe Vegetation ◽  
Altitudinal Zonality ◽  
South Siberia ◽  
Mountain Vegetation ◽  
Vegetation And Climate

The monograph of B. B. Namzalov “Steppes of Tuva and South-East Altai” describes the steppe vegetation of the vast mountain region of the South Siberia. Two fundamental problems of botanical geography and geobotany such as the spatial structure of the plant cover at regional and topological levels and classification of steppe vegetation based on florocoenogenetic approach are discussed. Studying the heterogeneity of the mountain vegetation, the author has revealed the interrelations between vegetation and climate, topography, soils and other components of natural complexes. The advantages of ecological-historical approach to the typology of the vegetation are shown. A hierarchical system of syntaxa of steppe vegetation is given. The book is nicely illustrated including the fragments of geobotanical maps, profiles, block diagrams, schemes of altitudinal zonality of vegetation, as well as color photographs. The book has an English summary where the all chapters are shortly presented.

Relic steppes of the order Helictotrichetalia schelliani Hilbig 2000 of the Omolon valley (Western Chukotka)

2011 ◽  
pp. 17-32
Author(s):  
V. B. Dokuchayeva ◽  
N. V. Sinelnikova
Keyword(s):  
North East ◽  
The North ◽  
Steppe Communities ◽  
New Association

Classification of relic steppe communities in the Omolon valley (Western Chukotka) has been performed according to the Braun-Blanquet approach. All communities represent 3 associations, 3 subassociations, 3 variants and 15 communities of class Сleistogenetea squarrosae Mirk. et al. 1986, order Helictotrichetalia schelliani Hilbig 2000 and alliance Elytrigio jacutori—Dracocephalion palmati Sinelnikova 2009. The new association — Lychnido sibiricae—Festucetum kolymensis ass. nov. and two new subassociations — Thymo diversifolii—Elytrigietum jacutori festucetosum kolymensis subass. nov. and Dracocephalo palmati—Saxifragetum omolojensis eremogonetosum tschuktschori subass. nov. are described. Peculiarities of distribution of class Сleistogenetea squarrosae in the North-East of Russia are discussed.

scholarly journals Estimation of the relation of NDVI steppe vegetation and radial growth of pine belt forests in arid conditions of the south of Western Siberia

2021 ◽  
Vol 27 (2) ◽  
pp. 355-367
Author(s):  
Natalia Rygalova ◽  
Tatiana Plutalova
Keyword(s):  
Tree Ring ◽  
Vegetation Index ◽  
Vegetation Indices ◽  
Ring Width ◽  
Correlation Coefficients ◽  
Temporal Analysis ◽  
Positive Trend ◽  
Tree Ring Chronology ◽  
Steppe Vegetation ◽  
Dry Steppe

This article presents a spatial-temporal analysis of the NDVI vegetation series (based on the MODIS satellite data) and dendrochronological data obtained for the steppe regions of the Altai Territory. NDVI series are built for five polygons of natural and natural-anthropogenic steppe landscapes for the period 2000–2018. Experimental areas of natural landscapes are located in coastal and specially protected natural areas, natural and anthropogenic arable lands. Most of the points are located in the dry-steppe sub-provinces of the steppe zonal area, a smaller part is in the arid-steppe (including the dendrochronological area). The chronology of the tree ring width is built for the Scots pine in the steppe part of extrazonal belt pine forests. A positive trend in vegetation indices change and a weak positive trend for the tree-ring chronology of the pine were found for the NDVI series of almost all polygons for the study period. A more pronounced positive trend is characteristic of the area with the lowest average NDVI values, while a negative trend is characteristic of the area with the highest average values of the vegetation index. The correlation of the NDVI series averaged over polygons with each other ranged from 0.54 to 0.64 (significant at p < 0.05). The dependence of the analyzed series on the dynamics of moistening of the territory was revealed. The correlation coefficients of the Selyaninov hydrothermal coefficient with the NDVI series ranged from 0.51 to 0.76, and with the tree-ring chronology was 0.63 (significant at p < 0.05). A statistically significant relationship was established for some points between the chronology of the pine and the NDVI series, mostly related to dry steppe vegetation.

Sign in / Sign up

Export Citation Format

Share Document