scholarly journals Spider (Aranei) steppe community in a ravine with fescue-feather-grass petrophytic vegetation

2018 ◽  
Vol 4 (1) ◽  
pp. 17 ◽  
Author(s):  
E. V. Prokopenko ◽  
A. V. Zhukov
Keyword(s):  
Feather Grass ◽  
Steppe Community

HERBAL ECOSYSTEMS IN AGROLANDSCAPES VALUYKI DISTRICT OF SOUTH RUSSIAN PROVINCE STEPPE ZONE OF CENTRAL BLACK EARTH REGION OF RUSSIA

2020 ◽  
Author(s):  
Elena Yakovleva
Keyword(s):  
Steppe Zone ◽  
The South ◽  
Feather Grass ◽  
Motley Grass

The characteristic of the spread of herbal ecosystems in the agrolandscapes of the Valui district of the South Russian province of the steppe zone of the Central Black Earth of Russia is given. Tramped pastures (with narrow-leaved bluegrass, sheep fescue, motley grass) predominate on the site of the indigenous (rich-motley grass, sheep fescue, feather-grass) Donetsk and middle-Don steppes.

scholarly journals TRACES OF THE ANCIENT PATHS IN THE STEPPE TAVRIA

2021 ◽  
Vol 40 (3) ◽  
pp. 199-214
Author(s):  
Yu. V. Boltryk ◽  
O. V. Karyaka
Keyword(s):  
Bronze Age ◽  
Middle Ages ◽  
Satellite Images ◽  
Transport Network ◽  
Late Middle Ages ◽  
Eurasian Steppe ◽  
Or Groups ◽  
Feather Grass ◽  
Different Color ◽  
The 19Th Century

The original appearance of the steppe surface of the southern part of the eastern European plane was transformed by the centuries of the anthropogenic impact. Along with feather grass the traces of the ancient roads have disappeared. However, the satellite images still detect the areas around some kurhans having kept the waggons traces. We can recognize them due to the different color of vegetation as well as by the coloration of the open soil. The antiquity of the roads near kurhans is witnessed by the cases of tracks, covered by the burial mounds, that were erected in the Bronze Age. An additional indicator of the ancient transport network on the maps of the 19th century are wells or groups of pits in the open steppe, the number of which should be associated with the need to water a large number of cattle. The latter occurred during the arrival of a trade caravan or a train of wagons. The kurhans themselves are an ancient form of mass cult buildings in the Eurasian steppe, which have attracted both large main and secondary roads. Powerful tradition of building kurhans, fading and restoring through times, existed from the Eneolithic to the late Middle Ages. The appearance of new mounds or the completion of existing ones periodically renewed the system of landmarks in the monotonous steppe. The paper provides an overview of previously unknown megastructures near the Scythian giant kurhans of Oguz and Chortomlyk, which in the form of light parallel stripes are recorded on satellite images. These stripes are probably traces of trenches or the foot of stone alleys, that were found to the east of the edge of the Oguz and outreached 800—850 m, and from Chortomlyk — 670 m. A search on various satellite images of the similar light stripes near other kurhans did not yield positive results. However, in the central part of the Dnieper-Molocha steppe region, satellite images luckily detected 19 nodes (intersections) of ancient ways connected to the kurhans’ mounds. Some of these nodes do yet not fit the complete road network of the region. But six of these nodes appear to be in the area of the route of the ancient path, known in the Middle Ages as Muravsky (Murava Route). It leaded from the Don basin, through the left (eastern) part of the basin of the Dnipro River to Crimea through the Isthmus of Perekop. Interestingly, this branch of the Muravsky Trail crosses the Sirogozy ravine between the kurhans of Kozel and Oguz. In previous reconstructions of the transport network, the option of passing this branch in the south of the Oguz, between the giant embankment and Diyiv kurhan, was preferred. The other three intersections lie in the lane of the old Chumaks’ Way or the Crimean Way, marking a forty-kilometer section between kurhans Kozel and Velyka Tsymbalka. From the center of the Tavria Steppe at least four directions of paths emerge towards the ancient Dnipro fords-crossings: Rogachytsia, Lepetych, Cair (Nosakiv) and Kіzikermen (Tavan).

scholarly journals Petrophytic-steppe communities of the Mogutova Mountain (Zhiguli Hills)

2016 ◽  
Vol 5 (3) ◽  
pp. 48-53
Author(s):  
Larisa Valerievna Sidyakina ◽  
Vladimir Mikhailovich Vasjukov ◽  
Sergey Vladimirovich Saksonov
Keyword(s):  
Russian Federation ◽  
Endemic Species ◽  
National Park ◽  
The North ◽  
Steppe Communities ◽  
Feather Grass ◽  
The Russian Federation ◽  
Pulsatilla Patens ◽  
Steep Slopes

The Mogutova Mountain - domal erosive ostanets in the north of the Zhigulyovsk hill, lies in national park Samara Luka. Communities petrophytic steppes are formed on calcareous exposures of steep slopes of the western, southern and east expositions of the mountain Mogutova. Petrophytic-steppe communities on a slope of east exposition are described - petrophytic-forbs-feather grass steppe ( Stipa capillata + Stipa pennata + Herbae stepposae ), on a slope of west exposition - petrophytic-sunrose-feather grass steppe ( Stipa pennata + Helianthemum nummularium ), on a slope of south exposition - petrophytic-thyme-sedge-feather grass steppe ( Stipa pulcherrima + Carex pediformis + Thymus zheguliensis ). In the studied communities three narrow-local of endemic species of the Zhigulyovsk hill grows: Euphorbia zhiguliensis, Gypsophila juzepczukii, Thymus zheguliensis and three of subendemic species grows: Festuca wolgensis s.str. , Tanacetum sclerophyllum (endemics of Central Volga area), Koeleria sclerophylla (endemic of Central Volga area and South Ural); the relict element of flora is presented by three species: Alyssum lenense, Clausia aprica, Helianthemum nummularium . Five species are included in the Red book of the Russian Federation: Astragalus zingeri, Euphorbia zhiguliensis, Koeleria sclerophylla, Stipa pennata, Thymus zheguliensis ; sixteen species are included in the Red book of the Samara region: Adonanthe vernalis, Alyssum lenense, Astragalus zingeri, Clausia aprica, Cotoneaster laxiflorus, Euphorbia zhiguliensis, Festuca wolgensis, Gypsophila juzepczukii, Helianthemum nummularium, Koeleria sclerophylla, Onosma volgensis, Pulsatilla patens, Scabiosa isetensis, Stipa pennata, Tanacetum sclerophyllum, Thymus zheguliensis. The most widespread plants of petrophytic steppes of the Mogutova Mountain: Astragalus zingeri, Carex pediformis, Echinops ruthenicus, Galium hexanarium, Gypsophila juzepczukii, Helictotrichon desertorum, Jurinea ledebourii, Onosma volgensis, Psephellus carbonatus, Stipa pennata, Tanacetum sclerophyllum, Thesium ramosum, Thymus zheguliensis .

Post-fire species recruitment in a semiarid perennial steppe on the Loess Plateau

2013 ◽  
Vol 61 (1) ◽  
pp. 29 ◽  
Author(s):  
Ling-Ping Zhao ◽  
Gao-Lin Wu ◽  
Zhi-Hua Shi
Keyword(s):  
Loess Plateau ◽  
Fire History ◽  
Seedling Recruitment ◽  
Western China ◽  
The Loess Plateau ◽  
Offspring Number ◽  
Significant Difference ◽  
Species Recruitment ◽  
North Western ◽  
Steppe Community

Offspring recruitment is an important part of population dynamics, as well as for plant-community structure and succession. One generality regarding grasses and fire is that clonal grasses tolerate fire extremely well and in most cases reach their maximum production in the immediate post-fire years. One qualification to this statement is that post-fire offspring, recruitment mode is very important. However, respective data are scare in the semiarid perennial steppe. We studied the relative importance of asexual v. sexual recruitment in the post-fire recovery in semiarid steppe on the Loess Plateau of north-western China. We observed differences in regeneration strategy after different times post-fire (burnt in 2008, burnt in 1999, and no fire history for at least 30 years). Results showed that fire significantly increased offspring recruitment numbers, but not species richness. The increase of asexual recruitment after a fire made a major contribution to the increase of total offspring number. Meanwhile, there was no significant difference for the ratio of asexual to sexual recruitment among sites with different times since fire. The asexual to sexual recruitment ratio was significantly different for different species, with some species not recruiting offspring via sexual recruitment. Our results indicated that seedling recruitment contributed little to post-fire recovery of the perennial-steppe community. Lack of sexual recruitment is not related to fire management but to inherent traits of the occurring plants.

Biological Diversity of Plants in the Territory of the Protected Landscape "Razdorskie Sklony" (Rostov Region)

2021 ◽  
pp. 106-112
Author(s):  
Olga Yu. Ermolaeva ◽  
Valentina V. Fedyaeva ◽  
Antonina N. Shmaraeva ◽  
Andrey V. Gorovtsov
Keyword(s):  
Biological Diversity ◽  
Red List ◽  
Cultural Development ◽  
Floodplain Forests ◽  
Rostov Region ◽  
Specially Protected Natural Areas ◽  
Feather Grass ◽  
History Of ◽  
Protected Natural Areas ◽  
The Right

The article is aimed to assess the florocenotic diversity of the specially protected natural territory of the Rostov region ʺRazdorskie sklonyʺ. In the Rostov region there are 84 specially protected natural areas (PA), including the protected landscape ʺRazdorskie sklonyʺ. The PA consists of three cluster sites with a total area of 1117.64 hectares. The ʺRazdorskie sklonyʺ are a picturesque natural-historical landscape, typical for the right-bank slope of the Don valley. It has a long history of cultural development. Here there are feather grass steppes, the southernmost ravine upland forests, outcrops of pontic limestone-shell rocks, sands of the Yanovskaya formation and clay outcrops on the slopes, with a strip of alluvial floodplain. The vegetation of the right bedrock slope of the Don valley is distinguished by great formational variegation and mosaicism, due to the rapid and abrupt change of environmental factors in a rather limited space, which largely determines the richness and originality of its floristic complex. On the territory of the protected landscape, subzonal forb-sod grass, as well as hemipsammophytic (semi-sandy) and petrophytic steppes are present. Woody vegetation is represented by gully, floodplain forests and thickets of bushes. The vegetation cover of the ʺRazdorskie sklonyʺ is distinguished by a low degree of anthropogenic destruction and is quite representative in syntaxonomic and floristic terms. The flora of the protected landscape includes 693 species of higher vascular plants, including 29 taxa from the Red Books of the Rostov Region and the Russian Federation, a total of 183 taxa from the Red List of the International Union for Conservation of Nature (93 species) and the European Red List (145 species). Forest vegetation in the gullies of the protected areas is represented by ravine, floodplain forests and thickets of bushes. In the system of zoning of the ravine forests of the Lower Don, the ravine forests of the ʺRazdorskie sklonyʺ belong to one of the most southern regions – the Crimean-Donetsk region. Numerous cenopopulations of for-est ephemeroids form spring synusia in ravine forests and thickets of shrubs, being a temporary ʺcollective dominantʺ.

Succession patterns following soil disturbance in a sagebrush steppe community

Oecologia ◽  
1990 ◽  
Vol 85 (2) ◽  
pp. 293-300 ◽  
Author(s):  
Terry McLendon ◽  
Edward F. Redente
Keyword(s):  
Soil Disturbance ◽  
Sagebrush Steppe ◽  
Steppe Community

scholarly journals Methods for tracking sagebrush‐steppe community trajectories and quantifying resilience in relation to disturbance and restoration

2019 ◽  
Vol 28 (1) ◽  
pp. 115-126
Author(s):  
Claire E. Wainwright ◽  
G. Matt Davies ◽  
Eva Dettweiler‐Robinson ◽  
Peter W. Dunwiddie ◽  
David Wilderman ◽  
...  
Keyword(s):  
Sagebrush Steppe ◽  
Steppe Community

Rediscovery of Phrynopus peruanus Peters 1874  (Amphibia, Anura, Leptodactylidae)

Zootaxa ◽  
2007 ◽  
Vol 1485 (1) ◽  
pp. 51-57 ◽  
Author(s):  
EDGAR LEHR
Keyword(s):  
Natural History ◽  
Type Species ◽  
Type Locality ◽  
Skin Texture ◽  
Precise Information ◽  
Male Characters ◽  
Feather Grass ◽  
Males And Females

Phrynopus peruanus, the type species of the genus, was described by Peters in 1874 based on three specimens from “Maraynioc in Peru”. In 1975, Lynch redescribed the species based on two preserved females, but skin texture, male characters, coloration in life, and precise information on the type locality and natural history remained unknown or uncertain. In December 2005, four specimens of P. peruanus were found at the Puna of Maraynioc at 3825 m a.s.l. in the Vitoc Valley (Departamento de Junín). Males were calling from inside the bunched Peruvian Feather Grass (Stipa icchu). Coloration in life and morphology of males and females are described along with observations on their habitat and ecology.

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