scholarly journals Development of the dwarf shrub Thymus mongolicus (Lamiaceae) in the conditions of Southern Siberia

2021 ◽  
Vol 31 ◽  
pp. 00027
Author(s):  
Evgeniya Talovskaya ◽  
Elizaveta Komarevtseva
Keyword(s):  
Dwarf Shrub ◽  
Grass Cover ◽  
Southern Siberia

The features of the development of Thymus mongolicus in the conditions of Southern Siberia was studied. The similarity of the phases of morphogenesis of individuals in all habitats was established. The duration of individual ontogenetic states, the ontogenesis, the morphogenesis and the reproduction of T. mongolicus are depending on the topography, the substrate and the total projective grass cover. The identified features of development contribute to the adaptation of T. mongolicus, survival and distribution of the species in different conditions of Southern Siberia.

scholarly journals Architecture and life forms of Thymus jenisseensis (Lamiaceae)

2020 ◽  
Vol 24 ◽  
pp. 00085
Author(s):  
Evgeniya B Talovskaya ◽  
Irina N Barsukova ◽  
Natalia Yu Kurochkina
Keyword(s):  
High Altitude ◽  
Life Forms ◽  
Dwarf Shrub ◽  
Forest Belt ◽  
Southern Siberia ◽  
Mechanisms Of Adaptation ◽  
A Site ◽  
Branched Compound ◽  
Duration Of Development ◽  
Architectural Unit

Thymus jenisseensis is endemic to Southern Siberia. The structure of Thymus jenisseensis were studied with the use of an architectural approach. The architectural unit consist of branched compound skeletal axis of the 1st and 2nd order, and is repeated many times in the structure of adults. As a result of studying the architectural units of individuals growing in different sites of a coenopopulation, in the upper border of the forest belt (Tsagan-Shibetu, Republic of Tuva), differences were identified. An architectural unit consisting of branched orthotropic or ascending basisympodially accreting compound skeletal axes develops on a site of a dry riverbed; an architectural unit consisting of branched orthotropic or ascending acrosympodially accreting compound skeletal axes develops on a site of high-altitude steppe on a plain. The diversity of compound skeletal axes in the structure of architectural units contributes to the formation of two biomorphs (dwarf subshrub and dwarf shrub), changes in the vitality and duration of development of T. jenisseensis individuals. The identified features of architecture are morphological mechanisms of adaptation of the species to living conditions.

Architecture of the Dwarf Shrub Thymus petraeus (Lamiaceae) in the Conditions of Southern Siberia

2020 ◽  
Vol 13 (1) ◽  
pp. 85-94
Author(s):  
E. B. Talovskaya ◽  
V. A. Cheryomushkina ◽  
I. N. Barsukova
Keyword(s):  
Dwarf Shrub ◽  
Southern Siberia

scholarly journals The problem of maintaining large herbivores in small conservation areas: deterioration of the grassveld in the Addo Elephant National Park

Koedoe ◽  
1991 ◽  
Vol 34 (1) ◽  
Author(s):  
P. Novellie ◽  
A.J. Hall-Martin ◽  
D. Joubert
Keyword(s):  
Species Composition ◽  
Relative Abundance ◽  
Vegetation Cover ◽  
National Park ◽  
Dwarf Shrub ◽  
Grass Cover ◽  
Conservation Areas ◽  
Large Herbivores ◽  
Themeda Triandra ◽  
Grassland Community

Changes in vegetation cover and species composition in a grassland community during a six year period are reported. The grass Themeda triandra and the dwarf shrub Helichrysum rosum decreased in abundance, whereas the grass Eragrostis obtusa increased. Comparison of grazed plots with fenced plots revealed large herbivores were responsible for the increase in abundance ofE. obtusa. The abundance of T. triandra was influenced by large herbivores, but rainfall fluctuations apparently also played a role. The decline in relative abundance of/7. rosum was evidently not caused by large herbivores. Grass cover was closely determined by rainfall. A drought-induced decline in forage abundance evidently caused the buffalo population to crash.

The Elachistidae of southern Siberia and Central Asia, with descriptions of five new species (Lepidoptera)¹

1992 ◽  
Vol 3 (4) ◽  
pp. 177-194 ◽  
Author(s):  
Lauri Kaila
Keyword(s):  
New Species ◽  
Central Asia ◽  
Baikal Region ◽  
Tianshan Mountains ◽  
Previous Literature ◽  
Altai Mountains ◽  
Southern Siberia

The Elachistidae material collected during the joint Soviet-Finnish entomological expeditions to the Altai mountains, Baikal region and Tianshan mountains of the previous USSR is listed. Previous literature dealing with the Elachistidae in Central Asia is reviewed. A total of 40 species are dealt with, including descriptions of five new species: Stephensia jalmarella sp. n. (Altai), Elachista baikalica sp. n. (Baikal), E. talgarella sp. n. (southern Kazakhstan), E. esmeralda sp. n. (southern Kazakhstan) and E. filicornella sp. n. (southern Kazakhstan). The previously unknown females of E. bimaculata Parenti, 1981 and Biselachista zonulae Sruoga, 1992 are described.

On Drummondia sinensis var. ussuriensis (Drummondiaceae, Bryophyta)

2012 ◽  
Vol 46 ◽  
pp. 235-244 ◽  
Author(s):  
O. M. Afonina ◽  
V. Ya. Cherdantseva
Keyword(s):  
Far East ◽  
Biosphere Reserve ◽  
Southern Siberia ◽  
The Far East ◽  
North Eastern ◽  
The World ◽  
World Distribution ◽  
North Eastern Part ◽  
State Nature

Drummondia sinensis Mull. Hal. var. ussuriensis (Broth.) Vitt has been found in Sokhondinskiy State Nature Biosphere Reserve (Zabaikalsky Territory, Southern Siberia). Earlier it was known in Russia from the southern part of the Far East as well as in north-eastern part of China and North of Mongolia. The type variety of Drummondia sinensis occurs in eastern part of China, Japan and India. Description and illustration of D. sinensis var. ussuriensis based on the material collected in Russia are given, comparison with close taxa is provided, and the world distribution is dicussed.

Sedelnikovaea baicalensis (Lecanoraceae) — new lichen genus and species for Europe

2018 ◽  
Vol 52 (2) ◽  
pp. 407-416
Author(s):  
T. V. Makryi
Keyword(s):  
Central Asia ◽  
Lichen Species ◽  
Significant Part ◽  
The Urals ◽  
Southern Siberia ◽  
Central Asian ◽  
Northeastern Siberia ◽  
Mountain Belts ◽  
First Time ◽  
Vast Range

Sedelnikovaea baicalensis, the Siberian-Central Asian lichen species, is recorded for the first time for Europe. Based on all the known localities, including those first-time reported from Baikal Siberia, the peculiarities of the ecology and distribution of this species are discussed, the map of its distribution is provided. It is concluded that the species was erroneously considered earlier as a Central Asian endemic. The center of the present range of this lichen is the steppes of Southern Siberia and Mongolia. Assumptions are made that S. baicalensis is relatively young (Paleogene-Neogene) species otherwise it would have a vast range extending beyond Asia, and also that the Yakut locations of this species indicate that in the Pleistocene its range was wider and covered a significant part of the Northeastern Siberia but later underwent regression. Based on the fact that in the mountains of Central Asia the species is found only in the upper mountain belts, it is proposed to characterize it as «cryo-arid xerophyte» in contrast to «arid xerophytes». A conclusion is made that the presence of extensive disjunctions of S. baicalensis range between the Southern Pre-Urals and the Altai-Sayan Mountains or the Mountains of Central Asia is unlikely; the lichen is most likely to occur in the Urals and most of Kazakhstan.

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