russian altai
Recently Published Documents


TOTAL DOCUMENTS

107
(FIVE YEARS 40)

H-INDEX

18
(FIVE YEARS 2)

2022 ◽  
Vol 50 ◽  
pp. 28-32
Author(s):  
Andrei A. Legalov

A new species, Eremochorus (Eremochorus) kuraicus Legalov, sp. nov. from Kosh-Agach District, South-eastern Russian Altai of Western Siberia is described and illustrated. This species is similar to E. mikhailovi Legalov, 2007 from Central Altai but differs from it in the longer rostrum with distinct middle carina, longer elytra and the aedeagus. A distribution map for E. kuraicus Legalov, sp. nov. and E. mikhailovi is given.


Author(s):  
Anna Agatova ◽  
◽  
Roman Nepop ◽  
Igor Slyusarenko ◽  
Piotr Moska ◽  
...  

Multidisciplinary studies of various natural archives indicate contrasting changes in the human habitat in the high-mountainous southeastern part of the Russian Altai during the last 20,000 years. This period includes the final stage of the last glaciation and its degradation, the formation of the last giant ice-dammed lakes in the intermountain basins and their cataclysmic draining, considerable transformation of glacial landscapes to modern diverse and mosaic structure. Warmer and more humid climate in the first half of the Holocene was followed by cooling and repeated advances of mountain glaciers. The general trend to cooling and aridization in the second half of the Holocene is the most pronounced during the last two millennia. Deglaciation and final drying of intermountain basins boosted a renovation of the local ecosystems and established an environmental baseline of human occupation in the region. The arid climate, widespread permafrost and low population density determined a good preservation of archaeological heritage in the region, which is located at the crossroad between East and West, North and South. This paper presents the analysis of previously published and new data including newly obtained 14C and OSL dates, which allow to correlate climatically driven landscape transformations with habitat of ancient communities and cultures shifting in the region during the last 20, 000 years, as well as to assess the anthropogenic impact on the environment.


Author(s):  
Robert Sysolyatin ◽  
Sergei Serikov ◽  
Mikhail Zheleznyak ◽  
Mark Shatz ◽  
Yana Tikhonravova

2021 ◽  
Vol 47 ◽  
pp. 28-32
Author(s):  
Andrei A. Legalov

A new species, Otiorhynchus (Mongolorrhynchus) altaipilosus Legalov, sp. nov. from South-eastern Russian Altai of Western Siberia is described and illustrated. This species is similar to O. populiger Arnoldi, 1975 from Bayankhongor Province but differs from it in small teeth on the femora, the length of the rostrum is subequal to its width at the base, wider elytra, and the rugose-punctate pronotum. A distribution map for O. altaipilosus Legalov, sp. nov. and O. populiger is given.


Climate ◽  
2021 ◽  
Vol 9 (11) ◽  
pp. 162
Author(s):  
Anna Agatova ◽  
Roman Nepop ◽  
Andrey Nazarov ◽  
Ivan Ovchinnikov ◽  
Piotr Moska

Analysis of new chronological data, including 55 radiocarbon, 1 OSL, and 8 dendrochronological dates, obtained in the upper reaches of trough valleys within the Katun, North Chuya, South Chuya, and Chikhachev ranges, together with the 55 previously published ones, specifies climatically driven glacier dynamic in the Russian Altai. Available data refute the traditional concept of the Russian Altai Holocene glaciations as a consecutive retreat of the Late Pleistocene glaciation. Considerable and prolonged warming in the Early Holocene started no later than 11.3–11.4 cal kBP. It caused significant shrinking or even complete degradation of alpine glaciers and regeneration of forest vegetation 300–400 m above the modern upper timber limit. Stadial advances occurred in the middle of the Holocene (4.9–4.2 cal kBP), during the Historical (2.3–1.7 cal kBP), and the Aktru (LIA thirteenth–nineteenth century) stages. New radiocarbon ages of fossil soils limited glaciers expansion in the Middle Holocene by the size of the Historical moraine. Lesser glacial activity between 5 and 4 cal kBP is also supported by rapid reforestation in the heads of trough valleys. Glaciers advance within the Russian Altai, accompanied by accumulation of the Akkem moraine, could have occurred at the end of the Late Pleistocene.


ZooKeys ◽  
2021 ◽  
Vol 1063 ◽  
pp. 105-120
Author(s):  
Oleksiy Bidzilya ◽  
Peter Huemer ◽  
Jean-François Landry ◽  
Jan Šumpich

Gelechia omelkoi sp. nov. is described from the Ukok plateau and South Chuisky ridge in the Altai Mountains of Russia. The adult of the new species, including its male genitalia, is illustrated and compared with species most similar in morphology and DNA barcodes—G. sororculella (Hübner, 1817) and G. jakovlevi Krulikovsky, 1905 from the Palaearctic region, as well as G. mandella Busck, 1904 from Canada. This last species is redescribed based on adult specimens, including the genitalia of both sexes, and a lectotype is designated. Gelechia sirotina Omelko, 1986 is recorded from the Altai Republic for the first time. An updated list of six species of Gelechia from the Altai Mountains of Russia is given. Dorsal habitus photographs of all species are provided. The male genitalia of the lectotype of G. jakovlevi is illustrated for the first time.


Author(s):  
I. G. Boyarskikh

Depending on specific combinations of geoenvironmental factors, the micropopulations of the bluehoneysuckle in the valley of the Kuraika River (Gorny Altai) produced fruits of increased or decreased size and seednumber. The observed 3-fold higher accumulation of biologically active phenols in fruits, accompanied by the respectivedecreased accumulation in leaves, and narrower ratios of certain polyphenol classes in leaves and fruits are considered tobe the plant response to the stressing impact of environmental factors, resulting from the active tectonic processes in thestudied area of the Russian Altai.


2021 ◽  
Vol 45 ◽  
pp. 33-36
Author(s):  
Andrei A. Legalov

A new species, Otiorhynchus (Mongolorrhynchus) ivanovi Legalov, sp. nov. from Central Russian Altai of Western Siberia is described and illustrated. This species is similar to O. rectipilosus from Altai but differs from it in the profemora with obtuse tooth, curved pronotal sides and weakly rugose pronotum. A map and a key for identifying species from the subgenus Mongolorrhynchus are given.


Geosciences ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 342
Author(s):  
Dmitrii A. Ganyushkin ◽  
Sofia N. Lessovaia ◽  
Dmitrii Y. Vlasov ◽  
Gennady P. Kopitsa ◽  
László Almásy ◽  
...  

For the Altai Mountains’ region, especially the arid southeastern part of the Russian Altai, the data on glacier fluctuations in the Pleistocene and Holocene are still inconsistent. The study area was the Kargy River’s valley (2288–2387 m a.s.l.), a location that is not currently affected by glaciation and the glacial history of which is poorly studied. Field observations and geomorphological mapping were used to reveal the configuration of Pleistocene moraines. The relative dating method was applied to define the degree of weathering as an indicator of age. Three moraine groups of different ages (presumably MIS 6, MIS 4, and MIS 2) were identified based on a detailed investigation of their morphological features and the use of relative dating approaches. The latter were primarily based on weathering patterns. Data on the rock mineralogy, porosity, and specificity of biological colonization as an agent of weathering were obtained for the moraine debris. The studied moraines were composed of fine-grained schist, in which the specific surface area and fractality (self-similarity) were more developed in the older moraine. The growth of biota (crustose lichen and micromycetes) colonizing the rock surface led to rock disintegration and the accumulation of autochthonous fragments on the rock surface. Despite the fact that the initial stage(s) of moraine weathering affected by biota was fixed, the correlation trends of biota activity and moraine ages were not determined.


2021 ◽  
Vol 42 ◽  
pp. 116-120
Author(s):  
Andrei A. Legalov

Russian Altai of Western Siberia is described and illustrated. This species is similar to O. janovskii Korotyaev, 1990 but differs from it in the long decumbent setae on the elytra, larger teeth on the femora, wider rostrum and weakly narrowed apex of the aedeagus. Otiorhynchus altaicus Stierlin, 1861, syn. nov. is synonymous to Otiorhynchus (Podonebistus) bardus Boheman, 1842. A key for identifying species from the subgenus Podonebistus from Altai and adjacent territories is given.


Sign in / Sign up

Export Citation Format

Share Document