The unfavorable epizootic situation on nematode infestation of populations of the sable Martes zibellina and the pine marten M. martes in Western Siberia

2016 ◽  
Vol 3 (3) ◽  
pp. 325-331
Author(s):  
Жигилева ◽  
O. Zhigileva ◽  
Усламина ◽  
I. Uslamina
Keyword(s):  
Western Siberia ◽  
Nematode Species ◽  
Parasitic Nematodes ◽  
Forest Steppe ◽  
Pine Marten ◽  
The South ◽  
Northern Forest ◽  
North East ◽  
The North ◽  
Pine Martens

Objective of research: to study the nematode infestation of the sable and pine marten in Western Siberia. Materials and methods: Altogether 169 individuals of the sable and 18 — of the pine marten were investigated using the method of partial dissection of the gastrointestinal tract and lungs. Animals were caught according to the hunting license in 2009-2011 and 2014-2015, in 8 areas of Western Siberia from the south taiga to the northern forest-steppe. Results and discussion: We have found four species of parasitic nematodes, two of which (Crenosoma petrovi, Filaroides martis) were localized in lungs and two species (Capillaria putorii, Strongyloides martis) — in the intestine of the sable and the pine marten. Prevalence of lung nematodes was 80%, intestine nematodes — 40%. Intensity of infestation ranged from 26 to 358 nematodes per animal. F. martis is the most pathogenic and most common helminth in martens in Western Siberia. 53,3% of pine martens and 26,5% of sables were infected with this nematode species. Nematode S. martis is the most abundant in the intestine. In pine martens the extensity of invasion was 42,8%, the abundance index — 8.29 helminths per animal; in sables — 9,1% and 1.18, respectively. Pine martens were infected by F. martes and S. martis more than sables (p — 0,05). Prevalence increases in the direction from the North East (taiga) to the South West (sub-taiga), which determines the intensity of the helminthiases focus in biocenoses of Western Siberia. Infection of pine martens in the forest-steppe was not detected. In 2014–2015 compared with the previous study period (2009–2011) the extensity of invasion with intestinal nematodes increased by 1,5–2 times, and with highly pathogenic lung parasites — by 3 times. The increase in the helminth infestation may be explained by the growth of animal population density.

scholarly journals Number and Distribution of the Narrow-Headed Vole Lasiopodomys gregalis (Pallas, 1779) (Cricetidae, Rodentia) in Western Siberia

2020 ◽  
pp. 209-227
Author(s):  
A. A. Kislyi ◽  
Yu. S. Ravkin ◽  
I. N. Bogomolova ◽  
S. M. Tsybulin ◽  
V. P. Starikov
Keyword(s):  
Western Siberia ◽  
Middle Taiga ◽  
Forest Steppe ◽  
West Siberian Plain ◽  
Similarity Coefficients ◽  
The South ◽  
The North ◽  
Structural Graph ◽  
The Matrix ◽  
River Valleys

According to the data collected in the second half of summer for the period from 1954 to 2016 in the flat and mountainous parts of Western Siberia, the distribution and number of the narrow-headed vole in the zonal and provincial aspects were analyzed. Based on the cluster analysis of the matrix of similarity coefficients of abundance indicators obtained by averaging the initial data by years and groups of geobotanical maps units, the classification of habitats according to the favorable environmental conditions degree for the vole is made. The averaged samples are divided into five types of favorability: from optimal, where the abundance of the species is highest in the whole studied area, to extreme, where it is not encountered. In the South of the West Siberian plain narrow-headed vole prefers steppes, and in the subarctic tundras – communities of river valleys. In the Altai and Kuznetsk-Salair mountain regions it is most common in the subalpine light forests, tundras and tundra-steppe of the North-Western and SouthEastern Altai. On average, this vole prefers open habitats in Western Siberia. According to the classification and the structural graph, the dependence of the vole abundance on a number of factors and their inseparable combinations (enviromental and anthropogenic regimes) was revealed. The greatest connection with its distribution in the habitats of Western Siberia is traced for heat and water availability. On the plain, the number of this vole increases from the middle taiga, where it is found only once, to the subzone of the subarctic tundras in the North and to the forest-steppe and steppe zones in the South. In the mountains its more in the South-Eastern Altai, where a relatively high proportion of the most favorable for narrow-headed vole habitats.

scholarly journals Communities of the class Festuco-Brometea Br.-Bl. et Tx. ex Soó 1947 in Mesyagutovskaya and Krasnoufimskaya forest-steppes (the Middle Cis-Ural region)

2019 ◽  
pp. 29-78 ◽  
Author(s):  
N. V. Zolotareva ◽  
A. Yu. Korolyuk ◽  
S. M. Yamalov
Keyword(s):  
Ural Region ◽  
Forest Steppe ◽  
The South ◽  
Forest Zone ◽  
Steppe Species ◽  
Northern Forest ◽  
Diagnostic Species ◽  
The North ◽  
Cluster A ◽  
Rocky Habitats

There is a series of forest-steppe islands in the forest zone of the Middle Cis-Ural region. Two of these (Krasnoufimskaya and Mesyagutovskaya forest-steppes) of the considerable size and are of great interest for the study of steppe and meadow-steppe vegetation diversity in the northern locations of the Cis-Urals region. In the recent decades the studies of Mesyagutovskaya forest-steppe herbaceous vegetation with their syntaxonomy were done (Yamalov, Kucherova, 2009; Yamalov et al., 2013). For Krasno­ufimskaya forest-steppe such research was not carried out. Our aim was to make the revision of previously described syntaxa on this territory using the new data and to determine their position within the class Festuco-Brometea according to modern views. Existence of the forest-steppe landscape in the forest zone of Middle Cis-Urals region is due tothebarrier effect of the Ufa Plateau, intercepting part of the rainfall coming from the Atlantic transport. The climate of the study area is continental with moderately cold winter and moderately warm summer. Bedrocks here are limestones, sandstones and slates. The extrazonal northern forest-steppe extends for two degrees in the latitudinal direction. Mountainousness increases from the north to the south, while the climate becomes drier and warmer (Table 1). The central part of Krasnoufimskaya forest-steppe is flat; its agricultural development began in 17th century, so therefore the steppe areas were preserved only on the slopes of river valleys and hills. The territory of Mesyagutovskaya forest-steppe is more mountainous, therefore, the number of preserved steppe plots here is greater than in the Krasnoufimsk area (Fig. 2, 8). The initial dataset includes 295 relevés collected in the course of the field study in 2007–2014 in some locations of the Sverdlovsk Region and the Bashkor­tostan Republic. After the revision according to EuroVegChecklist Expert System (Mucina et al., 2016) the relevés previously assigned to the class Moli­nio-Arrhenatheretea were excluded, thus the data of this paper are based on the analysis of 260 relevés. All relevés were classified using the modified TWINSPAN algorithm (Roleček et al., 2009) in JUICE 7.0 (Tichý, 2002). According to TWINSPAN results the dataset was divided into 9 groups which formed two clusters (Fig. 1). Each of them is differentiated by group of species: cluster A — by the meso-xerophyte species of meadow steppes and xeric meadows, including 18 diagnostic species of the order Brachypodietalia pinnati (syn. Brometalia erecti) (Willner et al., 2017, 2019): Amoria montana, Brachypodium pinnatum, Carex caryophyllea, Dactylis glomerata, Festuca pratensis, Lathyrus pratensis, Leucanthemum vulgare, Ranunculus polyanthemos, Trifolium pratense, Vicia cracca, etc.; cluster B — by the widespread steppe species, including diagnostic ones of the class Festuco-Brometea (Anemone sylvestris, Artemisia latifolia, Campanula sibirica, Koeleria cristata, Scabiosa ochroleuca, Stipa capillata) and the order Helictotricho-Stipetalia (Helictotrichon desertorum, Onosma simplicissima, Oxy­tropis pilosa, Pilosella echioides, Potentilla humifusa, Salvia stepposa) (Korolyuk, 2017). Thus, cluster A combines meadow steppes and xeric meadows on rich soil habitats, and these communities correspond to the order Brachypodietalia pinnati. Cluster B combines petrophytic steppes on dry rocky habitats of insolated slopes, and these communities correspond to the order Helictotricho-Stipetalia. Ordination showed that such ecological factors as habitat moisture, soil fertility and rockiness are important in differentiation of syntaxa of the class Festuco-Brometea (Fig. 13). The vegetation of the class Festuco-Brometea in the northern forest-steppe of the Cis-Urals region belongs to 2 orders, 6 associations, 9 subassociations, 2 variants and 3 communities. Among them 1 association (Centaureo sibiricae–Stipetum pulcherrimae Yamalov ass. nov. hoc loco), 9 subassociations (Leucanthemo vulgaris–Stipetum pennatae typicum subass. nov. hoc loco, L. v.–S. p. festucetosum pratensis subass. nov. hoc loco, L. v.–S. p. vicietosum tenuifoliae subass. nov. hoc loco, Drabo sibiricae–Primu­letum macrocalycis typicum subass. nov. hoc loco, D. s.–P. m. potentilletosum humifusae subass. nov. hoc loco, Fragario viridis–Caraganetum fruticis poetosum angustifoliae Yamalov subass. nov. hoc loco, Stipo pennatae–Centauretum sibiricae typicum subass. nov. hoc loco, S. p.–C. s. polygonatetosum odorati subass. nov. hoc loco, S. p.–C. s. polygaletosum sibiricae subass. nov. hoc loco) and 3 communities (Spiraea crenata, Festuca valesiaca–Alyssum tortuosum, Anthemis subtinctoria–Aster alpinus) are new. One association (Stipo pennatae–Centauretum sibiricae Yamalov et al. ex Zolotareva, Korolyuk, Yamalov ass. nov. hoc loco) has been validated. Syntaxa of the order Brachypodietalia pinnati represent the base of the class Festuco-Brometea in the study area. Currently, only meadow steppes of the ass. Leucanthemo vulgaris–Stipetum pennatae are widespread throughout the extrazonal forest-steppe. Steppe-meadows of the ass. Drabo sibiricae–Primuletum macrocalycis) are found in the Mesyagutovskaya area; in the northern part the same landscape positions are occupied by communities of the class Molinio-Arrhenatheretea. The steppe shrubs in the northern and the southern parts of the forest-steppe area are also different: in the south these are dominated by Caragana frutex and corresponds to the ass. Fragario viridis–Caraganetum fruticis, in the north (Krasnoufimskaya area) Caragana frutex is not found and shrub communitiesaredominated by Spiraea crenata (Fig. 2). Syntaxa of the order Helictotricho-Stipetalia occur on limestones exposures. Currently, the petrophytic steppes of the ass. Stipo pennatae–Centauretum sibiri­cae are known overall in the extrazonal forest-steppe, while the communities of the ass. Centaureo sibiricae–Stipetum pulcherrimae are registered only in the southern part of Mesyagutovskaya forest-steppe; northwards locations of this association diagnostic species are rare, some of these are absent in the Krasnoufimskaya forest-steppe area. The other syntaxa of petrophytic steppes with many relict and endemic species occur locally on the slopes of ancient reeves due to the unique combination of factors (Fig. 8).

"Eastern transfer" as the main argument in favor of the water origin of the ridge relief of the South of Western Siberia

2020 ◽  
Author(s):  
Alexander L. Beisel ◽  
◽  
Evgeny S. Sobolev ◽  
Keyword(s):  
Western Siberia ◽  
Convincing Evidence ◽  
Main Argument ◽  
The South ◽  
North East ◽  
The North ◽  
South West ◽  
Axial Part ◽  
Water Origin ◽  
Ridge System

New data were obtained in favor of “Eastern transfer” – the transfer of material from the North-East to the South-West during the formation of the ridge system in Late Pleistocene. They consist in two positions: first, they are longitudinal furrows in the axial part of the ridges, which are fan-shaped split at their South-Western ends; second, the inextricable genetic link of the ridge relief with the spillways is confirmed. The Eastern transfer is interpreted as convincing evidence of the water origin of the ridge relief.

The Archaean Atâ intrusive complex (Atâ tonalite), north-east Disko Bugt, West Greenland

1999 ◽  
pp. 103-112
Author(s):  
Feiko Kalsbeek ◽  
Lilian Skjernaa
Keyword(s):  
Intrusive Complex ◽  
The South ◽  
Original Series ◽  
Early Proterozoic ◽  
West Greenland ◽  
North East ◽  
The North ◽  
Southern Border ◽  
Area North ◽  
Igneous Layering

NOTE: This article was published in a former series of GEUS Bulletin. Please use the original series name when citing this article, for example: Kalsbeek, F., & Skjernaa, L. (1999). The Archaean Atâ intrusive complex (Atâ tonalite), north-east Disko Bugt, West Greenland. Geology of Greenland Survey Bulletin, 181, 103-112. https://doi.org/10.34194/ggub.v181.5118 _______________ The 2800 Ma Atâ intrusive complex (elsewhere referred to as ‘Atâ granite’ or ‘Atâ tonalite’), which occupies an area of c. 400 km2 in the area north-east of Disko Bugt, was emplaced into grey migmatitic gneisses and supracrustal rocks. At its southern border the Atâ complex is cut by younger granites. The complex is divided by a belt of supracrustal rocks into a western, mainly tonalitic part, and an eastern part consisting mainly of granodiorite and trondhjemite. The ‘eastern complex’ is a classical pluton. It is little deformed in its central part, displaying well-preserved igneous layering and local orbicular textures. Near its intrusive contact with the overlying supracrustal rocks the rocks become foliated, with foliation parallel to the contact. The Atâ intrusive complex has escaped much of the later Archaean and early Proterozoic deformation and metamorphism that characterises the gneisses to the north and to the south; it belongs to the best-preserved Archaean tonalite-trondhjemite-granodiorite intrusions in Greenland.

The Metamorphosed Limestones and Associated Contaminated Igneous Rocks of the Carlingford District, Co. Louth

1932 ◽  
Vol 69 (5) ◽  
pp. 209-233 ◽  
Author(s):  
G. D. Osborne
Keyword(s):  
Igneous Rocks ◽  
The South ◽  
Ordnance Survey ◽  
Igneous Complex ◽  
North East ◽  
The North ◽  
South West ◽  
Carboniferous Limestone ◽  
Contamination Effects

THE Carlingford-Barnave district falls within the boundaries of Sheet 71 of the Ordnance Survey of Ireland, and forms part of a broad promontory lying between Carlingford Lough on the north-east and Dundalk Bay on the south-west. The greater part of this promontory is made up of an igneous complex of Tertiary age which has invaded the Silurian slates and quartzites and the Carboniferous Limestone Series. This complex has not yet been investigated in detail, but for the purposes of the present paper certain references to it are necessary, and these are made below. The prevalence of hybrid-relations and contamination-effects between the basic and acid igneous rocks of the region is a very marked feature, and because of this it has been difficult at times to decide which types have been responsible for the various stages of the metamorphism.

Taxonomy of Nystiellidae (Caenogastropoda, Epitonioidea) from Brazil, with description of three new species from the South-western Atlantic

2017 ◽  
Vol 98 (7) ◽  
pp. 1619-1644 ◽  
Author(s):  
Alexandre Dias Pimenta ◽  
Bruno Garcia Andrade ◽  
Ricardo Silva Absalão
Keyword(s):  
Rio Grande ◽  
Taxonomic Revision ◽  
South Atlantic ◽  
Shell Morphology ◽  
The South ◽  
Western Atlantic ◽  
North East ◽  
The North ◽  
Eastern Brazil ◽  
North Eastern

A taxonomic revision of the Nystiellidae from Brazil, including samples from the Rio Grande Rise, South Atlantic, was performed based on shell morphology. Five genera and 17 species were recognized. For the richest genus,Eccliseogyra, the three species previously recorded from Brazil were revised:E. brasiliensisandE. maracatu, previously known only from their respective type series, were re-examined. Newly available material ofE. maracatuexpanded the known geographic range of this species to off south-east Brazil.Eccliseogyra nitidais now recorded from north-eastern to south-eastern Brazil, as well as from the Rio Grande Rise. Three species ofEccliseogyraare newly recorded from the South Atlantic:E. monnioti, previously known from the north-eastern Atlantic, occurs off eastern Brazil and on the Rio Grande Rise; its protoconch is described for the first time, confirming its family allocation.Eccliseogyra pyrrhiasoccurs off eastern Brazil and on the Rio Grande Rise, andE. folinioff eastern Brazil. The genusIphitusis newly recorded from the South Atlantic.Iphitus robertsiwas found off northern Brazil, although the shells show some differences from the type material, with less-pronounced spiral keels. Additional new finds showed thatIphitus cancellatusranges from eastern Brazil to the Rio Grande Rise, and Iphitusnotiossp. nov. is restricted to the Rio Grande Rise.Narrimania, previously recorded from Brazil based on dubious records, is confirmed, including the only two living species described for the genus:N. azelotes, previously only known from the type locality in Florida, andN. concinna, previously known from the Mediterranean. A third species,Narrimania raquelaesp. nov. is described from eastern Brazil, diagnosed by its numerous and thinner cancellate sculpture. To the three species ofOpaliopsispreviously known from Brazil, a fourth species,O. arnaldoisp. nov., is added from eastern Brazil, and diagnosed by its very thin spiral sculpture, absence of a varix, and thinner microscopic parallel axial striae.Papuliscala nordestina, originally described from north-east Brazil, is recorded off eastern Brazil and synonymized withP. elongata, a species previously known only from the North Atlantic.

II.—Further Notes on the Petrography of South Georgia

1916 ◽  
Vol 3 (10) ◽  
pp. 435-441 ◽  
Author(s):  
G. W. Tyrrell
Keyword(s):  
East Coast ◽  
The South ◽  
South Georgia ◽  
South Eastern ◽  
North East ◽  
The North ◽  
New Material ◽  
Rock Specimens

The new material on which this paper is based has lately been received through Mr. D. Ferguson, who recently investigated the geology of the island, and collected the rocks described in an earlier paper. It consists of twenty-seven rock specimens from the south-eastern end of the island, between Cape Disappointment and Cooper Island, and nine specimens from Gold Harbour on the north-east coast between Cooper Island and Royal Bay. All these were collected by the staff of the South Georgia Co., Ltd., under the instructions of Mr. Th. E. Salvesen, managing director, of Leith.

Part VI. The Cyclopean Terrace Building and the Deposit of Pottery beneath It

1954 ◽  
Vol 49 ◽  
pp. 267-291
Author(s):  
Elizabeth B. Wace
Keyword(s):  
Contour Line ◽  
The South ◽  
Main Road ◽  
North West ◽  
North East ◽  
The North ◽  
South West

The Cyclopean Terrace Building lies to the north-west of the Lion Gate on the northern end of the Panagia Ridge and faces almost due west across the valley of the Kephissos and modern main road from Corinth to Argos. It lies just below the 200 m. contour line, and one terrace below the houses excavated in 1950–51 by Dr. Papadimitriou and Mr. Petsas to the east at the same end of the ridge. The area contains a complex of buildings, both successive and contemporary, and in view of the discovery of structures both to the south-west and, by the Greek Archaeological Service, to the north-east it is likely that this whole slope was covered by a portion of the outer town of Mycenae. This report will deal only with the structure to which the name Cyclopean Terrace Building was originally given, the so-called ‘North Megaron’, supported by the heavy main terrace wall.The excavation of this structure was begun in 1923. The main terrace wall was cleared and two L.H. IIIC burials discovered in the top of the fill in the south room. In 1950 it was decided to attempt to clear this building entirely in an endeavour to find out its date and purpose. The clearing was not, however, substantially completed until the close of the 1953 excavation season, and this report presents the available evidence for the date as determined by the pottery found beneath the building; the purpose is still a matter for study, though various tentative conclusions can be put forward.

On the Chloride Waters of Great Britain

1945 ◽  
Vol 82 (6) ◽  
pp. 267-273 ◽  
Author(s):  
W. Anderson
Keyword(s):  
Great Britain ◽  
The South ◽  
Very Old ◽  
North East ◽  
The North ◽  
Exact Position ◽  
The Many ◽  
The Village ◽  
Made In

Formerly there were several surface brine springs in the North-East Coalfield; to-day there are none. From the many accounts of their occurrence nothing has been learned of their exact position, and very little of the composition of their waters. The earliest record, made in 1684, described the Butterby spring (Todd, 1684), and then at various times during the next two centuries brine springs at Framwellgate, Lumley, Birtley, Walker, Wallsend, Hebburn, and Jarrow were noted. In particular the Birtley salt spring is often mentioned, and on the 6-in. Ordnance map, Durham No. 13, 1862 edition, it is sited to the south-east of the village. Although no record has been found there must have been either a brine spring or well at Gateshead, for the name of the present-day suburb, Saltwell, is very old, and brine springs are still active in the coal workings of that area.

scholarly journals Notes on some Lower Palaeozoic to Tertiary faunas from eastern North Greenland

1974 ◽  
Vol 65 ◽  
pp. 18-23
Author(s):  
J.S Peel ◽  
P.R Dawes ◽  
J.C Troelsen
Keyword(s):  
Field Work ◽  
The South ◽  
Initial Field ◽  
North East ◽  
The North ◽  
Lower Palaeozoic ◽  
North Greenland

The north-east 'corner' of Greenland is geologically probably the least known region in North Greenland. Various expeditions have visited the coastal parts but geological detail, particularly faunal information, has remained surprisingly scarce. Initial field work by Koch (1923, 1925) and Troelsen (1949a, b, 1950) showed that a Precambrian to Silurian section - unfolded in the south, folded in the north - was unconformably overlain by a Carboniferous to Tertiary section, now referred to as the Wandel Sea basin (Dawes & Soper, 1973).

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