scholarly journals Middle Neopleistocene sediments in the lower course of the Pechora River

2021 ◽  
Vol 5 ◽  
pp. 37-43
Author(s):  
N. N. Vorobyev ◽  
Keyword(s):  
Fine Earth ◽  
Quaternary Deposits ◽  
Petrographic Composition ◽  
North West ◽  
The North ◽  
Coarse Material ◽  
North Eastern ◽  
Pechora River

The results of lithological studies of Quaternary deposits in the coastal outcrops of the valley of the lower course of the river are presented. Pechora. In the latitudinal section of the Pechora, two horizons of boulder loams (moraines) and underlying horizons, dividing or overlapping the moraine strata, are exposed to intermoraine sediments of fluvial genesis. Based on the results of lithological studies of textural, granulometric and mineralogical features of fine earth of deposits and petrographic composition of coarse material, it was concluded that material was supplied during the formation of moraines from different terrigenous-mineralogical provinces. The formation of the lower Pechora (Dnieper) moraine is associated with the North-Eastern feeding province, and the upper Moscow (Vychegda) moraine, with the North-West Fennoscandian center of glaciation. The glacial genesis of boulder loams has been confirmed.

Stanowiska reliktowego gatunku Betula humilis (Betulaceae) w Dolinie Górnego Nurca na Nizinie Północnopodlaskiej

2019 ◽  
pp. 161-168
Author(s):  
Aleksander Kołos
Keyword(s):  
Drainage Ditches ◽  
North West ◽  
Hay Meadows ◽  
The North ◽  
South West ◽  
North Eastern ◽  
New Localities ◽  
Western Border ◽  
Betula Humilis ◽  
Trees And Shrubs

Betula humilis Schrank (shrubby birch) is among the most endangered shrub species in Poland. All localities are in the eastern and northern parts of the country, where the species reaches the western border of its geographical range in Europe. Betula humilis is disappearing in Poland due to wetland melioration and shrub succession. Over 80% of the localities described in Poland have not been confirmed in the last 20 years. Five new localities of B. humilis in the North Podlasie Lowland were recorded from 2008 to 2019 in the Upper Nurzec Valley (Fig. 1): 1–1.5 km south-west of Pawlinowo village (in the ATPOL GC7146 plot) and 1.5–2 km north-west of Żuki village (ATPOL GC7155, GC156 and GC166). The population near Pawlinowo (locality 1) is currently composed of ~80 individuals (101 individuals were noted in 2010) and is one of the largest populations in north-eastern Poland. Betula humilis grows there within patches dominated by Salix rosmarinifolia and megaforbs. The population at locality 5 is composed of 18 individuals. At the remaining localities, only 1–4 individuals were found, scattered along drainage ditches surrounded by hay meadows. At some of these localities the species is threatened with extinction. It is suggested to remove competitive trees and shrubs (mainly Populus tremula, Betula pubescens and Salix cinerea) in order to maintain the local populations.

scholarly journals Evaluation of Soil Moisture Variability in Poland from SMOS Satellite Observations

2019 ◽  
Vol 11 (11) ◽  
pp. 1280 ◽  
Author(s):  
Bogusław Usowicz ◽  
Jerzy Lipiec ◽  
Mateusz Lukowski
Keyword(s):  
Soil Moisture ◽  
North West ◽  
Moisture Contents ◽  
North East ◽  
The North ◽  
Linear Distance ◽  
Classical Statistics ◽  
Ocean Salinity ◽  
North Eastern ◽  
Smos Satellite

Soil moisture (SM) data play an important role in agriculture, hydrology, and climate sciences. In this study, we examined the spatial-temporal variability of soil moisture using Soil Moisture Ocean Salinity (SMOS) satellite measurements for Poland from a five-year period (2010–2014). SMOS L2 v. 551 datasets (latitudinal rectangle 1600 × 840 km, centered in Poland) averaged for quarterly (three months corresponding to winter, spring, summer, and autumn) and yearly values were used. The results were analysed with the use of classical statistics and geostatistics (using semivariograms) to acquire information about the nature of anisotropy and the lengths and directions of spatial dependences. The minimum (close to zero) and maximum soil moisture values covered the 0.5 m3 m−3 range. In particular quarters, average soil moisture did not exceed 0.2 m3 m−3 and did not drop below 0.12 m3 m−3; the corresponding values in the study years were 0.171 m3 m−3 and 0.128 m3 m−3. The highest variability of SM occurred generally in winter (coefficient of variation, CV, up to 40%) and the lowest value was recorded in spring (around 23%). The average CV for all years was 32%. The quarterly maximum (max) soil moisture contents were well positively correlated with the average soil moisture contents (R2 = 0.63). Most of the soil moisture distributions (histograms) were close to normal distribution and asymmetric data were transformed with the square root to facilitate geostatistical analysis. Isotropic and anisotropic empirical semivariograms were constructed and the theoretical exponential models were well fitted (R2 > 0.9). In general, the structural dependence of the semivariance was strong and moderate. The nugget (C0) values slightly deceased with increasing soil moisture while the sills (C0 + C) increased. The effective ranges of spatial dependence (A) were between 1° and 4° (110–440 km of linear distance). Generally, the ranges were greater for drier than moist soils. Anisotropy of the SM distribution exhibited different orientation with predominance from north-west to south-east in winter and spring and changed for from north-east to south-west or from north to south in the other seasons. The fractal dimension values showed that the distribution of the soil moisture pattern was less diverse (smoother) in the winter and spring, compared to that in the summer and autumn. The soil moisture maps showed occurrence of wet areas (soil moisture > 0.25 m3 m−3) in the north-eastern, south-eastern and western parts and dry areas (soil moisture < 0.05 m3 m−3) mainly in the central part (oriented towards the south) of Poland. The spatial distribution of SM was attributed to soil texture patterns and associated with water holding capacity and permeability. The results will help undertake appropriate steps to minimize susceptibility to drought and flooding in different regions of Poland.

Population genetics of two tropical sharks, Carcharhinus tilstoni and C. sorrah, in Northern Australia

1989 ◽  
Vol 40 (5) ◽  
pp. 541 ◽  
Author(s):  
S Lavery ◽  
JB Shaklee
Keyword(s):  
Eastern Coast ◽  
Population Subdivision ◽  
Starch Gel Electrophoresis ◽  
Northern Australia ◽  
Tissue Samples ◽  
North West ◽  
The North ◽  
North Eastern ◽  
Starch Gel ◽  
Sufficient Variation

The genetic structure of the Australian populations of Carcharhinus tilstoni and C. sorrah was investigated by starch gel electrophoresis. Tissue samples were taken from 1580 sharks from throughout the fishery, which extends from the North-West Shelf (off Western Australia) to the north-eastern coast of Queensland. From a total of 47 enzyme loci screened in each species, 13 proved to be polymorphic (P0.99) for at least one species, with only 5 loci for each species showing sufficient variation (P0.95) to be of use in the analysis of population structure. Mean heterozygosity values were relatively low: 0.037 for C. tilstoni and 0.035 for C. sorrah. A low level of population subdivision was found within each species, with FST values of 0.0094 for C. tilstoni and 0.0076 for C. sorrah. There was insufficient evidence to suggest that there is more than one population of either species of shark in Australian waters.

The Place of the North-Eastern Transvaal Sotho in the South Bantu Complex

Africa ◽  
1938 ◽  
Vol 11 (3) ◽  
pp. 265-293 ◽  
Author(s):  
Eileen Jensen Krige
Keyword(s):  
Total Population ◽  
The West ◽  
North West ◽  
Effective Barrier ◽  
North East ◽  
The North ◽  
North Eastern ◽  
Game Reserve ◽  
Olifants River ◽  
Opening Paragraph

Opening ParagraphThe Sotho of the North-Eastern Transvaal Lowveld occupy an area with fairly well-marked geographical boundaries. To the east, the Game Reserve, low-lying, unhealthy, very sparsely populated even in the old days, remains an effective barrier to contact with and further migrations from the Shangana-Tonga of Portuguese East Africa. South are the Olifants River and the towering Drakensberg range curving north-west then northwards to merge into the well-marked escarpment on the west dividing Lowveld from Highveld. On the north the Klein Letaba river roughly demarcates our area from the Venda and the Shangana-Tonga of the Knobnose Location. The Sotho-speaking Venda of Tswale and Moila, who fall well within this area, resemble in culture their Sotho-ized neighbours more than their own Venda kin to the north; but the Shangana- Tonga, who occupy most of the lower-lying eastern and north-eastern portion of the area and comprise at least one-third of its total population, are unassimilated strangers of different stock coming from the north-east and east. They have been entering since about 1840, usually in small bands, at first seeking the protection of and subjecting themselves to the Sotho owners of the land. On the arrival of the white man, some of their headmen were granted independent locations which have served as nuclei for the building up of more united tribal groups. (See accompanying map.)

V.—The Fossil Flora of the Ingleton Coal-Field (Yorkshire)

1912 ◽  
Vol 9 (2) ◽  
pp. 80-82 ◽  
Author(s):  
E. A. Newell Arber
Keyword(s):  
Geological Survey ◽  
Fossil Flora ◽  
Coal Field ◽  
Upper Carboniferous ◽  
North West ◽  
The North ◽  
North Eastern ◽  
Coal Measures ◽  
Coal Fields

The Upper Carboniferous rocks of the Ingleton Coal-field in North-West Yorkshire present a difficult study, and at the present time they are very imperfectly known. As mapped by the Geological Survey, there is apparently a perfect succession, passing up from the Yoredales, through the Millstone Grits, to the Lower and Middle Coal-measures. The coal-measures are in part overlain hy a series of red rocks, which have been assigned to the Permian, as in the case of other of the Midland Coal-fields. In the index of the Survey map of the north-eastern portion of the coal-field, the Deep Coal is taken as the top of the Lower, and the bottom of the Middle Coal-measures.

scholarly journals Appearance of the common paper nautilus Argonauta argo related to the increase of the sea surface temperature in the north-eastern Atlantic

2002 ◽  
Vol 82 (5) ◽  
pp. 855-858 ◽  
Author(s):  
A. Guerra ◽  
A.F. González ◽  
F. Rocha
Keyword(s):  
Surface Temperature ◽  
Sea Surface Temperature ◽  
First Record ◽  
Mature Female ◽  
Sea Surface ◽  
North West ◽  
The North ◽  
North Eastern ◽  
The Common ◽  
The Relationship

The relationship between the increase of the sea surface temperature observed off the Galician coast and the appearance of a tropical poikilotherm species Argonauta argo in these coasts is discussed. This is the first record of Argonautaargo in the north-west Iberian Peninsula. A female of this species was captured alive near the surface at dusk on 22 December 2000 in the Ria de Aldán (42°15′N–08°48′W). The specimen, a mature female of 70 mm mantle length and 96 mm shell diameter, died 36 hours after introduction in the tank.

§ VII.—The Lion Gate and Grave Circle Area

1923 ◽  
Vol 25 ◽  
pp. 9-146
Author(s):  
A. J. B. Wace ◽  
W. A. Heurtley
Keyword(s):  
The West ◽  
West Side ◽  
North West ◽  
The North ◽  
North Eastern ◽  
Pass Through ◽  
The Right

The ancient approach to the Lion Gate (Fig. 1) probably began at the north-west angle of the circuit wall, and thence gradually ascended to the gate itself. Thus all possible assailants would have to pass through the fire from the west side of the north-west angle, even before they reached the court-like area directly before the gate. Here they would be faced with a triple fire, from the gate, from the great rectangular bastion (1) which flanks the gate on the west, and from the wall immediately to the east of the gate. Exactly the same defensive plan is provided for the so-called Postern Gate in the northern circuit wall not far from the original north-eastern angle. Some have suggested that the terrace wall (2), which is called a kyklopische Stützmauer by Steffen, and juts below the north-west corner of the rectangular bastion, is part of the ancient roadway, which mounted here in zigzags, and then turned abruptly to the right to enter the gate.

scholarly journals Reproductive biology and diet of the grey sharpnose shark Rhizoprionodon oligolinx Springer, 1964 (Chondrichthyes: Carcharhinidae) from the north-eastern Arabian Sea

2017 ◽  
Vol 64 (4) ◽  
Author(s):  
G. B. Purushottama ◽  
Thakurdas . ◽  
V. Ramasubramanian ◽  
Gnyanaranjan Dash ◽  
K. V. Akhilesh ◽  
...  
Keyword(s):  
Reproductive Biology ◽  
Arabian Sea ◽  
Stomach Contents ◽  
Size At Maturity ◽  
Dietary Analysis ◽  
North West ◽  
The North ◽  
Northern Arabian Sea ◽  
North Eastern ◽  
Relationship Of

Information on reproductive biology is presented for the grey sharpnose shark Rhizoprionodon oligolinx Springer, 1964 (Chondrichthyes: Carcharhiniformes), collected off the north-west coast of India in the Arabian Sea. A total of 711 individuals, of 27.0 to 93.0 cm total length (TL), 180 to 2600 g total weight (TW) were used for the study. The lengthweight relationships were significantly different between the sexes. The size-at  maturity (Lm50) for females and males was estimated to be 62.3 and 59.5 cm TL respectively. Number of embryos ranged from 1 to 7 and the size at birth was estimated between 25 to 30 cm TL. Overall sex ratio favoured the females slightly at the rate of 1.27:1. There was significant positive correlation between maternal TL and number of embryos (p<0.001). Dietary analysis of stomach contents (%IRI) revealed that R. oligolinx feeds primarily on teleosts (95.5%), cephalopods (3.2%) and crustaceans (1.2%). This study presents the first detailed biological observation on size, sex composition, size-at-maturity (Lm50) and length-weight relationship of R. oligolinx from the northern Arabian Sea.

scholarly journals Scythian Barrow of the Second Half of the 5th Century BC in the Lower Dniester Region

2019 ◽  
pp. 6-19 ◽  
Author(s):  
Vitaliy Sinika ◽  
Sergey Lysenko ◽  
Nikolay Telnov ◽  
Sergey Razumov
Keyword(s):  
Black Sea ◽  
Left Bank ◽  
Black Sea Region ◽  
North West ◽  
The North ◽  
North Eastern ◽  
Stone Slab ◽  
The Moment ◽  
West Black Sea Region ◽  
Made In

Introduction. The article publishes and analyses the materials obtained during excavations of Scythian barrow 9 of the group Vodovod near the Glinoe village, Slobodzeysk district, on the left bank of the Lower Dniester. The barrow was surrounded by a ring ditch and contained two burials of medieval nomads - the main one, the Scythian, and the secondary, the inlet one. Methods. The mound was excavated by the method of parallel trenches, leaving stratigraphic profiles. When analyzing the materials obtained, a comparatively typological method was applied. Analysis. The main burial was made in a catacomb of unusual construction. The entrance well of the catacomb was filled with stone slabs and boulders characterized with utmost accuracy of production. Despite this, in antiquity the burial was robbed three times: through the entrance well, through the roof of the funeral chamber and through the robbery mine, which went to the burial chamber from the north-eastern floor of the mound. The preserved grave goods are represented with a handmade pot, an iron knife, an iron needle and an awl, a lead finial, a stone slab, a burned pebble, a piece of mineral paint, a wooden kneader, a bronze horse harness and golden pendants. The stone slab was made very carefully, and the wooden kneader is the second such find in the North-West Black Sea region. Bronze items of horse harness have no analogues in the Scythian burial complexes of the North Black Sea region. The construction of barrow 9 of the group Vodovod dates back to the second half of the 5th century BC and is determined on the basis of gold pendants, which analogies are known only in the Malyy Chertomlyk barrow in the Lower Dnieper region. Results.The most important is the fact that the studied barrow was found in the microzone (near the Glinoe village of the Slobodzeya district), where at the moment not only the Scythian burial sites of the 5th - 2nd centuries BC are known, but also a settlement of that time. This testifies to the continual dwelling of the Scythians on the left bank of the Lower Dniester River during this period.

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