Features of layered variability of integrated physico-chemical parameters in the snow cover in the middle taiga zone in the north-east of the European plain.

2018 ◽  
Vol XXII (2) ◽  
Keyword(s):  
Snow Cover ◽  
Middle Taiga ◽  
Taiga Zone ◽  
Chemical Parameters ◽  
North East ◽  
The North ◽  
Physico Chemical

Assessment of groundwater quality in the Seraidi region (north-east of Algeria) using NSF-WQI

2016 ◽  
Vol 16 (4) ◽  
pp. 1132-1137 ◽  
Author(s):  
Nawel Benouara ◽  
Abdelaziz Laraba ◽  
Lamia Hachemi Rachedi
Keyword(s):  
Water Resources ◽  
Groundwater Quality ◽  
Fecal Coliforms ◽  
Critical Element ◽  
Chemical Parameters ◽  
Political Issues ◽  
North East ◽  
The North ◽  
Physico Chemical ◽  
Groundwater Samples

Scarcity of water, pollution load, political issues and rising population have drawn great attention for proper management of water resources such as groundwater in the 21st century. The evaluation of groundwater quality is a critical element in the assessment of water resources. The quality/potability of water that is consumed defines the baseline of protection against many diseases and infections. The present study aims to calculate the water quality index (WQI) by the analysis of seven physico-chemical parameters according to the National Sanitation Foundation (NSF) to assess the suitability of water for drinking, irrigation purposes and other human uses. In the present investigation, ten groundwater samples were collected from various parts of Seraidi municipality area located in the north-east of Algeria, Physico-chemical parameters such as pH, temperature, dissolved oxygen, phosphates, nitrates, turbidity and fecal coliforms were analyzed. The overall WQI values for all the samples were found to be in the range of 68–86, which reveals the fact that the quality of all the samples is only medium to good and could be used for drinking and other domestic uses only after proper treatment.

Peculiarities of the course of the postpartum period in domestic reindeer females, its morphophysiology and behavioral reactions in the North-East of Russia (Republic of Sakha)

2020 ◽  
pp. 99-105
Author(s):  
V. Fedorov ◽  
E. Sleptsov ◽  
K. Plemyashov
Keyword(s):  
Postpartum Period ◽  
Reproductive Function ◽  
Complex Problem ◽  
Climatic Conditions ◽  
Taiga Zone ◽  
Behavioral Reactions ◽  
North East ◽  
The North ◽  
The Republic ◽  
Mountain Taiga

A growth in the number of deer and an increase in their productivity are closely related to the solution of the complex problem of reproduction and rational use of deer females. Significant damage to reindeer husbandry is caused by the barrenness of northern domestic deer, the level of which has been quite high in recent years. So, in the Republic of Sakha, on 01.01.2020, the number of domesticated reindeer was 152,068, of which female deer and heifers — 71,818, offspring per 100 females — 59, business yield amounted to 52 fawns per 100 females. The causes of infertility are very diverse, as the natural and climatic conditions of the breeding zones have a significant influence on the reproductive function of reindeer. In Yakutia, the main population of northern domestic deer is bred in mountain taiga and tundra natural-climatic zones, so there are about 55 thousand deer in the mountain taiga zone and more than 65 thousand deer in the tundra zone. In this regard, the study of the peculiarities of the postpartum period course in domestic reindeer females, its morphophysiology, and behavioral reactions depending on the natural and climatic conditions of breeding is of great importance.

scholarly journals Assessment of diversity and physico-chemical parameters of cyanobacteria, diatoms and other algal species in the paddy fields of Belagavi district, Karnataka

2020 ◽  
Vol 7 (3) ◽  
pp. 378-382
Author(s):  
Santoshkumar Jayagoudar ◽  
Pradeep Bhat ◽  
Ankita Magdum ◽  
Duradundi Sakreppagol ◽  
Laxmi Murgod ◽  
...  
Keyword(s):  
Algal Species ◽  
Soil Samples ◽  
Chemical Parameters ◽  
Range Estimation ◽  
The North ◽  
Physico Chemical ◽  
Water And Soil Samples ◽  
Study Sites ◽  
Good Range

Algae are the diverse group of organisms in the soil and aquatic environment. The role of them in soil fertility enhancement has been extensively studied worldwide. Belagavi is a tropical agricultural belt in the North Karnataka region with highly fertile soil. Water and soil samples were collected randomly from the paddy field of 15–20 well-distributed spots in 4 selected locations viz Kusumali, Jamboti, Kinaye and Piranwadi. The identification revealed the presence of 94 species and 71 genera in the investigated sites. Among all, 62 species belonged to Bacillariophyceae, 14 species to Chlorophyceae, 10 species to Cyanophyceae, 3 to Xanthophyceae, followed by Trebouxiophyceae and Zygnematophyceae (2 species each) and one species of Ulvophyceae. The maximum number of 62 species was recorded from Kusamali, followed by 49 species in Kinaye, 44 in Jamboti and 35 in Piranwadi. The month of February had the highest number of species (61), decreased to 45 in March, 42 in April and 37 in May. Among the physicochemical parameters analysed for the soil samples, it was found that the pH of the soil is slightly acidic in all the study sites ranged between 5.03–5.85. Further, the electrical conductivity (EC) varied from 0.27–0.345 dS/m, found to be in a good range. Estimation of available micro and macronutrients of soil were measured, and it was found to be at low to moderate levels. The present study indicates the extensive distribution of different classes of algae in the rice fields of four study locations in Belagavi.

The waterbodies of the Dallol volcano: A physico-chemical and geo-microbial survey

2020 ◽  
Author(s):  
Hugo Moors ◽  
Miroslav Honty ◽  
Carla Smolders ◽  
Ann Provoost ◽  
Mieke De Craen ◽  
...  
Keyword(s):  
Saline Water ◽  
Halophilic Archaea ◽  
Mining Area ◽  
Ex Situ ◽  
Base Region ◽  
The South ◽  
North East ◽  
The North ◽  
Physico Chemical

<p>The geological extreme Dallol region, located around the Dallol volcano in the north-east of Danakil depression (Ethiopia), is considered as one of the harshest and hottest places on Earth. The geology is made up of years and years of evaporates accumulation. Volcanic activity generates ascending brines that may cross and mix with aquifers from inflowing meteoric water originating from the Ethiopian highlands on the east of the Danakil depression. When these mixtures reach the surface they can generate hydrothermal springs giving rise to waterbodies in the form of small ponds or lakes. During the Europlanet 2018 Danakil field expedition, ten of these saline waterbodies were extensively studied by <em>in situ</em> measurements and <em>ex situ</em> geo–physico-chemical and –microbiological analyses of collected samples, liquids as well as sediments.</p><p>The <em>in situ</em> physico-chemical measurements clearly indicated the extreme nature of all ten investigated lakes. Laboratory analyses of the collected batch samples of liquids and sediments confirmed the extreme character of the waterbodies and complements our geological survey of the region with valuable geo–chemical and –microbiological data.</p><p>Based on our analytical results, the relative small Dallol region can still be subdivided into three geological smaller areas: the outcrop zone, the volcanic base region and the distant south area. The outcrop zone is dominated by sodium, iron and potassium. Oxidation processes in the outflowing superheated ferrous and sulfidic rich brine give rise to some of the most acidic ponds on our planet. In the ponds and lakes of the volcanic base region, incredible high amounts of calcium and/or magnesium can remain in their dissolved form as the most dominant and quasi only available anion is chloride. This region is host for the most saline water body on Earth. Chemical analysis of the lakes of the distant south area show that sodium is by far the most dominant cation. It is therefore no surprise that the large Karum Lake in the south region is economically exploited for the mining of sodium chloride.</p><p>Our mineralogy analyses render results that are completely in line with the observed geochemistry of the waterbodies. Halite and sylvite are the most present minerals in the Dallol outcrop zone associated with some gypsum and in one case with anhydrite. The geology around the waterbodies of volcanic base zone are a little bit more divers. On the shores of the Gaet’ale Pond tachyhydrite, chloromagnesite, halite and sylvite is determined, while the Black Lake is surrounded by bischofite and carnalite. Logically, the mineralogy of the south area, the salt mining area, is dominated by halite and sylvite.</p><p>Apparently, the geochemistry of the outcrop zone and volcanic base region is so harsh that no extremophilic organism is able to survive in these areas. Only in the distant south area did we find indications of the presence of halophiles. Besides the bacterial genus <em>Salinibacter</em>, our 16S rDNA microbiological fingerprinting indicates the presence of halophilic archaea like:  <em>Halobaculum sp., Halobellus sp., Halomicroarcula sp., Halorientalis sp.</em> with the majority of the population being <em>Candidatus Nanosalina sp</em>.</p>

scholarly journals Morphological features of the plant Pyrethrum majus (Desf.) Tzvel. and variability of the component composition of essential oil during introduction in the North-East of the European part of Russia

2020 ◽  
Vol 9 (4) ◽  
pp. 142-148
Author(s):  
Nadezhda Vasilyevna Portnyagina ◽  
Vasiliy Vitalyevich Punegov ◽  
Elmira Elizbarovna Echishvili ◽  
Marina Gennadyevna Fomina ◽  
Ivan Vladimirovich Gruzdev
Keyword(s):  
Essential Oil ◽  
Weather Conditions ◽  
Component Composition ◽  
Komi Republic ◽  
Middle Taiga ◽  
Aboveground Phytomass ◽  
Middle Taiga Subzone ◽  
North East ◽  
The North ◽  
European Part Of Russia

The paper presents the results of the research on the growth, development, and biochemical evaluation of introduced Pyrethrum majus plants in the middle taiga subzone of the Komi Republic. It is established that in the conditions of culture the species is characterized by a high stability and winter hardiness. The phenology and dynamics of plant growth were studied. Morphological parameters of vegetative and generative shoots were determined. The yield of essential oil from the aboveground phytomass of P. majus and its component composition were studied. It was found that the content of essential oil of flowering plants varied over the years of research from 0,25 to 1,41% and depended on the weather conditions of the growing season. More than 190 components were found in the essential oil of P. majus plants using the method of GLC analysis, 48 of them were identified. The main terpenoids in the essential oil were S-(+) carvone (5465%), -tuyon (610%), TRANS-and CIS-p-Menta-2,8-dienols (2,32,8%), 1,8-Cineol (1,42,9%), CIS Menta-1(7)8-Dien-2ol (1,52,1%), germacrene d (1,21,8%) -cadinol (0,51,5%), -muurolol (0,22,6%). It was found that the component composition of the essential oil from perennial plants P. majus corresponds to the carvone-Tuyon chemotype and did not change significantly due to the meteorological conditions of the environment. Taking into account a high adaptation of plants of this species to the conditions of the middle taiga subzone of the Komi Republic, high indicators of aboveground phytomass with a sufficient content of essential oil, P. majus can be successfully cultivated in the North as a promising spicy-aromatic medicinal and ornamental plant.

(A review) B. Yu. Teteryuk. Flora and vegetation of ancient lakes at the European North-East of Russia. St. Petersburg: Nauka, 2012. 237 p.

2013 ◽  
pp. 135-137
Author(s):  
N. V. Matveyeva
Keyword(s):  
European Russia ◽  
Western Slope ◽  
Ancient Lakes ◽  
Taiga Zone ◽  
Glacial Lakes ◽  
North East ◽  
The North ◽  
European North

In the monograph by B. J. Teteruk summarizes information about the flora and vegetation of 3 lakes in the Yamozero, Sindor and Donty along the Western slope of the Timan ridge in the North-East of European Russia in the taiga zone and are relics of glacial lakes.

Classification of boreal forests in the North of European Russia. I. Oligotrophic coniferous forests

2007 ◽  
pp. 61-81 ◽  
Author(s):  
O. V. Morozova ◽  
L. B. Zaugolnova ◽  
L. G. Isaeva ◽  
V. A. Kostina
Keyword(s):  
Boreal Forests ◽  
Middle Part ◽  
Tree Canopy ◽  
European Russia ◽  
Pine Forests ◽  
Middle Taiga ◽  
Taiga Zone ◽  
Northern Forest ◽  
North West ◽  
The North

Results of a syntaxonomical study of the oligotrophic forests of northern European Russia are presented. The main forest types have been classified into 2 orders of the class Vaccinio-Piceetea, 4 alliances, 6 associations and 1 community. The new alliance Empetro-Piceion all. nov., which includes zonal spruce and birch northern forest association Empetro-Piceetum, has been established. These communities are formed according to cold temperature and high (sometimes temporarily) soil moisture and are characterized by the lower tree canopy, mosaic herb and moss-lichen layers with boreal mosses, sphagnum and lichens. In the middle taiga subzone these communities are replaced by Eu-Piceetum myrtilletosum. The forests with lichens are referred to order Cladonio-Vaccinietalia and divided into 4 associations. Lichen pine forests of the north-west of boreal zone were described as ass. Flavocetrario nivalis—Pinetum ass. nov. This association with a great number of lichens is differentiated by Cladonia arbuscula subsp. mitis, Flavocetraria nivalis, Cetraria ericetorum, Stereocaulon grande, Dicranum fuscescens, D. drummondii, Nephroma arcticum and species of Cladonia. The ass. Cadonio arbusculae—Pinetum (Caj. 1921) K.-Lund 1967 contains lichen pine forests with lower number of lichens and is distributed mostly in middle part of the taiga zone. The spruce-pine forests with mixed moss-lichen cover correspond to ass. Vaccinio-Pinetum. Ass. Hedysaro-Laricetum represents rich and well differentiated larch forests in the east of European Russia.

scholarly journals New varieties and hybrids of potato recommended for cultivation in the middle taiga zone of european north-east*

2019 ◽  
Vol 1 (1) ◽  
pp. 21-24 ◽  
Author(s):  
N. T. Chebotarev ◽  
A. A. Yudin ◽  
P. I. Konkin ◽  
A. V. Oblizov
Keyword(s):  
Vitamin C ◽  
Matter Content ◽  
Middle Taiga ◽  
High Yield ◽  
Soil Parameters ◽  
Taiga Zone ◽  
Dry Matter Content ◽  
Potato Tubers ◽  
Potato Varieties ◽  
North East

In 2014-2017 in terms of the Republic of Komi conducted a comparative test of two varieties (Saranac and Memory Field) and hybrids (1603-7 and 1657-7) potatoes. The soil of experimental plot is sod-podzolic, light loam, highly cultivated. Agrochemical soil parameters: humus-3,0-4,1%; pH -5,7 – 6,6; P2O5 – 500-595 mg/kg of soil, K2O-130-170 mg/kg of soil. On the sod-podzolic wellcultivated soil, the yield of potato tubers on the 60-65 day from the planting period, on average for 4 years, amounted to 5.1-11.4 t/ha, while the yield of control potato varieties (Luck and Nevsky) was 7.6–9.9 t/ha.The highest yield on the 60-65 day was obtained from hybrid 1657-7 – 11.4 t / ha and exceeded the control varieties by 50.0% and 15.1%, respectively. Varieties of Saranac and Memory Field it was 10.2–8.9 t/ha. 90-95 day, from the date of planting, the average yield of varieties and hybrids of potatoes amounted to 26.2–38,0 t/ha. The highest yields of potato tubers obtained from the hybrid 1657-7 – 38,0 t/ha, a fairly high yield of potatoes was the varieties Saranac – at 33.9 MT/ha and Memory Field – 32.0 t/ha. dry matter content in tubers of potato varieties: Saranac – 21,7 %, P Field 23,4%, in the control potato varieties it was 20.8 and 21.3%. The amount of starch in tubers of potato varieties: Saranac -15,5%, P Field – of 15.6%, control varieties: the Luck of 14.5%, and a budget of 14.5%. According to the content of vitamin C, the best was a hybrid of 1657-12, 5%, in varieties: Zyryanets and P. Polevoy amount of vitamin C was 10.0 and 10.8%, in control varieties: Luck – 9.5%, Nevsky – 14.0%.

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