scholarly journals NIGHT MIGRATION COMPLEX OF ENDEMIC AMFIPOD AS AN INDICATOR OF ENVIRONMENTAL STATE BAIKAL LAKE

2020 ◽  
Author(s):  
V.V. Takhteev ◽  
◽  
D.A. Batranin ◽  
I.O. Eropova ◽  
E.B. Govorukhina ◽  
...  
Keyword(s):  
Organic Matter ◽  
Lake Baikal ◽  
Aquatic Vegetation ◽  
Pelagic Zone ◽  
Baikal Lake ◽  
Anthropogenic Eutrophication

With the ongoing anthropogenic eutrophication of the Lake Baikal there is an increase in the abundance not only of aquatic vegetation, but also organismsconsumers. As consumers of vegetable detritus are crustaceans – amphipods, which, by eating detritus, partially reduce the pollution of the lake with rotting organic matter. A significant increase in their number is evidenced by the increase in the abundance of amphipods in the nocturnal migratory complex in the coastal pelagic zone.

Seasonal Dynamics of Ciliata and Microalgae in the Pelagic Zone of the Southern Part of Lake Baikal

2013 ◽  
Vol 49 (1) ◽  
pp. 12-20
Author(s):  
L. A. Obolkina ◽  
N. V. Potapskaya ◽  
O. I. Belykh ◽  
G. I. Pomazkina ◽  
V. V. Blinov ◽  
...  
Keyword(s):  
Lake Baikal ◽  
Seasonal Dynamics ◽  
Pelagic Zone

scholarly journals MICROSATELLITE POLYMORPHISM WITHIN TWO LAKE BAIKAL OILFISH SPECIES (COMEPHORUS LACEPEDE, 1801)

2007 ◽  
Vol 5 (2) ◽  
pp. 50-57 ◽  
Author(s):  
Veronika I Teterina ◽  
Lubov V Sukhanova ◽  
Sergey V Kirilchik
Keyword(s):  
Genetic Polymorphism ◽  
Genetic Differentiation ◽  
Lake Baikal ◽  
Microsatellite Loci ◽  
Passive Transfer ◽  
Microsatellite Analysis ◽  
Microsatellite Polymorphism ◽  
Baikal Lake ◽  
Water Currents ◽  
Cottus Gobio

Intraspecific genetic polymorphism of a Baikal Lake endemic, big Baikal oilfish (Comephorus baicalensis Pallas, 1776), was evaluated based on microsatellite analysis. The obtained results have compared to the results received earlier for a little Baikal oilfish (C. dybowski Korotneff, 1905). Six microsatellite loci designed for the European sculpin, Cottus gobio, were used. Big Baikal oilfish samples were tested from the three Baikal trenches (southern, middle, northern). Average values of F<sub>ST</sub> and R<sub>ST</sub>indexes between the samples did not exceed 0,02 that point to weak intraspecific genetic differentiation. Big Baikal oilfish had the smaller allele variety, the greater deficit of heterozygotes and presence of low-molecular alleles in comparison with little Baikal oilfish. The values of genetic differentiation were equaled F<sub>ST</sub> = 0,138 and R<sub>ST</sub> = 0,244 for all loci between cumulative samples of little and big Baikal oilfish. Analysis of microsatellite polymorphism has showed that both a big and little Baikal oilfishes are represented by single populations. The factor promoting panmixia within the Baikal oilfish species is apparently a passive transfer of juvenile and adult fishes by water currents.

scholarly journals Average annual background quantity of chemical elements and organic matter in the streams of the "River" environment flowing into Lake Baikal reservoirs

2020 ◽  
Vol 5 (4) ◽  
pp. 433-447
Author(s):  
Olga Yu. Astrakhantseva ◽  
◽  
Oleg Yu. Palkin ◽  
Keyword(s):  
Organic Matter ◽  
Lake Baikal ◽  
Chemical Elements ◽  
The South ◽  
River Flows ◽  
Chemical Balance ◽  
Biogenic Components ◽  
Annual Amount ◽  
Natural Component

The aim of the article is to assess the average long-term background hydrochemical input of chemical elements and organic matter from the flows of the natural component of the environment "Rivers" flowing into the South, Selenginsky, Middle and North reservoirs of Lake. Baikal. The results of calculation of the average annual amount (g/year) of chemical elements and organic matter (Na+, K+, Ca2+, Mg2+, Al, Si, Mn2+, Feобщ , SO42-, HCO3-, Cl-, NO3-, PO43-, Cr, Cu, Cd, Hg, Pb, Sr, Zn, Co, U, V, Mo, Cорг, Nорг, Pорг, Sорг, CO2, Ti) in the streams of the natural component of the environment "Rivers" flowing into the South, Selenginsky, Sredniy, Severny reservoirs of Lake Baikal are presented. The scale of the river chemical input into the reservoirs and the contribution of the "River" flows to the chemical balances of these reservoirs have been determined. It has been established that only in the Selenga reservoir the rivers carry a significant amount of matter (about 3%). The contribution of river flows to the chemical balance of the reservoir is 3.54; 5.4; 17.5 and 21.5% in the South, Selenga, Middle and North reservoirs, respectively. The rivers flowing into the Selenga reservoir carry 70.6% of the total amount of matter brought by the rivers into the lake. Whereas the rivers of the Northern, Middle and Southern reservoirs carry 14.0; 11.6 and 3.8% of the matter. Only in the Selenga and Northern reservoirs, the rivers (tributaries) are the main sources of macrocomponents (K+, Na+, Ca2+, SO42-, CO3-, Cl-), a number of microcomponents (Rb, Mo, Hg, Sr, and Cu and Zn in the Selenga river-), organic matter (Corgг, Norg, Porg), and biogenic components in the Selenga reservoir (NO3-).

scholarly journals Spatial variability of biogenic elements and organic carbon content in the tributaries of Lake Baikal

2020 ◽  
Vol 163 ◽  
pp. 05012
Author(s):  
Ekaterina Sharapova ◽  
Ludmila Efimova ◽  
Irina Denisova ◽  
Aida Ermekova ◽  
Mikhail Lychagin ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Spatial Variability ◽  
Lake Baikal ◽  
Aquatic Vegetation ◽  
Chemical Elements ◽  
Organic Phosphorus ◽  
Biogenic Elements ◽  
Organic Carbon Content ◽  
Mineral Phosphorus ◽  
Erosion Processes

The article considers the features of biogenic elements and organic carbon (Corg) content spatial variability in the Lake Baikal tributaries. The role of hydrological conditions and landscape-geochemical features in the chemical elements flow formation is shown. It was found that organic carbon in the river waters is represented mainly by its dissolved form. In the lower reaches of the Selenga, erosion processes and economic activity in the catchment area increase the proportion of suspended forms of organic carbon and mineral phosphorus. In the river delta under the influence of the sedimentation and the intake of organic matter formed during aquatic vegetation decomposition, the content of dissolved Corg increases with a contemporary decrease in its suspended form. As a result of intensification of production and destruction processes in well-heated areas of the delta, a significant decrease in the concentrations of mineral phosphorus and an increase in organic phosphorus occur.

Towards a Molecular Systematics of the Lake Baikal/Lake Tuva Sponges

2009 ◽  
pp. 111-144 ◽  
Author(s):  
Matthias Wiens ◽  
Petra Wrede ◽  
Vladislav A. Grebenjuk ◽  
Oxana V. Kaluzhnaya ◽  
Sergey I. Belikov ◽  
...  
Keyword(s):  
Lake Baikal ◽  
Molecular Systematics ◽  
Baikal Lake

Horizontal macroturbulent exchange and dissipation rate of turbulent energy in the pelagic zone of Lake Baikal

2009 ◽  
Vol 30 (1) ◽  
pp. 30-34
Author(s):  
A.A. Zhdanov ◽  
N.G. Granin ◽  
R.Yu. Gnatovsky ◽  
V.V. Blinov
Keyword(s):  
Lake Baikal ◽  
Dissipation Rate ◽  
Turbulent Energy ◽  
Pelagic Zone

Transformation of Organic Matter by a Microbial Community in Sediments of Lake Baikal under Experimental Thermobaric Conditions of Protocatagenesis

2016 ◽  
Vol 33 (7) ◽  
pp. 599-606 ◽  
Author(s):  
Olga N. Pavlova ◽  
Tamara I. Zemskaya ◽  
Anna V. Lomakina ◽  
Olga V. Shubenkova ◽  
Andrey Y. Manakov ◽  
...  
Keyword(s):  
Organic Matter ◽  
Microbial Community ◽  
Lake Baikal ◽  
Thermobaric Conditions ◽  
Transformation Of Organic Matter

scholarly journals Environmental features and dynamics of plankton communities in a mountain glacial moraine lake (Baikal Lake basin, Russia)

2020 ◽  
Vol 5 (3) ◽  
Author(s):  
Ekaterina Yu. Afonina ◽  
◽  
Natalya A. Tashlykova ◽  
Alexey P. Kuklin ◽  
Gazhit Ts. Tsybekmitova ◽  
...  
Keyword(s):  
Lake Baikal ◽  
Lake Basin ◽  
Baikal Lake ◽  
Environmental Features ◽  
Moraine Lake ◽  
Plankton Communities
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