scholarly journals Seasonal changes of free-radical initiated processes in cyprinids from the middle Volga river basin

2018 ◽  
Vol 21 (4) ◽  
pp. 478-482
Author(s):  
N. Pudovkin ◽  
V. Salautin ◽  
T. Garipov ◽  
R. Karimova ◽  
S. Salautina ◽  
...  
Keyword(s):  
Free Radical ◽  
River Basin ◽  
Seasonal Changes ◽  
Volga River ◽  
Volga River Basin ◽  
Middle Volga

Parasitoid complex (Hymenoptera, Eulophidae) of mining flies (Diptera, Agromyzidae) in the Middle Volga River basin

2013 ◽  
Vol 92 (5) ◽  
pp. 553-561 ◽  
Author(s):  
I. S. Strakhova ◽  
Z. A. Yefremova ◽  
M. von Tschirnhaus ◽  
E. N. Yegorenkova
Keyword(s):  
River Basin ◽  
Volga River ◽  
Volga River Basin ◽  
Parasitoid Complex ◽  
Middle Volga

scholarly journals The last Pleistocene glaciations phylogeography episode of Phaneroptera falcata (Poda, 1761) (Orthoptera: Tettigoniidae) in the Volga River basin based on the mtDNA Cytochrome C Oxidase subunit 1 (COI) gene fragment

2020 ◽  
Vol 6 ◽  
pp. 279-291
Author(s):  
Inessa O. Karmazina ◽  
Stanislav K. Korb ◽  
Andrey P. Mikhailenko ◽  
Alexander B. Ruchin ◽  
Nikolai V. Shulaev ◽  
...  
Keyword(s):  
Cytochrome C ◽  
Cytochrome C Oxidase ◽  
River Basin ◽  
Haplotype Diversity ◽  
Coi Gene ◽  
Gene Fragment ◽  
Volga River ◽  
Volga River Basin ◽  
Oxidase Subunit ◽  
Middle Volga

This study is to research the phylogeography of Phaneroptera falcata (Poda, 1761) in the Volga river basin based on the mtDNA Cytochrome C Oxidase subunit 1 (COI) gene fragment at the last Pleistocene glaciation episode. The studied location is the Volga river basin, a territory within the central and partially southern parts of European Russia; it includes the rivers Volga, Oka, Khoper and Don basins. We used the traditional molecular phylogeography methods: mtDNA COI gene fragment from the key locations within the studied area was sequenced and then analyzed (cladogram topology, haplotype diversity, cladogram calibration etc.). The phylogenetic tree shows the dispersion of our samples over the following regions: Lower Volga, Middle Volga, Lower Oka, Middle Oka, Upper Oka, Don basin, Khoper basin. Nine haplotypes determined from our samples; they are grouped into 7 haplogroups. Six of them are in the basins of the main rivers of the Volga region: three haplogroups - on the Oka (Upper, Middle and Lower Oka respectively), haplogroups of the Khoper and Don basins, and the haplogroup of the Middle Volga combining two subgroups – Lower and Middle Volga basins. The distribution of found haplogroups correlates with big river basins in the Volga area (Volga, Oka, Khoper, Don).

scholarly journals Distribution and species composition of zooplankton (rotifers and crustaceans) in the Basin of the Middle Volga River, Russia

2021 ◽  
Vol 9 ◽  
Author(s):  
Oksana Mukhortova ◽  
Stepan Senator ◽  
Elena Unkovskaya
Keyword(s):  
Species Composition ◽  
River Basin ◽  
Native Species ◽  
Biosphere Reserve ◽  
Zooplankton Species ◽  
Kuibyshev Reservoir ◽  
Volga River ◽  
Volga River Basin ◽  
Samara Oblast ◽  
Middle Volga

The presented dataset contains information on the distribution and species composition of zooplankton (rotifers and crustaceans) registered in the Basin of the Middle Volga River, Russia. The studies have been performed in the Kuibyshev Reservoir (Samara Oblast and the Republic of Tatarstan), the Saratov Reservoir (Samara Oblast), in several lakes (Raifskoe, Gniloe, Krugloe and Lenevo) in the Volzhsko-Kamsky State Biosphere Reserve (Republic of Tatarstan) and in Lake Aslikul, one of the largest lakes of the Middle Volga River Basin, located in the Asly-Kul Natural Park (Republic of Bashkortostan). The hydrobiological data were obtained and published from 1957 to 2020. In total, the dataset includes 5141 records of 111 zooplankton species (including 17 subspecies), belonging to 45 genera. These are mainly native species - 98.5%, while the naturalised, including invasive species, accounts for less than 1.5%. A total of 5141 records have been published on the taxonomic diversity and occurrence of zooplankton (rotifers and crustaceans) in the Middle Volga River Basin. Each record includes information about the place and date of finding the specimen, its taxonomy, occurrence and abundance and the collector. If the information about the find has been published, a link to the corresponding reference is provided. The presented dataset supplements the data on the distribution of zooplankton species in the European part of Russia. Data on zooplankton in the Middle Volga River Basin are published for the first time.

The main principles and results of pollution monitoring of sediments in the river basin

2020 ◽  
pp. 14-20
Author(s):  
B. Korzhenevsky ◽  
Gleb Tolkachev ◽  
Nikolay Kolomiycev
Keyword(s):  
Heavy Metals ◽  
River Basin ◽  
Water Exchange ◽  
Pollution Monitoring ◽  
Small Rivers ◽  
Volga River ◽  
Natural Landscape ◽  
Volga River Basin ◽  
Ivankovo Reservoir ◽  
Selection Of

The problems of modern geological ecology associated with the study of pollution of sediments of water bodies by heavy metals are considered. The Volga River basin is quite heterogeneous, both in geomorphological and hydrological terms, and in thechnogenical development and usage. A fourrank taxonomy is presented for the selection of sites for monitoring, based on a combination of natural, landscape, climatic and thechnogenical factors. To the largest – the highest taxon – sites of the Ist category – bowls of reservoirs with the slopes and the urban zones, industrial and agricultural structures located within them are carried. Within these areas are allocated to smaller taxa, areas category IInd are the industrial and urban zones, areas category IIIrd are the small rivers without significant contamination and areas category IVth to conduct special observations. The examples of special observations in the study of the annual migration of heavy metals in the system «bottom sediments – water column» on the Ivankovo reservoir are highlighted. The investigations were carried out under the conditions of the standard flow rate for this reservoir and in the conditions of slow water exchange.

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