scholarly journals The Sura River Basin Water Bodies’ Fractal Parameters

2018 ◽  
Author(s):  
Keyword(s):  
River Basin ◽  
Traditional Approach ◽  
Fractal Dimensionality ◽  
Shape Index ◽  
Water Area ◽  
River Network ◽  
Water Bodies ◽  
Box Counting ◽  
Basin Water ◽  
First Time

The Sura river basin water bodies (a river network with 800 watercourses and he Penza reservoir, the biggest on this territory with about 100 km2 water area) have been studied from the fractal geometry positions. The Sura River basin river network is characterized by Huck hydrological law. For the first time we present the methods of the river network fractal dimensionality determination with the use of Horton law and state the traditional approach with the use of the divider method. We have calculated fractal dimensionality of the Sura River basin river network by the both methods and have compared the results. As for the Penza Reservoir filled in 1979, we accurately hydrographically studied the banks, bottom and morphometric parameters as current in 2005. We give the method of box-counting, for the first time with its help we have calculated the reservoir bank lime fractal dimensionality. By the shape index, we have characterized the map layout of the Penza Reservoir and defined its place in the developed reservoirs’ classification according their map configuration complexity. This work material is meant as a supplement to the Scheme of the Sura River basin water bodies’ integrated use and protection.

Identification of sibling species in the genus Eucyclops from water-bodies of Ukraine and Russia using crossbreeding studies

2014 ◽  
Vol 25 (1-2) ◽  
pp. 61-68 ◽  
Author(s):  
V. I. Monchenko ◽  
L. P. Gaponova ◽  
V. R. Alekseev
Keyword(s):  
Cryptic Species ◽  
River Basin ◽  
Black Sea ◽  
Species Complex ◽  
River Basins ◽  
Water Bodies ◽  
Similar Species ◽  
Basin Water ◽  
Different Populations ◽  
Baltic Sea Basin

Crossbreeding experiments were used to estimate cryptic species in water bodies of Ukraine and Russia because the most useful criterion in species independence is reproductive isolation. The problem of cryptic species in the genus Eucyclops was examined using interpopulation crosses of populations collected from Baltic Sea basin (pond of Strelka river basin) and Black Sea basin (water-reservoires of Dnieper, Dniester and Danube rivers basins). The results of reciprocal crosses in Eucyclops serrulatus-group are shown that E. serrulatus from different populations but from water bodies belonging to the same river basin crossed each others successfully. The interpopulation crosses of E. serrulatus populations collected from different river basins (Dnipro, Danube and Dniester river basins) were sterile. In this group of experiments we assigned evidence of sterility to four categories: 1) incomplete copulation or absence of copulation; 2) nonviable eggs; 3) absence of egg membranes or egg sacs 4) empty egg membranes. These crossbreeding studies suggest the presence of cryptic species in the E. serrulatus inhabiting ecologically different populations in many parts of its range. The same crossbreeding experiments were carries out between Eucyclops serrulatus and morphological similar species – Eucyclops macruroides from Baltic and Black Sea basins. The reciprocal crossings between these two species were sterile. Thus taxonomic heterogeneity among species of genus Eucyclops lower in E. macruroides than in E. serrulatus. The interpopulation crosses of E. macruroides populations collected from distant part of range were fertile. These crossbreeding studies suggest that E. macruroides species complex was evaluated as more stable than E. serrulatus species complex.

scholarly journals First record of the invasive snail Melanoides tuberculatus (Gastropoda: Prosobranchia: Thiaridae) in the Paranã River basin, GO, Brazil

2006 ◽  
Vol 66 (4) ◽  
pp. 1109-1115 ◽  
Author(s):  
F. Rocha-Miranda ◽  
M. J. Martins-Silva
Keyword(s):  
East Africa ◽  
River Basin ◽  
Thermal Water ◽  
First Record ◽  
Paraná River ◽  
Water Bodies ◽  
Parana River ◽  
First Time ◽  
Paraná River Basin

The Thiarid snail Melanoides tuberculatus (Müller, 1774), native to Asia and East Africa was recorded for the first time in the Paranã River basin, Goiás State. There is no evidence concerning introduction vectors but aquarium releases is the most probable vector. Specimens were collected at three different water bodies after twenty-seven rivers were investigated. The possible spread of this species to other habitats and potential effects on native thermal water communities are discussed.

New records of centric diatoms from Yakutia (Bolshoe Toko Lake): SEM morphology, ecology and distribution

2018 ◽  
Vol 52 (2) ◽  
pp. 245-252 ◽  
Author(s):  
S. I. Genkal ◽  
V. A. Gabyshev
Keyword(s):  
Species Composition ◽  
River Basin ◽  
New Records ◽  
Water Bodies ◽  
Centric Diatom ◽  
Diatom Species ◽  
Centric Diatoms ◽  
Sem Study ◽  
First Time ◽  
Sem Morphology

As a result of a SEM study of phytoplankton, the first data on centric diatom species composition in Bolshoye Toko Lake, Yakutia, were obtained. Ten species (Aulacoseira — 5, Cyclotella — 1, Discostella — 1, Handmannia — 1, Pliocaenicus — 1) were found, and one taxon from the genus Pliocaenicus was identified to the genus level. Of these, nine taxa are reported for the first time in the water bodies of the Aldan River basin and Discostella guslyakovyi in Yakutia.

scholarly journals Assessment of Ecological Conditions and Key Water/economic Problems of the Amur River Basin Russian Part

2014 ◽  
pp. 48-60
Author(s):  
Keyword(s):  
River Basin ◽  
Water Bodies ◽  
Amur River Basin ◽  
Amur River ◽  
Economic Problems ◽  
Ecological Conditions ◽  
Russian Part ◽  
The Amur River ◽  
Basin Water

General assessment of the Amur River basin water bodies’ ecological conditions has been presented; relevant key problems and objectives within the framework of Schemes of Water Bodies Integrated Use and Protection have been demonstrated.

scholarly journals Fish occurrence in the Kuban River Basin (Russia)

2021 ◽  
Vol 9 ◽  
Author(s):  
Oleg Artaev ◽  
Andrey Pashkov ◽  
Dmitriy Vekhov ◽  
Maksim Saprykin ◽  
Maksim Shapovalov ◽  
...  
Keyword(s):  
River Basin ◽  
Fish Fauna ◽  
Water Bodies ◽  
Northern Caucasus ◽  
Kuban River ◽  
First Time

This publication describes a dataset containing information on 1328 occurrences of fishes in the Kuban River Basin, the longest river of Northern Caucasus and representing its own freshwater ecoregion (428 Kuban Ecoregion). All observations have precise geo-referencing with the names of water bodies (rivers, lakes etc.). The dataset is based on both literature data (509 occurrences) and our own sampling (814 occurrences). Observations were carried out between 1889 and 2020. The majority (> 61%) of occurrences in the presented data are published for the first time. This extended dataset contributes significantly to fish fauna survey in the Kuban River ecoregion.

scholarly journals Calculation of the River Network of Flooded Areas with a Univariate Model upon Water Posts Maximal Levels According to the Sura River SKIOVO (Scheme of Water Bodies Integrated Use and Protection) Experience

2010 ◽  
Author(s):  
Keyword(s):  
River Basin ◽  
Hydrodynamic Model ◽  
River Network ◽  
Water Levels ◽  
Water Bodies ◽  
Topographic Maps ◽  
Braided River ◽  
Gis Technologies ◽  
Flooded Area ◽  
Flooded Areas

A method of the flooded area calculation with an invariate model of a braided river network upon maximal water levels of different expected probability known for water-measuring stations has been presented. This method application has been demonstrated in conjunction with implementation of the “Scheme of water bodies integrated use and protection” for the Sura River basin with the use of GIS-technologies and digital topographic maps of 1:100 000 scale for derivation of the relief model and the river basin network hydrodynamic model, for identification of flooded zones and protected areas on the territory of the basin.

New records of Ephemeroptera from the Colombian Orinoco river basin of the Meta department

2017 ◽  
Vol 43 (2) ◽  
pp. 271
Author(s):  
Luis Gonzalo Salinas-Jiménez ◽  
José Ismael Rojas-Peña ◽  
Diana Paola Osorio-Ramírez ◽  
Clara Inés Caro-Caro
Keyword(s):  
River Basin ◽  
New Records ◽  
Andean Region ◽  
Orinoco River ◽  
First Time

There is extensive research of the Ephemeroptera communities taxonomy and ecology in the Andean region of Colombia. However, other regions such as the Orinoquia have been insufficiently studied. From this region, in the Meta department, four species have been registered: Varipes lasiobrachius Lugo-Ortiz & McCafferty, Coryphorus aquilus Peters, Miroculis (Atroari) colombiensis Savage & Peters and Tricorythopsis rondoniensis (Dias, Cruz & Ferreira). The main objective of this study is to report for the first time for this region the species: Mayobaetis ellenae (Mayo), Hydrosmylodon primanus (Eaton), Haplohyphes baritu Domínguez, Camelobaetidus edmundsi Dominique, Mathuriau & Thomas and Nanomis galera Lugo-Ortiz & McCafferty.

To the flora of сonjugates (Streptophyta, Conjugatophyceae) of the Valdai District area of the National Park «Valdaiskiy» (Novgorod Region, Russia)

2014 ◽  
Vol 48 ◽  
pp. 81-88
Author(s):  
A. F. Luknitskaya
Keyword(s):  
Species Distribution ◽  
National Park ◽  
Species Abundance ◽  
Water Bodies ◽  
Number Of Species ◽  
First Time

76 species, 3 varieties and 1 form from 21 genera of Streptophyta, Conjugatophyceae (Actinotaenium, Bambusina, Closterium, Cosmarium, Cylindrocystis, Euastrum, Gonatozygon, Haplotaenium, Micrasterias, Mougeotia, Netrium, Penium, Planotaenium, Pleurotaenium, Raphidiastrum, Spirogyra, Spirotaenia, Staurastrum, Staurodesmus, Tetmemorus, Xanthidium) were found in the basins of the Valdai District area of the National Park «Valdaiskiy» (Novgorod Region, Russia). The list of species is annotated with data on the species distribution in 55 collecting sites of 29 water bodies of the national park, and species abundance in collected samples according to Luknitskaya (2009). Among above mentioned genera, the genus Cosmarium is represented by the greatest number of species (20). Staurastrum chaetoceros has been found for the first time for the Novgorod Region.

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