Floristic Composition and Taxonomic Structure of Algae in the Hyperhaline Reservoirs of the Northwestern Azov Sea Coast (Ukraine)

2020 ◽  
Vol 22 (4) ◽  
pp. 373-382
Author(s):  
A. M. Solonenko ◽  
O. G. Bren
Keyword(s):  
Floristic Composition ◽  
Taxonomic Structure ◽  
Azov Sea ◽  
Sea Coast

scholarly journals Floristic composition and taxonomic structure of algae in the hyperhaline reservoirs of the northwestern Azov Sea coast (Ukraine)

Algologia ◽  
2020 ◽  
Vol 30 (4) ◽  
pp. 393-405
Author(s):  
A.M. Solonenko ◽  
◽  
O.G. Bren ◽  
Keyword(s):  
Water Exchange ◽  
Salt Water ◽  
Floristic Composition ◽  
Hydrological Regime ◽  
Taxonomic Structure ◽  
Azov Sea ◽  
The Family ◽  
Saline Habitats ◽  
Saline Land

The article represents the results of long-term algological studies of hyperhaline reservoirs of the northwestern coast of the Azov Sea. The features of the floristic composition and taxonomic structure of algae in aquatic (water column and bottom), aquatic-terrestrial (water’s edge, dried up water bodies, drying area) and terrestrial (elevated non-flooding areas) habitats of these objects are displayed. A specificity of the studied algoflora lies in the absence of representatives of certain characteristic phyla for the salt-water and non-saline land and water habitats of the territory of Ukraine. It was established that species composition of the studied reservoirs is depleted in comparison with other non-saline and marine ecosystems. Totally, 123 algae species were identified. They represente 7 phyla, 10 classes, 27 orders, 47 families, 68 genera. The largest number of species included three phyla: Cyanoprocaryota – 65 species (52.9% of the total number of identified species), Bacillariophyta – 26 (21.1%), Chlorophyta – 22 (17.9%). The first places among the six leading orders were taken by cyanoprocaryotes from Oscillatoriales, Nostocales, Chroococcales and diatoms from Naviculales. The most numerous species at the family level are trichomous cyanoprocaryotes from Nostocaceae, Pseudanabaenaceae, and Phormidiaceae. There were found 23 leading genera – their species richness exceeds the average indicator (1.81 species). According to the results of original studies, it was noted that all taxonomic levels of algoflora of the hyperhaline reservoirs shows features of not only saline habitats, but also of the freshwater, marine and terrestrial extreme ecosystems. Such diversity of the algal population indicates an unstable hydrological regime and complex relations of water exchange between the hyperhaline reservoirs and nearby terrestrial and aquatic habitats.

MODERN ABRASION PROCESSES OF THE AZOV SEA COAST

2017 ◽  
Author(s):  
Lyudmila Bespalova ◽  
Lyudmila Bespalova ◽  
Olga Ivlieva ◽  
Olga Ivlieva ◽  
Alla Tsygankova ◽  
...  
Keyword(s):  
Storm Surges ◽  
Anthropogenic Factors ◽  
Geological Processes ◽  
Azov Sea ◽  
Natural And Anthropogenic Factors ◽  
Sea Coast

The Azov Sea Coast is subjected to a complex of hazardous exogenous geological processes, landslides and abrasion being the most important ones. Both natural and anthropogenic factors contribute to the development and intensification of these processes. These processes are currently growing due to an increased frequency of storm surges.

scholarly journals Species composition of algae small rivers of the North-Western Black Sea region

Algologia ◽  
2020 ◽  
Vol 30 (4) ◽  
pp. 406-420
Author(s):  
O.M. Mironyuk ◽  
◽  
F.P. Tkachenko ◽  
Keyword(s):  
Black Sea ◽  
Rare Species ◽  
Floristic Composition ◽  
Hydrological Regime ◽  
Small Rivers ◽  
Taxonomic Structure ◽  
Black Sea Region ◽  
The North ◽  
Short Period ◽  
North Western

The article presents the results of research on the species diversity of algae of small steppe rivers of the north-western Black Sea coast (NWBS). These are the rivers of Kohylnyk, Chaha, Sarata, Hadjider, Kuchurhan, Yahorlyk, Baraboy, Veliky Kuyalnik, Maly Kuyalnik, Kodyma, Tylihul, Tsarehol, Chichikleya. A total of 329 species (340 infraspecific taxa) of algae belonging to 8 divisions (Bacillariophyta, Cyanobacteria, Chlorophyta, Euglenozoa, Ochrophyta, Charophyta, Dinophyta and Rhodophyta) were identified. The basis of the taxonomic structure of reservoirs are representatives of Bacillariophyta (40%), Cyanobacteria and Chlorophyta (17% each), Charophyta (10.5%), Euglenozoa (10.2%). The total share of other departments is 4.1%. The Tylihul River had the most diverse composition of algae. It is one of the largest small rivers in the region, which dries up every year for a short period. According to the Sørensen-Chekanovsky coefficient, the greatest degree of similarity of the floristic composition of algae was established by pairwise comparison of the rivers of Sarata–Kohylnyk (0.614), Sarata–Hadjider (0.544), and Kohylnyk–Hadjider (0.517). These reservoirs are located in the Danube–Dniester interfluve, have almost the same mineralization and a similar hydrological regime. Among the identified algae species, only 12 are common to all studied rivers. New records for the NWBS were Peranema pleururum Skuja, Phacus platyaulax Pochmann, Monomorphina pyrum (Ehrenberg) Mereschkowsky and Euglena van-goori Deflandre. A rare species Spirulina flavovirens Wisl. was found in in the Kohylnyk River. Anabaena bergii Ostenfeld, Phacus alatus G.A.Klebs, Monomorphina pyrum, Pleurosira laevis (Ehrenberg) Compère, Campylodiscus bicostatus Smith ex Roper, Closterium dianae Ehrenb. ex Ralfs and Batrachospermum gelatinosum (Linnaeus) De Candolle are regionally rare species. In the ecological aspect, the waters of the studied small rivers can be characterized as brackish, poorly flowing, and alkaline. According to the level of organic pollution, they correspond to the β-mesosaprobic zone.

New data on host plant range and harmfulness of the brown marmorated stink bug, Halyomorpha halys (Stål, 1855), under conditions of the urban ecosystem on the Azov Sea Coast

2021 ◽  
Author(s):  
I.M. Mityushev ◽  
Keyword(s):  
Host Plant ◽  
Urban Ecosystem ◽  
Halyomorpha Halys ◽  
Brown Marmorated Stink Bug ◽  
Stink Bug ◽  
Krasnodar Krai ◽  
Host Plant Range ◽  
Azov Sea ◽  
Sea Coast

This paper deals with the results of study on host plant range and associated harmfulness of the brown marmorated stink bug, Halyomorpha halys, under conditions of Yeysk, the northernmost city of Krasnodar Krai.

Descriptions of new associations and subassociations with limited alteration of floristic composition

2012 ◽  
pp. 124-134
Author(s):  
V. B. Golub ◽  
A. N. Sorokin ◽  
N. A. Grechushkina
Keyword(s):  
Plant Communities ◽  
Floristic Composition ◽  
New Associations ◽  
Azov Sea ◽  
Halophytic Plant

Halophytic plant communities of the Russian coast of the Azov Sea are described. It is proposed to limit variation in the floristic composition of the syntaxa by logical formulas based on the “Cocktail” method. Four new associations and two subassociations of the class Juncetea maritimi Br.-Bl. in Br.-Bl. et al. 1952 are distinguished.

scholarly journals Paradynamic landscape system of the azov sea region as a form of landscape space organization

2016 ◽  
pp. 30-35
Author(s):  
V. Vorovka
Keyword(s):  
Coastal Zone ◽  
Integrated Management ◽  
Detailed Knowledge ◽  
Use Of Resources ◽  
Azov Sea ◽  
Sea Bottom ◽  
Space Organization ◽  
Landscape System ◽  
And Migration ◽  
Sea Coast

One of the forms of landscape space organization, a paradynamic landscape system, is considered by the example of the Azov Sea coast. It is based on the idea of the existence of a specific type of landscape systems formed on the border of contrast environments. In this case – on the border of land and water (coastal zone), in other cases – on the border between mountains and plains, highlands and lowlands, forest and deforested landscapes, etc. The existence of such systems is grounded on the functional principle and strength of contrast-based interrelations. As opposed to the traditional landscape science, paradynamic systems are formed on the basis of interacting types of environments, distinct in their properties. In the study area, they are represented by the patches of land and sea bottom adjacent to the shoreline. The functioning of such a system depends not only on the interactions between natural but also on those between man-made landscapes of adjacent land and marine areas and their various modifications. The publication describes the rationale for distinguishing the borders of the paradynamic landscape system. Such a border between land and sea bottom is represented by the line, to which extends the land impact on the sea and that of the marine environment on the coastal land. For the Ukrainian part of the Azov Sea coast these borders are distinguished as follows: on land it is a line of the watershed and climatic influence of the sea, in marine waters it is an isobath, to which extends the effect of waves on the treatment and redeposition of sediments. The structure shaping links in the Azov Sea paradynamic landscape system are defined. The main land impacts on the sea are referred to the river runoff, coastal processes, and human activities. The sea effects on the land are classified as the climate impact, breeze circulation, and migration of living organisms. Specific examples of various links in the system are given. An essential role in the functioning of these systems is played by human actions, which primarily manifests themselves in such coastal activities as fishing, marine transport, recreation and tourism, aquaculture. For the effective management of the shoreline, the borders of paradynamic coastal systems and their system-forming factors should be taken into consideration. A detailed knowledge of the functioning of the Azov paradynamic landscape system is the basis for the integrated management of the coastal zone of the Sea of Azov. The latter, in addition to economic and social matters, requires a deep understanding of specific properties of the coastal environment. We cannot apply here a unified approach, since each coastal zone is characterized by its own unique conditions of the formation, development, and its own resource base thus requiring individual solutions and approaches to its integrated management. Basing on the long-term scientific data, this will enable the implementation of a comprehensive, well-planned and sustainable use of resources, functions and services of coastal zones. As a result, the maximum environmental and socio-economic efficiency of using the area can be reached. The knowledge of the intensity of coastal erosion and accumulation, characteristics of wind and hydrological regimes, characteristics of pollution and migration of contaminants etc. will assist in making adequate management decisions and preventing many unexpected problems in the future.

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