scholarly journals ANNUAL VEGETATION ALONG THE BLACK SEA SHORELINE WITHIN THE DANUBE DELTA BIOSPHERE RESERVE

2011 ◽  
Author(s):  
Marius Fagaras
Keyword(s):  
Black Sea ◽  
Biosphere Reserve ◽  
The Black Sea ◽  
Danube Delta ◽  
Danube Delta Biosphere Reserve

scholarly journals Danube Delta - a unique place in Europe

2020 ◽  
Vol 10 (1) ◽  
pp. 09-16
Author(s):  
Slave Camelia
Keyword(s):  
Biosphere Reserve ◽  
World Heritage Site ◽  
The Black Sea ◽  
Danube Delta ◽  
Gis Technology ◽  
Natural Heritage ◽  
Heritage Site ◽  
Slope Wetlands ◽  
The World ◽  
Danube Delta Biosphere Reserve

At the end of a flowing route that exceeds 2,860 km, through an impressive catchment area that covers more than 80% of Europe, the Danube, the second largest river in Europe, intersects the Black Sea forming the delta which is known as one of the great wetlands of the planet. The stretches of water and land formed here offer good living conditions to many species of plants and animals. The purpose of this study was to create several maps that present these aspects of the Danube Delta wetland using a set of GIS technologies. Since the GIS technology is an important tool in the analysis of geographic areas, we managed to obtain the following maps: hypsometric, slope, slope orientation and flood direction. Since September 1990, the Danube Delta Biosphere Reserve has been recognised internationally as a wetland; specifically, the Danube Delta Biosphere Reserve has been recognised internationally as a wetland, especially for water birds habitat. The value of the World Heritage Site of the Danube Delta Biosphere Reserve was recognised in December 1990 by including more than half of its surface into the World Cultural and Natural Heritage List.   Keywords: Danube Delta, flood accumulation, natural heritage, slope, wetlands.

scholarly journals Danube Delta: Water Management on the Sulina Channel in the Frame of Environmental Sustainability

2021 ◽  
Author(s):  
Igor Cretescu ◽  
Zsofia Kovacs ◽  
Liliana Lazar ◽  
Adrian Burada ◽  
Madalina Sbarcea ◽  
...  
Keyword(s):  
Black Sea ◽  
Environmental Sustainability ◽  
Treatment Plant ◽  
Seasonal Fluctuation ◽  
Biosphere Reserve ◽  
Danube River ◽  
The Black Sea ◽  
Danube Delta ◽  
Limit Value ◽  
Two Factors

The Danube Delta is the newest land formed by both transporting sediments brought by Danube River, which flows into the Black Sea and by traversing an inland region where water spreads and deposits sediments. Diurnal tidal action is low (only 8–9 cm), therefore the sediments would wash out into the water body faster than the river deposits it. However, a seasonal fluctuation of water level of 20 cm was observed in the Black Sea, contributing to alluvial landscape evolution in the Danube Delta. The Danube Delta is a very low flat plain, lying 0.52 m above Mean Black Sea Level with a general gradient of 0.006 m/km and only 20% of the delta area is below zero level. The main control on deposition, which is a combination of river, wind-generated waves, and tidal processes, depends on the strength of each one. The other two factors that play a major role are landscape position and the grain size distribution of the source sediment entering the delta from the river. The Danube Delta is a natural protected area in the South-Eastern part of Romania, declared a Biosphere Reserve through the UNESCO “Man and Biosphere” Programme. Water is a determining factor for all the human settlements in the Biosphere Reserve, the whole Danube Delta being structured by the three branches of the Danube (Chilia, Sulina and Sfantu Gheorghe (Saint George)). Our case study is focused on the Sulina branch, also named Sulina Channel, which offers the shortest distance between the Black Sea (trough Sulina Port) and Tulcea (the most important city of the Danube Delta from economic, social and cultural points of view) for both fluvial and marine ships. The improvement of water resources management is the main topic of this chapter, in terms of water quality indicators, which will be presented in twenty-nine monitoring points, starting since a few years ago and updated to nowadays. During the study period, significant exceedances of the limit value were detected in case of nitrate-N (3.9–4.6 mg/L) at the confluence (CEATAL 2) with the Saint George branch and in the Sulina Channel after the Wastewaters Treatment Plant (WWTP) discharge area, as well as near two settlements, namely Gorgova and Maliuc. The higher concentrations of Nitrogen-based nutrients were caused by the leakage from the old sewage systems (where these exist) and the diffuse loads.

Alien species in the fauna of the Black Sea (Chornomorskyi) Biosphere Reserve

Geo&Bio ◽  
2019 ◽  
Vol 2019 (17) ◽  
pp. 48-61
Author(s):  
Dariya Korolesova ◽  
◽  
Yurii Moskalenko ◽  
Maria Nitochko ◽  
Zoya Selyunina ◽  
...  
Keyword(s):  
Alien Species ◽  
Black Sea ◽  
Biosphere Reserve ◽  
The Black Sea

Danube Delta Biosphere Reserve—Long-Term Assessment of Water Quality

2019 ◽  
pp. 21-43
Author(s):  
Cristina Despina ◽  
Liliana Teodorof ◽  
Adrian Burada ◽  
Daniela Seceleanu-Odor ◽  
Iuliana-Mihaela Tudor ◽  
...  
Keyword(s):  
Water Quality ◽  
Biosphere Reserve ◽  
Danube Delta ◽  
Danube Delta Biosphere Reserve

scholarly journals Algae of biological soil crusts from sand dunes of the Danube Delta biosphere reserve (Odesa Region, Ukraine)

Algologia ◽  
2021 ◽  
Vol 31 (1) ◽  
pp. 25-62
Author(s):  
T.I. Mikhailyuk ◽  
◽  
O.M. Vinogradova ◽  
K. Glaser ◽  
N. Rybalka ◽  
...  
Keyword(s):  
Species Composition ◽  
Phylogenetic Analyses ◽  
Sand Dunes ◽  
Biosphere Reserve ◽  
Biological Soil Crusts ◽  
Danube Delta ◽  
Climate Type ◽  
Soil Crusts ◽  
Comparison Of The Results ◽  
Danube Delta Biosphere Reserve

The species composition of algae from biological soil crusts (biocrusts) on the surface of sand dunes (Black Sea coast, Primorske, Izmail District, Odesa Region, Ukraine) was investigated. Samples were collected from three coastal localities: Katranivska Spit, Zhebryianska Bay and Zhebryianska Ridge. The latter two localities are in the territory of the Danube Delta Biosphere Reserve. The samples were investigated by direct microscopy, followed by a culture approach. 60 species from Chlorophyta (32), Cyanobacteria (16), Streptophyta (7) and Ochrophyta (5) were identified. Representatives of the cyanobacterial genera Microcoleus Desmazières ex Gomont, Coleofasciculus M.Siegesmund, J.R.Johansen & T.Friedl, Nostoc Vaucher ex Bornet & Flahault, Hassallia Berkeley ex Bornet & Flahault, and streptophytes from the genus Klebsormidium P.C.Silva, Mattox & W.H.Blackwell dominated in the studied biocrusts. Phylogenetic analyses based on 16S/18S rRNA as well as 16S-23S ITS/ITS-1,2 regions were undertaken for some strains of cyanobacteria and eukaryotic algae. As a result, species identification and their position in respective phylogeny was refined, as well as aiding the discovery of some interesting and rare species. New genera and species were described (Streptosarcina arenaria Mikhailyuk & Lukešová and Tetradesmus arenicola Mikhailyuk & P.Tsarenko); with two genera (Nodosilinea R.B.Perkerson & D.A.Casamatta and Pleurastrosarcina H.J.Sluiman & P.C.J.Blommers) and four species reported for the first time for the flora of Ukraine (Nodosilinea epilithica Perkerson & Casamatta, Pseudomuriella aurantiaca (W.Vischer) N.Hanagata, Pleurochloris meiringensis Vischer, Pleurastrosarcina terriformae Darienko, W.J.Kang, Orzechowski & Pröschold). Comparison of the results from this study with similar investigations at Cape Kazantip (Sea of Azov, Ukraine) and at two islands of the Baltic Sea (Rügen, Usedom, Germany) revealed that sand composition and texture, as well as climate type of the respective region, are the main factors determining species composition of algae and cyanobacteria in biocrusts of maritime dunes.

scholarly journals The Black Sea Trout, Salmo labrax Pallas, 1814 (Pisces: Salmonidae) in Romanian Waters

2020 ◽  
Vol 77 (2) ◽  
pp. 9
Author(s):  
Călin LAȚIU ◽  
Daniel COCAN ◽  
Paul UIUIU ◽  
Andrada IHUȚ ◽  
Sabin Alexandru NICULA ◽  
...  
Keyword(s):  
Black Sea ◽  
The Black Sea ◽  
Danube Delta ◽  
Meristic Characters ◽  
Sea Trout ◽  
Research Fields ◽  
New Information ◽  
Rivers And Lakes ◽  
Recorded Data ◽  
New Hypothesis

The review assembles chronological data on Black Sea trout (Salmo labrax) from Romanian waters and brings up-to-date information related to the distribution of the species. The information used dates from 1909 to 2020 and includes books, articles, digital databases, field observations, and notes from different research fields such as ichthyology, biogeography, genetics, aquaculture, conservation, and ecology. Global distribution, migration, meristic characters, and aquaculture of the species were analyzed based on the recorded data from the specialty literature. New information related to a possible population of Salmo labrax inside the Carpathian Arch was discussed. In Romanian waters the species is found in the Black Sea, Danube, Danube Delta but the current paper proposes a new hypothesis, namely that resident populations can be found in rivers and lakes adjacent to the Carpathian Arch. The highest migration point of the Black Sea trout in the Danube was recorded near Corabia locality, Olt County, (43°46′25″N- 24°30′12″E). In the Danube Delta, it was caught in all the three branches (Sulina, Sf. Gheorghe and Chilia), and lagoonary complexes such as Razim-Sinoe. Sexually matured females were caught especially in Spring Season while unmatured specimens were caught in all seasons. Even if the species is protected under Romanian legislation, fishermen and anglers should report its presence when caught accidentally.

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