scholarly journals Genetic diversity of marbled goby populations in the Anatolian coasts of the north-eastern Mediterranean

2021 ◽  
pp. 1-11
Author(s):  
Dilruba Seyhan-Ozturk ◽  
Semih Engin
Keyword(s):  
Gene Flow ◽  
Black Sea ◽  
Genetic Relationships ◽  
Haplotype Diversity ◽  
The Black Sea ◽  
Sea Of Marmara ◽  
Demographic Expansion ◽  
Population Groups ◽  
The North ◽  
North Eastern

Abstract The demographic histories, genetic relationships and population structure of sedentary fish Pomatoschistus marmoratus (Risso, 1810), which was sampled from the north-eastern basin of the Mediterranean Sea (including the Turkish coasts of the Black Sea, Aegean Sea, Levantine Sea and Sea of Marmara), were investigated by mitochondrial cytochrome c oxidase subunit I (652 bp) and cytochrome b (526 bp) regions. It was found that the population groups had high haplotype diversity while the nucleotide diversity was quite low for both gene regions. Phylogeographic analyses of the haplotypes indicated that the Levantine population (LEV) were genetically different from other populations. Also, the gene flow between LEV and the other populations was very limited. The results of the analyses of neutrality and mismatch distributions that were applied to the population groups were evaluated as a whole. It was determined that the haplogroup that represents the Black Sea and Sea of Marmara populations (BLAMAR) was stable, but the Levantine population (LEV) was under the sudden demographic expansion model following the population bottleneck. The genetic variance indices indicated sudden demographic expansion following population contraction. This was supported by star-shaped haplotype networks. The reason for this limited gene flow and differentiation between the Levantine population (LEV) and the others was linked with wind-driven offshore transport of the larvae and surface currents in these sub-basins. The timing of the differentiation, demographic histories of populations associated with geological and palaeo-climatic events and current ecological conditions were discussed.

scholarly journals EXTREME WAVES IN THE NORTH-EASTERN PART OF THE BLACK SEA

2007 ◽  
Vol 3 (1) ◽  
pp. 22-27
Author(s):  
B.V. Divinsky ◽  
◽  
O.V. Pushkarev ◽  
Keyword(s):  
Black Sea ◽  
The Black Sea ◽  
Extreme Waves ◽  
The North ◽  
North Eastern ◽  
North Eastern Part

scholarly journals First record of the Combtooth Blenny, Microlipophrys adriaticus (Steindachner & Kolombatovic, 1883) (Pisces, Blenniidae), for the Italian Ionian Sea

Check List ◽  
2015 ◽  
Vol 11 (3) ◽  
pp. 1646 ◽  
Author(s):  
F. Tiralongo ◽  
R. Baldacconi
Keyword(s):  
Mediterranean Sea ◽  
Black Sea ◽  
Adriatic Sea ◽  
First Record ◽  
The Black Sea ◽  
Ionian Sea ◽  
Sea Of Marmara ◽  
Limited Distribution ◽  
The North ◽  
The Mediterranean

Microlipophrys adriaticus (Steindachner & Kolombatovic, 1883) is an endemic blenny of the Mediterranean Sea. It is also known from the Sea of Marmara and the Black Sea. However, unlike other species of combtooth blennies, M. adriaticus is a fish with a limited distribution in Adriatic Sea, especially in the north, where it can be common. We report here the first record of this species from the waters of the Ionian Sea.

Verruca stroemia and Verruca spengleri (Crustacea: Cirripedia): distribution in the north-eastern Atlantic and the Mediterranean Sea

2003 ◽  
Vol 83 (1) ◽  
pp. 89-93 ◽  
Author(s):  
Paulo S. Young ◽  
Helmut Zibrowius ◽  
Ghazi Bitar
Keyword(s):  
Mediterranean Sea ◽  
Black Sea ◽  
Geographic Distribution ◽  
Deep Water ◽  
Southern Spain ◽  
The Black Sea ◽  
The North ◽  
North Eastern ◽  
The Mediterranean ◽  
Gorringe Bank

The geographic distribution of Verruca stroemia and V. spengleri are reviewed. Verruca stroemia ranges from the White, Barents, Norwegian, and North Seas south to Portugal to the Algarve and to Gorringe Bank. All of the records of this species from the Mediterranean Sea are considered to be V. spengleri. Verruca spengleri occurs in the Azores and Madeira archipelagos, in southern Spain (Cádiz), throughout the Mediterranean Sea from Gibraltar to Lebanon, and in the Black Sea. But a distinct deep-water Verruca species seems to occur in the deep Mediterranean.

scholarly journals Black Sea coastal forecasting system

Ocean Science ◽  
2012 ◽  
Vol 8 (2) ◽  
pp. 183-196 ◽  
Author(s):  
A. I. Kubryakov ◽  
G. K. Korotaev ◽  
V. L. Dorofeev ◽  
Y. B. Ratner ◽  
A. Palazov ◽  
...  
Keyword(s):  
Coastal Zone ◽  
Black Sea ◽  
Ecosystem Model ◽  
The Black Sea ◽  
Western Basin ◽  
The North ◽  
North Eastern ◽  
The Crimea ◽  
Forecasting System ◽  
System Project

Abstract. The Black Sea coastal nowcasting and forecasting system was built within the framework of EU FP6 ECOOP (European COastalshelf sea OPerational observing and forecasting system) project for five regions: the south-western basin along the coasts of Bulgaria and Turkey, the north-western shelf along the Romanian and Ukrainian coasts, coastal zone around of the Crimea peninsula, the north-eastern Russian coastal zone and the coastal zone of Georgia. The system operates in the real-time mode during the ECOOP project and afterwards. The forecasts include temperature, salinity and current velocity fields. Ecosystem model operates in the off-line mode near the Crimea coast.

scholarly journals Fortress of ‘Godlik’ in the system of mediaeval fortifications on the Black Sea coast of Greater Sochi

2020 ◽  
Vol 28 ◽  
pp. 406-421
Author(s):  
Bronislava Ovchinnikova ◽  
Keyword(s):  
Black Sea ◽  
Eastern Coast ◽  
The Black Sea ◽  
State University ◽  
The North ◽  
Field Investigations ◽  
Black Sea Coast ◽  
North Eastern ◽  
A Site ◽  
The City

This article is devoted to results of field investigations at the fortress of ‘Godlik’ conducted by the Loo archaeological expedition of the Ural State University in 1992–1996. This fortress is part of the system of mediaeval defensive installations situated on the north-eastern coast of the Black Sea and is located near the modern urban settle- ment of Lazarevskoye in the city of Sochi. The fortress is a site highly complicated for investigations presenting the ruins of an old fortification where the cultural layer in the court of the fort is practically annihilated.

scholarly journals ZOOPLANKTON OF THE NORTH-EASTERN PART OF THE BLACK SEA OFF THE COAST OF TAMAN IN THE SUMMER-AUTUMN PERIOD 2018–2019

2021 ◽  
Vol 49 (1) ◽  
pp. 26-36
Author(s):  
N.P. Remizova
Keyword(s):  
Black Sea ◽  
Taxonomic Composition ◽  
The Black Sea ◽  
Mnemiopsis Leidyi ◽  
Autumn Period ◽  
The North ◽  
Oithona Davisae ◽  
Invading Species ◽  
North Eastern ◽  
North Eastern Part

The taxonomic composition and quantitative characteristics of zooplankton in the northeastern part of the Black Sea near the Taman coast in the summer-autumn period of 2018–2019 were studied. Zooplankton was represented mainly by eurythermic and thermophilic forms. All the discovered species and taxa are currently typical of the Black Sea, including the invading species: copepods Acartia tonsa, Oithona davisae, and combtails Mnemiopsis leidyi, Beroe ovata. The average number of zooplankton in 2018 ranged from 2.7–15.9 thousand copies/m3, the biomass – 0.02–0.14 g/m3; its indicators in 2019; they were lower, respectively, 2.0–5.6 thousand copies/m3 and 0.02–0.07 g/m3. These indicators were within the values recorded earlier, in 2013–2014. A significant part of the coastal zooplankton is meroplankton, which accounted for 5–69% of the population and 4–47% its biomass. O. davisae dominated amoung copepods. This speciest was leading in numbers in both years except June 2019. Despite the similarity of the taxonomic composition of zooplankton, the dominant species in terms of biomass differed by month in two years.

THE CURRENT STATE OF THE BLACK SEA COASTAL GEOSYSTEMS IN THE NORTH-EASTERN SECTOR

2017 ◽  
Author(s):  
Eugeny Godin ◽  
Eugeny Godin ◽  
Yury Goryachkin ◽  
Yury Goryachkin ◽  
Vyacheslav Dolotov ◽  
...  
Keyword(s):  
Observational Data ◽  
Coastal Zone ◽  
Black Sea ◽  
The State ◽  
The Black Sea ◽  
Integrated Analysis ◽  
Eastern Sector ◽  
The North ◽  
Current State ◽  
North Eastern

This work is a multi-disciplinary research aimed to develop common approaches to estimating the current state and forecasting evolution of coastal geosystems. From 2010 to now, the state of coastal zone geosystems of the Crimean and Caucasian Russian coast has been studied. The research tasks are solved using up-to-date IT based integrated analysis of historical and new observational data.

LONG-TERM MONITORING OF SEASONAL AND INTERANNUAL VARIABILITY OF HYDROLOGICAL STRUCTURE IN COASTAL ZONE OF THE NORTH-EASTERN BLACK SEA

2017 ◽  
Author(s):  
O. Podymov ◽  
O. Podymov ◽  
N. Kuzevanova ◽  
N. Kuzevanova ◽  
A. Khvorosch ◽  
...  
Keyword(s):  
Coastal Zone ◽  
Black Sea ◽  
Hydrogen Sulphide ◽  
Sea Water ◽  
The Black Sea ◽  
Homogeneous Layer ◽  
Marmara Sea ◽  
The North ◽  
North Eastern ◽  
North Eastern Part

The work demonstrates the results of the 6-years complex ship-borne monitoring of coastal zone in the north-eastern part of the Black Sea, carried out by the Southern Branch of P.P.Shirshov Institute of Oceanology, RAS, on a marine cross-section at the Blue Bay (Gelendzhik) beam 1-2 times per month. Climatic changes and eutrophication exert a significant impact on the sea water at the coastal area. In case of the Black Sea these factors pile up with a permanent hydrogen sulphide contamination of the sea water below 80-200 meters depth (depending on the season and distance from the shore). Strong pycno-halocline at the depths from 70 to 160 meters, formed due to the inflow of high salinity water from the Marmara Sea, inhibits the mixing between the water layers and, as a result, also limits the oxygen transport into the deeper layers. The winter cooling reduces the pycno-halocline and enriches the top active layer, down to the cold intermediate layer (CIL), with oxygen and nutrients, which subsequently lead to a vernal phytoplankton bloom. Formation of the thermocline and upper quasi-homogeneous layer (UQL), caused by the water warming in spring, at large extent determines a thickness of phytoplankton-rich layer during the spring and summer seasons. The work demonstrates seasonal and interannual dynamics of the UQL, thermocline, CIL and hydrogen sulphide boundary position in the coastal zone of the north-eastern part of the Black Sea.

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