Assessment of the Influence of the Mussel Farm on Hydrochemical Conditions of the Region of Its Functioning (Sevastopol Bay, the Black Sea)

2009 ◽  
Vol 45 (3) ◽  
pp. 101-110
Author(s):  
Ye. A. Kuftarkova ◽  
A. A. Subbotin ◽  
N. Yu. Rodionova
Keyword(s):  
Black Sea ◽  
The Black Sea ◽  
Sevastopol Bay ◽  
Hydrochemical Conditions ◽  
Mussel Farm

Oithona davisae: naturalization in the Black sea, inter-annual and seasonal dynamics, effect on the structure of the planktonic copepod community

2019 ◽  
Vol 59 (6) ◽  
pp. 1008-1015
Author(s):  
A. D. Gubanova ◽  
O. A. Garbazey ◽  
D. A. Altukhov ◽  
V. S. Mukhanov ◽  
E. V. Popova
Keyword(s):  
Black Sea ◽  
Coastal Waters ◽  
Native Species ◽  
Significant Decline ◽  
Acartia Tonsa ◽  
The Black Sea ◽  
Copepod Community ◽  
Oithona Davisae ◽  
Sevastopol Bay

Long-term (20032014) routine observations of zooplankton in Sevastopol Bay (the Black Sea) have allowed the naturalization of the invasive copepod Oithona davisae to be studied in the Black Sea coastal waters. Inter-annual and seasonal variability of the species and their impact on the native copepod community have been analyzed. The invasion of O. davisae and their undoubted dominance in terms of abundance were shown to alter the community structure but, at the same time, the abundances of the native species did not decrease, excepting the Black Sea earlier invader Acartia tonsa. A significant decline in A. tonsa numbers over the stages of O. davisae establishment and naturalization provided evidence of competition between the species. O. davisae have been demonstrated to gain competitive advantage over A. tonsa, that ensured their fast dispersal in the Black Sea, acclimatization in the new habitat and the successful competition over native species.

Long-term Changes in Sevastopol Bay (the Black Sea) with Particular Reference to the Ichthyoplankton and Zooplankton

2001 ◽  
Vol 52 (1) ◽  
pp. 1-13 ◽  
Author(s):  
A.D. Gordina ◽  
E.V. Pavlova ◽  
E.I. Ovsyany ◽  
J.G. Wilson ◽  
R.B. Kemp ◽  
...  
Keyword(s):  
Black Sea ◽  
The Black Sea ◽  
Sevastopol Bay ◽  
Long Term Changes

scholarly journals FUNCTIONAL STATE OF THE MARINE MICROALGAE CULTURES AS AN INDICATOR OF THE WATER POLLUTION LEVEL OF THE SEVASTOPOL BAY

2021 ◽  
pp. 83-90
Author(s):  
L.V. Stelmakh ◽  
◽  
I.M. Mansurova ◽  
Keyword(s):  
Functional State ◽  
Black Sea ◽  
Phaeodactylum Tricornutum ◽  
Inhibitory Effect ◽  
The Black Sea ◽  
Pollution Level ◽  
Sevastopol Bay ◽  
Algae Growth ◽  
Taxonomic Affiliation

The possibility of using cultures of Black Sea planktonic microalgae of different taxonomic affiliation to assess the quality of the aquatic environment based on the assessment of their functional state is shown. The research was carried out on the diatom Phaeodactylum tricornutum, three dinoflagellates species Prorocentrum cordatum, Prorocentrum pusillum and Gyrodinium fissum, as well as the coccolithopho-ride Emiliania huxleyi. It was found that the waters of the Sevastopol Bay in the period from May to August 2021 in 50% of cases had a weak inhibitory effect on the growth of the tested species. In other cases, algae growth was either stimulated or the effect of pollution on cultures was not revealed. The need for using several types of algae in carrying out complex work on water biotesting of the coastal are-as of the Black Sea is highlighted.

scholarly journals Peculiarities of Macro- and Microelement Accumulation in Bottom Sediments of the Crimean Coastal Water Areas (the Black Sea) with Different Water Exchange Intensity based on XRF Data

2021 ◽  
Author(s):  
E. A. Kotelyanets ◽  
Keyword(s):  
Black Sea ◽  
Bottom Sediments ◽  
Water Exchange ◽  
Fluorescence Analysis ◽  
The Black Sea ◽  
Geochemical Background ◽  
Local Pollution ◽  
Kerch Strait ◽  
Sevastopol Bay ◽  
High Concentrations

The paper analyzes content and spatial distribution peculiarities of macro- and microelements in the bottom sediments of Sevastopol bays, Feodosiya Gulf and Kerch Strait. Bottom sediment sampling was performed from 2005 to 2008 as well as in 2015, 2016, and 2018. Concentrations of macro- (Ti, Fe, Mn) and microelements (As, Pb, Zn, Cu, Ni, Co, Cr, V, Sr) were studied by X-ray fluorescence analysis using Spectroscan MAKS-G spectrometer. The maximal content of Cr, Co, Ni, Zn, Pb, Sr exceeding the geochemical background was found in the water areas with difficult water exchange, which include bays of the Sevastopol region under intense anthropogenic influence: the Yuzhnaya Bay, Gollandiya Bay and Kilen-Bay. In the Kazachya Bay, the least polluted in the Sevastopol bay system, the content of Cr, Co, Ni, Zn, Pb, As, Sr also exceeded their geochemical background. As illustrated by the Balaklava Bay, the paper shows the influence of local pollution sources (the Balaklavka River runoff and municipal waste water) on the microelement distribution. Sevastopol bays are characterized by high concentrations of the studied elements in the bottom sediments. In the water areas with active water exchange, i. e. Feodosiya Gulf and Kerch Strait, concentration of the studied elements, except for Ni, Zn and Cr, did not exceed on the average the geochemical background of the open Black Sea shelf areas.

The new data on seasonal dynamics of species composition, abundance and biomass of Mollusca in the corner part of the Sevastopol bay (the Black Sea)

2018 ◽  
Vol 28 (4) ◽  
pp. 157-162
Author(s):  
M. V. Makarov
Keyword(s):  
Species Composition ◽  
Black Sea ◽  
Seasonal Dynamics ◽  
Trophic Structure ◽  
The Black Sea ◽  
Trophic Groups ◽  
Soft Sediments ◽  
Sevastopol Bay

The new data on seasonal dynamics of species composition, abundance and biomass of molluscs on soft sediments in the corner part of the Sevastopol bay were analyzed. 24 species of molluscs were recorded in 2006-2007. The microdistribution of Mollusca at stations depends on salinity. The trophic structure of molluscs’community was determinated and includes 6 trophic groups.

scholarly journals Composition analysis of phytoplankton microalgae in various water areas of the Black sea near the Crimean peninsula

2020 ◽  
pp. 93-100
Author(s):  
N.A. Andreeva ◽  
◽  
E.A. Grebneva ◽  
Keyword(s):  
Black Sea ◽  
Coastal Waters ◽  
Water Area ◽  
The Black Sea ◽  
Composition Analysis ◽  
Active Growth ◽  
Crimean Peninsula ◽  
Sevastopol Bay ◽  
Different Seasons ◽  
The Crimean Peninsula

Preliminary studies of cultivated phytoplankton microalgae were carried out in water samples collected during four expeditions at oceanographic stations of the coastal waters of the northwestern and northeastern parts of the Black Sea in different seasons of 2019-2020. Some features of the development of the algological component in conditions of changing oceanological characteristics of the environment have been established. In spring, the most active growth of diatoms was revealed in the area from Balaklava to the water area of the Sevastopol Bay.

scholarly journals First record of Pseudodiaptomus marinus (Copepoda: Calanoida: Pseudodiaptomidae) in the Black Sea (Sevastopol Bay)

2016 ◽  
Vol 1 (4) ◽  
pp. 78-80 ◽  
Author(s):  
O. A. Garbazey ◽  
E. V. Popova ◽  
A. D. Gubanova ◽  
D. A. Altukhov
Keyword(s):  
Black Sea ◽  
Structural Changes ◽  
The Black Sea ◽  
Mnemiopsis Leidyi ◽  
Northwestern Pacific ◽  
Basin Scale ◽  
Wide Range ◽  
Sevastopol Bay ◽  
Pseudodiaptomus Marinus

Pseudodiaptomus marinus was initially discovered at the end of September 2016 in a sample taken during a long-term plankton survey of Sevastopol Bay started in 2002. We found 6 females and 12 copepodites (I-V stages) of P. marinus at the center of Sevastopol Bay (St. 3) on September 22. At the mouth of Bay (St. 2) the species was not found. Both females and copepodite stages I-V of P. marinus were found at the both stations on November 11. Abundance of P. marinus increased to 1236 individuals in sample (1373 ind/m3) at the center of the bay. Moreover, two individuals of P. marinus nauplii identified by Sazhina, were found in this sample. At the mouth of the bay abundance of the invasive species reached 103 individuals in sample (103 ind/m3). It is considered to be native to the Northwestern Pacific Ocean, but now species is widespread across the world. Brilinski described in details its distribution in the World's oceans. Recently P. marinus has been found in the Atlantic Ocean in the North Sea and in the Mediterranean Sea. P. marinus is a typical estuarine coastal copepod, living in shallow eutrophic inshore waters. It is tolerant to a wide range of salinity (2.5-35 ptt) and temperature (5-28 ºC) and has the highest invasive potential. Thus species is adapted to relatively low salinities and low winter temperatures of the Black Sea. Copepodite stages at both stations indicate the existence of reproducing populations. Thus, very likely P. marinus is the new established species in coastal area of the Black Sea. As other recent pelagic invaders – the copepods Acartia tonsa Dana 1849, Oithona davisae Ferrari F. D. & Orsi 1984; ctenophores Mnemiopsis leidyi A. Agassiz, 1865 and Beroe ovata Bruguiere, 1789 - P. marinus was most probably brought into Sevastopol Bay in the ballast water of ships. Long-term studies at basin scale are needed to estimate the structural changes in the Black Sea zooplankton community.

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