Changes in the species composition of seaweeds of phytocenoses with dominance of Zostera L. in the Strait of Kerch (Crimean coast of the Black Sea, Ukraine)

2001 ◽  
Vol 3 (2) ◽  
pp. 90-101
Author(s):  
S. Ye. Sadogurskiy
Keyword(s):  
Species Composition ◽  
Black Sea ◽  
The Black Sea

scholarly journals Microalgae of mud volcano of the Bulganak sopochnoe field on the Crimean Peninsula

2020 ◽  
Vol 5 (1) ◽  
pp. 64-77
Author(s):  
L. I. Ryabushko ◽  
A. V. Bondarenko
Keyword(s):  
Species Composition ◽  
Black Sea ◽  
Brackish Water ◽  
Mud Volcano ◽  
General Distribution ◽  
The Black Sea ◽  
Sea Of Azov ◽  
Mud Volcanoes ◽  
The Sea Of Azov ◽  
The World

Mud volcanoes are one of unique natural phenomena widely spread around the world. They can be found in Crimea, including the Bulganak sopochnoe field – the largest cluster of active mud volcanoes on the peninsula (45°25′29.04″N, 36°27′51.64″E). Study of mud volcano microalgae in Crimea, as well as in other regions of Russia, has not been conducted so far. Therefore, scientific interest is caused by need and urgency of the study of these volcanoes. First data on microalgae species composition of active mud volcanoes are presented in this article. Samples collected by O. Yu. Eremin (03.08.2012 and 13.04.2013) in the upper 2–3-cm layer of suspension and in surface water were investigated. The ranges of salinity and water temperature were 27–32 g per L and +28…+31 °C, respectively. Microalgae species composition was determined in water preparations using Axioskop 40 (Carl Zeiss) light microscope at magnification of 10×40 with software AxioVision Rel. 4.6. Totally 16 taxa were found: Cyanobacteria (1), Dinophyta (2), Bacillariophyta (6), and Euglenophyta (7). Of these, cyanobacteria Chamaecalyx swirenkoi (Schirshov) Komárek et Anagnostidis, 1986 was found by us in the mud volcano in August 2012. Pennate species of diatoms were also identified – single living (of genera Cylindrotheca (Ehrenberg) Reimann & J. C. Lewin, Lyrella Karajeva, and Nitzschia Hassall) and colonial species (of genera Berkeleya Greville and Pseudo-nitzschia H. Peragallo). The brackish-water, benthic, boreal-tropical species Nitzschia thermaloides Hustedt was recorded for the algal flora of Crimea, the Black Sea, and the Sea of Azov for the first time. Euglenophytes were also found in the samples – 5 species of the genus Trachelomonas Ehrenberg and 2 species of the genus Strombomonas Deflandre. Of all the species found in the mud volcano ecotope, 7 species are common for the Black Sea, and 9 species, including 3 euglenophytes, are common for the Sea of Azov. It is shown that by characteristics of halobility, species found in the mud volcano belong to freshwater complex (53 %), with a significant share of marine (27 %) and brackish-water (20 %) species. Of the phytogeographic flora elements, boreal species make up 33 %, boreal-tropical – 47 %, and cosmopolites – 20 %. Three species of potentially toxic algae are recorded: diatom Pseudo-nitzschia prolongatoides (Hasle) Hasle, 1993, as well as dinophytes Prorocentrum lima (Ehrenberg) Dodge, 1975 and Alexandrium tamiyavanichii Balech, 1994. The last species is marine, boreal-tropical, and new to the algology of Crimea, the Black Sea, and the Sea of Azov. In the article, own and literary data on morphology, ecology, and phytogeography of species, as well as on their general distribution in different waterbodies of the world, are also presented. Some microalgae species are indicators of saprobity; they are able to participate in purification of water from organic substances. Photos of mud volcanoes and micrographs of some species are presented.

scholarly journals The macrozoobenthos under clam farm (the Black Sea, Sevastopol region)

2018 ◽  
Vol 3 (1) ◽  
pp. 9-22 ◽  
Author(s):  
N. A. Boltacheva ◽  
M. V. Makarov ◽  
L. V. Bondarenko ◽  
M. A. Kovaleva
Keyword(s):  
Species Diversity ◽  
Species Composition ◽  
Black Sea ◽  
Rare Species ◽  
Trophic Structure ◽  
Bivalve Mollusk ◽  
The Black Sea ◽  
Density And Biomass

During 2015–2106 the macrozoobenthos under the clam farm located in the area of Sevastopol was investigated. The aim of the study is to consider species composition, density and biomass of macrozoobenthos in the area of the clam farm. The samples were taken using standard benthic techniques. Relatively low species diversity was observed, with 56 species of macrozoobenthos identified. The density was 500–975 ind. per m², the biomass varied from 0.8 to 381.1 g·m-2. The community of the bivalve mollusk Lucinella divaricata (Linnaeus, 1758) was found. Trophic structure of the community with high quantity of detritus feeders dominated by small polychaetes was determined. The dominating, typical and rare species were identified. Comparison with the data obtained in 1957 in Evpatoriya – Sevastopol area at the same depths and sediments was made.

scholarly journals Amphipod (Crustacea, Amphipoda) Communities in the North-Western Part of the Black Sea

2016 ◽  
Vol 50 (5) ◽  
pp. 387-394
Author(s):  
S. A. Kudrenko
Keyword(s):  
Species Composition ◽  
Community Composition ◽  
Black Sea ◽  
The Black Sea ◽  
Published Data ◽  
Amphipod Species ◽  
Quantitative Parameters ◽  
The North ◽  
North Western

Abstract The data about the community composition, number and biomass of amphipods in three gulfs of the North-Western Black Sea are presented. The amphipod communities of the gulfs of Yahorlyk, Karkinit, and Tendra were studied and the species composition was compared with the previously published data. For each particular gulf, the list of amphipod species was composed. The quantitative parameters of the amphipod communities in the studied localities in different years were described.

scholarly journals Revision of the dinoflagellate species composition of the Black Sea

Algologia ◽  
2018 ◽  
Vol 28 (4) ◽  
pp. 428-448 ◽  
Author(s):  
A.F. Krakhmalnyi ◽  
◽  
Y.B. Okolodkov ◽  
Yu.V. Bryantseva ◽  
A.V. Sergeeva ◽  
...  
Keyword(s):  
Species Composition ◽  
Black Sea ◽  
The Black Sea

scholarly journals Sponge community of the western Black Sea shallow water caves: diversity and spatial distribution

PeerJ ◽  
2018 ◽  
Vol 6 ◽  
pp. e4596 ◽  
Author(s):  
Alexander Ereskovsky ◽  
Oleg A. Kovtun ◽  
Konstantin K. Pronin ◽  
Apostol Apostolov ◽  
Dirk Erpenbeck ◽  
...  
Keyword(s):  
Species Composition ◽  
Black Sea ◽  
Molecular Data ◽  
The Black Sea ◽  
North East ◽  
Open Sea ◽  
Sponge Diversity ◽  
Morphological And Molecular Data ◽  
Species Composition And Distribution ◽  
First Time

Marine caves possess unique biocoenotic and ecological characteristics. Sessile benthic species such as sponges associated with cave habitats typically show a marked zonation from the cave entrance towards the end of the cave. We describe three semi-submerged karstic caves of 50 to 83 m length and 936 to 2,291 m3volume from the poorly explored cavernicolous fauna of North-East Bulgaria. We surveyed sponge diversity and spatial variability. Eight demosponge species were identified based on morphological and molecular data, of which six are known from the adjacent open sea waters of the Black Sea. Two species,Protosuberites denhartogivan Soest & de Kluijver, 2003 andHalichondria bowerbankiBurton, 1930, are reported from the Black Sea for the first time. The spatial sponge distribution inside the caves is in general similar, but shows some differences in species composition and distribution depending on cave relief and hydrodynamics. The species composition of sponges of Bulgarian caves is found to be different from Crimean caves. An updated checklist of the Black Sea sponges is provided.

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 THE NATURE PROTECTION ASPECT OF THE BLACK SEA FISH MYXOSPOREAN STUDIES

2013 ◽  
Vol 47 (6) ◽  
pp. 62-70 ◽  
Author(s):  
V. M. Yurakhno
Keyword(s):  
Nature Conservation ◽  
Species Composition ◽  
Black Sea ◽  
The Black Sea ◽  
Fish Health ◽  
Nature Protection ◽  
Fish Hosts ◽  
Myxosporean Species ◽  
Sea Fish

Abstract The species composition and indices of the myxosporeans infecting fish from the different nature conservation Black Sea regions were considered on the base of the original investigations and literature data. Myxosporean inhabiting the Red Book fish hosts were investigated. The myxosporean species potentially pathogenic for the fish health were identified and epizootological situation was estimated.

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