BENTHIC FORAMINIFERA INDICATE ENVIRONMENTAL STRESS FROM RIVER DISCHARGE TO MARINE ECOSYSTEMS: EXAMPLE FROM THE BLACK SEA

2017 ◽  
Vol 47 (1) ◽  
pp. 70-92 ◽  
Author(s):  
Valentina Yanko-Hombach ◽  
Tetiana Kondariuk ◽  
Irena Motnenko
Author(s):  
Bogdan Cioruța ◽  
Diana Mădăras ◽  
Mirela Coman

Until the beginning of the 21st century concerns related to the management of protected areas have been reduced to the voluntary initiatives of nature lovers, rarely materializing in specific conservation measures carried out by the authorities or administrators of those areas. As the concern for the management of protected areas is relatively new in Romania and the information related to this subject is relatively scarce, especially those regarding marine ecosystems, we considered necessary this study on the management of marine protected areas in relation to oil pollution. Marine protected areas, in particular, delimited as areas where the main purpose is the protection of nature and cultural values, are important for all segments of society. They have great potential to become models of harmonious society development, promoting more than other protected areas the sustainable resource management. At the same time, the management measures promoted, sometimes imposed, can affect the communities inside or in the immediate vicinity of the areas, and can significantly influence the development of the economy. Recently (as a reference 1970-2020), the pollution of the marine environment with petroleum products has gained dramatic accents. The maritime transport of oil, the exploration and exploitation of marine deposits, their processing in refineries located in the vicinity of the coastal area, to which are added other anthropogenic activities, have generated and still generate a number of risk factors, which involve numerous pollution incidents. Navigation accidents of large oil tanks or incidents at offshore drilling rigs caused, in the same period, major environmental disasters, with the most severe consequences. Marine ecosystems in polluted regions have thus suffered major losses and disturbances, which have been felt for a long time. Through this paper we aim to review some aspects of oil pipeline pollution of the Planetary Ocean, respectively the associated pollution in the Black Sea ecosystem. Following the analyzes carried out on the basis of the data from the consulted literature, as well as following other observations, we came to the conclusion that the protected areas associated with the Black Sea, as well as the marine ecosystem itself, are far from being affected by such accidents.


Author(s):  
Bogdan-Vasile Cioruța ◽  
Alexandru Leonard Pop ◽  
Mirela Coman

As the concern for the management of protected areas is relatively new in Romania, and the information related to this topic is relatively scarce, especially those on marine ecosystems, we considered necessary this study on the management of marine protected areas with specific biodiversity illustrated by philately. Marine protected areas, in particular, delimited as areas where the main purpose is the protection of nature and cultural values, are important for all segments of society. Through this paper, we aimed to review several aspects, ecological and philatelic alike, regarding the specific biodiversity of the Black Sea ecosystem. Following the analyzes performed on account of the data from the consulted specialized literature (in the form of postage stamps, FDCs, occasional envelopes, and maximum postcards, but also other philatelic effects), as well as as a result of other observations (with catalogs and sites with philatelic content), we concluded that the biodiversity of the Black Sea, as well as the marine ecosystem itself, are relatively well represented in Romanian philately. The four philatelic issues illustrate crustaceans, mollusks, corals, and anemones, but also other species, all being to the liking of the general public in terms of information and promotion.


The work is devoted to application of the benthic foraminifera for an evaluation of an geoecological situation on a northwest shelf of the Black Sea. The awake role of organisms with carbonaceous function is marked during biological absorption of toxic bonds. The attributes of stressful situations on population and organismic level include a degree of a surviving of species and morphological changes of the foraminifera. These parameters applied for abjection of geographic ranges of a toxic stimulation, development and anomalous morphology of organisms. Purpose. The aim of this work is to analyze the effect of significant cadmium content on benthic foraminifers of the Black Sea shelf (Danube Delta region). Methods. Field studies provided for the selection, documentation and preparation of analytical samples. Micro-paleontological and lithologic-geochemical studies of bottom sediments were carried out in accordance with accepted methods. The method for studying foraminifera includes the following operations: sampling, separation, preservation and preparation for analysis, taxonomic identification, morphological analysis, biomineralogical studies and mathematical processing of results. Results. The conducted observations confirm the possibility of differentiated assessment of heavy metal contamination by the example of cadmium in the shelf Black Sea. Areas of pollution are characterized by a decrease in the species diversity of foraminifera compared to uncontaminated areas. In sediments with a high content of cadmium, foraminifera are characterized by depressed forms with numerous deformities. Conclusions. A significant concentration of cadmium strongly affects the occurrence of foraminifera and the appearance of morphological anomalies in their shells.


1979 ◽  
Vol 40 (C2) ◽  
pp. C2-445-C2-448
Author(s):  
D. Barb ◽  
L. Diamandescu ◽  
M. Morariu ◽  
I. I. Georgescu

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