Estimation of plastic waste inputs from land into the Caspian Sea: A significant unseen marine pollution

2020 ◽  
Vol 151 ◽  
pp. 110871 ◽  
Author(s):  
Mehdi Ghayebzadeh ◽  
Hassan Aslani ◽  
Hassan Taghipour ◽  
Saeid Mousavi
Legal Concept ◽  
2021 ◽  
pp. 45-49
Author(s):  
Araz Mursaliev ◽  

Introduction: in the paper, the author aims to analyze the content and legal significance of the international legal principles of environmental protection in the context of the prospects for the formation of an international environmental organization in the Caspian region. The author focuses on the principles that have already been enshrined in the international legal treaties concluded by the Caspian Sea States: the precautionary approach, the “polluter pays” principle, the principle of accessibility of information on marine pollution, and the principle of the ecosystem approach. Methods: the methodological framework for the study is the methods of analysis and synthesis, the empirical methods of comparison, interpretation, as well as such specific scientific methods as the legaldogmatic method and the method of interpretation of legal norms. Results: the results of the study show that the development of the regional environmental protection institutions in the Caspian region should take into account the international legal principles of environmental protection. In particular, based on the analysis of the abovementioned international legal principles, the author justifies the need to give a possible regional interstate environmental organization the functions of monitoring, tracking the causes of harm, the function of a center for collecting, processing and distributing information, as well as coordinating the activities of all existing international and national structures to improve the efficiency of their cooperation. Discussion and conclusions: the development of the regional environmental institutions is impossible without taking into account the international legal principles enshrined in the regional international treaties. The author concludes that it is necessary to apply the content of such principles in the formation of a regional interstate environmental organization.


Author(s):  
Edward Vladimirovich Nikitin

Shallow coastal waters of the Volga river is a flooded feeding area for fish juveniles of nonmigratory fish species. There takes place annual downstream migration of fluvial anadromous fish species from spawning grounds of the Volga river to the Northern Caspian Sea. The most important factors determining the number and qualitative characteristics of fry fishes are the level of the Caspian Sea (currently having a tendency to the lowering), hydrological and thermal regimes of the Volga river. Researches were carried out in definite periods of time. In the summer-autumn period of 2012 fry fishes were presented by 19 species (13 of them were commercial species), which belonged to 9 families. The article gives data on all the commercial fish species. In the first decade of July the maximum number of fry fish was registered in the western part of the Volga outfall offshore - in box 247 (19.86 mln specimens/km2), in the eastern part - in box 142 (20.4 mln specimens/km2). The most populous were roach, red-eye, silver bream and bream; size-weight characteristics were better in the areas remoted from the Volga delta. In the third decade of July the quantitative indicators of fry fish on these areas decreased, size-weight characteristics greatly increased. In the second decade of October in the western part of the seaside there were registered increased pre-wintering concentrations of fish juveniles, their qualitative indicators increased, which is evidence to favorable feeding conditions in 2012.


2020 ◽  
Vol 324 (2) ◽  
pp. 262-272
Author(s):  
I.V. Doronin ◽  
T.N. Dujsebayeva ◽  
K.M. Akhmedenov ◽  
A.G. Bakiev ◽  
K.N. Plakhov

The article specifies the type locality of the Steppe Ribbon Racer. The holotype Coluber (Taphrometopon) lineolatus Brandt, 1838 is stored in the reptile collection of the Zoological Institute of the Russian Academy of Sciences (ZISP No 2042). Literature sources provide different information about the type locality. A mistake has been made in the title of the work with the original species description: the western coast of the sea was indicated instead of the eastern one. The place of capture was indicated as “M. Caspium” (Caspian Sea) on the label and in the reptile inventory book of the Zoological Museum of the Academy of Sciences. The specimen was sent to the museum by G.S. Karelin. The “1842” indicated on the labels and in the inventory book cannot be the year of capture of the type specimen, just as the “1837” indicated by A.M. Nikolsky. In 1837, Karelin was in Saint Petersburg and in 1842 in Siberia. Most likely, 1837 is the year when the collection arrived at the Museum, and 1842 is the year when the information about the specimen was recorded in the inventory book (catalog) of the Zoological Museum of the Academy of Sciences. In our opinion, the holotype was caught in 1932. From Karelin’s travel notes of the expedition to the Caspian Sea in 1832, follows that the snake was recorded in two regions adjacent to the eastern coast of the Caspian Sea – Ungoza Mountain (“Mangyshlak Mountains”) and site of the Western Chink of Ustyurt between Zhamanairakty and Kyzyltas Mountains (inclusive) on the northeast coast of Kaydak Sor (“Misty Mountains”). In our article, Karelin’s route to the northeastern coast of the Caspian Sea in 1832 and photographs of these localities are given. The type locality of Psammophis lineolatus (Brandt, 1838) should be restricted to the Mangystau Region of the Kazakhstan: Ungoza Mountain south of Sarytash Gulf, Mangystau (Mangyshlak) Penninsula (44°26´ N, 51°12´ E).


Author(s):  
Nepomenko Leonid ◽  
◽  
Popova Natalia ◽  
Zubanov Stepan ◽  
Ostrovskaya Elena ◽  
...  

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