Open AccessEcological characteristic of water in the Eastern Bosporus Strait by oxygen parameters
Author(s) -
Н. К. Христофорова,
Александр Анатольевич Емельянов,
Ксения Сергеевна Бердасова,
Юлия Евгеньевна Дегтева
Publication year - 2015
Publication title -
izvestiâ tinro/izvestiâ tihookeanskogo naučno-issledovatelʹskogo rybohozâjstvennogo centra
Language(s) - English
Resource type - Journals
eISSN - 2658-5510
pISSN - 1606-9919
DOI - 10.26428/1606-9919-2015-181-161-168
Subject(s) - spring (device) , oceanography , environmental science , bay , water circulation , biochemical oxygen demand , sewage , pollution , bottom water , period (music) , hydrology (agriculture) , eutrophication , ecology , sewage treatment , chemical oxygen demand , geology , environmental engineering , biology , mechanical engineering , geotechnical engineering , nutrient , engineering , inlet , physics , acoustics
Spatial distribution and seasonal variability of the basic ecological parameters for marine water, as dissolved oxygen content, biochemical oxygen demand, and permanganate oxidizability are considered for the Eastern Bosporus Strait (Peter the Great Bay, Japan Sea) on the data obtained in autumn, spring and summer seasons of 2013-2014, with special attention to the Ajax and Paris Bights of Russky Island on the southern coast of the Strait, changed significantly after construction of new university campus and marine aquarium. Normal oxygen regime is observed over the whole strait in autumn, but cases of low dissolved oxygen content, close to the minimal permissible level, are revealed in spring and summer. This phenomenon is an important feature of environmental conditions in the Strait in the warm period. It is possibly reasoned by general pollution of marine environments by sewage water, high water temperature, and relatively high concentration of suspended matter caused by active water circulation in the narrow strait and heavy rains. However, there is no any specific anthropogenic impact on the oxygen content in the Ajax and Paris Bights.