Ecological characteristic of water in the Eastern Bosporus Strait by oxygen parameters

Nadezhda K Khristoforova,Yulia E Degteva,Alexander A Emelyanov,Ksenia S Berdasova

doi:10.26428/1606-9919-2015-181-161-168

Abstract

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.

Highlights

В самые последние годы накануне Саммита АТЭС — 2012, проходившего во Владивостоке, в столице Приморья началось активное строительство дорог и мостов — низководного, протянувшегося от района р
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

Summary

ПО КИСЛОРОДНЫМ ПОКАЗАТЕЛЯМ

Изучены пространственное распределение и сезонная динамика основных химикоэкологических показателей водной среды: растворенного кислорода, биохимического потребления кислорода и перманганатной окисляемости в осенний, весенний и летний сезоны 2013–2014 гг. в поверхностных водах прол. 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. Босфор Восточный с акцентом на двух бухтах — Аякс и Парис — на основе кислородных показателей. Петра Великого Японского моря): 1 — мыс Ахлестышева (Уссурийский залив); 2 — водосброс из океанариума; 3 — водозабор для океанариума; 4 — мыс Житкова; 5 — бухта Житкова; 6 — центральная часть бухты Парис; 7 — кут бухты Парис; 8 — бухта Балка; 9 — северный мыс бухты Парис; — южный берег бухты Аякс; — веха банки Скрягина; — прол. Sheme of water sampling in the Eastern Bosporus Strait (Peter the Great Bay, Japan Sea): 1 — Cape Ahlestyshev; 2 — aquarium water out; 3 — aquarium water in; 4 — Cape Zhitkov; 5 — Zhitkov Bight; 6–7 — Paris Bight; 8 — Balk Bight; 9 — northern cape of the Paris Bight; — southern coast of the Ajax Bight; — Skryagin Bank; — Eastern Bosporus Strait; — Far-Eastern Federal University pear in the Ajax Bight; 14–17 — northern Ajax Bight; — Cape Basargin; — Ulysses Bight; — Diomed Bight; — Golden Horn Bight; — Cape Tokarevsky (lighthouse)

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