Chemical and ecological state of the waters in the Novik Bay (Russky Island, Peter the Great Bay, Japan Sea)

• Published in: Izvestiya TINRO
• Main Authors: Nadezhda K. Khristoforova, Yulia E. Degteva, Ksenia S. Berdasova, Alexander A. Emelyanov, Alexander Yu. Lazaryuk
• Format: Article in Journal/Newspaper
• Language: Russian
• Published: Transactions of the Pacific Research Institute of Fisheries and Oceanography 2016
• Subjects: бухта новик; о. русский; амурский залив; гидрохимическое обследование; сезонные изменения; Aquaculture. Fisheries. Angling; SH1-691; Sea ice
• Online Access: https://doi.org/10.26428/1606-9919-2016-186-135-144; https://doaj.org/article/77a231dc53ce4326bc988a8e68a3cde5

Chemical and ecological state of the Novik Bay waters is described on the data of surveys conducted in summer, autumn, winter, and spring of 2014-2015. Lowered content of dissolved oxygen is noted for summer, with occasional decreasing to 5-6 mg/L that is below the standard summer value for fishery ponds. However, the oxygen content restores quickly in autumn, up to 12 mg/L, that is conditioned by hydrodynamic activity, water temperature decreasing, and phytoplankton blooming. The latter process is confirmed by high values of BOD5 (4.44-5.58 mgO2/L) in autumn. Winter conditions under the sea ice are satisfactory for marine organisms: dissolved oxygen content is > 4 mg/L in the whole water column that is close to the standard winter value for fishery ponds.