Early spring testing of environments quality in the Novik Bay (Russky Island, Peter the Great Bay, Japan Sea) in April, 2023
Oceanographic and ecological properties were measured in the Novik Bay of Russky Island (Japan Sea) in early spring (April) of 2023, the indicating groups of microorganisms were examined. Good ecological state of the bay waters was detected. Stable density stratification was already formed, with the...
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| Format: | Article |
| Language: | Russian |
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Transactions of the Pacific Research Institute of Fisheries and Oceanography
2023-10-01
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| Series: | Известия ТИНРО |
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| Online Access: | https://izvestiya.tinro-center.ru/jour/article/view/864 |
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| author | N. K. Khristoforova A. Yu. Lazaryuk T. V. Boychenko A. A. Emelyanov |
| author_facet | N. K. Khristoforova A. Yu. Lazaryuk T. V. Boychenko A. A. Emelyanov |
| author_sort | N. K. Khristoforova |
| collection | DOAJ |
| description | Oceanographic and ecological properties were measured in the Novik Bay of Russky Island (Japan Sea) in early spring (April) of 2023, the indicating groups of microorganisms were examined. Good ecological state of the bay waters was detected. Stable density stratification was already formed, with the water temperature range from 2.3oС at the bottom to 10.0oС on the sea surface and salinity from 33.6 to 31.1, respectively. Dissolved oxygen content was high in the bottom layer (9.6–10.8 mg/L). In the surface layer, the oxygen content was lower, as well as chlorophyll a concentration. Abundance of the colony-forming heterotrophic microorganisms was rather low, so the waters of the bay were characterized as oligosaprobic and pure that indicated accumulation of easily accessible organic matter (accumulation predominated over destruction), apparently due to development of production processes. Some exceptions with zero balance between the production and destruction were found in the Trud Inlet, in the inlet of Sports Club, and at Podnozhye village. Bacteria of the sanitary-indicative group were recorded in small quantities at two stations where they indicated biological and fecal pollution of the water. Microorganisms growing on media with crude oil were observed everywhere, although their number was not high, so the waters of the Novik Bay were identified as low-polluted, in general. However, high abundance of phenol-resistant microorganisms at most of the stations was a signal of significant pollution by phenols, that could have both natural and anthropogenic sources. Metal-resistant microorganisms were not abundant in the surface layer that showed the minimal level of technogenic pressure. Their dominant group was Ni-resistant heterotrophs associated with combustion of hydrocarbon fuel. |
| format | Article |
| id | doaj-art-6c326334dedb4db18bee7e4444004e36 |
| institution | DOAJ |
| issn | 1606-9919 2658-5510 |
| language | Russian |
| publishDate | 2023-10-01 |
| publisher | Transactions of the Pacific Research Institute of Fisheries and Oceanography |
| record_format | Article |
| series | Известия ТИНРО |
| spelling | doaj-art-6c326334dedb4db18bee7e4444004e362025-08-20T03:19:02ZrusTransactions of the Pacific Research Institute of Fisheries and OceanographyИзвестия ТИНРО1606-99192658-55102023-10-01203363964910.26428/1606-9919-2023-203-639-649760Early spring testing of environments quality in the Novik Bay (Russky Island, Peter the Great Bay, Japan Sea) in April, 2023N. K. Khristoforova0A. Yu. Lazaryuk1T. V. Boychenko2A. A. Emelyanov3Far Eastern Federal University; Pacific Institute of Geography, Far Eastern Branch, Russian Ac. Sci.Il’ichev Pacific Oceanological Institute, Far Eastern Branch, Russian Ac. Sci.Far Eastern Federal UniversityInstitute of Marine Biology, National Scientific Centre of Marine Biology, Far Eastern Branch, Russian Ac. Sci.Oceanographic and ecological properties were measured in the Novik Bay of Russky Island (Japan Sea) in early spring (April) of 2023, the indicating groups of microorganisms were examined. Good ecological state of the bay waters was detected. Stable density stratification was already formed, with the water temperature range from 2.3oС at the bottom to 10.0oС on the sea surface and salinity from 33.6 to 31.1, respectively. Dissolved oxygen content was high in the bottom layer (9.6–10.8 mg/L). In the surface layer, the oxygen content was lower, as well as chlorophyll a concentration. Abundance of the colony-forming heterotrophic microorganisms was rather low, so the waters of the bay were characterized as oligosaprobic and pure that indicated accumulation of easily accessible organic matter (accumulation predominated over destruction), apparently due to development of production processes. Some exceptions with zero balance between the production and destruction were found in the Trud Inlet, in the inlet of Sports Club, and at Podnozhye village. Bacteria of the sanitary-indicative group were recorded in small quantities at two stations where they indicated biological and fecal pollution of the water. Microorganisms growing on media with crude oil were observed everywhere, although their number was not high, so the waters of the Novik Bay were identified as low-polluted, in general. However, high abundance of phenol-resistant microorganisms at most of the stations was a signal of significant pollution by phenols, that could have both natural and anthropogenic sources. Metal-resistant microorganisms were not abundant in the surface layer that showed the minimal level of technogenic pressure. Their dominant group was Ni-resistant heterotrophs associated with combustion of hydrocarbon fuel.https://izvestiya.tinro-center.ru/jour/article/view/864hydrological and hydrobiological profilingmicrobial indicationnovik baypeter the great bayjapan sea |
| spellingShingle | N. K. Khristoforova A. Yu. Lazaryuk T. V. Boychenko A. A. Emelyanov Early spring testing of environments quality in the Novik Bay (Russky Island, Peter the Great Bay, Japan Sea) in April, 2023 Известия ТИНРО hydrological and hydrobiological profiling microbial indication novik bay peter the great bay japan sea |
| title | Early spring testing of environments quality in the Novik Bay (Russky Island, Peter the Great Bay, Japan Sea) in April, 2023 |
| title_full | Early spring testing of environments quality in the Novik Bay (Russky Island, Peter the Great Bay, Japan Sea) in April, 2023 |
| title_fullStr | Early spring testing of environments quality in the Novik Bay (Russky Island, Peter the Great Bay, Japan Sea) in April, 2023 |
| title_full_unstemmed | Early spring testing of environments quality in the Novik Bay (Russky Island, Peter the Great Bay, Japan Sea) in April, 2023 |
| title_short | Early spring testing of environments quality in the Novik Bay (Russky Island, Peter the Great Bay, Japan Sea) in April, 2023 |
| title_sort | early spring testing of environments quality in the novik bay russky island peter the great bay japan sea in april 2023 |
| topic | hydrological and hydrobiological profiling microbial indication novik bay peter the great bay japan sea |
| url | https://izvestiya.tinro-center.ru/jour/article/view/864 |
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