Vertical variation of bacterial production and potential role in oxygen loss in the southern Bay of Bengal
Marine environments wherein long-term microbial oxygen consumption exceeds oxygen replenishment can be associated with oxygen minimum zones (OMZ). The Bay of Bengal OMZ (BOB-OMZ) is one of the most intense OMZs globally. To assess the contribution of bacterial oxygen consumption to oxygen loss in BO...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2023-11-01
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| Series: | Frontiers in Microbiology |
| Subjects: | |
| Online Access: | https://www.frontiersin.org/articles/10.3389/fmicb.2023.1250575/full |
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| author | Wenqi Ye Xiao Ma Chenggang Liu Ruijie Ye W. N. C. Priyadarshani Ruchi Jayathilake Ashoka Weerakoon Udeshika Wimalasiri P. A. K. N. Dissanayake Gayan Pathirana R. G. A. Iroshanie Yuanli Zhu Zhongqiao Li Bin Wang Lu Shou Lihua Ran Feng Zhou Jianfang Chen Ping Du |
| author_facet | Wenqi Ye Xiao Ma Chenggang Liu Ruijie Ye W. N. C. Priyadarshani Ruchi Jayathilake Ashoka Weerakoon Udeshika Wimalasiri P. A. K. N. Dissanayake Gayan Pathirana R. G. A. Iroshanie Yuanli Zhu Zhongqiao Li Bin Wang Lu Shou Lihua Ran Feng Zhou Jianfang Chen Ping Du |
| author_sort | Wenqi Ye |
| collection | DOAJ |
| description | Marine environments wherein long-term microbial oxygen consumption exceeds oxygen replenishment can be associated with oxygen minimum zones (OMZ). The Bay of Bengal OMZ (BOB-OMZ) is one of the most intense OMZs globally. To assess the contribution of bacterial oxygen consumption to oxygen loss in BOB-OMZ, we measured bacterial production (BP), temperature, salinity, and dissolved oxygen (DO) in the whole water column. We then compared the estimated bacterial oxygen demand (BOD) with diapycnal oxygen supply (DOS) at depths of 50–200 m in the southern BOB in January 2020. The average BP was 3.53 ± 3.15 μmol C m−3 h−1 in the upper 200 m of four stations, which was lower than those reported in other tropical waters. The vertical distribution of BP differed between the open ocean and nearshore areas. In the open ocean, temperature and DO were the most important predictors for BP in the whole water column. In the nearshore areas, when DO increased sharply from the suboxic state, extremely high BP occurred at 200 m. The average estimated BOD/DOS could reach up to 153% at depths of 50–200 m, indicating advection and anticyclonic eddies probably are important DO replenishment pathways in the BOB. |
| first_indexed | 2024-03-11T11:44:27Z |
| format | Article |
| id | doaj.art-413dfea4f60a4af2a19a16bd587d4090 |
| institution | Directory Open Access Journal |
| issn | 1664-302X |
| language | English |
| last_indexed | 2024-03-11T11:44:27Z |
| publishDate | 2023-11-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Microbiology |
| spelling | doaj.art-413dfea4f60a4af2a19a16bd587d40902023-11-09T16:15:02ZengFrontiers Media S.A.Frontiers in Microbiology1664-302X2023-11-011410.3389/fmicb.2023.12505751250575Vertical variation of bacterial production and potential role in oxygen loss in the southern Bay of BengalWenqi Ye0Xiao Ma1Chenggang Liu2Ruijie Ye3W. N. C. Priyadarshani4Ruchi Jayathilake5Ashoka Weerakoon6Udeshika Wimalasiri7P. A. K. N. Dissanayake8Gayan Pathirana9R. G. A. Iroshanie10Yuanli Zhu11Zhongqiao Li12Bin Wang13Lu Shou14Lihua Ran15Feng Zhou16Jianfang Chen17Ping Du18Key Laboratory of Marine Ecosystem Dynamics, Second Institute of Oceanography, Ministry of Natural Resources (MNR), Hangzhou, ChinaState Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, MNR, Hangzhou, ChinaKey Laboratory of Marine Ecosystem Dynamics, Second Institute of Oceanography, Ministry of Natural Resources (MNR), Hangzhou, ChinaState Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, MNR, Hangzhou, ChinaNational Institute of Oceanography and Marine Sciences, National Aquatic Resources Research and Development Agency (NARA), Colombo, Sri LankaNational Institute of Oceanography and Marine Sciences, National Aquatic Resources Research and Development Agency (NARA), Colombo, Sri LankaNational Institute of Oceanography and Marine Sciences, National Aquatic Resources Research and Development Agency (NARA), Colombo, Sri LankaNational Institute of Oceanography and Marine Sciences, National Aquatic Resources Research and Development Agency (NARA), Colombo, Sri LankaDepartment of Oceanography and Marine Geology, Faculty of Fisheries and Marine Sciences & Technology, University of Ruhuna, Matara, Sri LankaDepartment of Oceanography and Marine Geology, Faculty of Fisheries and Marine Sciences & Technology, University of Ruhuna, Matara, Sri LankaDepartment of Oceanography and Marine Geology, Faculty of Fisheries and Marine Sciences & Technology, University of Ruhuna, Matara, Sri LankaKey Laboratory of Marine Ecosystem Dynamics, Second Institute of Oceanography, Ministry of Natural Resources (MNR), Hangzhou, ChinaKey Laboratory of Marine Ecosystem Dynamics, Second Institute of Oceanography, Ministry of Natural Resources (MNR), Hangzhou, ChinaKey Laboratory of Marine Ecosystem Dynamics, Second Institute of Oceanography, Ministry of Natural Resources (MNR), Hangzhou, ChinaKey Laboratory of Marine Ecosystem Dynamics, Second Institute of Oceanography, Ministry of Natural Resources (MNR), Hangzhou, ChinaKey Laboratory of Marine Ecosystem Dynamics, Second Institute of Oceanography, Ministry of Natural Resources (MNR), Hangzhou, ChinaState Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, MNR, Hangzhou, ChinaKey Laboratory of Marine Ecosystem Dynamics, Second Institute of Oceanography, Ministry of Natural Resources (MNR), Hangzhou, ChinaKey Laboratory of Marine Ecosystem Dynamics, Second Institute of Oceanography, Ministry of Natural Resources (MNR), Hangzhou, ChinaMarine environments wherein long-term microbial oxygen consumption exceeds oxygen replenishment can be associated with oxygen minimum zones (OMZ). The Bay of Bengal OMZ (BOB-OMZ) is one of the most intense OMZs globally. To assess the contribution of bacterial oxygen consumption to oxygen loss in BOB-OMZ, we measured bacterial production (BP), temperature, salinity, and dissolved oxygen (DO) in the whole water column. We then compared the estimated bacterial oxygen demand (BOD) with diapycnal oxygen supply (DOS) at depths of 50–200 m in the southern BOB in January 2020. The average BP was 3.53 ± 3.15 μmol C m−3 h−1 in the upper 200 m of four stations, which was lower than those reported in other tropical waters. The vertical distribution of BP differed between the open ocean and nearshore areas. In the open ocean, temperature and DO were the most important predictors for BP in the whole water column. In the nearshore areas, when DO increased sharply from the suboxic state, extremely high BP occurred at 200 m. The average estimated BOD/DOS could reach up to 153% at depths of 50–200 m, indicating advection and anticyclonic eddies probably are important DO replenishment pathways in the BOB.https://www.frontiersin.org/articles/10.3389/fmicb.2023.1250575/fullBay of BengalOMZbacterial productiondiapycnal oxygen supplybacterial oxygen consumption |
| spellingShingle | Wenqi Ye Xiao Ma Chenggang Liu Ruijie Ye W. N. C. Priyadarshani Ruchi Jayathilake Ashoka Weerakoon Udeshika Wimalasiri P. A. K. N. Dissanayake Gayan Pathirana R. G. A. Iroshanie Yuanli Zhu Zhongqiao Li Bin Wang Lu Shou Lihua Ran Feng Zhou Jianfang Chen Ping Du Vertical variation of bacterial production and potential role in oxygen loss in the southern Bay of Bengal Frontiers in Microbiology Bay of Bengal OMZ bacterial production diapycnal oxygen supply bacterial oxygen consumption |
| title | Vertical variation of bacterial production and potential role in oxygen loss in the southern Bay of Bengal |
| title_full | Vertical variation of bacterial production and potential role in oxygen loss in the southern Bay of Bengal |
| title_fullStr | Vertical variation of bacterial production and potential role in oxygen loss in the southern Bay of Bengal |
| title_full_unstemmed | Vertical variation of bacterial production and potential role in oxygen loss in the southern Bay of Bengal |
| title_short | Vertical variation of bacterial production and potential role in oxygen loss in the southern Bay of Bengal |
| title_sort | vertical variation of bacterial production and potential role in oxygen loss in the southern bay of bengal |
| topic | Bay of Bengal OMZ bacterial production diapycnal oxygen supply bacterial oxygen consumption |
| url | https://www.frontiersin.org/articles/10.3389/fmicb.2023.1250575/full |
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