Subsurface low dissolved oxygen occurred at fresh- and saline-water intersection of the Pearl River estuary during the summer period
文献类型：期刊论文
| 作者 | Li, G; Liu, JX; Diao, ZH; Jiang, X; Li, JJ; Ke, ZX; Shen, PP; Ren, LJ; Huang, LM; Tan, YH |
| 刊名 | MARINE POLLUTION BULLETIN
 |
| 出版日期 | 2018 |
| 卷号 | 126页码:585-591 |
| 通讯作者 | ligang@scsio.ac.cn ; tanyh@scsio.ac.cn |
| 英文摘要 | Estuarine oxygen depletion is one of the worldwide problems, which is caused by the freshwater-input-derived severe stratification and high nutrients loading. In this study we presented the horizontal and vertical distributions of dissolved oxygen (DO) in the Pearl River estuary, together with temperature, salinity, chlorophyll a concentration and heterotrophic bacteria abundance obtained from two cruises during the summer (wet) and winter (dry) periods of 2015. In surface water, the DO level in the summer period was lower and varied greater, as compared to the winter period. The DO remained unsaturated in the summer period if salinity is < 12 and saturated if salinity is > 12; while in the winter period it remained saturated throughout the estuary. In subsurface ( > 5 m) water, the DO level varied from 0.71 to 6.65 mg L-1 and from 6.58 to 8.20 mg L-1 in the summer and winter periods, respectively. Particularly, we observed an area of similar to 1500 km(2) low DO zone in the subsurface water with a threshold of 4 mg DO L-1 during this summer period, that located at the fresh- and saline-water intersection where is characterized with severe stratification and high heterotrophic bacteria abundance. In addition, our results indicate that spatial DO variability in surface water was contributed differently by biological and physio-chemical variables in the summer and winter periods, respectively. |
| 学科主题 | Environmental Sciences & Ecology; Marine & Freshwater Biology |
| 关键词[WOS] | Low dissolved oxygen ; Heterotrophic bacteria ; Fresh- and saline-water intersection ; Pearl River estuary |
| 源URL | [http://ir.scsio.ac.cn/handle/344004/17028]  |
| 专题 | 南海海洋研究所_中科院海洋生物资源可持续利用重点实验室 |
| 推荐引用方式 GB/T 7714 | Li, G,Liu, JX,Diao, ZH,et al. Subsurface low dissolved oxygen occurred at fresh- and saline-water intersection of the Pearl River estuary during the summer period[J]. MARINE POLLUTION BULLETIN,2018,126:585-591. |
| APA | Li, G.,Liu, JX.,Diao, ZH.,Jiang, X.,Li, JJ.,...&Tan, YH.(2018).Subsurface low dissolved oxygen occurred at fresh- and saline-water intersection of the Pearl River estuary during the summer period.MARINE POLLUTION BULLETIN,126,585-591. |
| MLA | Li, G,et al."Subsurface low dissolved oxygen occurred at fresh- and saline-water intersection of the Pearl River estuary during the summer period".MARINE POLLUTION BULLETIN 126(2018):585-591. |
入库方式： OAI收割
来源：南海海洋研究所
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