Bacterial abundance and community structure in response to nutrients and photodegraded terrestrial humic acids in a eutrophic lake
文献类型：期刊论文
| 作者 | Hu, En; Hu, Longgang; Zheng, Yu; Wu, Yuxin; Wang, Xifeng; Sun, Changshun; Su, Yaling |
| 刊名 | ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
 |
| 出版日期 | 2021 |
| 卷号 | 29期号:6页码:8218-8231 |
| 英文摘要 | The exposure of humic substances to solar radiation can alter their concentration and composition and subsequently influences their bioavailability in aquatic food webs. With eutrophication increasingly prominent in lakes, nutrients, such as inorganic N and P, are a prerequisite for heterotrophic bacteria that use organic matter. Here photodegradation of terrestrial humic acids and nutrient addition were performed to investigate the response of bacterial abundance and community structure to photodegraded humic acids and increased nutrient concentrations in a eutrophic lake. Results showed that the decreasing level of absorption coefficient at 460 nm in the treatment irradiated with 40 W UV lamps was more remarkable than that of the treatment irradiated with 20 W UV lamps and the control. This reduced coefficient corresponds to the greatest decrease in humic acid concentration in the 40 W group. Bacteria showed high abundance after incubation with humic acids which underwent strong irradiation intensity. An increased nutrient concentration significantly affected bacterial abundance. The dominant bacteria were Aquabacterium for the irradiated group, Aquabacterium and Limnobacter for the 20 W group and Flavobacterium and Limnobacter for the 40 W group. Armatimonadetes-gp4 and Sediminibacterium showed evident response to high nutrient concentration. Our results showed that the exposure of terrestrial humic acids to UV light and the increasing concentration of nutrients have obviously changed bacterial community. |
| 源URL | [http://159.226.73.51/handle/332005/20402]  |
| 专题 | 中国科学院南京地理与湖泊研究所 |
| 推荐引用方式 GB/T 7714 | Hu, En,Hu, Longgang,Zheng, Yu,et al. Bacterial abundance and community structure in response to nutrients and photodegraded terrestrial humic acids in a eutrophic lake[J]. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,2021,29(6):8218-8231. |
| APA | Hu, En.,Hu, Longgang.,Zheng, Yu.,Wu, Yuxin.,Wang, Xifeng.,...&Su, Yaling.(2021).Bacterial abundance and community structure in response to nutrients and photodegraded terrestrial humic acids in a eutrophic lake.ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,29(6),8218-8231. |
| MLA | Hu, En,et al."Bacterial abundance and community structure in response to nutrients and photodegraded terrestrial humic acids in a eutrophic lake".ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH 29.6(2021):8218-8231. |
入库方式： OAI收割
来源：南京地理与湖泊研究所
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