Increased Nitrogen Loading Boosts Summer Phytoplankton Growth by Alterations in Resource and Zooplankton Control: A Mesocosm Study
文献类型：期刊论文
| 作者 | He, Hu; Chen, Kunquan; Du, Yingxun; Li, Kuanyi; Liu, Zhengwen; Jeppesen, Erik; Sondergaard, Martin |
| 刊名 | FRONTIERS IN ENVIRONMENTAL SCIENCE
 |
| 出版日期 | 2021 |
| 卷号 | 9 |
| 英文摘要 | The effectiveness of controlling nitrogen (N) to manage eutrophication of aquatic ecosystems remains debated. To understand the mechanisms behind phytoplankton growth in shallow lakes (resource and grazing effects) under contrasting N loading scenarios, we conducted a 70-days mesocosm experiment in summer. The mesocosms contain natural plankton communities deriving from a 10-cm layer of lake sediment and 450 L of lake water. We also added two juvenile crucian carp (Carassius carassius) in each mesocosm to simulate presence of the prevailing omni-benthivorous fish in subtropical lakes. Our results showed that N addition increased not only water N levels but also total phosphorus (TP) concentrations, which together elevated the phytoplankton biomass and caused strong dominance of cyanobacteria. Addition of N significantly lowered the herbivorous zooplankton to phytoplankton biomass ratio and promoted the phytoplankton yield per nutrient (Chl-a: TP or Chl-a: TN ratio), indicating that summer N addition likely also favored phytoplankton growth through reduced grazing by zooplankton. Accordingly, our study indicates that summer N loading may boost eutrophication via both changes in resource and grazing control in shallow lakes. Thus, alleviation of eutrophication in shallow eutrophic lakes requires a strategic approach to control both nutrients (N and P) appropriately. |
| 源URL | [http://159.226.73.51/handle/332005/20313]  |
| 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 | He, Hu,Chen, Kunquan,Du, Yingxun,et al. Increased Nitrogen Loading Boosts Summer Phytoplankton Growth by Alterations in Resource and Zooplankton Control: A Mesocosm Study[J]. FRONTIERS IN ENVIRONMENTAL SCIENCE,2021,9. |
| APA | He, Hu.,Chen, Kunquan.,Du, Yingxun.,Li, Kuanyi.,Liu, Zhengwen.,...&Sondergaard, Martin.(2021).Increased Nitrogen Loading Boosts Summer Phytoplankton Growth by Alterations in Resource and Zooplankton Control: A Mesocosm Study.FRONTIERS IN ENVIRONMENTAL SCIENCE,9. |
| MLA | He, Hu,et al."Increased Nitrogen Loading Boosts Summer Phytoplankton Growth by Alterations in Resource and Zooplankton Control: A Mesocosm Study".FRONTIERS IN ENVIRONMENTAL SCIENCE 9(2021). |
入库方式： OAI收割
来源：南京地理与湖泊研究所
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