| Intra-habitat heterogeneity of microbial food web structure under the regime of eutrophication and sediment resuspension in the large subtropical shallow Lake Taihu, China | |
Wu, Qinglong L.; Chen, Yuwei; Xu, Kuidong ; Liu, Zhengwen; Hahn, Martin W.
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| 2007-05-01 | |
| 发表期刊 | HYDROBIOLOGIA
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| ISSN | 0018-8158 |
| 卷号 | 581页码:241-254 |
| 文章类型 | Article |
| 摘要 | Planktonic microbial community structure and classical food web were investigated in the large shallow eutrophic Lake Taihu (2338 km(2), mean depth 1.9 m) located in subtropical Southeast China. The water column of the lake was sampled biweekly at two sites located 22 km apart over a period of twelve month. Site 1 is under the regime of heavy eutrophication while Site 2 is governed by wind-driven sediment resuspension. Within-lake comparison indicates that phosphorus enrichment resulted in increased abundance of microbial components. However, the coupling between total phosphorus and abundance of microbial components was different between the two sites. Much stronger coupling was observed at Site 1 than at Site 2. The weak coupling at Site 2 was mainly caused by strong sediment resuspension, which limited growth of phytoplankton and, consequently, growth of bacterioplankton and other microbial components. High percentages of attached bacteria, which were strongly correlated with the biomass of phytoplankton, especially Microcystis spp., were found at Site 1 during summer and early autumn, but no such correlation was observed at Site 2. This potentially leads to differences in carbon flow through microbial food web at different locations. Overall, significant heterogeneity of microbial food web structure between the two sites was observed. Site-specific differences in nutrient enrichment (i.e. nitrogen and phosphorus) and sediment resuspension were identified as driving forces of the observed intra-habitat differences in food web structure.; Planktonic microbial community structure and classical food web were investigated in the large shallow eutrophic Lake Taihu (2338 km(2), mean depth 1.9 m) located in subtropical Southeast China. The water column of the lake was sampled biweekly at two sites located 22 km apart over a period of twelve month. Site 1 is under the regime of heavy eutrophication while Site 2 is governed by wind-driven sediment resuspension. Within-lake comparison indicates that phosphorus enrichment resulted in increased abundance of microbial components. However, the coupling between total phosphorus and abundance of microbial components was different between the two sites. Much stronger coupling was observed at Site 1 than at Site 2. The weak coupling at Site 2 was mainly caused by strong sediment resuspension, which limited growth of phytoplankton and, consequently, growth of bacterioplankton and other microbial components. High percentages of attached bacteria, which were strongly correlated with the biomass of phytoplankton, especially Microcystis spp., were found at Site 1 during summer and early autumn, but no such correlation was observed at Site 2. This potentially leads to differences in carbon flow through microbial food web at different locations. Overall, significant heterogeneity of microbial food web structure between the two sites was observed. Site-specific differences in nutrient enrichment (i.e. nitrogen and phosphorus) and sediment resuspension were identified as driving forces of the observed intra-habitat differences in food web structure. |
| 关键词 | Microbial Food Web Eutrophication Resuspension Shallow Lake Heterogeneity |
| 学科领域 | Marine & Freshwater Biology |
| DOI | 10.1007/s10750-006-0500-x |
| URL | 查看原文 |
| 收录类别 | SCI ; ISTP |
| 语种 | 英语 |
| WOS记录号 | WOS:000244992800026 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.qdio.ac.cn/handle/337002/6010 |
| 专题 | 海洋生物分类与系统演化实验室 |
| 作者单位 | 1.Chinese Acad Sci, Nanjing Inst Geog & Limnol, Nanjing 210008, Peoples R China 2.Austrian Acad Sci, Inst Limnol, A-5310 Mondsee, Austria 3.Chinese Acad Sci, Inst Oceanog, Qingdao 266071, Peoples R China 4.Jinan Univ, Inst Hydrobiol, Guangzhou 510632, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wu, Qinglong L.,Chen, Yuwei,Xu, Kuidong,et al. Intra-habitat heterogeneity of microbial food web structure under the regime of eutrophication and sediment resuspension in the large subtropical shallow Lake Taihu, China[J]. HYDROBIOLOGIA,2007,581:241-254. |
| APA | Wu, Qinglong L.,Chen, Yuwei,Xu, Kuidong,Liu, Zhengwen,&Hahn, Martin W..(2007).Intra-habitat heterogeneity of microbial food web structure under the regime of eutrophication and sediment resuspension in the large subtropical shallow Lake Taihu, China.HYDROBIOLOGIA,581,241-254. |
| MLA | Wu, Qinglong L.,et al."Intra-habitat heterogeneity of microbial food web structure under the regime of eutrophication and sediment resuspension in the large subtropical shallow Lake Taihu, China".HYDROBIOLOGIA 581(2007):241-254. |
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