| Impact of Arenicola marina (Polychaeta) on the microbial assemblages and meiobenthos in a marine intertidal flat | |
Lei, Yanli1,2 ; Stumm, Karen3; Volkenborn, Nils; Wickham, Stephen A.2; Berninger, Ulrike-G.2
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| 2010-06-01 | |
| 发表期刊 | MARINE BIOLOGY
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| 卷号 | 157期号:6页码:1271-1282 |
| 文章类型 | Article |
| 摘要 | The benthic microbial food web can be responsible for a large proportion of benthic carbon cycling yet there are few data on the trophic interactions between this food web and macrobenthos. A large-scale field experiment was conducted to investigate effects of eliminating the polychaete Arenicola marina on benthic microbes (prokaryotes, heterotrophic and autotrophic protists) and metazoan meiofauna in a marine intertidal flat of the North Sea, Germany. Over a period of 2 years, quantity and composition of micro- and meiobenthos from unmanipulated sites were compared to those from sites deplete of lugworms. These grazer treatments were cross-classified with different sediment characteristics (low- and mid-intertidal areas). Lugworm removal resulted in an initial increase in abundance of prokaryotes and nanoflagellates, which became less pronounced in the second year. Ciliates were not affected quantitatively, but in the absence of lugworms, diversity and the proportion of carnivorous forms increased. Meiobenthos (nematodes, ostracods and copepods) were affected only moderately. The observed changes are probably due to a combination of release from grazing/predation pressure, changes in the species composition of higher trophic levels (namely large polychaetes) and altered environmental conditions (such as depth of the oxygenated layer and sediment grain size). Spatial differences between sites of different tidal exposure/grain size appeared to be as large as temporal differences during the 2 years following the manipulation of the system. We conclude that in intertidal sediments, indirect effects due to habitat transformation are as important as direct biological interactions (grazing pressure and competition) for the dynamics of the benthic microbial food web. |
| DOI | 10.1007/s00227-010-1407-7 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000277643100010 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 版本 | 出版稿 |
| 条目标识符 | http://ir.qdio.ac.cn/handle/337002/32708 |
| 专题 | 海洋生物分类与系统演化实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China 2.Salzburg Univ, Dept Organism Biol, A-5020 Salzburg, Austria 3.Alfred Wegener Inst Polar & Marine Res, D-27570 Bremerhaven, Germany |
| 第一作者单位 | 中国科学院海洋研究所 |
| 推荐引用方式 GB/T 7714 | Lei, Yanli,Stumm, Karen,Volkenborn, Nils,et al. Impact of Arenicola marina (Polychaeta) on the microbial assemblages and meiobenthos in a marine intertidal flat[J]. MARINE BIOLOGY,2010,157(6):1271-1282. |
| APA | Lei, Yanli,Stumm, Karen,Volkenborn, Nils,Wickham, Stephen A.,&Berninger, Ulrike-G..(2010).Impact of Arenicola marina (Polychaeta) on the microbial assemblages and meiobenthos in a marine intertidal flat.MARINE BIOLOGY,157(6),1271-1282. |
| MLA | Lei, Yanli,et al."Impact of Arenicola marina (Polychaeta) on the microbial assemblages and meiobenthos in a marine intertidal flat".MARINE BIOLOGY 157.6(2010):1271-1282. |
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