Effects of nutrient load on microbial activities within a seagrass-dominated ecosystem: Implications of changes in seagrass blue carbon
文献类型：期刊论文
| 作者 | Liu, SL; Jiang, ZJ; Wu, YC; Zhang, JP; Arbi, I; Ye, F; Huang, XP; Macreadie, PI |
| 刊名 | MARINE POLLUTION BULLETIN
 |
| 出版日期 | 2017 |
| 卷号 | 117期号:1-2页码:214-221 |
| 关键词 | Seagrass bed Sediment organic carbon Extracellular enzymes activities PIFA Microbial community structure delta C-13 |
| 通讯作者 | xphuang@scsio.ac.cn |
| 中文摘要 | Nutrient loading is a leading cause of global seagrass decline, triggering shifts from seagrass-to macroalgal-dominance. Within seagrass meadows of Xincun Bay (South China Sea), we found that nutrient loading (due to fish farming) increased sediment microbial biomass and extracellular enzyme activity associated with carbon cyding (polyphenol oxidase, invertase and cellulase), with a corresponding decrease in percent sediment organic carbon (SOC), suggesting that nutrients primed microorganism and stimulated SOC remineralization. Surpisingly, however, the relative contribution of seagrass-derived carbon to bacteria (delta C-13(bacteria)) increased with nutrient loading, despite popular theory being that microbes switch to consuming macroalgae which are assumed to provide a more labile carbon source. Organic carbon sources of fungi were unaffected by nutrient loading. Overall, this study suggests that nutrient loading changes the relative contribution of seagrass and algal sources to SOC pools, boosting sediment microbial biomass and extracellular enzyme activity, thereby possibly changing seagrass blue carbon. (C) 2017 Elsevier Ltd. All rights reserved. |
| 源URL | [http://ir.scsio.ac.cn/handle/344004/16264]  |
| 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 | Liu, SL,Jiang, ZJ,Wu, YC,et al. Effects of nutrient load on microbial activities within a seagrass-dominated ecosystem: Implications of changes in seagrass blue carbon[J]. MARINE POLLUTION BULLETIN,2017,117(1-2):214-221. |
| APA | Liu, SL.,Jiang, ZJ.,Wu, YC.,Zhang, JP.,Arbi, I.,...&Macreadie, PI.(2017).Effects of nutrient load on microbial activities within a seagrass-dominated ecosystem: Implications of changes in seagrass blue carbon.MARINE POLLUTION BULLETIN,117(1-2),214-221. |
| MLA | Liu, SL,et al."Effects of nutrient load on microbial activities within a seagrass-dominated ecosystem: Implications of changes in seagrass blue carbon".MARINE POLLUTION BULLETIN 117.1-2(2017):214-221. |
入库方式： OAI收割
来源：南海海洋研究所
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