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| Temporal and spatial variability in nitrogen uptake kinetics during harmful dinoflagellate blooms in the East China Sea | |
| Li, Ji1; Glibert, Patricia M.1; Zhou, Mingjiang2 | |
| 2010-09-01 | |
| 发表期刊 | HARMFUL ALGAE
 |
| ISSN | 1568-9883 |
| 卷号 | 9期号:6页码:531-539 |
| 文章类型 | Article |
| 摘要 | Temporal and spatial variability in the kinetic parameters of uptake of nitrate (NO(3)(-)), ammonium (NH(4)(+)), urea, and glycine was measured during dinoflagellate blooms in Changjiang River estuary and East China Sea coast, 2005. Karenia mikimotoi was the dominant species in the early stage of the blooms and was succeeded by Prorocentrum donghaiense. The uptake of nitrogen (N) was determined using (15)N tracer techniques. The results of comparison kinetic parameters with ambient nutrients confirmed that different N forms were preferentially taken up during different stages of the bloom. NO(3)(-) (V(max) 0.044 h(-1); K(s) 60.8 mu M-N) was an important N source before it was depleted. NH(4)(+) (V(max) 0.049 h(-1); K(s) 2.15 mu M-N) was generally the preferred N. Between the 2 organic N sources, urea was more preferred when K. mikimotoi dominated the bloom (V(max) 0.020 h(-1); K(s) 1.35 mu M-N) and glycine, considered as a dominant amino acid, was more preferred when P. donghaiense dominated the bloom (V(max) 0.025 h(-1); K(s) 1.76 mu M-N). The change of N uptake preference by the bloom-forming algae was also related to the variation in ambient N concentrations. Published by Elsevier B.V.; Temporal and spatial variability in the kinetic parameters of uptake of nitrate (NO3-), ammonium (NH4+), urea, and glycine was measured during dinoflagellate blooms in Changjiang River estuary and East China Sea coast, 2005. Karenia mikimotoi was the dominant species in the early stage of the blooms and was succeeded by Prorocentrum donghaiense. The uptake of nitrogen (N) was determined using N-15 tracer techniques. The results of comparison kinetic parameters with ambient nutrients confirmed that different N forms were preferentially taken up during different stages of the bloom. NO3- (V-max 0.044 h(-1); K-s 60.8 mu M-N) was an important N source before it was depleted. NH4+ (V-max 0.049 h(-1); K-s 2.15 mu M-N) was generally the preferred N. Between the 2 organic N sources, urea was more preferred when K. mikimotoi dominated the bloom (V-max 0.020 h(-1); K-s 1.35 mu M-N) and glycine, considered as a dominant amino acid, was more preferred when P. donghaiense dominated the bloom (V-max 0.025 h(-1); K-s 1.76 mu M-N). The change of N uptake preference by the bloom-forming algae was also related to the variation in ambient N concentrations. Published by Elsevier B.V. |
| 关键词 | East China Sea Harmful Algal Blooms Karenia Mikimotoi Nitrogen Uptake Kinetics Prorocentrum Donghaiense |
| 学科领域 | Marine & Freshwater Biology |
| DOI | 10.1016/j.hal.2010.03.007 |
| URL | 查看原文 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000281999300001 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.qdio.ac.cn/handle/337002/5460 |
| 专题 | 海洋生态与环境科学重点实验室 |
| 作者单位 | 1.Univ Maryland, Ctr Environm Sci, Horn Point Lab, Cambridge, MD 21613 USA 2.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Ji,Glibert, Patricia M.,Zhou, Mingjiang. Temporal and spatial variability in nitrogen uptake kinetics during harmful dinoflagellate blooms in the East China Sea[J]. HARMFUL ALGAE,2010,9(6):531-539. |
| APA | Li, Ji,Glibert, Patricia M.,&Zhou, Mingjiang.(2010).Temporal and spatial variability in nitrogen uptake kinetics during harmful dinoflagellate blooms in the East China Sea.HARMFUL ALGAE,9(6),531-539. |
| MLA | Li, Ji,et al."Temporal and spatial variability in nitrogen uptake kinetics during harmful dinoflagellate blooms in the East China Sea".HARMFUL ALGAE 9.6(2010):531-539. |
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