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| Comparisons of picophytoplankton abundance, size, and fluorescence between summer and winter in northern South China Sea | |
| Chen, Bingzhang1,2; Wang, Lei2; Song, Shuqun1,3; Huang, Bangqin2; Sun, Jun4; Liu, Hongbin1 | |
| 2011-09-15 | |
| 发表期刊 | CONTINENTAL SHELF RESEARCH
 |
| ISSN | 0278-4343 |
| 卷号 | 31期号:14页码:1527-1540 |
| 文章类型 | Article |
| 摘要 | The abundance, size, and fluorescence of picophytoplankton cells were investigated during the summer (July-August of 2009) and winter (January of 2010) extending from near-shore coastal waters to oligotrophic open waters in northern South China Sea, under the influence of contrasting seasonal monsoons. We found that the median abundance of Prochlorococcus averaged over top 150 m decreased nearly 10 times in the winter compared to the summer in the whole survey area, while median abundance of Synechococcus and picoeukaryotes increased 2.6 and 2.4 folds, respectively. Vertical abundance profiles of picoeukaryotes usually formed a subsurface maximum during the summer with the depth of maximal abundances tracking the depth of nutricline, whereas their vertical distributions were more uniform during the winter. Size and cellular fluorescence of Prochlorococcus and Synechococcus usually increased with depth in the summer, while the size of picoeukaryotes was smallest at the depth of maximal abundances. Size, cellular fluorescence, and chlorophyll-to-carbon ratio of Prochlorococcus and Synechococcus in surface waters were generally higher in the winter than in the summer and onshore than offshore, probably resulting from different temperature, nutrient, and light environments as well as different ecotype compositions. Prochlorococcus cells were most abundant in warm and oligotrophic environments, while the abundance of Synechococcus and picoeukaryotes was the highest in waters with intermediate chlorophyll and nutrient concentrations. The distributional patterns of picophytoplankton groups are consistent with their specific physiology documented in previous studies and can be possibly predicted by environmental physical and chemical variables. (C) 2011 Elsevier Ltd. All rights reserved.; The abundance, size, and fluorescence of picophytoplankton cells were investigated during the summer (July-August of 2009) and winter (January of 2010) extending from near-shore coastal waters to oligotrophic open waters in northern South China Sea, under the influence of contrasting seasonal monsoons. We found that the median abundance of Prochlorococcus averaged over top 150 m decreased nearly 10 times in the winter compared to the summer in the whole survey area, while median abundance of Synechococcus and picoeukaryotes increased 2.6 and 2.4 folds, respectively. Vertical abundance profiles of picoeukaryotes usually formed a subsurface maximum during the summer with the depth of maximal abundances tracking the depth of nutricline, whereas their vertical distributions were more uniform during the winter. Size and cellular fluorescence of Prochlorococcus and Synechococcus usually increased with depth in the summer, while the size of picoeukaryotes was smallest at the depth of maximal abundances. Size, cellular fluorescence, and chlorophyll-to-carbon ratio of Prochlorococcus and Synechococcus in surface waters were generally higher in the winter than in the summer and onshore than offshore, probably resulting from different temperature, nutrient, and light environments as well as different ecotype compositions. Prochlorococcus cells were most abundant in warm and oligotrophic environments, while the abundance of Synechococcus and picoeukaryotes was the highest in waters with intermediate chlorophyll and nutrient concentrations. The distributional patterns of picophytoplankton groups are consistent with their specific physiology documented in previous studies and can be possibly predicted by environmental physical and chemical variables. (C) 2011 Elsevier Ltd. All rights reserved. |
| 关键词 | Picophytoplankton Abundance Size Fluorescence South China Sea Seasonal Comparison |
| 学科领域 | Oceanography |
| DOI | 10.1016/j.csr.2011.06.018 |
| URL | 查看原文 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000295438900014 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.qdio.ac.cn/handle/337002/11651 |
| 专题 | 海洋生态与环境科学重点实验室 |
| 作者单位 | 1.Hong Kong Univ Sci & Technol, Div Life Sci, Kowloon, Hong Kong, Peoples R China 2.Environm Sci Res Ctr, State Key Lab Marine Environm Sci, Xiamen, Peoples R China 3.Chinese Acad Sci, Key Lab Marine Ecol & Environm Sci, Inst Oceanol, Qingdao, Peoples R China 4.Tianjin Univ Sci & Technol, Coll Marine Sci & Engn, Tianjin, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, Bingzhang,Wang, Lei,Song, Shuqun,et al. Comparisons of picophytoplankton abundance, size, and fluorescence between summer and winter in northern South China Sea[J]. CONTINENTAL SHELF RESEARCH,2011,31(14):1527-1540. |
| APA | Chen, Bingzhang,Wang, Lei,Song, Shuqun,Huang, Bangqin,Sun, Jun,&Liu, Hongbin.(2011).Comparisons of picophytoplankton abundance, size, and fluorescence between summer and winter in northern South China Sea.CONTINENTAL SHELF RESEARCH,31(14),1527-1540. |
| MLA | Chen, Bingzhang,et al."Comparisons of picophytoplankton abundance, size, and fluorescence between summer and winter in northern South China Sea".CONTINENTAL SHELF RESEARCH 31.14(2011):1527-1540. |
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