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Typhoon effects on DOC dynamics in a phosphate-limited reservoir
Tseng, Yu-Fen1; Hsu, Ting-Chang2; Chen, Yi-Lung2; Kao, Shuh-Ji2; Wu, Jiunn-Tzong3; Lu, Ji-Chen2; Lai, Chao-Chen1; Kuo, Hsiang-Yi4; Lin, Chih-Hsien1; Yamamoto, Yoshimasa2; Xiao, Tian5; Shiah, Fuh-Kwo1,2,3; Shiah, FK, Natl Taiwan Univ, Inst Oceanog, Taipei 10764, Taiwan
2010
发表期刊AQUATIC MICROBIAL ECOLOGY
ISSN0948-3055
卷号60期号:3页码:247-260
文章类型Article
摘要To explore typhoon effects on dissolved organic carbon (DOC) dynamics, field investigations (tributary and dam site) and laboratory experiments (bioassay and DOC consumption) were conducted in a subtropical reservoir. A tributary survey indicated that after typhoon disruption, upstream areas were the sources of phosphate (P) but not DOC for the dam site located downstream. Bioassay experiments verified P-limitation on bacteria and phytoplankton during summer stratification, and bacteria showed a faster response than algae to added P. Experiments indicated that DOC consumption was determined by the availability of P. The 4 yr typhoon period (June-September) data of the dam site denoted that DOC concentration (27 to 270 mu M C) and its rate of change (-13 to 24 mu M C d(-1)) varied more dramatically in the weak (2006 and 2007) than in the strong (2004 and 2005) typhoon years. The negative correlation of DOC with the ratio of bacterial production (BP) to primary production (PP) in the euphotic zone (0 to 10 m) signified the interactive effects of auto- and heterotrophic processes on DOC variation. In the aphotic zone, the variation of DOC could be ascribed to the change of BP, which showed a positive correlation with P concentrations. This study documents that DOC concentration in the studied system varied at multiple time scales. Such variation can be explained by the decoupling between BP and PP, which is believed to be a function of the limiting nutrient's availability. More importantly, this study suggests that the P supply introduced by strong typhoons might have substantiated a tighter coupling between BP and PP, so that the amplitude of DOC oscillation during the summer period was effectively reduced.; To explore typhoon effects on dissolved organic carbon (DOC) dynamics, field investigations (tributary and dam site) and laboratory experiments (bioassay and DOC consumption) were conducted in a subtropical reservoir. A tributary survey indicated that after typhoon disruption, upstream areas were the sources of phosphate (P) but not DOC for the dam site located downstream. Bioassay experiments verified P-limitation on bacteria and phytoplankton during summer stratification, and bacteria showed a faster response than algae to added P. Experiments indicated that DOC consumption was determined by the availability of P. The 4 yr typhoon period (June-September) data of the dam site denoted that DOC concentration (27 to 270 mu M C) and its rate of change (-13 to 24 mu M C d(-1)) varied more dramatically in the weak (2006 and 2007) than in the strong (2004 and 2005) typhoon years. The negative correlation of DOC with the ratio of bacterial production (BP) to primary production (PP) in the euphotic zone (0 to 10 m) signified the interactive effects of auto- and heterotrophic processes on DOC variation. In the aphotic zone, the variation of DOC could be ascribed to the change of BP, which showed a positive correlation with P concentrations. This study documents that DOC concentration in the studied system varied at multiple time scales. Such variation can be explained by the decoupling between BP and PP, which is believed to be a function of the limiting nutrient's availability. More importantly, this study suggests that the P supply introduced by strong typhoons might have substantiated a tighter coupling between BP and PP, so that the amplitude of DOC oscillation during the summer period was effectively reduced.
关键词Doc Heterotrophic Bacteria Phytoplankton Microbial Loop
学科领域Ecology ; Marine & Freshwater Biology ; Microbiology
DOI10.3354/ame01423
URL查看原文
收录类别SCI
语种英语
WOS记录号WOS:000280768400004
引用统计
被引频次:17[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.qdio.ac.cn/handle/337002/1806
专题海洋生态与环境科学重点实验室
通讯作者Shiah, FK, Natl Taiwan Univ, Inst Oceanog, Taipei 10764, Taiwan
作者单位1.Natl Taiwan Univ, Inst Oceanog, Taipei 10764, Taiwan
2.Acad Sinica, Res Ctr Environm Changes, Taipei 115, Taiwan
3.Natl Taiwan Ocean Univ, Inst Marine Chem & Ecol, Keelong, Taiwan
4.Acad Sinica, Res Ctr Biodivers, Taipei 115, Taiwan
5.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Ecol & Environm Sci, Qingdao, Peoples R China
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Tseng, Yu-Fen,Hsu, Ting-Chang,Chen, Yi-Lung,et al. Typhoon effects on DOC dynamics in a phosphate-limited reservoir[J]. AQUATIC MICROBIAL ECOLOGY,2010,60(3):247-260.
APA Tseng, Yu-Fen.,Hsu, Ting-Chang.,Chen, Yi-Lung.,Kao, Shuh-Ji.,Wu, Jiunn-Tzong.,...&Shiah, FK, Natl Taiwan Univ, Inst Oceanog, Taipei 10764, Taiwan.(2010).Typhoon effects on DOC dynamics in a phosphate-limited reservoir.AQUATIC MICROBIAL ECOLOGY,60(3),247-260.
MLA Tseng, Yu-Fen,et al."Typhoon effects on DOC dynamics in a phosphate-limited reservoir".AQUATIC MICROBIAL ECOLOGY 60.3(2010):247-260.
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