Typhoon effects on DOC dynamics in a phosphate-limited reservoir

doi:10.3354/ame01423

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	Typhoon effects on DOC dynamics in a phosphate-limited reservoir
	Tseng, Yu-Fen 1; Hsu, Ting-Chang 2; Chen, Yi-Lung 2; Kao, Shuh-Ji 2; Wu, Jiunn-Tzong 3; Lu, Ji-Chen 2; Lai, Chao-Chen 1; Kuo, Hsiang-Yi 4; Lin, Chih-Hsien 1; Yamamoto, Yoshimasa 2
刊名	AQUATIC MICROBIAL ECOLOGY
	2010
卷号	60 期号:3 页码:247-260
关键词	Doc Heterotrophic Bacteria Phytoplankton Microbial Loop
ISSN号	0948-3055
DOI	10.3354/ame01423
文献子类	Article
英文摘要	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.
学科主题	Ecology ; Marine & Freshwater Biology ; Microbiology
URL标识	查看原文
语种	英语
WOS记录号	WOS:000280768400004
公开日期	2010-11-18
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/1807]
专题	海洋研究所_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
推荐引用方式 GB/T 7714	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.