English  |  正體中文  |  简体中文  |  Items with full text/Total items : 26988/38789
Visitors : 2346667      Online Users : 28
RC Version 4.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
Scope Adv. Search
LoginUploadHelpAboutAdminister

Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/41026

Title: Typhoon effects on DOC dynamics in a phosphate-limited reservoir
Authors: Fuh-Kwo Shiah
Yu-Fen Tseng
Ting-Chang Hsu
Yi-Lung Chen
Shuh-Ji Kao
Jiunn-Tzong Wu
Ji-Chen Lu
Chao-Chen Lai
Hsiang-Yi Kuo
Chih-Hsien Lin
Yoshimasa Yamamoto
Tian Xiao
Contributors: 國立臺灣海洋大學:海洋環境化學與生態研究所
Keywords: Microbial loop
DOC
Heterotrophic bacteria
Phytoplankton
Date: 2010-07
Issue Date: 2017-02-08T02:29:36Z
Publisher: Aquatic Microbial Ecology
Abstract: Abstract: 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 μM C) and its rate of change (–13 to 24 μM 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.
Relation: 60(3)
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/41026
Appears in Collections:[海洋環境與生態研究所] 期刊論文

Files in This Item:

File Description SizeFormat
index.html0KbHTML50View/Open


All items in NTOUR are protected by copyright, with all rights reserved.

 


著作權政策宣告: 本網站之內容為國立臺灣海洋大學所收錄之機構典藏,無償提供學術研究與公眾教育等公益性使用,請合理使用本網站之內容,以尊重著作權人之權益。
網站維護: 海大圖資處 圖書系統組
DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - Feedback