National Taiwan Ocean University Institutional Repository:Item 987654321/25453
English  |  正體中文  |  简体中文  |  全文笔数/总笔数 : 27287/39131
造访人次 : 2442742      在线人数 : 39
RC Version 4.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
搜寻范围 进阶搜寻


题名: Phytoplankton and bacterioplankton biomass, production and turnover in a semi-enclosed embayment with spring tide induced upwelling
作者: Chung-Chi Chen;Fuh-Kwo Shiah;Hung-Jen Lee;Kuo-Yuan Li;Pei-Jie Meng;Shui-Ji Kao;Yu-Fang Tseng;Chia-Lu Chung
贡献者: NTOU:Department of Marine Environmental Informatics
关键词: Dissolved inorganic nutrients;Chlorophyll;Bacterioplankton;POC;C-limitation;Upwelling;Tidal cycle;Taiwan
日期: 2005
上传时间: 2011-10-20T08:23:16Z
出版者: Marine Ecology Progress Series
摘要: ABSTRACT:We examined the short time scale (i.e. hours to days) responses of phytoplankton and heterotrophic bacteria to a spring tide-driven upwelling, which is different from classical wind-driven systems, in southern Taiwan in a semi-enclosed embayment. Results showed that nitrate concentrations (NO3–, <0.15 to 10.2 µM) correlated negatively with temperature (ca. 16 to 26°C). Estimated NO3– flux upwelled from >70 m was ~60 mmol N m–2 h–1 with <1% of it utilized by phytoplankton. Chlorophyll a concentrations doubled from 0.07 to 0.16 µg l–1 in the 9 h after the upwelling to maximal concentrations of <0.30 µg l–1. Euphotic zone integrated primary production (IPP, ca. 118 to 389 mgC m–2 d–1), and algal turnover rate (Pμ, ca. 0.27 to 0.76d–1) responded to the upwelling ~5 h earlier than chlorophyll. The observed uncoupling between upwelled nutrients and the low chlorophyll phenomenon might be due to quick tidal mixing and shorter residence time of the water mass (<1 d) within the bay, in comparison to the algal turnover time (1.3 to 3.7d). Euphotic zone integrated bacterial production (17to 28 mgC m–2 d–1) and bacterial turnover rate (0.6 to 0.8 d–1) were positively correlated with IPP, Pμ and depth integrated particulate organic carbon (ca. 540 to 6575 mgC m–2) concentrations, suggesting a high possibility of ‘bottom-up’ (organic substrate supply) control. This was confirmed by the results of 3 enrichment experiments showing that bacterial growth was C limited. Our study provides mechanistic information regarding the magnitude of the interaction between physical, chemical and biological processes, since the time scale adopted by this study encompasses the turnover times of auto- and heterotrophic plankton.
關聯: v304, pp.91-100
显示于类别:[海洋環境資訊系] 期刊論文


档案 描述 大小格式浏览次数



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 ©   - 回馈