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- W2040789693 abstract "MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout the JournalEditorsTheme Sections MEPS 304:91-100 (2005) - doi:10.3354/meps304091 Phytoplankton and bacterioplankton biomass, production and turnover in a semi-enclosed embayment with spring tide induced upwelling Chung-Chi Chen1,*, Fuh-Kwo Shiah2, Hung-Jen Lee3, Kuo-Yuan Li4, Pei-Jie Meng3,Shui-Ji Kao2, Yu-Fang Tseng4, Chia-Lu Chung4 1Department of Life Science, National Taiwan Normal University, Taipei 11677, Taiwan2Research Center for Environment Changes, Academia Sinica, NanKang, Taipei 115, Taiwan3National Museum of Marine Biology & Aquarium, Pingtung 944, Taiwan4Institute of Oceanography, National Taiwan University, Taipei 10617, Taiwan *Email: ccchen@ntnu.edu.tw 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 m2 h1 with <1% of it utilized by phytoplankton. Chlorophyll a concentrations doubled from 0.07 to 0.16 µg l1 in the 9 h after the upwelling to maximal concentrations of <0.30 µg l1. Euphotic zone integrated primary production (IPP, ca. 118 to 389 mgC m2 d1), and algal turnover rate (Pμ, ca. 0.27 to 0.76d1) 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 m2 d1) and bacterial turnover rate (0.6 to 0.8 d1) were positively correlated with IPP, Pμ and depth integrated particulate organic carbon (ca. 540 to 6575 mgC m2) 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. KEY WORDS: Dissolved inorganic nutrients · Chlorophyll · Bacterioplankton · POC · C-limitation · Upwelling · Tidal cycle · Taiwan Full text in pdf format PreviousNextExport citation RSS - Facebook - Tweet - linkedIn Cited by Published in MEPS Vol. 304. Online publication date: December 08, 2005 Print ISSN: 0171-8630; Online ISSN: 1616-1599 Copyright © 2005 Inter-Research." @default.
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- W2040789693 title "Phytoplankton and bacterioplankton biomass, production and turnover in a semi-enclosed embayment with spring tide induced upwelling" @default.
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