碩士 / 國立臺灣海洋大學 / 環境生物與漁業科學學系 / 93 / Abstract
The impact of Chanjiang fresh water discharge upon picoplankton and nanoplankton community in the East China Sea were investigated during four summer cruises on board R/V Ocean Researcher I in 2003 and 2004. When the river runoff declined, the nutrient and organic matter succeeded, and the bacteria decreased to 0.83-0.28×1012 cells m-3. The distribution patterns of bacteria changed from a radial type in the initial stage of fresh water reduction, with population density higher in the Changjiang plume, to a random type which was not controlled by Chanjiang fresh water in the rest of the study period. The abundance of Synechococcus maintained stable in a range between 5.23 and 8.23×1010 cells m-3 with no significant change. The pigmented nanoflagellates were a dominated component contributing 67-94% to the nanoflagellate community. The nanoflagellate abundance showed a decreasing trend from 2.23×106 cells m-3 to 0.13×106 cells m-3. We purpose that the abundance of hetertrophic nanoflagellate was under Top-Down Control, and pigmented nanoflagellate were controlled by nutrients and predators.
Key words: Bacteria、Synechococcus、Pigmented nanoflagellate、Hetertrophic nanoflagellate
| Identifer | oai:union.ndltd.org:TW/093NTOU5451023 |
| Date | January 2005 |
| Creators | Ting-Ting Shiu, 許婷婷 |
| Contributors | Kuo-Ping Chiang, 蔣國平 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 44 |
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