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 Changjiang fresh water discharge upon ciliate community in the East China Sea was investigated during four summer cruises on board R/V Ocean Researcher I in 2003 and 2004. The abundance of oligotrich ciliate was 35.7 ~ 45.6 × 104 cells/m3, which was not significantly influenced by river runoff from a radial type at the initial stage of the reduction in fresh water discharge (2003) with higher population density in the Changjiang plume, to a random type in following year. The proportion of mixotrophic ciliates also increased from 9% to 38%, and cell sizes increased from 23.8 µm to 38.2 µm. We purpose that the larger mixotrophic ciliates survive better in an oligotrophic marine ecosystem than smaller, hetertrophic ciliates, and the shift to oligotrophic condition is a result of reduced fresh water from Changjiang. Therefore, we can say that when the fresh water discharge declines, the summer ciliate peak will disappear.
Key words : East China Sea, oligotrich ciliate, Changjiang plume,
mixotrophic ciliate, oligotrophic marine ecosystem.
| Identifer | oai:union.ndltd.org:TW/093NTOU5451017 |
| Date | January 2005 |
| Creators | Lan -Long You, 尤嵐龍 |
| 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 | 41 |
Page generated in 0.002 seconds