碩士 / 國立海洋大學 / 海洋生物研究所 / 91 / The oceanic survies were conducted to southern East China Sea shelf region during July 2002 with the purpose of investigating spatial distribution of marine dinoflagellates. Based on species composition and abundance information from microscope examination, dorminant species wewe classified into 3 groups. Group Ⅰ is the ‘Oceanic group’,which included Ceratium teres, Ceratocorys horrida, Ceratium intermedium-like spp. and Pyrocystis spp. They all had a similar trend in distribution in early and late July, with declining abundance from oceanic to coastal waters. Group Ⅱ is the ‘Coastal-upwelling group’, which included Ceratium furca, Ceratium fusus, Ceratium tripos-like spp., spherical peridinioids, Prorocentrum micans, Protoperidinium oceanicum-like spp. and Protoperidinium nipponicum-like spp. Both the abundance and the species numbers of this group accounted for about a half of all dinoflagellates recorded in the study area. In both cruises in July, the abundance of this group was higher in coastal and upwelling waters compared to those at other stations. Group Ⅲ is the ‘trendless group’, which included Oxytoxum reticulatum, Dinophysis miles and a number of unarmored species . These species showed no consistent trend in distribution between the cruises in early and late July. The regressions between dinoflagellate abundance and marine environmental factors, such as mean water temperature, mean salinity, weighted mean of NO3- and PO43- concentrations, and organic carbon concerntrations, showed a significant positive relationship between ‘Oceanic group’ abundance and salinity. In addition, a significant negative relationship was found between ‘trendless group’ abundance and POC. The in situ growth rates of dinoflagellates estimated via the method of frequence of dividing cell method were 0.08 ~ 0.34 day-1 for Cetatium teres, 0.15 ~ 0.32 day-1 for Cetatium furca, 0 ~ 0.01 day-1 for Prorocentrum micans, and 0 ~ 0.04 day-1 for Prorocentrum cf. scutellum. These values had no clear relationship to cell abundance , indicating predators.
| Identifer | oai:union.ndltd.org:TW/091NTOU0270012 |
| Date | January 2003 |
| Creators | Chou Hsiao-Chen, 周小貞 |
| Contributors | Chang Jeng, 張正 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 65 |
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