A Study on Community Structure of Copepods in I-Lan Bay of Northeastern Taiwan
| Autor: | Peng-Kai Huang, 黃彭愷 |
|---|---|
| Rok vydání: | 2006 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 94 The northwest waters off Taiwan are one of the most productive neritic fishing grounds associated with favorable environment for marine community. Copepods have been generally considered to be the keystone species in marine environment. This study is to investigate the community structure of copepods in this region. Eight cruises (CR1186, CR1204, CR1224, CR1250, CR1278, CR1297, CR1306 and CR1320) and 68 plankton net samplings with CTD observation were conducted from Ocean Researcher No.2 during 2004 to 2005. In total, 159 species of copepods belonging to 62 genera and 28 families were identified in this study. MDS analysis divided the sampling stations into 3 groups: outer, middle, and inner. Outer group had the lowest mean abundance of copepods but the highest Shannon-Weaver species diversity and evenness index. Conversely, the highest mean abundance was found in middle group and the lowest diversity and evenness were found in inner group. The result of ANOSIM analysis showed that the typical species of tropical copepods, such as Oncaea venusta and Undinula vulgaris, were highly abundant in outer group. While, the copepods of Temora turbinata, Canthocalanus pauper, and Paracalanus aculeatus were highly abundant in middle group. Than, the typical coastal copepods, such as Corycaeus(Onchocorycaeus) agilis and C. (Ditrichocorycaeus) dahli were highly abundant in inner group. These results suggest that the distribution, abundance, and species composition of copepods are associated with different water masses in the waters off northeastern Taiwan. Key words: copepods, MDS, ANOSIM, community structure, I-Lan Bay |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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