碩士 / 國立高雄海洋科技大學 / 漁業生產與管理研究所 / 97 / The diversity and dominant of trash fish species of bull trawlers operated at the night in the waters off Lin-Yuan, southwestern Taiwan were examined based on the species composition of samples taken from October 2006 to September 2007. In total, 62 species from 28 families and 42 genera were obtained for fish; 6 species from 6 families and 6 genera were for crustacean; 5 species from 4 families and 4 genera were for cephalopods. The myctophids (Benthosema pterotum) was the most dominant species. There was no significant difference at species composition of trash fish for different lunar phase. The multivariate analyses based on the cluster and nonparametric multi-dimensional scaling could identify two groups roughly corresponding to “spring-summer” and “fall-winter” seasons. Species dominance was higher for fall and winter, but was lower for spring to summer. Species diversity was higher for spring and summer, but was lower for fall to winter.
| Identifer | oai:union.ndltd.org:TW/097NKIM8451001 |
| Date | January 2009 |
| Creators | Yen Lung-Hua, 顏隆華 |
| Contributors | Chiou Wann-Duen, 邱萬敦 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 82 |
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