高雄港區及附近海域橈足類群聚之時空分佈

• Main Authors: Ding-Ding Chen, 陳定鼎
• Other Authors: Chang-tai Shih
• Format: Others
• Language: zh-TW
• Online Access: http://ndltd.ncl.edu.tw/handle/83310935896840248096

碩士 === 國立中山大學 === 海洋資源學系研究所 === 89 === The principal objectives of this research are to investigate seasonal and spatial variabilities of species composition and numerical abundance of the copepods in relation to environment factors in the Kaohsiung Harbor and it’s adjacent coastal waters, and compared the carbon 、 nitrogen and hydrogen contents of the animal. In all, 61 species of copepods belonging to 16 families were identified from the samples collected at six stations in the Kaohsiung Harbor. The mean numerical abundance of copepods was 5.3 ±4.8 ×10 5 inds/100m 3 . The dominant and frequent species were Parvocalanus crassirostris, Oithona dissimilis, Oithona brevicornis, Acrocalanus spp. and immature copepods (copepodite and nauplius), amounting to 91% of the total copepods catch. Among them, P. crassirostris was the most abundant and frequent species (contributed to 30% of the total catch). The numerical abundance of copepods exhibited seasonal and tidal variations, with higher abundance in spring and winter and during the high tide. The species composition of the copepods in the harbor was different from that of the local coastal water, with higher abundance and species number in the latter. From the monthly collections at a fixed station north of Kaohsiung Harbor, 42 species of copepods were identified and the mean abundance of copepods was 3.3 ±3.6 ×10 5 inds/100m 3 . The most dominant and frequent copepods was Parvocalanus. crassirostris, O. dissimilis, O. brevicornis, Acrocalanus spp., Euterpina acutifrons and immature copepods, contributing to 92% of the total numerical abundance of copepods. The abundance of copepods exhibited significant seasonal change at this station, with higher abundance in winter and summer and lower in spring. The carbon content and dry weight of copepod were not significantly different between harbor and coastal water, but copepod’s carbon content showed significant difference among body sizes. Copepod dry weight was significantly different among body sizes, but not seasons.