| Summary: | 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.
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