ii
Abstract
Tapeng Bay has distinct dry (October to May) and wet (June to
September) seasons. The salinity was 33‰ in the dry season, but may as
low as 21‰ during the wet season. The yearly average temperature,
salinity and chlorophyll a of Tapeng Bay are 26.9 ¢J, 29.7 ‰ and 2.24 £gg/L
respectively. Thirty-six species of copepods belonging 18 families and
three orders plus 16 unidenitified species were found in the materials of this
study. The average abundance of copepods was 5.8 ¡Ó8.4 x10
5
ind./100m
3
.
The nine most dominant species were Acartia tsuensis , Paracalanidae
(copepodites), Acartiidae (copepodites), Parvocalanus crassi rostris ,
Oithonidae (copepodites), Oithona dissimilis , n auplius, Acrocalanus indicus
and Zausodes spp., contibuting to 81% of the total copepods. Majority of
the dominant species exhibited clear seasonal changes in abundance, varying
positively with temperature. Acartia tsuensis and Acartiidae were
dominant species in station N in the wet season, but other dominant species
had higher abundance in the dry season. Aurelia aurita (Cnidaria,
Scyphozoa) which was dominant in the dry season, may play the role of a
keystone species at stations S and C. Species composition was different
among stations. Fish-pond species was dominant at station S, copepodite
and nauplii, and neritic species at station N. The abundance of copepods
may be influenced by tidal action. When inlet species abundance is higher
than neritic species, total copepod abundance at high tide is lower than at
low tide, but the trend is reverse for neritic species. The grazing impact of
copepods on phytoplankton was 0.04 to 40.36 % per day.
| Identifer | oai:union.ndltd.org:NSYSU/oai:NSYSU:etd-0816101-165709 |
| Date | 16 August 2001 |
| Creators | Chung, Chia-Lu |
| Contributors | Chiang-Shiu Hwang, Shing-Ping Yeh, Chang-Tai Shih, Wen-Tseng Lo |
| Publisher | NSYSU |
| Source Sets | NSYSU Electronic Thesis and Dissertation Archive |
| Language | Cholon |
| Detected Language | English |
| Type | text |
| Format | application/pdf |
| Source | http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0816101-165709 |
| Rights | unrestricted, Copyright information available at source archive |
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