Abstract
The spatial and temporal changes in species composition and
abundance of pteropods in relation to hydrography in the waters around
Taiwan were investigated during the period from February 2003 to
August 2004. In total, 26 species of pteropods belonging to 11 genera and
4 families were identified, with mean abundance of 75.87¡Ó11.39
inds/100m³, The abundance of pteropods exhibited noticeable seasonal
changes, higher in summer and lower in winter. Higher abundance were
always found in Taiwan Strait in our study area. The six most dominant
species were Limacina inflata, Creseis acicula, C. clava, C. virgula,
L. bulimoides and C. virgula var. conica in descending order. These
species totally accounted for more than 88¢H of the total pteropods. The
composition of dominant species were similar among different seasons and hydrographic areas, but the order of dominance was different.
Different dominant species showed different seasonal distribution
patterns.
The species number of pteropods in the waters around Taiwan
showed no difference among seasons. There were 21 species found in
winter, 22 species in spring and summer. The species number was higher
in the waters of eastern Taiwan. The diversity index of pteropods in
summer was significantly higher than that in spring and winter.
The total abundance, species number, and diversity index of
pteropods were significantly positively correlated to water temperature;
only the species number was significantly positively correlated to salinity.
The abundance of the six most dominant species showed different
correlations with water temperature and salinity. The abundance of
Creseis clava and C. virgula were significantly positively correlated with
water temperature, but Limacina. bulimoides was negatively correlated.
The abundance of L. inflata and L. bulimoides displayed significant
positive correlation with salinity, but C. clava displayed negative
correlation.
| Identifer | oai:union.ndltd.org:NSYSU/oai:NSYSU:etd-0716106-200857 |
| Date | 16 July 2006 |
| Creators | Chen, Yung-Chih |
| Contributors | Chang-Tai Shih, Wen-Tseng Lo, Meng-Hsien Chen |
| 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-0716106-200857 |
| Rights | unrestricted, Copyright information available at source archive |
Page generated in 0.0015 seconds