This study investigates the distribution in species composition and abundance of pteropods in relation to temperature, salinity, and water masses in the waters of southern Taiwan from February 2004 to October 2005. In total, 25 pteropod species belonging to 13 genera and 6 families were recognized. The mean abundance of pteropods in the study area was 77.3 ¡Ó 32.3 ind. / 100m3. The five most dominant species were Limacina inflata, Creseis virgula var. conica, C. acicula, L. bulimoides, and L. trochiformis, and together they contributed 81.0% of the total number of pteropods, among them, L. inflata occupied 46.7% and was the most dominant species in all seasons. In general , the composition of dominant species of pteropods in each season were similar but ranked different in abundance. The abundance and species number of pteropods changed seasonally. The abundance of pteropods was higher in 2004 than in 2005, and higher in summer than in winter. The species number was lower in autumn(9 ¡Ó 1) and higher in summer(13 ¡Ó 1). The abundance and the species diversity of pteropods were generally higher in the western site(the northern South China Sea) than in the eastern site(Kuroshio Current). In the waters of southern Taiwan, the abundance and diversity index of pteropods and the abundance of the five most dominant species showed no significant correlation with the sea surface temperature and salinity, except the species number that was negatively correlated with salinity.

Th. Univ.--Mécanique--Reims, 1989. / Bibliogr. p. 157-163.

Th. doct.--Mécanique des solides--Paris 6, 1992. / Résumé en français et en anglais. Bibliogr. p. 174-178.

No description available.

Thanks to previous work conducted by Staff et al. (1986), Copano Bay on the Texas coast presents an exceptional research area for studying 1) the effect of living volatility on death assemblage diversity and composition and 2) the stability of death assemblage diversity. Staff et al. (1986) revisited one site in Copano Bay every six weeks for 18 months in 1981-1982. In order to test the variability of both the live and dead assemblages of Copano Bay, Texas, the transect originally established by Staff et al. (1981) in 1981-1983, was reestablished in 2004 and sampled every six weeks for a duration of one year. Taxonomic abundance, diversity, and composition of these assemblages were compared to each other and those of Staff et al. (1981) in order to understand how both the living and dead assemblages have changed in the intervening 22 years. Important findings include: 1. Death assemblage composition in Copano Bay changed over 22 years more than expected based on short-term variation; 2. The death assemblages in Copano Bay reflected changes in taxonomic composition of the corresponding living community; 3. The death assemblages of Copano Bay were found to predominantly reflect the local, rather than the entire regional, species pool; and 4. Variation in diversity occurred at both six-week and 22-year time scales, indicating that the death assemblages at the study site are variable. Understanding time averaging and its effects on death assemblages will not only aid in paleocommunity reconstruction, but also aid in the construction of modern ecologic baselines.

Reproduction de : Thèse de doctorat : Science et génie des matériaux : Toulouse, INPT : 2007. / Titre provenant de l'écran-titre. Bibliogr. 174 réf.

Thèse (Ph. D.)--Université Laval, 2007. / Titre de l'écran-titre (visionné le 5 mai 2008). Bibliogr.

Thesis (B.S.)--University of Wisconsin -- La Crosse, 2008. / Also available online. Includes bibliographical references (leaves 47-49).

Thèse (Ph. D.)--Université Laval, 2003. / Titre de l'écran-titre (visionné le 29 mars 2004). Bibliogr.

Th.--Autom.--Besançon, 1985. N°: 004.