A study on the Seasonal composition of zooplankton with temporal and spatial distribution in the Shi-Men Reservoir

• Main Authors: Fong-Chueh Huang, 黃鳳雀
• Other Authors: Hsueh-Jung Lu
• Format: Others
• Language: zh-TW
• Published: 2012
• Online Access: http://ndltd.ncl.edu.tw/handle/42174888215099057691

碩士 === 國立臺灣海洋大學 === 環境生物與漁業科學學系 === 100 === Abstract The composition of zooplankton with temporal and spatial distribution in the Shi-Men Reservoir, northern Taiwan were examined based on the data of water quality monitoring from May 2006 to October 2009. There were 27 genus and 18 families and 8 orders found to comprise the three dominant groups of zooplankton Rotifer, Copepods and Cladocera. Among them, nauplius, Keratella cochlearis var. macrocantha, Macrocyclops albidus, Eodiaptomus japonicus and Polyarthra major consisting about 80% of the total number were the most abundant zooplankton. The composition of zooplankton varied seasonally with higher abundance in spring and autumn, and the lowest abundance in winter. In addition to seasonal variation, climatic warming and extreme rainfall also altered the distribution of zooplankton communities. Multivariate analyses based on cluster analysis and nonparametric multi-dimensional scaling identified three groups, which indicated that the abundance of each group was strongly controlled by seasonal and inter-annual variability. . The results of spearman correlation coefficient showed that zooplankton assemblages were significantly associated with environmental variables, which were strongly contributed by the stored water volume, temperature and precipitation. The analysis also suggested that moderate rainfall and temperature were helpful to the growth of zooplankton, but torrential rain and summer high temperature may caused negative effect in distribution and composition.