마산만에서 근족충류(Rhizopoda)의 시ㆍ공간적 분포 양상

Abstract

In order to understand the temporal and spatial distribution of rhizopoda(amoebae and heliozoa) in Masan Bay, we collected samples seasonally at 33 stations during April 2006-February 2007. Heliozoa occurred in all seasons during this study and the abundance was in the range of 0~8.4x103 cells/L (mean 0.82x103 cells/L). Amoebae occurred in winter season only and the abundance was in the range of 0~175.4x103 cells/L (mean 14.0x103 cells/L). The abundance of heliozoa was negatively correlated with DO and pH. While the abundance of amoebae had positive correlations with DO and COD, and had also a significant relationship with chl-a concentrations. This study suggests that in Masan Bay the dissolved oxygen to be an important factor for determining the abundances of heliozoan and amoebae, and the chl-a concentrations to be a potentially important factor determining the abundance of amoebae.