Water mass shapes the distribution patterns of planktonic ciliates (Alveolata, Ciliophora) in the subtropical Pearl River Estuary
Water mass shapes the distribution patterns of planktonic ciliates (Alveolata, Ciliophora) in the subtropical Pearl River Estuary
复制标题
水团塑造了亚热带珠江口浮游纤毛虫（Alveolata、Ciliophora）的分布模式
DOI：
10.1016/j.marpolbul.2021.112341
复制
发表时间：
2021-04-14
影响因子：
5.8
通讯作者：
Xu, Dapeng
中科院分区：
文献类型：
--
作者：
Gu, Bowei;Wang, Ying;Xu, Dapeng
纤毛虫是各种海洋环境中微型浮游动物的重要组成部分。然而，在何种程度上的环境变量形状的分布在复杂的河口系统的浮游纤毛虫仍然不清楚。在此，收集了52个样品，从珠江口，中国揭示了环境变量对浮游纤毛虫群落的影响。珠江冲淡水、南海表层水和南海底层水3个水团纤毛虫的群落组成不同。纤毛虫的丰度、生物量、细胞大小和口径结构在3个水团中也存在显著差异。部分Mantel测试表明，水质量（以水温和盐度为代表）超过其他环境变量是驱动纤毛虫群落动态的主要因素。本研究揭示了亚热带复杂河口生态系统中浮游纤毛虫群落的控制机制。
Ciliates comprise essential components of microzooplankton in diverse marine environments. However, the extent to which environmental variables shape the distribution of planktonic ciliates in complex estuarine systems remains unclear. Here, 52 samples were collected from the Pearl River Estuary, China to reveal the influence of environmental variables on planktonic ciliate communities. Distinct community compositions of ciliates were found in three identified water masses: Pearl River diluted water mass, South China Sea surface water mass, and South China Sea bottom water mass. Significant differences in abundance, biomass, cell size, and oral diameter structure of ciliates were also detected among the three water masses. The partial Mantel test showed that water mass (as represented by water temperature and salinity) surpassed other environmental variables to be the primary factor driving the dynamics of the ciliate community. This study revealed the controlling mechanisms of planktonic ciliate communities in a subtropical, hydrographically complex estuarine ecosystem.