The First Institute of Oceanography, State Oceanic Administration (SOA), Qingdao 266061, China.
Mar Pollut Bull. 2012 May;64(5):941-8. doi: 10.1016/j.marpolbul.2012.03.004. Epub 2012 Apr 1.
The phytoplankton assemblages' patterns and their correlation to environmental factors were studied in Bohai Bay during spring and summer. Two zones, the northern (NWA) and southern (SWA) water area, were identified by cluster analysis based on their physical and chemical properties. Principal component analysis (PCA) showed that more phytoplankton species was found in the SWA with low nutrient concentration, while high phytoplankton abundance occurred in the NWA with high nutrient concentration. The seasonal variability in phytoplankton can be explained by water temperature, nutrient, and hydrodynamic conditions (includes mixing during spring and stratification during summer). Results of redundancy analysis (RDA) showed that silicate (SiO(4)) and soluble reactive phosphorus (SRP) were the most important environmental factors influencing the phytoplankton distribution during spring and summer, respectively. Hydrodynamics condition plays a key role in controlling variation of the environmental factors, which determined phytoplankton distribution in Bohai Bay.
本研究于春、夏两季在渤海湾调查了浮游植物组合的模式及其与环境因子的相关性。基于物理化学性质，采用聚类分析将该海域划分为两个区域，即北部（NWA）和南部（SWA）水域。主成分分析（PCA）表明，SWA 区浮游植物种类较多，营养盐浓度较低，而 NWA 区浮游植物丰度较高，营养盐浓度较高。浮游植物的季节性变化可以用水温、营养盐和水动力条件（包括春季混合和夏季分层）来解释。冗余分析（RDA）的结果表明，硅酸盐（SiO（4））和可溶解活性磷（SRP）分别是春、夏两季影响浮游植物分布的最重要的环境因子。水动力条件在控制环境因子变化方面起着关键作用，决定了渤海湾浮游植物的分布。
