School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.
J Environ Sci (China). 2009;21(12):1632-8. doi: 10.1016/s1001-0742(08)62466-3.
A cyanobacterial (Arthrospira platensis) bloom was induced in situ by nutrient manipulation in an enclosure. The succession of the phytoplankton community and the water chemistry variations before the appearance of bloom, as well as their relationship, were investigated. The cell pigment variations were studied simultaneously. The Pearson's correlation analysis showed that there was no significant correlation between water chemistry and green algal or cyanobacterial composition, indicating that water chemistry variations were not suitable to be used as indicators for cyanobacterial-bloom early-warning. However, the diversity index of the phytoplankton community decreased sharply before the bloom appeared. Therefore, the dynamics of phytoplankton community was put forward to be an indicator for cyanobacterial-bloom early-warning. In addition, the cell pigment variations represented the changes of community structure, which should be useful for studying the dynamics of phytoplankton community.
在围隔中通过营养操作原位诱导蓝细菌（螺旋藻）水华。调查了水华出现前浮游植物群落的演替和水质变化及其关系。同时研究了细胞色素的变化。Pearson 相关分析表明，水质与绿藻或蓝藻组成之间没有显著相关性，表明水质变化不适合作为蓝藻水华预警的指标。然而，在水华出现之前，浮游植物群落的多样性指数急剧下降。因此，提出了浮游植物群落的动态变化作为蓝藻水华预警的指标。此外，细胞色素的变化代表了群落结构的变化，这对于研究浮游植物群落的动态变化应该是有用的。
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