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当前位置: 首页 > 文章 > 球形棕囊藻赤潮消亡过程环境因子变化及其消亡原因 生态学杂志 2015,34 (5) 1351-1358
Position: Home > Articles > Variation of environmental factors during Phaeocystis globosa blooms and its implications for the bloom decay Chinese Journal of Ecology 2015,34 (5) 1351-1358

球形棕囊藻赤潮消亡过程环境因子变化及其消亡原因

作  者：
李波;蓝文陆;李天深;黎明民
单  位：
广西壮族自治区海洋环境监测中心站
关键词：
赤潮;球形棕囊藻;环境因子;消亡原因
摘  要：
针对2014年2月北部湾近岸海域的2次球形棕囊藻赤潮,分析了球形棕囊藻赤潮消亡过程的环境变化,探讨了球形棕囊藻赤潮消亡的原因。结果表明:棕囊藻赤潮发生期各站点球形棕囊藻的胶质囊泡密度为200~3000个·m-3,细胞密度为1.8×107~1.5×108cells·L-1,而赤潮消亡期各站点球形棕囊藻的胶质囊泡密度为1~200个·m-3,细胞密度为1.0×106~8.3×107cells·L-1,监测期间胶质囊泡和细胞密度呈下降趋势,赤潮逐步消亡;赤潮消亡时主要环境因子变化特征显著,水温、p H值、DO及COD含量呈下降趋势,活性磷酸盐及部分站点无机氮浓度较低,氮磷比呈上升趋势;温度降低、盐度升高和磷酸盐的限制影响球形棕囊藻的生长繁殖,很可能是直接导致球形棕囊藻赤潮消亡的主要原因。本研究为今后球形棕囊藻赤潮的预警和治理提供重要依据。
译  名：
Variation of environmental factors during Phaeocystis globosa blooms and its implications for the bloom decay
作  者：
LI Bo;LAN Wen-lu;LI Tian-shen;LI Ming-min;Marine Environmental Monitoring Center of Guangxi;
关键词：
bloom;;Phaeocystis globosa;;environmental factors;;death causes.
摘  要：
Variations of environmental factors during two Phaeocystis globosa blooms were studied and the causes for the decay were discussed. The results showed that the algal colloid vesicles and cell density were 200-3000 ind·m-3and 1. 8 ×107-1. 5 ×108cells·L-1respectively during the peaks of the blooms,and decreased to 1-200 ind·m-3and 1. 0 ×106-8. 3 ×107cells·L-1respectively during the decaying period. Colloid vesicles and cell density markedly decreased during the decaying period and the environmental factors changed significantly during the decaying stage. Water temperature,p H,DO and COD contents decreased significantly,while the concentrations of DIN and reactive phosphate were low and the N / P ratio was under a trend of increase during the decay of blooms. It is speculated that phosphate limitation,low temperature,and high salinity were the major causes for the decay of P. globosa bloom. This study provided some clues for the construction of early warning system and the surveillance of red tide in future.

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