Abstract:Brown tide blooms caused by Aureococcus anophagefferens were monitored by buoys in Qinhuangdao coastal area in 2013 and 2014.The Changes of water quality parameters during the blooms were analyzed.The concentration of Chlorophyll-a reached as high as 50 μg/L and fluctuated in a large range.The peak values of Chlorophyll-a were often obtained at night.Water temperature was below 25℃ during most time of the blooms.And water temperature increased sharply from 22℃ to 28℃ before the bloom decayed in 2013.
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