厦门海域一次冬季血红哈卡藻赤潮的初步分析

本文根据2009年1—2月厦门海域一次冬季血红哈卡藻赤潮的调查数据,分析本次赤潮的变化特点,并对血红哈卡藻与环境因子的关系进行初步分析。结果表明:本次赤潮是厦门海域有记载的赤潮中,发生时间最早、持续时间最长的赤潮。赤潮中血红哈卡藻比中肋条藻更具竞争优势,对水温变化的适应性很强。盐度对血红哈卡藻的繁殖具有刺激作用。在无机磷限制环境中,血红哈卡藻更具竞争优势,而无机氮含量高有利于血红哈卡藻的生长。

Primary analysis on red tide of Akashiwo sanguinea in winter in Xiamen Sea

According to the monitoring data of Akashiwo sanguinea red tide occurred in Xiamen Sea in January and February 2009,the characteristic of red tide,the relationships of environmental factors and the density of Akashiwo sanguinea were analyzed.The results showed that the red tide event was the earliest and the longest one in Xiamen Sea.Akashiwo sanguinea had more competitive advantages over Skeletonema costatum and had a strong adaptability to water temperature change during the red tide,and the reproduction could be simulated by higher salinity.Besides,Akashiwo sanguinea had more competitive advantages in inorganic phosphorus limited environment and was benefited by the high nitrogen.