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湖泊科学  2012 

太湖北部隐藻生物量时空动态

DOI: 10.18307/2012.0120

Keywords: 隐藻,蓝藻,竺山湾,梅梁湾,贡湖湾,太湖,生物量

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Abstract:

利用2005-2009年每月一次的监测资料,对太湖竺山湾、梅梁湾和贡湖湾理化因子和浮游植物,特别是隐藻生物量周年季节变化进行比较研究,探讨环境因子以及蓝藻变化对隐藻生物量的影响.结果显示,竺山湾内隐藻平均生物量(1.89mg/L)高于梅梁湾(0.87mg/L)、贡湖湾(0.43mg/L).20082009年隐藻平均生物量(2.12mg/L)高于20052007年平均生物量(0.28mg/L).通过与环境因子的时空差异比较分析,竺山湾内高营养盐浓度、高有机质浓度和高悬浮质浓度使得隐藻更具有竞争优势,而贡湖湾内浮游动物的摄食作用可能限制了隐藻生物量.同时,太湖隐藻与蓝藻的竞争演替趋势明显,春夏季高温和蓝藻的过度繁盛可能对隐藻的生长产生抑制作用.

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