OALib Journal期刊
海南热带水库敞水区浮游甲壳动物群落结构特征
DOI: 10.18307/2011.0214
Keywords: 浮游甲壳动物 ,群落结构 ,敞水区 ,热带水库 ,海南
Abstract:
于枯水期(2006年12月)和丰水期(2007年5月)对海南省7座水库敞水区进行采样调查,共检出浮游甲壳类动物15种,多为广温性和嗜热性种类,其中桡足类7种,枝角类8种.温中剑水蚤(Mesocyclopsthermocyclopoides)、脆弱象鼻溞(Bosminafatali)和颈沟基合溞(Bosminopsisdeitersi)是出现频率较高的种类,优势种均以小型种类为主.处于贫、中营养状态的水库浮游动物种类数在丰水期高于枯水期;处于富营养状态的水库,情况则相反.优势种中的脆弱象鼻溞和模糊秀体溞(Diaphanosomadubium)的丰度与大多数种类的丰度呈显著正相关关系,台湾温剑水蚤(Thermocyclopstaihokuensis)及温中剑水蚤与部分枝角类存在一定的负相关,但这些关系均不显著,说明浮游动物的种间关系相对较弱,营养水平和鱼类捕食是影响水库浮游甲壳动物群落组成和多样性的主要因素。
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