紫霞湖浮游甲壳动物昼夜垂直迁移及其影响因子分析

摘要

Diel vertical migration （DVM） of the crustacean zooplankton was investigated from September 19 to 21, 2010 in Lake Zixia, Nanjing.The factors impacting on DVM were also analyzed.The depth of the site for DVM investigation was 8.5 m.The physiochemical fact%2010年9月19～21日,对江苏南京紫霞湖（水深8.5m）浮游甲壳动物昼夜垂直迁移行为进行了调查,分析了影响昼夜垂直迁移的因素。结果表明,奥氏秀体溞（Diaphanosoma orghidani）、象鼻溞（Bosmina sp.）、颈沟基合溞（Bosminopsis deitersi）、台湾温剑水蚤（Thermocyclops taihokuensis）和中华原镖水蚤（Eodiapotomus sinensis）成体均表现出昼夜迁移现象,中华原镖水蚤幼体和无节幼体无明显昼夜迁移。紫霞湖的温度、溶解氧和叶