2000~2001年柘林湾浮游动物的群落结构及时空分布

被引:34
作者
姜胜
黄长江
陈善文
周凯
董巧香
机构
[1] 暨南大学水生生态研究所
[2] 汕头大学海洋生物重点实验室
[3] Aquaculture Research Station
[4] Louisiana State University
关键词
柘林湾; 浮游动物; 群落结构; 时空分布;
D O I
暂无
中图分类号
Q178.53 [海洋生物];
学科分类号
070703 ;
摘要
20 0 0年 7月至 2 0 0 0 1年 7月的周年调查结果表明 ,粤东柘林湾浮游动物有桡足类 2 9属 5 7种 ,枝角类 3属 3种 ,及端足类、磷虾、糠虾、多毛类、毛颚类、被囊类、水母和各种浮游幼体。其中 ,强额拟哲水蚤 Paracalanuscrassirostris、短角长腹剑水蚤 Oithona brevicornis和鸟喙尖头 Penilia avirostris为优势种 ,合计占浮游动物总个体数的 6 2 .7%。浮游动物的种类数、生物量和总个体数都表现为湾外大于湾内的平面分布格局 ,周年变化基本上为单峰型 ,高峰期位于 6~ 1 0月份 ,最低谷位于冬季 1月份。因此 ,总个体数与水温成显著正相关关系。柘林湾是一个浮游动物相对丰富的海湾 ,年均生物量为 1 1 5 .7mg· dw / m3 ,总个体数达 6 .8× 1 0 3 ind/ m3 ,但群落结构的小型化趋势比较明显。回归分析结果表明 ,浮游动物总个体数与浮游植物密度成显著正相关关系。
引用
收藏
页码:828 / 840
页数:13
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