同安湾浮游动物数量的平面分布和季节变动

Horizontal distribution and seasonal variation on quantity of zooplankton in Tongan Bay

本文主要研究 2 0 0 0年同安湾浮游动物的种类组成和数量分布 ,并就其与环境因子的关系进行了初步探讨。结果表明 ,在同安湾共记录到浮游动物 69种及 1 2种浮游幼虫 ,以近岸低盐种类为主。浮游动物数量季节分布呈现春季高 ,冬、夏季居中 ,秋季最低的特点。种类数的季节分布与水温的季节变化一致。浮游动物数量与养殖贝类、浮游植物细胞数密切相关 ,并与浮游植物数量呈显著的正相关关系。同安湾浮游动物的数量与邻近养殖水域西海域的相当 ,比马銮湾的低。与历史资料比较 ,同安湾浮游动物的次级生产力水平比 1 995年的有所上升 ,但恢复得较慢。

The species composition and quantitative distribution of zooplankton collected from Tongan Bay in 2000 were analyzed and studied on their relation with environmental factors in this paper. The results showed that 69 species of zooplankton and 12 groups of planktonic larvae were recorded. Among them neritic low salinity species was the dominate community. The character of seasonal distribution was that the highest abundance was found in spring, followed by winter and summer, and the lowest appeared in autumn. The seasonal variation of species number was consistent with the seasonal variation of temperature. The quantity of zooplankton had close correlation with the cultural shellfishes and the cell quantity of phytoplankton; and it was positively correlated to the latter. The amount of zooplankton in Tongan Bay was the same with that in Xihaiyu; but it was less than that in Maluan Bay.And they were the culture waters close by Tongan Bay. Furthermore, it showed that secondary zooplankton productivity in Tongan Bay had arisen a little than that in 1995 by historical data, but it restored slower.