Environmental factors influencing the vertical migration of planktonic rotifers in a hypereutrophic tarn
Environmental factors influencing the vertical migration of planktonic rotifers in a hypereutrophic tarn
复制标题
影响富营养化湖区浮游轮虫垂直迁移的环境因素
DOI：
10.1007/bf00025743
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发表时间：
1987
期刊：
影响因子：
2.6
通讯作者：
D. G. George
中科院分区：
文献类型：
--
作者：
L. J. Stewart;D. G. George
1983年，在一个小型的、过营养的水库中，对浮游轮虫的昼夜垂直迁移进行了四次调查。当塔是等温的轮虫分布在整个水柱。分层后，轮虫被限制在含氧水的顶部1 - 2米。在所有四个日期的轮虫聚集在特定深度的水柱。在某些情况下，聚集的模式改变了动物进行不同的昼夜迁移。quadrata和Polyarthra vulgaris通常跟随浮游植物的反向迁移。与此相反，Anuraeopsis fissa的运动不太明显，并与在尖跃层的深度变化。
The diel vertical migration of planktonic rotifers in a small, hypereutrophic tarn was investigated on four occasions in 1983. When the tarn was isothermal the rotifers were distributed throughout the water column. After stratification, the rotifers were confined to the top 1–2 m of oxygenated water. On all four dates the rotifers were aggregated at specific depths in the water column. On some occasions, the pattern of aggregation changed as the animals performed distinct diurnal migrations.Keratella cochlearis, K. quadrataandPolyarthra vulgarisusually followed the reverse migrations of the phytoplankton. In contrast, the movements ofAnuraeopsis fissawere less pronounced and were associated with variations in the depth of the oxycline.