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Distribution of Zooplankton in Harlan County Reservoir, Nebraska

机译:内布拉斯加州哈兰县水库的浮游动物分布

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摘要

The objective of this study was to determine the horizontal and vertical distribution of zooplankton in Harlan County Reservoir in order to assist in developing an appropriate zooplankton sampling regime for this and similar Nebraska irrigation reservoirs. Samples were collected at 16 sites distributed across 3 zones of the reservoir monthly in April, May, June, and July of 2007 using a 2.2 L Van Dorn sampler. Samples were collected at depths of 1, 4, and 7 meters, poured through an 80-μm filter, preserved, and identified to the lowest possible taxa. Total zooplankton densities in Harlan County Reservoir were statistically similar for samples collected at 1 m, 4 m, and 7 m of depth from April, June, and July samples. Samples collected in May had significantly more zooplankton at 1 m of depth (F = 6.98; p ≤ 0.01) compared to 4 m and 7 m. Density of total zooplankton collected at 1 m depth from pelagic and littoral sites in zone 1 was similar among months. Also, zooplankton densities were similar from the upper, middle, and lower regions of Harlan County Reservoir in all four sample months. These results indicate that zooplankton distribution in Harlan County Reservoir have a homogeneous vertical and horizontal distribution.
机译:这项研究的目的是确定哈兰县水库浮游动物的水平和垂直分布,以帮助为该内布拉斯加和类似内布拉斯河灌溉水库开发合适的浮游动物采样方案。使用2.2升Van Dorn采样器,每月于2007年4月,5月,6月和7月在分布于水库3个区域的16个站点采集样本。在1、4和7米的深度处收集样品,倒入80微米的过滤器中,保存并鉴定为可能的最低分类单元。从4月,6月和7月的样本中分别在1 m,4 m和7 m深度采集的样本中,哈兰县水库的浮游动物总密度在统计学上相似。与4m和7m相比,5月收集的样本在1m深度(F = 6.98; p≤0.01)具有明显更多的浮游动物。在几个月中,从1区中上层和沿海地区采集的1 m深度浮游动物的总密度相似。此外,在所有四个采样月份中,哈兰县水库的上部,中部和下部区域的浮游动物密度相似。这些结果表明,哈兰县水库浮游动物分布具有垂直和水平均匀分布。

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  • 来源
    《Transactions of the Nebraska Academy of Sciences》 |2011年第2011期|p.79-83|共5页
  • 作者单位

    Nebraska Public Health Environmental Laboratory, 3701 South 14th Street, Lincoln, Nebraska 68502;

    Nebraska Game and Parks Commission, 16171st Avenue, Kearney, Nebraska 68847;

    Department of Biology, University of Nebraska at Kearney, 24011th Avenue, Kearney, Nebraska 68849-1140;

    Department of Biology, University of Nebraska at Kearney, 24011th Avenue, Kearney, Nebraska 68849-1140;

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  • 入库时间 2022-08-17 13:57:14

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