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An ecological analysis of the zooplankton community of an oxbow lake near the Angelina River, Texas.

机译：对德克萨斯州安吉丽娜河附近黄牛湖浮游动物群落的生态学分析。

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摘要

The zooplankton community of an oxbow lake located in Angelina County, Texas was studied monthly for a period of one year. The study began in March 1999 and lasted until February 2000. This oxbow lake is dependent upon the flooding regimes of the Angelina River as a water source since the lake has relatively no watershed from which it can receive water during rains. The results of the study indicated the lake was experiencing stressful conditions for much of the year. Several indicators were evidence of this condition. The first evidence was the fact rotifers dominated the community for most of the year. The second indication was the individual species that comprised the community. The third indication was the high number of cyclopoid copepods in relation to number of calanoid copepods. Finally, there was an extremely high numerical density of organisms in the lake for the majority of the year. With all of this evidence, it is apparent the lake is highly eutrophic. This probably is caused by the high amount of organic matter that is distributed throughout the lake from runoff and overhanging vegetation. Conditions were made worse by the drought conditions present for the duration of the study.
机译：位于得克萨斯州安吉丽娜县的牛弓湖的浮游动物群落每月接受研究，为期一年。这项研究始于1999年3月，持续到2000年2月。这个牛弓湖依赖于安吉丽娜河的洪水作为水源，因为该湖没有相对应的分水岭，因此在下雨时可以从中获取水。研究结果表明，该湖一年中大部分时间都处于压力状态。有几项指标证明了这种情况。第一个证据是，轮虫在一年中的大部分时间里都占据着社区的主导地位。第二个迹象是组成社区的单个物种。第三个迹象是相对于颅骨co足类的数量而言，摆线足co足类的数量很高。最后，一年中的大部分时间里，湖泊中的生物数量密度都非常高。有了所有这些证据，很明显该湖是富营养化的。这可能是由于径流和悬垂植被中大量有机物分布在整个湖泊中造成的。在研究期间，干旱条件使情况变得更糟。

著录项

  • 作者

    Rein, William Clark.;

  • 作者单位

    Stephen F. Austin State University.;

  • 授予单位 Stephen F. Austin State University.;
  • 学科 Limnology.;Ecology.;Environmental science.
  • 学位 M.Sc.
  • 年度 2000
  • 页码 88 p.
  • 总页数 88
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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