...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Ecological research >Composition and structure of aquatic organism communities in various water conditions of a paddy field
【24h】

Composition and structure of aquatic organism communities in various water conditions of a paddy field

机译：稻田不同水分条件下水生生物群落组成与结构

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The purpose of this study was to clarify the differences of the community structure and the diversity of aquatic organisms (ⅰ) among sampling sites that the distances from inlets or outlets were different each other, and (ⅱ) between the floodwater and the irrigation water during the crop season in a paddy field. The irrigation water was sampled from one inlet. The taxonomical groups and the number of aquatic organisms ranging in size from 30 μm to 2 cm in the floodwater and the irrigation water were surveyed approximately every 10 days during the growth period of the rice plant. Aquatic organisms were classified mainly at the order level. Thirty-eight taxonomical groups of aquatic organisms were found in the floodwater, while 18 groups were found in the irrigation water. We were not able to find the differences of the community structure of aquatic organisms among the sites. In the floodwater, the number of taxonomical group increased and the community structure changed during the late flooding period (over 50 days after the onset of flooding) at any site, while those in the irrigation water hardly changed. Although the community structure of aquatic organisms differed between the floodwater and the irrigation water throughout the flooding period, the differences became especially bigger during the late flooding period. Principal component analysis showed that three groups (Pennales, Dinoflagellida, Choreotrichida) characterized the community structure in the irrigation water. Their population densities tended to be the highest at the site near inlets and the lowest at the site far from inlets.
机译：这项研究的目的是弄清采样点之间的群落结构和水生生物多样性的差异（ⅰ）与进水口或出水口的距离互不相同，以及（ⅱ）洪水期间灌溉水和灌溉水之间的距离。稻田的收成季节。从一个入口采样灌溉水。在水稻生长期间，大约每10天调查一次洪水和灌溉水中的生物分类群和大小在30μm至2 cm之间的水生生物数量。水生生物主要按顺序分类。在洪水中发现了38个水生生物分类学类别，而在灌溉水中发现了18个生物分类学类别。我们无法找到站点之间水生生物群落结构的差异。在洪水中，在任何地点的后期洪水期间（洪水发生后的50天以上），分类学类群的数量都增加了，群落结构发生了变化，而灌溉水中的分类群几乎没有变化。尽管在整个洪水期间，洪水和灌溉水之间的水生生物群落结构都不同，但在洪水后期，差异特别大。主成分分析表明，三个群体（Pennales，Dinoflagellida，Choreotrichida）表征了灌溉水中的群落结构。他们的人口密度往往在靠近进口的地点最高，而在远离进口的地点最低。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号