Influence of river discharge and wind field on the freshwater meiofauna of a dynamic river mouth area
Influence of river discharge and wind field on the freshwater meiofauna of a dynamic river mouth area
复制标题
河流流量和风场对动态河口区淡水小型底栖动物的影响
DOI：
10.1127/0003-9136/2005/0163-0307
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发表时间：
2005
期刊：
影响因子：
--
通讯作者：
K. Rothhaupt
中科院分区：
文献类型：
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作者：
André Witthöft;W. Traunspurger;K. Rothhaupt
对康斯坦茨湖（德国）河口附近的沿岸的小型底栖动物进行了研究，以确定河流对群落的影响。从1999年2月至2000年1月，从总共6个采样点按季节收集了4套重复的沉积物芯样。线虫占主导地位的小型底栖动物群落在所有网站。风速和河流流量的综合效应与最靠近河口的四个地点的小型底栖动物丰度密切相关。与此相反，小型底栖动物的网站进一步从河口占主导地位的温度，湖平面的变化，和营养相关的因素。小型底栖动物类群观察，线虫和寡毛类的存在密切相关的风和河流之间的相互作用。线虫和寡毛纲内的河流影响的沿岸的地区似乎是适应其栖息地的频繁变化。然而，这项研究也表明，由于河流和风在季节尺度上的强烈相互作用，靠近河流的沿岸的地区情况复杂。
The littoral meiofauna adjacent to a river mouth on Lake Constance (Germany) was studied in order to determine the effect of the river on the community. From February 1999 until January 2000 sets of four replicate sediment cores were collected from a total of six sampling sites on a seasonal scale. Nematodes dominated the meiofaunal community at all sites. The combined effect of wind speed and river discharge correlated strongly with the meiofaunal abundance at the four sites closest to the river mouth. In contrast, meiofauna of sites further from the river mouth were dominated by temperature, lake level variation, and nutrient-related factors. Of the meiofauna taxa observed, the presence of nematodes and oligochaetes was closely related to the interaction between wind and river. Nematodes and oligochaetes within the river-influenced littoral area seemed to be adapted to frequent changes in their habitats. However, the study also showed the complexity of littoral areas in proximity to rivers, owing to the strong interaction between the river and wind on a seasonal scale.