Monitoring juvenile rheophilic fish communities in the Lower Rhine with different sampling techniques

In order to improve the area of suitable spawning and nursery grounds for juvenile rheophilic fish, secondary channels and oxbow lakes have been created in the floodplain areas along the Lower Rhine in Germany and the Netherlands. In order to measure ecological quality and the effects of measures taken, in both countries fish stocks in the river and its floodplain waters are monitored on a regular basis. For this purpose different sampling methods are used by the German and Dutch researchers.