Coordinated biological studies in the Upper Rhine river 2011/12 (Summary)

Year 2015
Pages 1
Number UZ-1522-E
Publisher Federal Office for the Environment FOEN
Series State of the environment

Macroinvertebrates.

In 2011 and 2012 coordinated biological surveys were carried out in the High Rhine for the fifth time since the first campaign in 1990. This report discusses the colonisation of the river bed by small invertebrate organisms, the macroinvertebrates. Samples were taken over a cross section of the river at nine points in two campaigns (autumn 2011 and spring 2012). The results showed that the invertebrate biocoenosis has once again changed significantly over the past six years. The spread of invasive alien species which began some 20 years ago has now reached the upper sections of the High Rhine.


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