Weeks and weeks I was busy now with sorting the organisms in the samples. Out of the mixture of sediments, debris and other organic matter I pick the benthic invertebrates that I have to identify later on. It's lots of manual labour!
Benthic invertebrates are bioindicators. So they give us lots of information about the rivers. They can tell us about water temperature or flow velocity, altitude or river zonations and even about disturbances like water pollution or flow alterations.
In our case, we are looking for changes in the communities caused by water abstraction.
So, let's see what they will let us know...
