25-26 April 2018, Riga, Latvia: The COMPLETE project team held its first regular team meeting in Riga. The new project partner LIAE (Latvian Institute of Aquatic Ecology), who hosted the meeting in Riga, was welcomed by COMPLETE partners. All partners presented the actual status of their project work and the following steps. Methodological approaches were discussed and sub-collaborations on certain topics were agreed. The next project meeting will be held in Gothenburg in December 2018.