Although the AQEM system has been developed with care and is based on an extensive data set, it certainly can and will be improved in the future.

For this purpose, we need your help!

If you notice any mistake or have suggestions for improvements we would be most grateful if you inform us via aqem@uni-essen.de.

Your failure or suggestion notice could e.g. cover:

• obvious errors in the system, e.g. calculation mistakes in the software
• suggestions to improve the method (e.g. sampling, sorting, metrics applied for a certain stream type,
  class boundaries, scores of individual taxa) or the software (e.g. more user-friendly application)
• any other suggestions related to the software, the taxa list or this manual.

All people and institutions contributing to the update with their suggestions will automatically be informed about the update. We would like to thank you very much in advance for your effort and help.