Purpose Citizen Science – public participation in scientific projects – is becoming a global practice engaging volunteer participants, often non-scientists, with scientific research. Citizen Science is facing major challenges, such as quality and consistency, to reap open the full potential...

The emergence of the Web2.0, Web services and the Semantic Web, have changed the WWW to an open interactive market. Heterogeneous and distributed information prosumers have to integrate data and to coordinate activities. This calls for novel middleware solutions that are compliant with the...