When a publication includes data obtained from the EPD it is appropriate that a statement of the following kind is included in the acknowledgements:

Pollen diagrams produced by the following authors have been used in compiling this article: (list here the names of all the authors whose data forms part of the synthesis), while the data itself has been accessed via the European Pollen Database (EPD). The contribution by these individual pollen analysts is gratefully acknowledged, as is the facility afforded by the EPD. The synthetic interpretation of these data, however, is that of the present authors.