In the framework of Work Package (WP4): Translating theory into practice, the team of Democritus University of Thrace(Lead Partner) visited Pindos National Park for the first field research and field data collection, in July, 2018. Ground truth data that accurately reflect the land cover, are considered necessary for the efficient mapping of genetic sources and ecosystem services. In total, 90 control points were collected using portable G.P.S and recording information on land cover (species-density). Moreover, landscape photographs of sampling plots were taken. The results of the action will be used for testing the accuracy and precision of the classification products of satellite images and the validation of the produced biodiversity and ecosystem service maps.