“…The portal allows committed citizens, via an online-entry, to capture their visual and geo-referenced observations of species, which are judged by scientifically trained experts, and then released for the official nature conservation as well as for scientific analysis (JACOBS & RESCH 2013). Besides this example, there is a variety of other citizen science activities on environmental issues at local, regional, national, international, and global levels in areas such as biodiversity, air pollution, or in the recording of the changing shapes of cities (ALAGAN & ALADUWAKA 2013, CORRIGAN & HAY-EDIE 2013, DAVIS et al 2011.…”