Correction: Consolidating Dispersed Knowledge About Citizen Science and Citizen Observatories: Experiences from the Four WeObserve Communities of Practice

Uta Wehn; Dilek Fraisl; Joan Masó Pau; Mohammad Gharesifard; Linda See; Gerid Hager; Jessica L Oliver; Tova Crystal; Raquel Ajates; Ane Bilbao; Eglė Butkevičienė; Carlo Andrea Biraghi; Jillian Campbell; Laurent Durieux; Eugenio Gervasini; Margaret Gold; Gitte Kragh; Andreas Matheus; Stephen Mac Feely; Lukas Mocek; Maina Muniafu; Lea Shanley; Ali Yousefi