Identifying population thresholds for flowering plant reproductive success: the marsh gentian (Gentiana pneumonanthe) as a flagship species of humid meadows and heathland - Simon Pierce; Alberto Spada; Elisabetta Caporali; Filippa Puglisi; Andrea Panzeri; Alessandra Luzzaro; Simona Cislaghi; Lia Mantegazza; Elisa Cardarelli; Massimo Labra; Andrea Galimberti; Roberta M. Ceriani (Biodiversity and Conservation, 2018)