A number of examined caves and relative percentages for the different biogeographic regions B list of countries where most of the studied show caves are located with their frequencies and relative percentages C list of the show caves most frequently studied in literature and their relative frequency and percentage in the considered papers D number of studied show caves and relative percentages within the examined papers. Percentages are calculated with respect to the total number of show caves in A, B, and with respect to the total number of papers in C, D.

 
 
  Part of: Piano E, Nicolosi G, Mammola S, Balestra V, Baroni B, Bellopede R, Cumino E, Muzzulini N, Piquet A, Isaia M (2022) A literature-based database of the natural heritage, the ecological status and tourism-related impacts in show caves worldwide. Nature Conservation 50: 159-174. https://doi.org/10.3897/natureconservation.50.80505