“…Forest communities on rock outcrops have a distinctive floristic composition and physiognomy with respect to that of the surrounding forests. Outcrops with different substrates have been recognized worldwide as providing important habitats for biodiversity conservation, particularly for endemic and rare species (Aukema, Carlo, & Collazo, 2007;Cantero et al, 2014;Gallardo-Hernández, Velázquez, & Asbjornsen, 2008;Pérez-García & Meave, 2004;Pérez-García, Sevilha, Meave, & Scariot, 2009;Rivera, Zimmerman, & Aide, 2000;Wiser & Buxton, 2009). Some differential trends have also been reported in vegetation structure and species composition on outcrops compared to those of nearby forests on deeper soils (Brewer, Rejmánek, Webb, & Fine, 2003;Gallardo-Hernández et al, 2008;Sawada et al, 2015;Tang, Lü, Yin, & Qi, 2011).…”