“…For several years and all around the world, many authors have stressed the growth of these practices and their importance for local, regional, and national economies (Beedie & Hudson, 2003;Betrán & Betrán, 1999;Boutroy, Bourdeau, Mao, & Senil, 2012;Brasil & Carvalho, 2009;Buckley, 2002;Cloke & Perkins, 2002;Ditton & Baker, 1999;Hill, Cable, & Scott, 2010;Kouthouris & Alexandris, 2005). Certain clues to these market development trends can be found in Breivik (2010) and latterly in Rosa, Carvalhinho, and Soares (2014). Nature tourism and the exploitation of biodiversity comprise a promising business opportunity (United Nations Environment Programme-UNWTO, 2012), and therefore, outdoor sports can be influenced by these trends.…”