“…The use of public resources (such as natural parks, lakes or beaches) in the provision of tourist services can be linked to over-exploitation and congestion (Hillery, Nancarrow, Griffin & Syme, 2001), which threaten the destinations' natural environment and, in a sort of vicious cycle, can also reduce the value that visitors place on the natural resources (Lukashina, Amirkhanov, Anisimov & Trunev, 1996). Thus, environmental degradation can also threaten the long-term sustainability of economic activity in places that are highly dependent on tourism (Hernández-Martín et al, 2015).…”