The level of human activity an area can accommodate without the area deteriorating, the resident
community being adversely affected or the quality of visitors experience declining (Middleton and Hawkins Chamberlain , 1997)
The maximum number of people that may visit a tourist destination at the same time, without causing
destruction of the physical, economic, socio-cultural, environment and an unacceptable decrease in the quality of visitors' satisfaction (World Tourism Organization, 1997)
The number of people that a site can cope with before it deteriorates (Sue Beeton, 1998)