Glenn Mandzluk, chief executive of the World Sustainable Hospitality Alliance, told WTM London delegates travel was suffering from a communication problem "like never before".
Speaking as part of a panel entitled Preventing the destructive peaks of mass tourism, Mandzluk said the industry was "poor" at finding common ground when it comes to measuring progress.
"We’re unable to communicate to the resident, to the tourist and to ourselves, as destination managers and the owners of companies, an ability to plan for peaks in the system," said Mandzluk. "Everybody intuitively knows that, but they don’t plan it effectively.