Tourism and air transport are among the sectors most affected by the Covid-19 crisis. The pandemic lasting more than a year is reflected in short-term effects in both sectors, but there are also severe long-term consequences. National authorities will have to set recovery plans following the...

This work applies systems theory and tools to build a flexible framework for sustainable tourism in Portugal due to the Covid-19 impacts. The objectives are (1) to explore the cause-effect relationships between and among the variables involved; (2) to develop a causal loop diagram that resumes the...