Thisbook constitutes the refereed proceedings of the International Conferenceon Geographical Information Systems Theory, Applications and Management, heldin Barcelona, Spain, in April 2015.

The10 revised full papers presented were carefully reviewed and selected from 45submissions. The papers address new challenges in geo-spatial datasensing, observation, representation, processing, visualization, sharing andmanaging. They concern information and communications technology (ICT) as wellas management of information and knowledge-based systems.