RT Journal Article T1 User-generated data to predict visitors in environmental areas A1 Hervés-Pardavila, David A1 Castro-Atanes, Ana A1 Loureiro García, María Luz K1 Flickr K1 Recreation K1 Recreational ecosystem services K1 Tourism K1 User-generated data AB The economic valuation of recreational ecosystem services is challenging due to difficulties in obtaining geo-tagged information of users. The objective of this study is to validate crowdsourced and user-generated content in order to predict visitation patterns to 16 national parks in Spain. The results may serve to encourage its utilization in the study of recreational demand in other countries, particularly developing countries, where on-site visitor information may be limited or expensive to gather. The present article employs a negative binomial regression model to evaluate the validity of two sources of data: Flickr and mobile phones. The accuracy of predictions exhibited variation across the 16 parks, indicating that site-specific characteristics, such as the seasonality of visitation patterns, may be of significance. The utilization of mobile phone data for modelling visitors yielded enhanced predictive capacity, as shown by the goodness of fit of the estimated models. PB Cambridge University Press SN 1355-770X YR 2025 FD 2025-11-05 LK https://hdl.handle.net/10347/44025 UL https://hdl.handle.net/10347/44025 LA eng NO Hervés-Pardavila D, Castro-Atanes A, Loureiro ML. User-generated data to predict visitors in environmental areas. Environment and Development Economics. Published online 2025:1-19. doi:10.1017/S1355770X2510020X NO The authors would like to thank Programa de Ciencias Mariñas de Galicia for funding part of this research, and the project PID2022-142642OB-I00 from the State Reseach Agency . DS Minerva RD 24 abr 2026