Environmental psychology can also be examined through the infrastructures that make its own field observable, persistent and reusable. Ecologías del Campo proposes an analytical framework for studying how agents, documents, institutions, technologies, formats and languages participate in the public life of a scientific field. Drawing on a longitudinal and reflexive reconstruction of Psicología Ambiental Hoy, developed since 2011 from trajectories initiated in 2009, the paper identifies five recurrent operations — mapping, selecting, interpreting, relating and recirculating — through which heterogeneous documentary objects acquire continuity and new possibilities of use. It distinguishes persistence, availability, interpretability and reuse as different conditions of knowledge survival, and examines the gains and losses produced when knowledge moves between interviews, videos, scientific texts, archives, repositories and other formats. The corpus is treated as cumulative but non-linear: every new object may reinforce, displace, contradict or reopen previous interpretations. Scientific communication consequently appears not merely as the transmission of results, but as a potential form of epistemic infrastructure when it actively supports the preservation, contextualisation, comparison and reactivation of knowledge. DOI: https://doi.org/10.5281/zenodo.22813924
