Fig. 1

Number of search results per year for systematic reviews and maps. Each line represents a separate search conducted for this commentary and replicates an identical search from a systematic map or review published between 2012 and 2017 in the journal Environmental Evidence. Data and code are available on figshare; https://doiorg.publicaciones.saludcastillayleon.es/10.6084/m9.figshare.12254321