Redes y comunidades de descriptores en artículos de Biblioteconomía y Ciencia de la Información (1971-2020)

This paper examines the keywords selected by its authors to describe their own scholarly work in the subject field of Library and Information Science collected in the Web of Science portal between 1971 and 2020. The main thematic subfields of research in this discipline have been identified by means of communities search algorithms of network analysis, and their temporal evolution has been analyzed through the use of dynamic networks. Results show keywords with high frequency, but associated with another keywords evolving over time, suggesting specializwed topics. There are, besides, thematic groups of keywords well defined; among the thirteen areas found, the main ones have been grouped around six broad interrelated descriptors: bibliometrics, library, e_government, e_commerce, information_literacy and knowledge_management, whose evolutions are manifested in different patterns.