Résumé
The paper decribes the motivation, challenges and preliminary results of changes made to Agrotermos, Embrapa's conceptual space, to turn it into a semantic resource encoded in standard Knowledge Organization Systems (KOS) formats in order to facilitate it's manteinance and edition, promote its interoperability with other resources and improve the access and visibility to Brazilian Portuguese semantic resources and henceforth to Embrapa's results in Brazilian research in Agriculture and related domains. These changes were made within the scope of a partnership established with AgroPortal, a web-based platform designed to support data integration, sharing, and analysis, and which offers tools and services to manage and use ontologies and semantic resources. Agrotermos' infrastructure and processes are being reformulated, VocBench is being implemented as its data management tool, and its contents are being prepared and validated for publication in AgroPortal. The preliminary results of the changes to Agrotermos' infrastructure show that both VocBench and AgroPortal largely improve editing, visualization of the semantic content and validation of mappings and alignments between vocabularies.