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Due to their high structural and functional diversity, soil invertebrates are crucial for ecosystem functioning and its stability. This diversity is reflected not only in the multitude of quantitative and qualitative studies, but also in the range of existing vocabularies of characters and character states for functional soil biodiversity. Data mining and text mining are increasingly used to scour large data resources and systematically extract relevant information in a machine-based manner. Controlled vocabularies play a central role in applying these methods to represent implicit and explicit knowledge in so-called knowledge graphs in a structured and machine- and human-readable way. The Specialized Information Service Biodiversity Research (BIOfid) aims at this method of data mobilization from Central European biodiversity literature. In cooperation with the European Soil-Biology Data Warehouse for Soil Protection (EUdaphobase), differing vocabularies on the taxonomy, anatomy, ecology and traits of soil invertebrates are currently being harmonized and mapped onto domain-specific ontologies. In addition to data extraction, these ontologies should also support the interoperable and sustainable management of pan-European soil biodiversity data.

This work is funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation), DFG Grant MO 412/54-2, project number 326061700, and the European Cooperation in Science and Technology (COST), COST Action CA18237.