The European Long-term Ecosystem Research Infrastructure (eLTER) is an initiative in which Masaryk University participates through Tom Rebok's research group at the Institute of Computer Science. This project aims to create a collaborative European research environment for sharing and conducting a comprehensive study of environmental data. A key component of this infrastructure is the eLTER DAR data repository, which consolidates data sets from various measurement stations and research institutions.

This thesis focuses on designing and implementing a modular system for the automated harvesting of data sets and metadata from various external repositories. The system will facilitate the mapping of external metadata models to the standards used in eLTER DAR, allowing for both fully automated metadata processing, such as adding information about measurement stations, and manual editing through a user-friendly interface. The solution will demonstrate its functionality by harvesting data from selected external repositories, including Zenodo, B2Share, and SITES. Additionally, it will provide options for manually entering individual records and offer an overview of the status of harvesting processes. The developed solution will be integrated into the eLTER infrastructure services, particularly communicating with the DAR and OAR services. In the written part of the thesis, the student will provide a detailed description of the system architecture and implementation methods, as well as document opportunities for future enhancements with new sources or functionalities.