Over the past 20 years, the Luxembourg National Museum for Natural History (LMNH) has built a bio- and geodiversity information system to collate, manage and publish natural heritage observation and specimen data on a national and international level. To date the system counts over 2 million taxon occurrence and over 100,000 specimen records.<br> The Museum has chosen, whenever available, public or open source software tools complying to international biodiversity data standards for recording, managing and publishing data to increase resilience, stay connected with community initiatives and mutualise development costs. A central component of the Museum’s national data hub is Recorder 6, a client-server database software for wildlife recording developed by the National Biodiversity Network in the UK. Today, the Recorder-Lux database contains a large portion of natural heritage information in Luxembourg and is synchronised daily into a publication database connected via the Integrated Publishing Toolkit (IPT) to the Global Biodiversity Information Facility (GBIF). Moreover, Recorder-Lux data is accessible via the national species mapping portal mdata.mnhn.lu which has been developed in-house and is aimed at scientists, professionals and decision makers. The Museum has also developed a set of data entry and upload functionalities on its website data.mnhn.lu using the open source software Indicia, a toolkit that provides a ready-made set of services and tools for online wildlife recording. In 2019, we implement the Atlas of Living Luxembourg (ALL) website all.mnhn.lu, based on the open source Atlas of Living Australia software. ALL is the most comprehensive data portal about natural heritage in Luxembourg, showing specimen data from the museum’s botany, zoology, paleontology, petrology and mineralogy collections as well as fungi, animal and plant observations collected from national and international organisations (via GBIF).<br> Data providers vary from individual scientific collaborators to professional regional record centers or private consultancies working for public administrations. They use different tools offered by the museum to enter, manage and transfer their data to the system. Thus several regional record centers chose the client-server Recorder 6 software to manage and exchange their data, whereas individual scientific collaborators of the Museum enter or upload their data via the online data entry forms available on data.mnhn.lu. For large-scale, long-term, professional biodiversity monitoring and inventories at the national level, specific data entry forms and functionalities have been configured on the Indicia website. Finally, citizens can record species observations via the iNaturalist smartphone app.<br> Due to the museum’s long history of conducting field inventories alongside collating and managing natural history collections, the data hub holds observation and collection data in one database. In 2003, the Museum has developed the Collection Management and Thesaurus extensions for the Recorder 6 software to catalogue, describe and manage specimens in the Museum collections. It allows handling of field-gathered data alongside specimen-specific data such as storage location, specimen type and conservation status. In recent years this has become an essential tool for the increasing effort directed at the digitisation of the diverse natural history collections at the Museum.<br> Our small database team faces the challenge of integrating an ever increasing number of records from a variety of datasets, tools and initiatives. To keep the technical and administrative work as simple as possible we have implemented an open data policy and aim to increase the use of IPT to connect databases instead of physically importing all data into one central database. To improve data quality we focus on training experts to work with our Indicia verification tool.
