The Quadrige Information System, developed by Ifremer, is currently the national reference information system for the management of coastal monitoring data carried out in accordance with the European Union's Water Framework Directive. This Information System, is associated with a Database of the same name, and manages these geolocalized coastal monitoring data, including taxonomic data. Each occurrence corresponds to the observation of a taxon at a given location, at a given time and on a given parameter. Since any data acquisition and banking process may contain errors, the Quadrige Information System integrates various tools and procedures for data qualification. The aim is to detect anomalies in order to correct them and assign a quality level ("Good", "Doubtful", "False") providing users with a confidence level thus a relevance in using those data. However, no such procedure existed for the quality control of taxonomic data, especially for geographic and taxonomic information. In order to overcome this lack, the work I carried out led to a procedure for biogeographical control of taxonomic data. Relevant tests have been identified, and scripts were developed to perform these tests on a selected dataset (phytoplankton from the REPHY network from 2010 to 2020). Results have been used to develop descriptive sheets allowing to run the tests on demand. Some tests have been integrated into existing tools and the result has been ordered and documented to provide the expected qualification procedure. |
