NDFF Florabase after 1993

The FLORABASE file consists of observations from 495 sources. These sources include: - The organisation that collected the data (e.g. a provincial authority, the Limburg Natural History Society) - The method used (e.g. a vegetation study, a full area inventory survey, or a monitoring program) - Medium (e.g. digital or paper form or report) - Characterists of the project (e.g. work placement or atlas project) for which the observations were made. Many of these projects employ a standardised method of collecting data, which will be added to the observations in the future. For now, these observations will be categorised as individual observations. Dataset available via https://www.ndff.nl/english / [e-mail] Positive observations without zeros. https://www.ndff.nl/overdendff/validatie/protocollen/12-006-florabase-overige-losse-waarnemingen-na-1993/