Database for floristic research: An example for the Matese Massif in Campania

A floristic geodatabase concerning the Matese Massif and the derived spatial analysis of species distribution are described. The geodatabase uses the primary data stored in a floristic relational database developed and implemented in the Environmental Botany Laboratory in Caserta. Floristic data reported in 1) recent ('900) and past ('800) papers, 2) floristic data of Gussone Generale and Loreto Grande Collections (NAP) and 3) unpublished results of recent researches have been stored into the relational database. The sampling areas reported in literature and herbaria collections have been critically revised and, where possible, georeferred in GIS environment using point and lines; buffer areas were then automatically generated having a surface value in inverse relation to the accuracy of raw data. The flora of all Matese Massif and that one of the side belonging to Campania region resulted of 1243 and 1013 taxa respectively; in the database 3989 (2362 relative to Campania) records were stored. Floristic maps and statistics regarding species distribution have been obtained; derived maps (density of taxa) overlaying a regular grid are described too. A list of the critical taxa is also reported with comments. The resulting geodatabase represents a useful tool for both planning of new floristic research (i.e. the annual excursion of the Floristic working group of Italian Botanical Society) and biodiversity management and preservation for end users such as territorial authorities dealing with spatial planning in protected areas.