Atlas de la Biodiversitat ForestalContracts and agreementsProject duration: Jan 2006 to Dec 2008An ATLAS of the woody species present in Catalan forests is being compiled on the basis of data from the Ecological and Forest Inventory of Catalonia (IEFC, which was created by CREAF and completed in 1998) and additional data, thanks to the digital information available from GISs. IntroductionThe large quantity of information collected by the IEFC and in the Third National Forest Inventory (IFN3) enables us to carry out a detailed analysis of the current distribution of 74 woody species in forest habitats throughout the Catalan territory. Moreover, thanks to the GIS programs it is possible to relate this information to environmental, landscape and biotic variables (such as climate, topography and forest structure) and to obtain an ecological description of the habitat currently inhabited by these species. The Atlas reproduces the information currently available on the ecophysiological characteristics and the life cycle of species. Secondly, a computer application is being developed to evaluate the biodiversity of Catalan forests. By means of statistical analysis, it is possible to obtain values for the maximum number of woody species likely to be found at any given point within the territory, depending on its topographical, climatic and structural characteristics. The transformation of these results into an easy-to-use computer application that is universally available on the internet provides a useful tool for evaluating the current state of any plot as the result of the management of Catalan forests. Finally, an analysis is being carried out of diverse aspects of the relationship between the richness of woody species and other topics.Conclusions Other projects in the same field Ecological networks and species interactions Ecological consequences of bird extinctions Climate change Elaboration of the dissemination document on the state of the natural environment in the Network of Natural Parks of the Diputació de Barcelona.