VVF: integrating modelling and GIS in a software tool for habitat suitability assessment

A computer program, VVF, has been developed to assess the suitability of a territory as habitat for a species. It integrates several types of Habitat Suitability models into a Geographical Information System. In addition to standard GIS functions, VVF allows a user to create, modify and store new Habitat Suitability models for different species, to create Habitat Suitability maps by running Habitat Suitability models for specific areas, and to process these maps. The program requires only basic GIS knowledge and is very flexible, so as to guarantee a broad applicability. VVF is aimed at assisting public decision-makers and conservation biologists to assess the viability of endangered and threatened species, to evaluate policies and plans for wildlife management, as well as species translocations, reserve design and habitat protection. VVF can also be used in Environmental Impact Assessment. In this paper, VVF is demonstrated with an application for Ibex.  1999 Elsevier Science Ltd. All rights reserved.