To meet these objectives, we will need three basic layers of information: 1) Land cover, 2) Vertebrate species distributions and 3) Land management status. In the most general of terms, we develop a vegetation map which we then use to model vertebrate distributions. By combining vertebrate distribution maps together we have maps of biodiversity. The overlay of the land management status map on maps of biodiversity is the final step. Here, we can identify areas of either high or critical biodiversity that are unprotected. Hence, we identify the "gaps".