How many biodiversity hotspots are there in the world?
Not too many people know the fact that a biodiversity hotspot is a biogeographic region with a significant reservoir of biodiversity that is under threat from humans. There are not too many biodiversity hotspots in the world. In fact, specialists consider that there are approximately 25 areas in the world that can be considered biodiversity hotspots. To qualify as a biodiversity hotspot, a region must meet two strict criteria: it must contain at least 0.5% or 1,500 species of vascular plants as endemics, and it has to have lost at least 70% of its primary vegetation.