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Biodiversity hotspots

Biodiversity hotspots. What is a biodiversity hotspot ?.

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Biodiversity hotspots

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  1. Biodiversityhotspots

  2. What is a biodiversity hotspot ? A biodiversity hotspot is a geographic area containing at least 1,500 endemic plant species, but which has already lost at least 70% of species in their original state. The total area of ​​hot spots is only 2.3% of the surface of the Earth. At present, areas 34 are hot spots. More than 50% of plant species and 42% of terrestrial vertebrate species live in these hot spots.

  3. Where are theylocated ? As you can see there a lot of hot spots, more precisely 34. They are concentrated in the southern hemisphere of the planet

  4. We will look at four hot spots among the 34 identified to understand what are the characteristics of these areas. 4 hot spots are: New Caledonia, Central America, Tropical Andes, the Mediterranean Basin New Caledonia Tropical Andes the Mediterranean Basin Central America

  5. Somestatistics Total number of described species in the world for 6 groups of beings living

  6. Number of identified species and endemic in France 6 for these taxa

  7. New Caledonia

  8. Central America

  9. Andes Tropicales

  10. Mediterranean Basin

  11. Why did we have to protect these areas ? These areas have high biodiversity and high levels of endemism. It means that we encounter in these areas some species that is not found in other places. This can justify that the priority is to protect these areas.

  12. Conclusion Biodiversity is not evenly distributed across Earth. Some areas providean habitat on small areas a high proportion terrestrial biodiversity. These particularly sensitive areas are called hot spots.

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