Many of protected species will die out from a sudden catastrophic event

The Futurist Magazine :
Any species with a population of fewer than 5,000 is just one cataclysm away from disappearance, according to a study by the University of Adelaide and Macquarie University. This finding puts the giant panda, which numbers 1,000–2,000, and the California condor, of which there are only 170 living, deep in the danger zone. Programs that restore large amounts of habitat and strict protection of remaining specimens may bring many back from the brink.