Articles by Gerardo Ceballos, Paul R. Ehrlich and Rodolfo Dirzo
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Biological Annihilation via the Ongoing Sixth Mass Extinction Signaled by Vertebrate Population Losses and Declines
Gerardo Ceballos, Paul R. Ehrlich and Rodolfo Dirzo | National Academy of Sciences – TRANSCEND Media Service,
17 Jul 2017
Using a sample of 27,600 terrestrial vertebrate species, and a more detailed analysis of 177 mammal species, we show the extremely high degree of population decay in vertebrates, even in common “species of low concern.” Dwindling population sizes and range shrinkages amount to a massive anthropogenic erosion of biodiversity and of the ecosystem services essential to civilization. This “biological annihilation” underlines the seriousness for humanity of Earth’s ongoing sixth mass extinction event.
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