Tropics are main source of global mammal diversity
Wednesday, January 29, 2014 - 08:00
in Biology & Nature
Scientists recognize that some regions contain more species than others, and that the tropics are richer in biodiversity than temperate regions. But why are there more species in the tropics? A new study scrutinizes most of the living mammalian species and reveals a two-fold mechanism; the rate at which mammals arose was higher in the tropics, and the rate at which they became extinct lower.