sábado, 14 de febrero de 2015

Transition from savannah to desert more rapid than previously thought



The Sahara was once a savannah, populated by large herds of wild animal, but today it belongs to the most arid regions of the Earth. Scientists have now discovered that the green vegetation covering the Sahara disappeared much faster than previously assumed. Drastic climate change took place there in the past 10,000 years, in the so-called Holocene. At the beginning of this period, the rainfall amounts were significantly higher than they are today.

The study by researchers from GEOMAR Helmholtz Centre for ocean research in Kiel and the Netherlands Institute for sea research (NIOZ) is now published in the open-access journal PLOS ONE. [...] pasthorizonspr.com / Link 2 (Via B&W3)