![]() ![]() "Until now global evidence to support the climate change argument has been lacking, a large part of existing evidence was based on local or regional estimates between numbers of extinctions, dates of human arrivals and dates of climate change," said Dr Nogues-Bravo. While both of these global change actors played significant roles in species extinction this study reveals that changing climate was a significant force driving this mass extinction. Since then the climate has become warmer, and this changing climate created new opportunities for colonization of new regions by humans. "Why these species became extinct in such large numbers has been hotly debated for over a century."ĭuring the last 50,000 years the global climate became colder and drier, reaching full glacial conditions 21,000 years before present time. "Between 50,000 and 3,000 years before present (BP) 65% of mammal species weighing over 44kg went extinct, together with a lower proportion of small mammals," said lead author Dr David Nogues-Bravo from the Center for Macroecology, Evolution and Climate in University of Copenhagen. ![]()
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