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IMAGE: Recently collected cores sit in the back of an old truck after they were drilled from an ancient lake bed in Afar, Ethiopia.
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Credit: Sarah Ivory, Penn State
Ancient pollen samples and a new statistical approach may shed light on the global rate of change of vegetation and eventually on how much climate change and humans have played a part in altering landscapes, according to an international team of researchers.
We know that climate and people interact with natural ecosystems and change them, said Sarah Ivory, assistant professor of geosciences and associate in the Earth and Environmental Systems Institute, Penn State. Typically, we go to some particular location and study this by teasing apart these influences. In particular, we know that the impact people have goes back much earlier than what is typically accepted as the case. However, we haven t been able to observe the patterns created by these processes globally or l ....

United States , Czech Republic , Noord Holland , Australian Capital Territory , Simon Heberle , Simon Goring , Alastair Wr Seddon , Petr Kune , Steffen Wolters , Kuberp Bhatta , Thomas Giesecke , Sarah Ivory , Viviana Felde , Suzette Ga Flantua , Johnw Williams , Henry Hoogheimstra , Ericc Grimm , Department Of Botany , Lower Saxony Institute For Historical Coastal Research , Australian National University , University Of Utrecht , University Of Amsterdam , University Of Bergen , Institute Of Biodiversity , University Of Wisconsin , Climatic Research ,