Biophysical feedbacks between the Pleistocene megafauna extinction and climate: The first human‐induced global warming?

@article{Doughty2010BiophysicalFB,
  title={Biophysical feedbacks between the Pleistocene megafauna extinction and climate: The first human‐induced global warming?},
  author={Christopher E. Doughty and Adam Wolf and Christopher B. Field},
  journal={Geophysical Research Letters},
  year={2010},
  volume={37}
}
A large increase in Betula during a narrow 1000 year window, ∼13,800 years before present (YBP) in Alaska and Yukon corresponded in time with the extinction of mammoths and the arrival of humans. Pollen data indicate the increase in Betula during this time was widespread across Siberia and Beringia. We hypothesize that Betula increased due to a combination of a warming climate and reduced herbivory following the extinction of the Pleistocene mega herbivores. The rapid increase in Betula… 
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32 References

New carbon dates link climatic change with human colonization and Pleistocene extinctions

Many new radiocarbon dates are added to those already published on late Pleistocene fossils from Alaska and the Yukon Territory and show previously unrecognized patterns, indicating a radical ecological sorting during a uniquely forage-rich transitional period, affecting all large mammals, including humans.

Pleistocene Megafaunal Collapse, Novel Plant Communities, and Enhanced Fire Regimes in North America

The data suggest that population collapse and functional extinction of the megafauna preceded their final extinction by several thousand years and closely preceded enhanced fire regimes and the development of plant communities that have no modern analogs.

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Rapid body size decline in Alaskan Pleistocene horses before extinction

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Assessing the Causes of Late Pleistocene Extinctions on the Continents

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