Abstract
AbstractLarge-scale changes in global climate at the end of the Pleistocene significantly impacted ecosystems across North America. However, the pace and scale of biotic turnover in response to both the Younger Dryas cold period and subsequent Holocene rapid warming have been challenging to assess because of the scarcity of well dated fossil and pollen records that covers this period. Here we present an ancient DNA record from Hall’s Cave, Texas, that documents 100 vertebrate and 45 plant taxa from bulk fossils and sediment. We show that local plant and animal diversity dropped markedly during Younger Dryas cooling, but while plant diversity recovered in the early Holocene, animal diversity did not. Instead, five extant and nine extinct large bodied animals disappeared from the region at the end of the Pleistocene. Our findings suggest that climate change affected the local ecosystem in Texas over the Pleistocene-Holocene boundary, but climate change on its own may not explain the disappearance of the megafauna at the end of the Pleistocene.
Publisher
Springer Science and Business Media LLC
Subject
General Physics and Astronomy,General Biochemistry, Genetics and Molecular Biology,General Chemistry
Reference65 articles.
1. Lund, P. W. Blik paa Brasiliens Dyreverden før sidste Jordomvæltning. (DKVS, Copenhagen, 1838–1845).
2. Koch, P. L. & Barnosky, A. D. Late quaternary extinctions: state of the debate. Annu. Rev. Ecol. Evol. Syst. 37, 215–250 (2006).
3. Waters, M. R., Stafford, T. W., Kooyman, B. & Hills, L. V. Late Pleistocene horse and camel hunting at the southern margin of the ice-free corridor: reassessing the age of Wally’s Beach, Canada. Proc. Natl Acad. Sci. USA 112, 4263–4267 (2015).
4. Martin, P. S. Prehistoric overkill. in Pleistocene Extinctions. The Search for a Cause. (eds. P.S. Martin and H. E. Wright) 75–120 (Yale University Press, 1967).
5. Meltzer, D. J. First Peoples in a New World: Colonizing Ice Age America. (University of California Press, 2009).
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