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Megafaunal isotopes reveal role of increased moisture on rangeland during late Pleistocene extinctions

A Corrigendum to this article was published on 05 June 2017

Abstract

The role of environmental change in the late Pleistocene megafaunal extinctions remains a key question, owing in part to uncertainty about landscape changes at continental scales. We investigated the influence of environmental changes on megaherbivores using bone collagen nitrogen isotopes (n = 684, 63 new) as a proxy for moisture levels in the rangelands that sustained late Pleistocene grazers. An increase in landscape moisture in Europe, Siberia and the Americas during the Last Glacial–Interglacial Transition (LGIT; ~25–10 kyr bp) directly affected megaherbivore ecology on four continents, and was associated with a key period of population decline and extinction. In all regions, the period of greatest moisture coincided with regional deglaciation and preceded the widespread formation of wetland environments. Moisture-driven environmental changes appear to have played an important part in the late Quaternary megafaunal extinctions through alteration of environments such as rangelands, which supported a large biomass of specialist grazers. On a continental scale, LGIT moisture changes manifested differently according to regional climate and geography, and the stable presence of grasslands surrounding the central forested belt of Africa during this period helps to explain why proportionally fewer African megafauna became extinct during the late Pleistocene.

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Figure 1: Reconstructed moisture levels.
Figure 2: A series of landscape cartoons illustrating the interaction between δ15N values of preferred graze, soil moisture balance and the moisture–boon–replacement model9,11,12.

References

  1. 1

    Cooper, A. et al. Abrupt warming events drove late Pleistocene Holarctic megafaunal turnover. Science 349, 602–606 (2015).

    CAS  Article  Google Scholar 

  2. 2

    Metcalf, J. L. et al. Synergistic roles of climate warming and human occupation in Patagonian megafaunal extinctions. Sci. Adv. 2, e1501682 (2016).

    Article  Google Scholar 

  3. 3

    Barnosky, A. D., Koch, P. L., Feranec, R. S., Wing, S. L. & Shabel, A. B. Assessing the causes of late Pleistocene extinctions on the continents. Science 306, 70–75 (2004).

    CAS  Article  Google Scholar 

  4. 4

    Willerslev, E. et al. Fifty thousand years of Arctic vegetation and megafaunal diet. Nature 506, 47–51 (2014).

    CAS  Article  Google Scholar 

  5. 5

    Bocherens, H., Drucker, D. G. & Madelaine, S. Evidence for a δ15N positive excursion in terrestrial foodwebs at the Middle to Upper Palaeolithic transition in south-western France: implications for early modern human palaeodiet and palaeoenvironment. J. Hum. Evol. 69, 31–43 (2014).

    Article  Google Scholar 

  6. 6

    Guthrie, R. D. New carbon dates link climatic change with human colonization and Pleistocene extinctions. Nature 441, 207–209 (2006).

    CAS  Article  Google Scholar 

  7. 7

    Guthrie, R. D. Rapid body size decline in Alaskan Pleistocene horses before extinction. Nature 426, 169–171 (2003).

    Article  Google Scholar 

  8. 8

    Gross, M. Megafauna moves nutrients uphill. Curr. Biol. 26, R1–R5 (2016).

    CAS  Article  Google Scholar 

  9. 9

    Guthrie, R. D. Frozen Fauna of the Mammoth Steppe. The Story of Blue Babe (Chicago Univ. Press, 1990).

    Book  Google Scholar 

  10. 10

    Guthrie, R. D. Origin and causes of the mammoth steppe: a story of cloud cover, woolly mammal tooth pits, buckles, and inside-out Beringia. Quat. Sci. Rev. 20, 549–574 (2001).

    Article  Google Scholar 

  11. 11

    Zimov, S. A. et al. Steppe–tundra transition: a herbivore-driven biome shift at the end of the Pleistocene. Am. Nat. 146, 765–794 (1995).

    Article  Google Scholar 

  12. 12

    Mann, D. H., Groves, P., Kunz, M. L., Reanier, R. E. & Gaglioti, B. V. Ice-age megafauna in Arctic Alaska: extinction, invasion, survival. Quat. Sci. Rev. 70, 91–108 (2013).

    Article  Google Scholar 

  13. 13

    Whittaker, R. H. Classification of natural communities. Bot. Rev. 28, 1–239 (1962).

    Article  Google Scholar 

  14. 14

    Handley, L. et al. The 15N natural abundance (δ15N) of ecosystem samples reflects measures of water availability. Funct. Plant Biol. 26, 185–199 (1999).

    Article  Google Scholar 

  15. 15

    Murphy, B. P. & Bowman, D. M. Kangaroo metabolism does not cause the relationship between bone collagen δ15N and water availability. Funct. Ecol. 20, 1062–1069 (2006).

    Article  Google Scholar 

  16. 16

    Hedges, R. E., Stevens, R. E. & Richards, M. P. Bone as a stable isotope archive for local climatic information. Quat. Sci. Rev. 23, 959–965 (2004).

    Article  Google Scholar 

  17. 17

    Heaton, T. H., Vogel, J. C., von La Chevallerie, G. & Collett, G. Climatic influence on the isotopic composition of bone nitrogen. Nature 322, 822–823 (1986).

    CAS  Article  Google Scholar 

  18. 18

    Fox-Dobbs, K., Leonard, J. A. & Koch, P. L. Pleistocene megafauna from eastern Beringia: paleoecological and paleoenvironmental interpretations of stable carbon and nitrogen isotope and radiocarbon records. Palaeogeogr. Palaeoclimatol. Palaeoecol. 261, 30–46 (2008).

    Article  Google Scholar 

  19. 19

    Stevens, R. E. & Hedges, R. E. Carbon and nitrogen stable isotope analysis of northwest European horse bone and tooth collagen, 40,000 BP–present: palaeoclimatic interpretations. Quat. Sci. Rev. 23, 977–991 (2004).

    Article  Google Scholar 

  20. 20

    Drucker, D. G., Bocherens, H. & Billiou, D. Evidence for shifting environmental conditions in southwestern France from 33,000 to 15,000 years ago derived from carbon-13 and nitrogen-15 natural abundances in collagen of large herbivores. Earth Planet. Sci. Lett. 216, 163–173 (2003).

    CAS  Article  Google Scholar 

  21. 21

    Prado, J. L., Martinez-Maza, C. & Alberdi, M. T. Megafauna extinction in South America: a new chronology for the Argentine pampas. Palaeogeogr. Palaeoclimatol. Palaeoecol. 425, 41–49 (2015).

    Article  Google Scholar 

  22. 22

    Mann, D. H. et al. Life and extinction of megafauna in the ice-age Arctic. Proc. Natl Acad. Sci. USA 112, 14301–14306 (2015).

    CAS  Article  Google Scholar 

  23. 23

    MacDonald, G. et al. Pattern of extinction of the woolly mammoth in Beringia. Nat. Commun. 3, 893 (2012).

    CAS  Article  Google Scholar 

  24. 24

    Allen, J. R. et al. Rapid environmental changes in southern Europe during the last glacial period. Nature 400, 740–743 (1999).

    CAS  Article  Google Scholar 

  25. 25

    Moreno, P. I. et al. Radiocarbon chronology of the last glacial maximum and its termination in northwestern Patagonia. Quat. Sci. Rev. 122, 233–249 (2015).

    Article  Google Scholar 

  26. 26

    Raghavan, M., Themudo, G. E., Smith, C. I., Zazula, G. & Campos, P. F. Musk ox (Ovibos moschatus) of the mammoth steppe: tracing palaeodietary and palaeoenvironmental changes over the last 50,000 years using carbon and nitrogen isotopic analysis. Quat. Sci. Rev. 102, 192–201 (2014).

    Article  Google Scholar 

  27. 27

    Faith, J. T. late Pleistocene and Holocene mammal extinctions on continental Africa. Earth Sci. Rev. 128, 105–121 (2014).

    Article  Google Scholar 

  28. 28

    Tocheri, M. W. et al. The evolutionary origin and population history of the grauer gorilla. Am. J. Phys. Anthropol. 159, S4–S18 (2016).

    Article  Google Scholar 

  29. 29

    Dobrynin, P. et al. Genomic legacy of the African cheetah, Acinonyx jubatus. Genome Biol. 16, 1–20 (2015).

    Article  Google Scholar 

  30. 30

    Miller, G. H., Fogel, M. L., Magee, J. W. & Gagan, M. K. Disentangling the impacts of climate and human colonization on the flora and fauna of the Australian arid zone over the past 100 ka using stable isotopes in avian eggshell. Quat. Sci. Rev. 151, 27–57 (2016).

    Article  Google Scholar 

Download references

Acknowledgements

We are indebted to the following museums, curators and miners for assistance with samples, advice and encouragement: Canadian Museum of Nature (R. Harington), American Museum of Natural History (R. Tedford), Royal Alberta Museum (J. Burns), Natural History Museum London (A. Currant), Yukon Heritage Centre (J. Storer), University of Alaska, Fairbanks (D. Guthrie, P. Matheus), Institute of Plant and Animal Ecology, RAS Yekaterinburg (P. Kosintsev), Laboratory of Prehistory, St Petersburg (V. Doronichev and L. Golovanova), and a range of Yukon miners including B. and R. Johnson, the Christie family, K. Tatlow and S. and N. Schmidt. We also thank T. Faith, C. Turney, B. Shapiro, D. Froese, M. Richards, A. Sher, J. Glimmerveen, G. Larson, E. Willerslev, R. Barnett and members of ACAD (Australian Centre for Ancient DNA) for assistance with sampling and analysis. We particularly thank NRCF and the Oxford Radiocarbon Accelerator Unit (T. Higham). This work was funded by grants and fellowships from the Australian Research Council (DP140104233 and LF140100260) and UK Natural Environment Research Council to A.C. Work contributed by H.J. was supported by the Research Council of Norway through its Centres of Excellence funding scheme, project number 223272. Work contributed by M.J.W. was supported by NSF project numbers PLR 1204233 and PLR 0909527.

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A.C. conceived the project, collected samples and coordinated laboratory work. M.T.R.-W. compiled data from the literature, conceived and implemented analyses, and constructed the figures. All authors contributed to data interpretation. The manuscript was written by M.T.R.-W. and A.C., with input from all authors.

Corresponding authors

Correspondence to M. Timothy Rabanus-Wallace or Alan Cooper.

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The authors declare no competing financial interests.

Supplementary information

Supplementary Information

Supplementary Methods 1–3; Supplementary Text 1–5; Supplementary Figures 1–20; Supplementary References 1–5; Supplementary Code; Supplementary Bibliography (PDF 1561 kb)

Supplementary Dataset 1

Dataset used in analysis. (XLSX 109 kb)

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Rabanus-Wallace, M., Wooller, M., Zazula, G. et al. Megafaunal isotopes reveal role of increased moisture on rangeland during late Pleistocene extinctions. Nat Ecol Evol 1, 0125 (2017). https://doi.org/10.1038/s41559-017-0125

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