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Increased fire activity at the Triassic/Jurassic boundary in Greenland due to climate-driven floral change

Abstract

One of the largest mass extinctions of the past 600 million years (Myr) occurred 200 Myr ago, at the Triassic/Jurassic boundary. The major floral and faunal turnovers1 have been linked to a marked increase in atmospheric carbon dioxide levels2, probably resulting from massive volcanism in the Central Atlantic Magmatic Province3,4. Future climate change predictions suggest that fire activity may increase5, in part because higher global temperatures are thought to increase storminess6,7. Here we use palaeontological reconstructions of the fossil flora from East Greenland to assess forest flammability along with records of fossil charcoal preserved in the rocks to show that fire activity increased markedly across the Triassic/Jurassic boundary. We find a fivefold increase in the abundance of fossil charcoal in the earliest Jurassic, which we attribute to a climate-driven shift from a prevalence of broad-leaved taxa to a predominantly narrow-leaved assemblage. Our fire calorimetry experiments show that narrow leaf morphologies are more flammable than broad-leaved morphologies. We suggest that the warming associated with increased atmospheric carbon dioxide levels favoured a dominance of narrow-leaved plants, which, coupled with more frequent lightening strikes, led to an increase in fire activity at the Triassic/Jurassic boundary.

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Figure 1: Correlation of Astartekløft to TJB sections in the UK (St Audries Bay) and Austria (Hochalplgraben).
Figure 2: Stratigraphy, proportions of broad versus narrow leaves and fire activity at Astartekløft.
Figure 3: Box and whisker plots of flammability data produced by the FPA.

References

  1. McElwain, J. C., Popa, M. E., Hesselbo, S. P., Haworth, M. & Surlyk, F. Macroecological responses of terrestrial vegetation to climatic and atmospheric change across the Triassic/Jurassic boundary in East Greenland. Paleobiology 33, 547–573 (2007).

    Article  Google Scholar 

  2. McElwain, J. C., Beerling, D. J. & Woodward, F. I. Fossil plants and global warming at the Triassic–Jurassic boundary. Science 285, 1386–1390 (1999).

    Article  Google Scholar 

  3. Van de Schootbrugge, B. et al. Floral changes across the Triassic/Jurassic boundary linked to flood basalt volcanism. Nature Geosci. 2, 589–594 (2009).

    Article  Google Scholar 

  4. Whiteside, J. H., Olsen, O. E., Eglinton, T., Brookfield, M. E. & Sambrotto, R. N. Compound-specific carbon isotopes from Earth’s largest flood basalt eruptions directly linked to the end-Triassic mass extinction. Proc. Natl Acad. Sci. 15, 6721–6725 (2010).

    Article  Google Scholar 

  5. Price, C. & Rind, D. The impact of 2×CO2 climate on lightning-caused fires. J. Clim. 7, 1484–1494 (1994).

    Article  Google Scholar 

  6. Price, C. Evidence for a link between global lightning activity and upper tropospheric water vapour. Nature 406, 290–293 (2000).

    Article  Google Scholar 

  7. Reeve, N. & Toumi, R. Lightning activity as an indicator of climate change. Q. J. R. Meteorol. Soc. 125, 893–903 (1999).

    Article  Google Scholar 

  8. Scott, A. C. The pre-quaternary history of fire. Palaeogeogr. Palaeoclimatol. Palaeoecol. 164, 281–329 (2000).

    Article  Google Scholar 

  9. Carcaillet, C. et al. Change of fire frequency in the eastern Canadian boreal forests during the Holocene: Does vegetation composition or climate trigger the fire regime? J. Ecol. 89, 930–946 (2001).

    Article  Google Scholar 

  10. Marynowski, L. & Simoneit, B. R. T. Widespread upper Triassic to lower Jurassic wildfire records from Poland: Evidence from charcoal and pyrolytic polycyclic aromatic hydrocarbons. Palaios 24, 785–798 (2009).

    Article  Google Scholar 

  11. Cornelissen, J. H. C. et al. A handbook of protocols for standardised and easy measurement of plant functional traits worldwide. Aust. J. Bot. 51, 335–380 (2003).

    Article  Google Scholar 

  12. Bond, W. J. & van Wilgren, B. W. Population and Community Biology Series Vol. 14 (Chapman and Hall, 1996).

    Google Scholar 

  13. Torero, J. L. SFPE Handbook 4th edn (SFPE, 2008).

    Google Scholar 

  14. Schemel, C. F., Simeoni, A., Biteau, H., Rivera, J. D. & Torero, J. L. A calorimetric study of wildland fuels. Exp. Therm. Fluid Sci. 32, 1381–138 (2008).

    Article  Google Scholar 

  15. Drysdale, D. An Introduction to Fire Dynamics (Wiley, 1998).

    Google Scholar 

  16. McElwain, J. C., Wagner, P. J. & Hesselbo, S. P. Fossil plant relative abundances indicate sudden loss of late Triassic biodiversity in East Greenland. Science 324, 1554–1556 (2009).

    Article  Google Scholar 

  17. Huynh, T. T. & Poulsen, C. J. Rising atmospheric CO2 as a possible trigger for the end-Triassic mass extinction. Palaeogeogr. Palaeoclimatol. Palaeoecol. 217, 223–242 (2005).

    Article  Google Scholar 

  18. Ivany, L. C. & Salawitch, R. J. Carbon isotopic evidence for biomass burning at the K-T boundary. Geology 21, 487–490 (1993).

    Article  Google Scholar 

  19. Harris, T. M. The Rhaetic flora of Scoresby Sound, East Greenland. Medd. Grønl. 68, 1–43 (1926).

    Google Scholar 

  20. Harris, T. M. The fossil flora of Scoresby Sound, East Greenland, Part 4. Ginkgoales, Lycopodiales and isolated fructifications. Medd. Grønl. 112, 1–121 (1935).

    Google Scholar 

  21. Kürschner, W. M., Bonis, N. R. & Krystyn, L. Carbon-isotope stratigraphy and palynostratigraphy of the Triassic–Jurassic transition in the Tiefengraben section—Northern Calcareous Alps (Austria). Palaeogeogr. Palaeoclimatol. Palaeoecol. 244, 257–280 (2007).

    Article  Google Scholar 

  22. Bonis, N. R., Kürschner, W. M. & Krystyn, L. A detailed palynological study of the Triassic–Jurassic transition in key sections of the Eiberg Basin (Northern Calcareous Alps, Austria). Rev. Palaeobot. Palynol. 156, 376–400 (2009).

    Article  Google Scholar 

  23. Hesselbo, S. P., Robinson, S. A., Surlyk, F. & Piasecki, S. Terrestrial and marine extinction at the Triassic–Jurassic boundary synchronized with major carbon-cycle perturbation: A link to initiation of massive volcanism. Geology 30, 251–254 (2002).

    Article  Google Scholar 

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Acknowledgements

We thank J. Torero for providing access to test facilities and institutional support and R. Hadden for help in the FireLab at the University of Edinburgh. Thanks to P. Thomas (Royal Botanic Gardens, Edinburgh) for providing modern vegetation samples. L.M. thanks W. M. Kürschner for palynological guidance. We thank M. Popa for sample collection and floral taxonomy of the East Greenland samples, F. Surlyk and N. Nøe-Nygaard for their aid in C.M.B.’s and L.M.’s 2009 Greenland field season and also D. Sunderlin’s and F. Surlyk’s contributions during a 2004 field season. Technical assistance from B. Moran (UCD) and N. Welters and J. van Tongeren (Utrecht University) is gratefully acknowledged, as is that of P. Ditchfield (University of Oxford). We thank A. McGowan for comments that we feel improved the quality of the manuscript. We acknowledge financial support through a European Union Marie Curie Excellence Grant (MEXT-CT-2006-042531) and the National Geographic Society (7038-01) for funding the 2002 expedition.

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C.M.B. conducted charcoal and fossil flora flammability analysis. L.M. conducted the palynological analyses. C.M.B., F.X.J. and G.R. conducted flammability tests on modern plants. S.P.H. conducted carbon isotope analyses. M.H. provided information on modern equivalents of the TJB flora. J.C.M. provided plant macrofossil abundance data and bulk sediment samples from Astartekløft. I.J.G. and S.P.H. provided field observational data from S. Tancrediakløft. C.M.B. analysed data and wrote the manuscript. C.M.B. and L.M. drafted the figures. All other authors contributed to editing the manuscript.

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Correspondence to Claire M. Belcher.

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The authors declare no competing financial interests.

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Belcher, C., Mander, L., Rein, G. et al. Increased fire activity at the Triassic/Jurassic boundary in Greenland due to climate-driven floral change. Nature Geosci 3, 426–429 (2010). https://doi.org/10.1038/ngeo871

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