No causal link between terrestrial ecosystem change and methane release during the end-Triassic mass extinction

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No causal link between terrestrial ecosystem change and methane release during the end-Triassic mass extinction. / Lindström, Sofie; van de Schootbrugge, Bas; Dybkjær, Karen; Pedersen, Gunver Krarup; Fiebig, Jens; Nielsen, Lars Henrik; Richoz, Sylvain.

In: Geology, Vol. 40, No. 6, 01.06.2012, p. 531-534.

Research output: Contribution to journalArticle

Harvard

Lindström, S, van de Schootbrugge, B, Dybkjær, K, Pedersen, GK, Fiebig, J, Nielsen, LH & Richoz, S 2012, 'No causal link between terrestrial ecosystem change and methane release during the end-Triassic mass extinction', Geology, vol. 40, no. 6, pp. 531-534. https://doi.org/10.1130/G32928.1

APA

Lindström, S., van de Schootbrugge, B., Dybkjær, K., Pedersen, G. K., Fiebig, J., Nielsen, L. H., & Richoz, S. (2012). No causal link between terrestrial ecosystem change and methane release during the end-Triassic mass extinction. Geology, 40(6), 531-534. https://doi.org/10.1130/G32928.1

CBE

Lindström S, van de Schootbrugge B, Dybkjær K, Pedersen GK, Fiebig J, Nielsen LH, Richoz S. 2012. No causal link between terrestrial ecosystem change and methane release during the end-Triassic mass extinction. Geology. 40(6):531-534. https://doi.org/10.1130/G32928.1

MLA

Vancouver

Lindström S, van de Schootbrugge B, Dybkjær K, Pedersen GK, Fiebig J, Nielsen LH et al. No causal link between terrestrial ecosystem change and methane release during the end-Triassic mass extinction. Geology. 2012 Jun 1;40(6):531-534. https://doi.org/10.1130/G32928.1

Author

Lindström, Sofie ; van de Schootbrugge, Bas ; Dybkjær, Karen ; Pedersen, Gunver Krarup ; Fiebig, Jens ; Nielsen, Lars Henrik ; Richoz, Sylvain. / No causal link between terrestrial ecosystem change and methane release during the end-Triassic mass extinction. In: Geology. 2012 ; Vol. 40, No. 6. pp. 531-534.

RIS

TY - JOUR

T1 - No causal link between terrestrial ecosystem change and methane release during the end-Triassic mass extinction

AU - Lindström, Sofie

AU - van de Schootbrugge, Bas

AU - Dybkjær, Karen

AU - Pedersen, Gunver Krarup

AU - Fiebig, Jens

AU - Nielsen, Lars Henrik

AU - Richoz, Sylvain

PY - 2012/6/1

Y1 - 2012/6/1

N2 - Profound changes in both marine and terrestrial biota during the end-Triassic mass extinction event and associated successive carbon cycle perturbations across the Triassic-Jurassic boundary (T-J, 201.3 Ma) have primarily been attributed to volcanic emissions from the Central Atlantic Magmatic Province and/or injection of methane. Here we present a new extended organic carbon isotope record from a cored T-J boundary succession in the Danish Basin, dated by high-resolution palynostratigraphy and supplemented by a marine faunal record. Correlated with reference C-isotope and biotic records from the UK, it provides new evidence that the major biotic changes, both on land and in the oceans, commenced prior to the most prominent negative C-isotope excursion. If massive methane release was involved, it did not trigger the end-Triassic mass extinction. Instead, this negative C-isotope excursion is contemporaneous with the onset of floral recovery on land, whereas marine ecosystems remained perturbed. The decoupling between ecosystem recovery on land and in the sea is more likely explained by long-term flood basalt volcanism releasing both SO2 and CO2 with short- and long-term effects, respectively.

AB - Profound changes in both marine and terrestrial biota during the end-Triassic mass extinction event and associated successive carbon cycle perturbations across the Triassic-Jurassic boundary (T-J, 201.3 Ma) have primarily been attributed to volcanic emissions from the Central Atlantic Magmatic Province and/or injection of methane. Here we present a new extended organic carbon isotope record from a cored T-J boundary succession in the Danish Basin, dated by high-resolution palynostratigraphy and supplemented by a marine faunal record. Correlated with reference C-isotope and biotic records from the UK, it provides new evidence that the major biotic changes, both on land and in the oceans, commenced prior to the most prominent negative C-isotope excursion. If massive methane release was involved, it did not trigger the end-Triassic mass extinction. Instead, this negative C-isotope excursion is contemporaneous with the onset of floral recovery on land, whereas marine ecosystems remained perturbed. The decoupling between ecosystem recovery on land and in the sea is more likely explained by long-term flood basalt volcanism releasing both SO2 and CO2 with short- and long-term effects, respectively.

U2 - 10.1130/G32928.1

DO - 10.1130/G32928.1

M3 - Article

VL - 40

SP - 531

EP - 534

JO - Geology

JF - Geology

SN - 0091-7613

IS - 6

ER -