Universität zu Köln

Elling, Felix J. ORCID: 0000-0003-0405-4033, Gottschalk, Julia, Doeana, Katiana D., Kusch, Stephanie ORCID: 0000-0002-2708-4975, Hurley, Sarah J. and Pearson, Ann (2019). Archaeal lipid biomarker constraints on the Paleocene-Eocene carbon isotope excursion. Nat. Commun., 10. LONDON: NATURE PUBLISHING GROUP. ISSN 2041-1723

Full text not available from this repository.

Abstract

A negative carbon isotope excursion recorded in terrestrial and marine archives reflects massive carbon emissions into the exogenic carbon reservoir during the Paleocene-Eocene Thermal Maximum. Yet, discrepancies in carbon isotope excursion estimates from different sample types lead to substantial uncertainties in the source, scale, and timing of carbon emissions. Here we show that membrane lipids of marine planktonic archaea reliably record both the carbon isotope excursion and surface ocean warming during the Paleocene-Eocene Thermal Maximum. Novel records of the isotopic composition of crenarchaeol constrain the global carbon isotope excursion magnitude to -4.0 +/- 0.4 parts per thousand, consistent with emission of >3000 Pg C from methane hydrate dissociation or >4400 Pg C for scenarios involving emissions from geothermal heating or oxidation of sedimentary organic matter. A pre-onset excursion in the isotopic composition of crenarchaeol and ocean temperature highlights the susceptibility of the late Paleocene carbon cycle to perturbations and suggests that climate instability preceded the Paleocene-Eocene Thermal Maximum.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Elling, Felix J. UNSPECIFIED orcid.org/0000-0003-0405-4033 UNSPECIFIED Gottschalk, Julia UNSPECIFIED UNSPECIFIED UNSPECIFIED Doeana, Katiana D. UNSPECIFIED UNSPECIFIED UNSPECIFIED Kusch, Stephanie UNSPECIFIED orcid.org/0000-0002-2708-4975 UNSPECIFIED Hurley, Sarah J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Pearson, Ann UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-131348
DOI:	10.1038/s41467-019-12553-3
Journal or Publication Title:	Nat. Commun.
Volume:	10
Date:	2019
Publisher:	NATURE PUBLISHING GROUP
Place of Publication:	LONDON
ISSN:	2041-1723
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language THERMAL MAXIMUM; TETRAETHER LIPIDS; MEMBRANE-LIPIDS; METHANE RELEASE; DEEP-SEA; MODEL; FRACTIONATION; HYDRATE; CLIMATE; PROXY Multiple languages Multidisciplinary Sciences Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/13134