Interlaboratory Comparison of Branched GDGT Temperature and pH Proxies Using Soils and Lipid Extracts
Cindy De Jonge
(1)
,
Francien Peterse
(2)
,
Klaas G J Nierop
(2)
,
Thomas M Blattmann
(1)
,
Marcelo Alexandre
(3)
,
Salome Ansanay-Alex
(4)
,
Thomas Austin
(5)
,
Mathieu Babin
(6)
,
Edouard Bard
(7)
,
Thorsten Bauersachs
(8)
,
Jerome Blewett
(9)
,
Brenna Boehman
(10)
,
Isla S Castañeda
(11)
,
Junhui Chen
(12)
,
Martina L G Conti
(13)
,
Sergio Contreras
(14)
,
Julia Cordes
(15)
,
Nina Davtian
(16)
,
Bart van Dongen
(17)
,
Bella Duncan
(18)
,
Felix J Elling
(19)
,
Valier Galy
(10)
,
Shaopeng Gao
(20)
,
Jens Hefter
(21)
,
Kai‐Uwe Hinrichs
(15)
,
Mitchell R Helling
(22)
,
Mariska Hoorweg
(2)
,
Ellen Hopmans
(23)
,
Juzhi Hou
(20)
,
Yongsong Huang
(3)
,
Arnaud Huguet
(24)
,
Guodong Jia
(25)
,
Cornelia Karger
(26)
,
Brendan J Keely
(13)
,
Stephanie Kusch
(6)
,
Hui Li
(25)
,
Jie Liang
(20)
,
Julius S Lipp
(15)
,
Weiguo Liu
(27)
,
Hongxuan Lu
(27)
,
Kai Mangelsdorf
(26)
,
Hayley Manners
(28)
,
Alfredo Martinez Garcia
(29)
,
Guillemette Menot
(4)
,
Gesine Mollenhauer
(21)
,
B. David A. Naafs
(30)
,
Sebastian Naeher
(5)
,
Lauren K O'Connor
(17)
,
Ethan M Pearce
(13)
,
Ann Pearson
(9)
,
Zhiguo Rao
(31)
,
Marta Rodrigo‐Gámiz
(32)
,
Chris Rosendahl
(19)
,
Frauke Rostek
(33)
,
Rui Bao
(34)
,
Prasanta Sanyal
(35)
,
Florence Schubotz
(15)
,
Wesley Scott
(36)
,
Rahul Sen
(35)
,
Appy Sluijs
(2)
,
Rienk Smittenberg
(37)
,
Ioana Stefanescu
(38)
,
Jia Sun
(30)
,
Paul Sutton
(28)
,
Jess Tierney
(39)
,
Eduardo Tejos
(14)
,
Joan Villanueva
(16)
,
Huanye Wang
(27)
,
Josef Werne
(37)
,
Masanobu Yamamoto
(40)
,
Huan Yang
(41)
,
Aifeng Zhou
(42)
1
Geological Institute [ETH Zürich]
2 Department of Earth Sciences [Utrecht]
3 Brown University
4 LGL-TPE - Laboratoire de Géologie de Lyon - Terre, Planètes, Environnement
5 GNS Science [Lower Hutt]
6 ISMER - Institut des Sciences de la MER de Rimouski
7 Collège de France - Chaire Evolution du climat et de l'océan
8 Institute of Geosciences [Kiel]
9 Harvard University
10 WHOI - Woods Hole Oceanographic Institution
11 UMass Amherst - University of Massachusetts [Amherst]
12 FIO - First Institute of Oceanography [Qingdao]
13 Department of Chemistry [York]
14 UCSC - Universidad Católica de la Santísima Concepción
15 MARUM - Center for Marine Environmental Sciences [Bremen]
16 ICTA - Institut de Ciencia i Tecnologia Ambientals
17 EES - Department of Earth and Environmental Sciences [Manchester]
18 Victoria University of Wellington
19 CAU - Christian-Albrechts-Universität zu Kiel = Christian-Albrechts University of Kiel = Université Christian-Albrechts de Kiel
20 CAS - Chinese Academy of Sciences [Beijing]
21 AWI - Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung = Alfred Wegener Institute for Polar and Marine Research = Institut Alfred-Wegener pour la recherche polaire et marine
22 UW - University of Wyoming
23 NIOZ - Royal Netherlands Institute for Sea Research
24 SU - Sorbonne Université
25 State Key Laboratory of Marine Geology [Shanghai]
26 GFZ - German Research Centre for Geosciences - Helmholtz-Centre Potsdam
27 Institute of Earth Environment [Xi’an]
28 Plymouth University
29 MPIC - Max Planck Institute for Chemistry
30 School of Chemistry [Bristol]
31 HNU - Hunan Normal University
32 UGR - Universidad de Granada = University of Granada
33 CEREGE - Centre Européen de Recherche et d'Enseignement des Géosciences de l'Environnement
34 OUC - Ocean University of China
35 IISER Kolkata - Indian Institute of Science Education and Research Kolbata
36 PITT - University of Pittsburgh
37 Department of Geological Sciences [Stockholm]
38 Department of Geology and Geophysics [Laramie]
39 Department of Geosciences [University of Arizona]
40 Hokkaido University [Sapporo, Japan]
41 CUG - China University of Geosciences [Wuhan]
42 Lanzhou University
2 Department of Earth Sciences [Utrecht]
3 Brown University
4 LGL-TPE - Laboratoire de Géologie de Lyon - Terre, Planètes, Environnement
5 GNS Science [Lower Hutt]
6 ISMER - Institut des Sciences de la MER de Rimouski
7 Collège de France - Chaire Evolution du climat et de l'océan
8 Institute of Geosciences [Kiel]
9 Harvard University
10 WHOI - Woods Hole Oceanographic Institution
11 UMass Amherst - University of Massachusetts [Amherst]
12 FIO - First Institute of Oceanography [Qingdao]
13 Department of Chemistry [York]
14 UCSC - Universidad Católica de la Santísima Concepción
15 MARUM - Center for Marine Environmental Sciences [Bremen]
16 ICTA - Institut de Ciencia i Tecnologia Ambientals
17 EES - Department of Earth and Environmental Sciences [Manchester]
18 Victoria University of Wellington
19 CAU - Christian-Albrechts-Universität zu Kiel = Christian-Albrechts University of Kiel = Université Christian-Albrechts de Kiel
20 CAS - Chinese Academy of Sciences [Beijing]
21 AWI - Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung = Alfred Wegener Institute for Polar and Marine Research = Institut Alfred-Wegener pour la recherche polaire et marine
22 UW - University of Wyoming
23 NIOZ - Royal Netherlands Institute for Sea Research
24 SU - Sorbonne Université
25 State Key Laboratory of Marine Geology [Shanghai]
26 GFZ - German Research Centre for Geosciences - Helmholtz-Centre Potsdam
27 Institute of Earth Environment [Xi’an]
28 Plymouth University
29 MPIC - Max Planck Institute for Chemistry
30 School of Chemistry [Bristol]
31 HNU - Hunan Normal University
32 UGR - Universidad de Granada = University of Granada
33 CEREGE - Centre Européen de Recherche et d'Enseignement des Géosciences de l'Environnement
34 OUC - Ocean University of China
35 IISER Kolkata - Indian Institute of Science Education and Research Kolbata
36 PITT - University of Pittsburgh
37 Department of Geological Sciences [Stockholm]
38 Department of Geology and Geophysics [Laramie]
39 Department of Geosciences [University of Arizona]
40 Hokkaido University [Sapporo, Japan]
41 CUG - China University of Geosciences [Wuhan]
42 Lanzhou University
Cindy De Jonge
- Function : Author
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- ORCID : 0000-0002-1127-8433
Francien Peterse
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Thomas M Blattmann
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Thomas Austin
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Edouard Bard
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Thorsten Bauersachs
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Brenna Boehman
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Martina L G Conti
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Sergio Contreras
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Nina Davtian
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Bart van Dongen
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Felix J Elling
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Valier Galy
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Shaopeng Gao
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Kai‐Uwe Hinrichs
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Mitchell R Helling
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Ellen Hopmans
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Juzhi Hou
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Arnaud Huguet
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Stephanie Kusch
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Jie Liang
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Weiguo Liu
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Hongxuan Lu
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Kai Mangelsdorf
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Alfredo Martinez Garcia
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Guillemette Menot
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B. David A. Naafs
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Sebastian Naeher
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Lauren K O'Connor
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Ethan M Pearce
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Marta Rodrigo‐Gámiz
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Prasanta Sanyal
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Florence Schubotz
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Appy Sluijs
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Ioana Stefanescu
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Jess Tierney
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Eduardo Tejos
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Joan Villanueva
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Huanye Wang
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Josef Werne
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Masanobu Yamamoto
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Huan Yang
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Abstract
Ratios of glycerol dialkyl glycerol tetraethers (GDGT), which are membrane lipids of bacteria and archaea, are at the base of several paleoenvironmental proxies. They are frequently applied to soils as well as lake‐ and marine sediments to generate records of past temperature and soil pH. To derive meaningful environmental information from these reconstructions, high analytical reproducibility is required. Based on submitted results by 39 laboratories from across the world, which employ a diverse range of analytical and quantification methods, we explored the reproducibility of brGDGT‐based proxies (MBT′$_{5ME}$, IR, and #rings$_{tetra}$) measured on four soil samples and four soil lipid extracts. Correct identification and integration of 5‐ and 6‐methyl brGDGTs is a prerequisite for the robust calculation of proxy values, but this can be challenging as indicated by the large inter‐interlaboratory variation. The exclusion of statistical outliers improves the reproducibility, where the remaining uncertainty translates into a temperature offset from median proxy values of 0.3–0.9°C and a pH offset of 0.05–0.3. There is no apparent systematic impact of the extraction method and sample preparation steps on the brGDGT ratios. Although reported GDGT concentrations are generally consistent within laboratories, they vary greatly between laboratories. This large variability in brGDGT quantification may relate to variations in ionization efficiency or specific mass spectrometer settings possibly impacting the response of brGDGTs masses relative to that of the internal standard used. While ratio values of GDGT are generally comparable, quantities can currently not be compared between laboratories.
Origin | Publication funded by an institution |
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