J
Johan W.H. Weijers
Researcher at Royal Dutch Shell
Publications - 47
Citations - 6982
Johan W.H. Weijers is an academic researcher from Royal Dutch Shell. The author has contributed to research in topics: Glacial period & Arctic. The author has an hindex of 33, co-authored 47 publications receiving 6026 citations. Previous affiliations of Johan W.H. Weijers include Utrecht University & University of Bristol.
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Journal ArticleDOI
A novel proxy for terrestrial organic matter in sediments based on branched and isoprenoid tetraether lipids
Ellen C. Hopmans,Johan W.H. Weijers,Enno Schefuß,Lydie Herfort,Jaap S. Sinninghe Damsté,Stefan Schouten +5 more
TL;DR: In this paper, a tracer for terrestrial organic carbon in sediments based on the analysis of tetraether lipids using high-performance liquid chromatography/mass spectrometry (HPLC/MS) was proposed.
Journal ArticleDOI
Environmental controls on bacterial tetraether membrane lipid distribution in soils
Johan W.H. Weijers,Stefan Schouten,Jurgen C. van den Donker,Ellen C. Hopmans,Jaap S. Sinninghe Damsté +4 more
TL;DR: In this paper, the relative distribution of soil-derived GDGT membrane lipids can be used in palaeoenvironmental studies to estimate past annual mean air temperature and soil pH.
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Occurrence and distribution of tetraether membrane lipids in soils : Implications for the use of the TEX86 proxy and the BIT index
TL;DR: In this paper, a diverse collection of globally distributed soil samples was analyzed for its glycerol dialkyl glycerolic tetraether (GDGT) membrane lipid content, and it was shown that branched GDGTs, derived from anaerobic soil bacteria, were the most dominant and were found in all soils.
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Membrane lipids of mesophilic anaerobic bacteria thriving in peats have typical archaeal traits
Johan W.H. Weijers,Stefan Schouten,Ellen C. Hopmans,Jan A. J. Geenevasen,Olivier David,Joanna M. Coleman,Rich D Pancost,Jaap S. Sinninghe Damsté +7 more
TL;DR: It is shown that a new group of membrane-spanning GDGT lipids, containing branched instead of isoprenoid carbon skeletons, are of a bacterial origin and unequivocal evidence for the presence of cyclopentyl moieties in these bacterial membrane lipids was obtained by NMR.
Journal ArticleDOI
Revised calibration of the MBT–CBT paleotemperature proxy based on branched tetraether membrane lipids in surface soils
Francien Peterse,J. van der Meer,Stefan Schouten,Johan W.H. Weijers,Noah Fierer,Noah Fierer,Robert B. Jackson,Jung-Hyun Kim,J.S. Sinninghe Damsté +8 more
TL;DR: The MBT-CBT proxy for the reconstruction of paleotemperatures and past soil pH is based on the distribution of branched glycerol dialkyl glyceroline tetraether (brGDGT) membrane lipids as mentioned in this paper.