Royal Netherlands Institute for Sea Research
Phone number
+31 (0)222 36 9432
Location
Texel
Function
Head of Analytical Laboratory
Expertise
  • Liquid chromatography-mass spectrometry
  • Development of analytical methods for lipid biomarkers
  • Marine lipidomics

Dr. Ellen Hopmans

Head of Analytical Laboratory

Searching for “something” in a haystack on the seafloor

Analytical chemist Ellen Hopmans develops techniques to measure various molecules in minuscule quantities, in material from the ocean floor, for example. ‘The main group of substances I am searching for are lipids. These are fatty substances that are produced by all living organisms. For example, when an alga dies and sinks to the floor, the lipids from those cells can literally be found millions of years later. Research on fossil lipids can therefore tell us something about the organisms that lived during a certain period and thereby something about the climate in that period.’

From algae to forest fires

‘I make use of various techniques, such as liquid chromatography, to very precisely separate the substances in a mixture. I subsequently send the separated substances to a mass spectrometer with which the mass and therefore the identity of the substance can be derived. Unfortunately, that sounds far simpler than it actually is. If a fellow researcher comes with the question as to whether I can analyse a specific molecule or a mixture of molecules from certain algae in a seafloor sample, then that usually involves a lot of puzzling beforehand. The ratio of molecules or their structure can change over the course of time, as a result of which the puzzle can become far more complex.’

‘Besides lipids, which say something about organisms that lived in a certain period, we can also search for the remains of combusted carbohydrates, such as levoglucosan. With that, we can obtain indications about large-scale forest fires in the past, which in turn also tell us something about the climate.’

Big Data

‘Nowadays, instead of searching for a specific molecule, we increasingly often analyse patterns in complex mixtures of substances. We subsequently let a computer search in the list of thousands and thousands of results to discover what is interesting in that proverbial Big Data. Whereas in the past, we at least knew which needle we were searching for in a haystack, now we are searching for a needle that we do not even know about. We know that a lot of information about the climate from the past is contained in that haystack, but we now depend on the computer to discover what it looks like. The computer basically holds an enormous magnet above the haystack to help us find the needle.’

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Research interests & personal motivation

Advancing analytical techniques for lipid biomarkers for use in paleoproxies and studies of the origin and fate of organic material in the marine realm.

Working in the lab.

Linked news

Wednesday 05 June 2024
Deep sea microbes can adapt their basic building blocks
Every microbe uses the element phosphorus to build its outer protective layer. Just like all cells in our human body. But what if there is almost no phosphorus available, which is the case in some areas of the deep sea? An international team lead by…
Friday 24 May 2024
30 million for research into acceleration of climate change
Climate change can be accelerated by feedback mechanisms: complex phenomena caused by climate change that in turn can further drive climate change. One example is the additional CO2 emissions from thawing permafrost. Research into the influence of…
Monday 25 March 2024
Additional nutrients intensify dead zones in oceans
As more and more nutrients from land and air enter the world’s oceans, the dead zones without oxygen in the water will increase in size and intensity. That is the warning that PhD student Zoë van Kemenade, an organic geochemist at NIOZ, draws from…
Friday 04 February 2022
“Taste” and “smell” of coral reefs provide insights into dynamic marine ecosystems
Coral reefs are hotspots of biodiversity and are amazingly productive with a vast number of organisms interacting simultaneously. Hundreds of molecules that are made by important members of the coral reef community were recently discovered by a team…
Wednesday 16 September 2020
Discovery of microbes with 'mixed skins' sheds new light on early evolution of life
Current research suggests that more complex life-forms, including humans, evolved from a symbiosis event of Bacteria and another single-celled organism known as Archaea. However, evidence of a transition period in which the two organisms mixed were…
Thursday 23 May 2019
Sugar molecule contributes to reconstruction of prehistoric fire
Little is currently known about how early humans first used fire. That will now change thanks to a new proxy, a measurable substance that can be used to demonstrate forest fires in a distant past. The proxy is the organic substance levoglucosan, a…

Linked blogs

Monday 12 March 2018
Fire biomarker in Saharan dust traced across the Atlantic Ocean
In their new paper that was published in Geochimica et Cosmochimica Acta today, Laura Schreuder and colleagues apply a new proxy for burnt vegetation; the anhydrosugar levoglucosan, and demonstrate how this sugar can be found in present-day Saharan…

NIOZ publications

  • 2024
    van Kemenade, Z.R.; Erdem, Z.; Hopmans, E.C.; Sinninghe Damsté, J.S; Rush, D. (2024). Loss of nitrogen via anaerobic ammonium oxidation (anammox) in the California Current system during the late Quaternary. Biogeosciences 21(6): 1517-1532. https://dx.doi.org/10.5194/bg-21-1517-2024
  • 2023
    Mitrovic, D.; Hopmans, E.C.; Bale, N.J.; Richter, N.; Amaral-Zettler, L.; Baxter, A.J.; Peterse, F; Miguel Raposeiro, P.; Gonçalves, V.; Cristina Costa, A.; Schouten, S. (2023). Isoprenoidal GDGTs and GDDs associated with anoxic lacustrine environments. Org. Geochem. 178: 104582. https://dx.doi.org/10.1016/j.orggeochem.2023.104582
    Richter, N.; Hopmans, E.C.; Mitrovic, D.; Miguel Raposeiro, P.; Gonçalves, V.; Costa, A.C.; Amaral-Zettler, L.; Villanueva, L.; Rush, D. (2023). Distributions of bacteriohopanepolyols in lakes and coastal lagoons of the Azores Archipelago. Biogeosciences 20(11): 2065-2098. https://dx.doi.org/10.5194/bg-20-2065-2023
    van Kemenade, Z.R.; Cutmore, A.; Hennekam, R.; Hopmans, E.C.; van der Meer, M.T.J.; Mojtahid, M.; Jorissen, F.; Bale, N.; Reichart, G.-J.; Sinninghe Damsté, J.S; Rush, D. (2023). Marine nitrogen cycling dynamics under altering redox conditions: Insights from deposition of sapropels S1 and the ambiguous S2 in the Eastern Mediterranean Sea. Geochim. Cosmochim. Acta 354: 197-210. https://dx.doi.org/10.1016/j.gca.2023.06.018
  • 2022
    Ding, S.; Henkel, J.V.; Hopmans, E.C.; Bale, N.J.; Koenen, M.; Villanueva, L.; Sinninghe Damsté, J.S. (2022). Changes in the membrane lipid composition of a Sulfurimonas species depend on the electron acceptor used for sulfur oxidation. ISME Commun. 2: 121. https://dx.doi.org/10.1038/s43705-022-00207-3
    Sahonero Canavesi, D.X.; Villanueva, L.; Bale, N.J.; Bosviel, J.; Koenen, M.; Hopmans, E.C.; Sinninghe Damsté, J.S. (2022). Changes in the distribution of membrane lipids during growth of Thermotoga maritima at different temperatures: Indications for the potential mechanism of biosynthesis of ether-bound diabolic acid (membrane-spanning) lipids. Appl. Environ. Microbiol. 88(2). https://dx.doi.org/10.1128/aem.01763-21
    van Kemenade, Z.R.; Villanueva, L.; Hopmans, E.C.; Kraal, P.; Witte, H.J.; Sinninghe Damsté, J.S.; Rush, D. (2022). Bacteriohopanetetrol-x: constraining its application as a lipid biomarker for marine anammox using the water column oxygen gradient of the Benguela upwelling system. Biogeosciences 19(1): 201-221. https://dx.doi.org/10.5194/bg-19-201-2022
    Wegley Kelly, L.; Nelson, C.E.; Petras, D.; Koester, I.; Quinlan, Z.A.; Arts, M.G.I.; Nothias, L.-F.; Comstock, J.; White, B.M.; Hopmans, E.C.; van Duyl, F.C.; Carlson, C.A.; Aluwihare, L.I.; Dorrestein, P.C.; Haas, A.F. (2022). Distinguishing the molecular diversity, nutrient content, and energetic potential of exometabolomes produced by macroalgae and reef-building corals  . Proc. Natl. Acad. Sci. U.S.A. 119(5): e2110283119. https://dx.doi.org/10.1073/pnas.2110283119
  • 2021
    Bale, N.J.; Ding, S.; Hopmans, E.C.; Arts, M.G.I.; Villanueva, L.; Boschman, C.; Haas, A.F.; Schouten, S.; Sinninghe Damsté, J.S (2021). Lipidomics of environmental microbial communities. I: visualization of component distributions using untargeted analysis of high-resolution mass spectrometry data. Front. Microbiol. 12. https://dx.doi.org/10.3389/fmicb.2021.659302
    Ding, S.; Bale, N.J.; Hopmans, E.C.; Villanueva, L.; Arts, M.G.I.; Schouten, S.; Sinninghe Damsté, J.S (2021). Lipidomics of environmental microbial communities. II: characterization using molecular networking and information theory. Front. Microbiol. 12: 659315. https://dx.doi.org/10.3389/fmicb.2021.659315
    Häggi, C.; Hopmans, E.C.; Schefuß, E.; Sawakuchi, A.O.; Schreuder, L.T.; Bertassoli, D.J.; Chiessi, C.M.; Mulitza, S.; Sawakuchi, H.O.; Baker, P.A.; Schouten, S. (2021). Negligible quantities of particulate low‐temperature pyrogenic carbon reach the Atlantic Ocean via the Amazon River. Global Biogeochem. Cycles 35(9): e2021GB006990. https://dx.doi.org/10.1029/2021gb006990
    Hopmans, E.C.; Smit, N.T.; Schwartz-Narbonne, R.; Sinninghe Damsté, J.S.; Rush, D. (2021). Analysis of non-derivatized bacteriohopanepolyols using UHPLC-HRMS reveals great structural diversity in environmental lipid assemblages. Org. Geochem. 160: 104285. https://dx.doi.org/10.1016/j.orggeochem.2021.104285
    Lattaud, J.; Balzano, S.; van der Meer, M.T.J.; Villanueva, L.; Hopmans, E.C.; Sinninghe Damsté, J.S; Schouten, S. (2021). Sources and seasonality of long-chain diols in a temperate lake (Lake Geneva). Org. Geochem. 156: 104223. https://doi.org/10.1016/j.orggeochem.2021.104223
    Spencer-Jones, C.L.; McClymont, E.L.; Bale, N.J.; Hopmans, E.C.; Schouten, S.; Müller, J.; Abrahamsen, E.Povl; Allen, C.; Bickert, T.; Hillenbrand, C.-D.; Mawbey, E.M.; Peck, V.; Svalova, A.; Smith, J.A. (2021). Archaeal intact polar lipids in polar waters: a comparison between the Amundsen and Scotia seas. Biogeosciences 18(11): 3485-3504. https://dx.doi.org/10.5194/bg-18-3485-2021
    Villanueva, L.; von Meijenfeldt, F.A.B.; Westbye, A.B.; Yadav, S.; Hopmans, E.C.; Dutilh, B.E.; Sinninghe Damsté, J.S (2021). Bridging the membrane lipid divide: bacteria of the FCB group superphylum have the potential to synthesize archaeal ether lipids. ISME J. 15: 168-182. https://dx.doi.org/10.1038/s41396-020-00772-2
  • 2020
    Bale, N.J.; Koenen, M.; Yadav, S.; Hopmans, E.C.; Villanueva, L.; Sinninghe Damsté, J.S.; Schouten, S. (2020). Diagnostic amide products of amino lipids detected in the microaerophilic bacteria Lutibacter during routine fatty acid analysis using gas chromatography. Org. Geochem. 144: 104027. https://doi.org/10.1016/j.orggeochem.2020.104027
    Besseling, M.A.; Hopmans, E.C.; Bale, N.J.; Schouten, S.; Sinninghe Damsté, J.S.; Villanueva, L. (2020). The absence of intact polar lipid-derived GDGTs in marine waters dominated by Marine Group II: Implications for lipid biosynthesis in Archaea. NPG Scientific Reports 10(1): 10 pp. https://dx.doi.org/10.1038/s41598-019-57035-0
    Dietze, E.; Mangelsdorf, K.; Andreev, A.; Karger, C.; Schreuder, L.T.; Hopmans, E.C.; Rach, O.; Sachse, D.; Wennrich, V.; Herzschuh, U. (2020). Relationships between low-temperature fires, climate and vegetation during three late glacials and interglacials of the last 430 kyr in northeastern Siberia reconstructed from monosaccharide anhydrides in Lake El'gygytgyn sediments. Clim. Past 16(2): 799-818. https://dx.doi.org/10.5194/cp-16-799-2020
    Ozuolmez, D.; Moore, E.K.; Hopmans, E.C.; Sinninghe Damsté, J.S; Stams, A.J.M.; Plugge, C.M. (2020). Butyrate conversion by sulfate-reducing and methanogenic communities from anoxic sediments of Aarhus Bay, Denmark. Microorganisms 8(4): 606. https://dx.doi.org/10.3390/microorganisms8040606
    Ruan, Y.; Mohtadi, M.; Dupont, L.M.; Hebbeln, D.; Kaars, S.; Hopmans, E.C.; Schouten, S.; Hyer, E.J.; Schefuß, E. (2020). Interaction of fire, vegetation, and climate in tropical ecosystems: A multiproxy study over the past 22,000 years. Global Biogeochem. Cycles 34(11): e2020GB006677. https://doi.org/10.1029/2020gb006677
    Schwartz-Narbonne, R.; Schaeffer, P.; Hopmans, E.C.; Schenesse, M.; Alex Charlton, E.; Martin Jones, D.; Sinninghe Damsté, J.S.; Farhan Ul Haque, M.; Jetten, M.S.M.; Lengger, S.K. (2020). A unique bacteriohopanetetrol stereoisomer of marine anammox. Org. Geochem. 143: 103994. https://doi.org/10.1016/j.orggeochem.2020.103994
    Yadav, S.; Villanueva, L.; Bale, N.; Koenen, M.; Hopmans, E.C.; Sinninghe Damsté, J.S (2020). Physiological, chemotaxonomic and genomic characterization of two novel piezotolerant bacteria of the family Marinifilaceae isolated from sulfidic waters of the Black Sea. Syst. Appl. Microbiol. 43(5): 126122. https://doi.org/10.1016/j.syapm.2020.126122
  • 2019
    Bale, N.J.; Hennekam, R.; Hopmans, E.C.; Dorhout, D.; Reichart, G.-J.; Van der Meer, M.T.J.; Villareal, T.A.; Sinninghe Damsté, J.S; Schouten, S. (2019). Biomarker evidence for nitrogen-fixing cyanobacterial blooms in a brackish surface layer in the Nile River plume during sapropel deposition. Geology (Boulder Colo.) 47(11): 1088-1092. https://dx.doi.org/10.1130/g46682.1
    Bale, N.J.; Sorokin, D.Y.; Hopmans, E.C.; Koenen, M.; Rijpstra, W.I.C.; Villanueva, L.; Wienk, H.; Sinninghe Damsté, J.S. (2019). New insights into the polar lipid composition of extremely halo(alkali)philic euryarchaea from hypersaline lakes. Front. Microbiol. 10: article 377. https://dx.doi.org/10.3389/fmicb.2019.00377
    Baxter, A.J.; Hopmans, E.C.; Russell, J.M.; Sinninghe Damsté, J.S (2019). Bacterial GMGTs in East African lake sediments: Their potential as palaeotemperature indicators. Geochim. Cosmochim. Acta 259: 155-169. https://dx.doi.org/10.1016/j.gca.2019.05.039
    Besseling, M.A.; Hopmans, E.C.; Koenen, M.; van der Meer, M.T.J.; Vreugdenhil, S.; Schouten, S.; Sinninghe Damsté, J.S; Villanueva, L. (2019). Depth-related differences in archaeal populations impact the isoprenoid tetraether lipid composition of the Mediterranean Sea water column. Org. Geochem. 135: 16-31. https://dx.doi.org/10.1016/j.orggeochem.2019.06.008
    de Bar, M.W.; Rampen, S.W.; Hopmans, E.C.; Sinninghe Damsté, J.S.; Schouten, S. (2019). Constraining the applicability of organic paleotemperature proxies for the last 90 Myrs. Org. Geochem. 128: 122-136. https://doi.org/10.1016/j.orggeochem.2018.12.005
    Dietze; Brykala; Schreuder, L.T.; Jazdzewski, K.; Blarquez; Brauer; Dietze; Obremska; Ott; Pienczewska; Schouten, S.; Hopmans, E.C.; Slowinski (2019). Human-induced fire regime shifts during 19th century industrialization: A robust fire regime reconstruction using northern Polish lake sediments. PLoS One 14(9): e0222011. https://dx.doi.org/10.1371/journal.pone.0222011
    Lattaud, J.; Erdem, Z.; Weiss, G.M.; Rush, D.; Balzano, S.; Chivall, D.; van der Meer, M.T.J.; Hopmans, E.C.; Sinninghe Damsté, J.S; Schouten, S. (2019). Hydrogen isotopic ratios of long-chain diols reflect salinity. Org. Geochem. 137: 103904. https://dx.doi.org/10.1016/j.orggeochem.2019.103904
    Meegan Kumar, D.; Woltering, M.; Hopmans, E.C.; Sinninghe Damsté, J.S; Schouten, S.; Werne, J.P. (2019). The vertical distribution of Thaumarchaeota in the water column of Lake Malawi inferred from core and intact polar tetraether lipids. Org. Geochem. 132: 37-49. https://dx.doi.org/10.1016/j.orggeochem.2019.03.004
    Rush, D.; Talbot, H.M.; Van der Meer, M.T.J.; Hopmans, E.C.; Douglas, B.; Sinninghe Damsté, J.S (2019). Biomarker evidence for the occurrence of anaerobic ammonium oxidation in the eastern Mediterranean Sea during Quaternary and Pliocene sapropel formation. Biogeosciences 16(12): 2467-2479. https://dx.doi.org/10.5194/bg-16-2467-2019
    Schreuder, L.T.; Donders, T.H.; Mets, A.; Hopmans, E.C.; Sinninghe Damsté, J.S; Schouten, S. (2019). Comparison of organic and palynological proxies for biomass burning and vegetation in a lacustrine sediment record (Lake Allom, Fraser Island, Australia). Org. Geochem. 133: 10-19. https://dx.doi.org/10.1016/j.orggeochem.2019.03.002
    Schreuder, L.T.; Hopmans, E.C.; Castañeda, I.S.; Schefuß, E.; Mulitza, S.; Sinninghe Damsté, J.S.; Schouten, S. (2019). Late Quaternary biomass burning in Northwest Africa and interactions with climate, vegetation, and humans. Paleoceanography and Paleoclimatology 34(2): 153-163. https://dx.doi.org/10.1029/2018PA003467
    Sollai, M.; Villanueva, L.; Hopmans, E.C.; Keil, R.G.; Sinninghe Damsté, J.S. (2019). Archaeal sources of intact membrane lipid biomarkers in the oxygen deficient zone of the eastern tropical South Pacific. Front. Microbiol. 10: 765. https://dx.doi.org/10.3389/fmicb.2019.00765
    Sollai, M.; Villanueva, L.; Hopmans, E.C.; Reichart, G.-J.; Sinninghe Damsté, J.S. (2019). A combined lipidomic and 16S rRNA gene amplicon sequencing approach reveals archaeal sources of intact polar lipids in the stratified Black Sea water column. Geobiol. 17(1): 91-109. https://doi.org/10.1111/gbi.12316
  • 2018
    Bale, N.J.; Hopmans, E.C.; Dorhout, D.; Stal, L.J.; Grego, M.; van Bleijswijk, J.D.L.; Sinninghe Damsté, J.S.; Schouten, S. (2018). A novel heterocyst glycolipid detected in a pelagic N2 -fixing cyanobacterium of the genus Calothrix. Org. Geochem. 123: 44-47. https://doi.org/10.1016/j.orggeochem.2018.06.009
    Bale, N.J.; Villareal, T.A.; Hopmans, E.C.; Brussaard, C.P.D.; Besseling, M.; Dorhout, D.; Sinninghe Damsté, J.S.; Schouten, S. (2018). C5 glycolipids of heterocystous cyanobacteria track symbiont abundance in the diatom Hemiaulus hauckii across the tropical North Atlantic. Biogeosciences 15(4): 1229-1241. https://dx.doi.org/10.5194/bg-15-1229-2018
    Besseling, M.A.; Hopmans, E.C.; Boschman, R.C.; Sinninghe Damsté, J.S.; Villanueva, L. (2018). Benthic archaea as potential sources of tetraether membrane lipids in sediments across an oxygen minimum zone. Biogeosciences 15: 4047-4064. https://doi.org/10.5194/bg-15-4047-2018
    Lattaud, J.; Kirkels, F.; Peterse, F.; Freymond, C.V.; Eglinton, T.I.; Hefter, J.; Mollenhauer, G.; Balzano, S.; Villanueva, L.; van der Meer, M.T.J.; Hopmans, E.C.; Sinninghe Damsté, J.S.; Schouten, S. (2018). Long-chain diols in rivers: distribution and potential biological sources. Biogeosciences 15(13): 4147-4161. https://doi.org/10.5194/bg-15-4147-2018
    Lipsewers, Y.A.; Hopmans, E.C.; Sinninghe Damsté, J.S.; Villanueva, L. (2018). Potential recycling of thaumarchaeotal lipids by DPANN Archaea in seasonally hypoxic surface marine sediments. Org. Geochem. 119: 101-109. https://dx.doi.org/10.1016/j.orggeochem.2017.12.007
    Russell, J.M.; Hopmans, E.C.; Loomis, S.E.; Liang, J.; Sinninghe Damsté, J.S. (2018). Distributions of 5- and 6-methyl branched glycerol dialkyl glycerol tetraethers (brGDGTs) in East African lake sediment: Effects of temperature, pH, and new lacustrine paleotemperature calibrations. Org. Geochem. 117: 56-69. https://dx.doi.org/10.1016/j.orggeochem.2017.12.003
    Schreuder, L.T.; Hopmans, E.C.; Stuut, J.-B.W.; Sinninghe Damsté, J.S.; Schouten, S. (2018). Transport and deposition of the fire biomarker levoglucosan across the tropical North Atlantic Ocean. Geochim. Cosmochim. Acta 227: 171-185. https://doi.org/10.1016/j.gca.2018.02.020
    Sinninghe Damsté, J.S.; Rijpstra, W.I.C.; Hopmans, E.C.; den Uijl, M.J.; Weijers, J.W.H.; Schouten, S. (2018). The enigmatic structure of the crenarchaeol isomer. Org. Geochem. 124: 22-28. https://dx.doi.org/10.1016/j.orggeochem.2018.06.005
  • 2017
    Bale, N.; de Vries, S.; Hopmans, E.C.; Sinninghe Damsté, J.S.; Schouten, S. (2017). A method for quantifying heterocyst glycolipids in biomass and sediments. Org. Geochem. 110: 33-35. https://dx.doi.org/10.1016/j.orggeochem.2017.04.010
    de Bar, M.W.; Hopmans, E.C.; Verweij, M.; Dorhout, D.J.C.; Sinninghe Damsté, J.S.; Schouten, S. (2017). Development and comparison of chromatographic methods for the analysis of long chain diols and alkenones in biological materials and sediment. J. Chromatogr. 1521: 150-160. https://dx.doi.org/10.1016/j.chroma.2017.09.037
    Sollai, M.; Hopmans, E.C.; Bale, N.J.; Mets, A.; Warden, L.; Moros, M.; Sinninghe Damsté, J.S. (2017). The Holocene sedimentary record of cyanobacterial glycolipids in the Baltic Sea: an evaluation of their application as tracers of past nitrogen fixation. Biogeosciences 14(24): 5789-5804. https://doi.org/10.5194/bg-14-5789-2017
    Weber, Y.; Sinninghe Damsté, J.S.; Hopmans, E.C.; Lehmann, M.F.; Niemann, H. (2017). Incomplete recovery of intact polar glycerol dialkyl glycerol tetraethers from lacustrine suspended biomass. Limnol. Oceanogr., Methods 15(9): 782–793. https://dx.doi.org/10.1002/lom3.10198
  • 2016
    Bale, N.J.; Hopmans, E.C.; Schoon, P.; de Kluijver, A.; Downing, J.A.; Middelburg, J.J.; Sinninghe Damsté, J.S.; Schouten, S. (2016). Impact of trophic state on the distribution of intact polar lipids in surface waters of lakes. Limnol. Oceanogr. 61(3): 1065–1077. dx.doi.org/10.1002/lno.10274
    de Bar, M.W.; Dorhout, D.J.C.; Hopmans, E.C.; Rampen, S.W.; Sinninghe Damste, J.S.; Schouten, S. (2016). Constraints on the application of long chain diol proxies in the Iberian Atlantic margin. Org. Geochem. 10: 184–195. dx.doi.org/10.1016/j.orggeochem.2016.09.005
    Hopmans, E.C.; Schouten, S.; Sinninghe Damsté, J.S. (2016). The effect of improved chromatography on GDGT-based palaeoproxies. Org. Geochem. 93: 1-6. dx.doi.org/10.1016/j.orggeochem.2015.12.006
    Kusch, S.; Rethemeyer, J.; Hopmans, E.C.; Wacker, L.; Mollenhauer, G. (2016). Factors influencing 14C concentrations of algal and archaeal lipids and their associated sea surface temperature proxies in the Black Sea. Geochim. Cosmochim. Acta 188: 35–57. dx.doi.org/10.1016/j.gca.2016.05.025
    Lipsewers, Y.A.; Hopmans, E.C.; Meysman, F.J.R.; Sinninghe Damsté, J.S.; Villanueva, L. (2016). Abundance and diversity of denitrifying and anammox bacteria in seasonally hypoxic and sulfidic sediments of the saline Lake Grevelingen. Front. Microbiol. 7: 1661. https://dx.doi.org/10.3389/fmicb.2016.01661
    Maat, D.; Bale, N.J.; Hopmans, E.C.; Sinninghe Damsté, J.S.; Schouten, S.; Brussaard, C.P.D. (2016). Increasing P limitation and viral infection impact lipid remodeling of the picophytoplankter Micromonas pusilla. Biogeosciences 13(5): 1667-1676. http://dx.doi.org/10.5194/bg-13-1667-2016
    Moore, E.K.; Hopmans, E.C.; Rijpstra, W.I.C.; Villanueva, L.; Sinninghe Damsté, J.S. (2016). Elucidation and identification of amino acid containing membrane lipids using liquid chromatography/high-resolution mass spectrometry. Rapid Comm. Mass Spectrom. 30(6): 739–750. dx.doi.org/10.1002/rcm.7503
    Svensson, E.; Schouten, S.; Hopmans, E.C.; Middelburg, J.J.; Sinninghe Damsté, J.S. (2016). Factors Controlling the Stable Nitrogen Isotopic Composition (δ15N) of Lipids in Marine Animals. PLoS One 11(1): e0146321. https://dx.doi.org/10.1371/journal.pone.0146321
  • 2015
    Bale, N.; Hopmans, E.C.; Zell, C.; Sobrinho, R.; Kim, J.H.; Sinninghe Damsté, J.S.; Villareal, T.A.; Schouten, S. (2015). Long chain glycolipids with pentose head groups as biomarkers for marine endosymbiotic heterocystous cyanobacteria. Org. Geochem. 81: 1-7. https://dx.doi.org/10.1016/j.orggeochem.2015.01.004
    Bale, N.J.; Maat, D.S.; Hopmans, E.C.; Mets, A.; Sinninghe Damsté, J.S.; Brussaard, C.P.D.; Schouten, S. (2015). Fatty acid dynamics during viral infection of Phaeocystis globosa. Aquat. Microb. Ecol. 74: 85–94. dx.doi.org/10.3354/ame01730
    De Jonge, C.; Stadnitskaia, A.; Hopmans, E.C.; Cherkashov, G.; Fedotov, A.; Streletskaya, I.D.; Vasiliev, A.A.; Sinninghe Damsté, J.S. (2015). Drastic changes in the distribution of branched tetraether lipids in suspended matter and sediments from the Yenisei River and Kara Sea (Siberia): Implications for the use of brGDGT-based proxies in coastal marine sediment. Geochim. Cosmochim. Acta 165: 200-225. dx.doi.org/10.1016/j.gca.2015.05.044
    Kaur, G.; Mountain, B.W.; Stott, M.; Hopmans, E.C.; Pancrost, R.J. (2015). Temperature and pH control on lipid composition of silica sinters from diverse hot springs in the Taupo Volcanic Zone, New Zealand. Extremophiles 19: 327-344. dx.doi.org/10.1007/s00792-014-0719-9
    Kim, J.H.; Schouten, S.; Rodrigo-Gámiz, M.; Rampen, S.W.; Marino, G.; Huguet, C.; Helmke, P.; Buscail, R.; Hopmans, E.C.; Pross, J.; Sangiorgi, F.; Middelburg, J.; Sinninghe Damsté, J.S. (2015). Influence of deep-water derived isoprenoid tetraether lipids on the TEX h 86 paleothermometer in the Mediterranean Sea. Geochim. Cosmochim. Acta 150: 125–141. dx.doi.org/10.1016/j.gca.2014.11.017
    Moore, E.K.; Hopmans, E.C.; Rijpstra, W.I.C.; Sánchez-Andrea, I.; Villanueva, L.; Wienk, H.; Schoutsen, F; Stams, A.J.M.; Sinninghe Damsté, J.S. (2015). Lysine and novel hydroxylysine lipids in soil bacteria: amino acid membrane lipid response to temperature and pH in Pseudopedobacter saltans. Front. Microbiol. 6: 637. dx.doi.org/10.3389/fmicb.2015.00637
    Moore, E.K.; Villanueva, L.; Hopmans, E.C.; Rijpstra, W.I.C.; Mets, A.; Dedysh, S.N.; Sinninghe Damsté, J.S. (2015). Abundant Trimethylornithine Lipids and Specific Gene Sequences Are Indicative of Planctomycete Importance at the Oxic/Anoxic Interface in Sphagnum-Dominated Northern Wetlands. Appl. Environ. Microbiol. 81(18): 6333-6344. dx.doi.org/10.1128/AEM.00324-15
    Sollai, M.; Hopmans, E.C.; Schouten, S.; Keil, R.G.; Sinninghe Damsté, J.S. (2015). Intact polar lipids of Thaumarchaeota and anammox bacteria as indicators of N cycling in the eastern tropical North Pacific oxygen-deficient zone. Biogeosciences 12: 4725-4737. dx.doi.org/10.5194/bg-12-4725-2015
    Weber, Y.; De Jonge, C.; Rijpstra, W.I.C.; Hopmans, E.C.; Stadnitskaia, A.; Schubert, C.J.; Lehmann, M.F.; Sinninghe Damsté, J.S.; Niemann, H. (2015). Identification and carbon isotope composition of a novel branched GDGT isomer in lake sediments: Evidence for lacustrine branched GDGT production. Geochim. Cosmochim. Acta 154: 118-129. dx.doi.org/10.1016/j.gca.2015.01.032
  • 2014
    Bale, N.; Villanueva, L.; Fan, H.; Hopmans, E.C.; Schouten, S.; Sinninghe Damsté, J.S.; Stal, L.J. (2014). Occurrence and activity of anammox bacteria in surface sediments of the southern North Sea. FEMS Microbiol. Ecol. 89(1): 99–110. hdl.handle.net/10.1111/1574-6941.12338
    De Jonge, C.; Hopmans, E.C.; Zell, C.; Kim, J.H.; Schouten, S.; Sinninghe Damsté, J.S. (2014). Occurrence and abundance of 6-methyl branched glycerol dialkyl glycerol tetraethers in soils: Implications for palaeoclimate reconstruction. Geochim. Cosmochim. Acta 141: 97–112. dx.doi.org/10.1016/j.gca.2014.06.013
    De Jonge, C.; Stadnitskaia, A.; Hopmans, E.C.; Cherkashov, G.; Fedotov, A.; Sinninghe Damsté, J. (2014). In situ produced branched glycerol dialkyl glycerol tetraethers in suspended particulate matter from the Yenisei River, Eastern Siberia. Geochim. Cosmochim. Acta 125: 476-491. dx.doi.org/10.1016/j.gca.2013.10.031
    Heinzelmann, S.M.; Bale, N.J.; Hopmans, E.C.; Sinninghe Damsté, J.S.; Schouten, S.; van der Meer, M.T.J. (2014). Critical Assessment of Glyco- and Phospholipid Separation by Using Silica Chromatography. Appl. Environ. Microbiol. 80(1): 360-365. dx.doi.org/10.1128/AEM.02817-13
    Lengger, S.K.; Hopmans, E.C.; Sinninghe Damsté, J.S.; Schouten, S. (2014). Impact of sedimentary degradation and deep water column production on GDGT abundance and distribution in surface sediments in the Arabian Sea: Implicationsfor the TEX86 paleothermometer. Geochim. Cosmochim. Acta 142: 386-399. hdl.handle.net/10.1016/j.gca.2014.07.013
    Lengger, S.K.; Hopmans, E.C.; Sinninghe Damsté, J.S.; Schouten, S. (2014). Fossilization and degradation of archaeal intact polar tetraether lipids in deeply buried marine sediments (Peru Margin). Geobiol. 12(3): 212-220. dx.doi.org/10.1111/gbi.12081
    Lipsewers, Y.A.; Bale, N.J.; Hopmans, E.C.; Schouten, S.; Sinninghe Damsté, J.S.; Villanueva, L. (2014). Seasonality and depth distribution of the abundance and activity of ammonia oxidizing microorganisms in marine coastal sediments (North Sea). Front. Microbiol. 5: 471 1-12. dx.doi.org/10.3389/fmicb.2014.00472
    Maat, D.S.; Bale, N.J.; Hopmans, E.C.; Baudoux, A.C.; Sinninghe Damsté, J.S.; Schouten, S.; Brussaard, C.P.D. (2014). Acquisition of intact polar lipids from the prymnesiophyte Phaeocystis globosa by its lytic virus PgV-07T. Biogeosciences 11(1): 185-194. dx.doi.org/10.5194/bg-11-185-2014
    Schouten, S.; Villanueva, L.; Hopmans, E.C.; van der Meer, M.T.J.; Sinninghe Damsté, J.S. (2014). Are Marine Group II Euryarchaeota significant contributors to tetraether lipids in the ocean? Proc. Natl. Acad. Sci. U.S.A. 111(41): e4285. dx.doi.org/10.1073/pnas.1416176111
    Sinninghe Damsté, J.S.; Rijpstra, W.I.C.; Hopmans, E.C.; Foesel, B.U.; Wüst, P.K.; Overmann, J.; Tank, M.; Bryant, D.A.; Dunfield, P.F.; Houghton, K.; Stott, M. (2014). Ether- and Ester-Bound iso-Diabolic Acid and Other Lipids in Members of Acidobacteria Subdivision 4. Appl. Environ. Microbiol. 80(17): 5207-5218. hdl.handle.net/10.1128/AEM.01066-14
    Villanueva, L.; Hopmans, E.C.; Bale, N.; Schouten, S.; Sinninghe Damsté, J.S. (2014). Diversity and distribution of a key sulpholipid biosynthetic gene in marine microbial assemblages. Environ. Microbiol. 16(3): 774-787. dx.doi.org/10.1111/1462-2920.12202
  • 2013
    Bale, N.J.; Hopmans, E.C.; Schouten, S.; Sinninghe Damsté, J.S. (2013). Different seasonality of pelagic and benthic Thaumarchaeota in the North Sea. Biogeosciences 10: 7195–7206. hdl.handle.net/10.5194/bg-10-7195-2013
    Bauersachs, T.; Miller, S.R.; van der Meer, M.T.J.; Hopmans, E.C.; Schouten, S.; Sinninghe Damsté, J.S. (2013). Distribution of long chain heterocyst glycolipids in cultures of the thermophilic cyanobacterium Mastigocladus laminosus and a hot spring microbial mat. Org. Geochem. 56: 19-24. dx.doi.org/10.1016/j.orggeochem.2012.11.013
    De Jonge, C.; Hopmans, E.C.; Stadnitskaia, A.; Rijpstra, W.I.C.; Hofland, R.; Tegelaar, E.; Sinninghe Damsté, J.S. (2013). Identification of novel penta- and hexamethylated branched glycerol dialkyl glycerol tetraethers in peat using HPLC-MS2, GC-MS and GC-SMB-MS. Org. Geochem. 54: 78-82. dx.doi.org/10.1016/j.orggeochem.2012.10.004
    Ferrer, C.; Fodran, P.; Barroso, S.; Gibson, R.; Hopmans, E.C.; Sinninghe Damsté, J.S.; Schouten, S.; Minnaard, A.J. (2013). Asymmetric synthesis of cyclo-archaeol and ß-glucosyl cyclo-archaeol. Org. Biomol. Chem. 11(15): 2482-2492. dx.doi.org/10.1039/c3ob27277j
    Gibson, R.A.; van der Meer, M.T.J.; Hopmans, E.C.; Reysenbach, A.-L.; Schouten, S.; Sinninghe Damsté, J.S. (2013). Comparison of intact polar lipid with microbial community composition of vent deposits of the Rainbow and Lucky Strike hydrothermal fields. Geobiol. 11(1): 72-85. dx.doi.org/10.1111/gbi.12017
    Hamilton-Brehm, S.D.; Gibson, R.A.; Green, S.J.; Hopmans, E.C.; Schouten, S.; van der Meer, M.T.J.; Shields, J.P.; Sinninghe Damsté, J.S.; Elkins, J.G. (2013). Thermodesulfobacterium geofontis sp nov., a hyperthermophilic, sulfate-reducing bacterium isolated from Obsidian Pool, Yellowstone National Park. Extremophiles 17(2): 251-263. dx.doi.org/10.1007/s00792-013-0512-1
    Hopmans, E.C.; dos Santos, R.A.L.; Mets, A.; Sinninghe Damsté, J.S.; Schouten, S. (2013). A novel method for the rapid analysis of levoglucosan in soils and sediments. Org. Geochem. 58: 86-88. dx.doi.org/10.1016/j.orggeochem.2013.02.003
    Lengger, S.K.; Kraaij, M.; Tjallingii, R.; Baas, M.; Stuut, J.-B.; Hopmans, E.C.; Sinninghe Damsté, J.S.; Schouten, S. (2013). Differential degradation of intact polar and core glycerol dialkyl glycerol tetraether lipids upon post-depositional oxidation. Org. Geochem. 65: 83-93. dx.doi.org/10.1016/j.orggeochem.2013.10.004
    Lopes dos Santos, R.A.; De Deckker, P.; Hopmans, E.C.; Magee, J.W.; Mets, A.; Sinninghe Damsté, J.S.; Schouten, S. (2013). Abrupt vegetation change after the Late Quaternary megafaunal extinction in southeastern Australia. Nature Geoscience 6(8): 627-631. dx.doi.org/10.1038/NGEO1856
    Moore, E.K.; Hopmans, E.C.; Rijpstra, W.I.C.; Villanueva, L.; Dedysh, S.N.; Wienk, H.; Schoutsen, F; Sinninghe Damsté, J.S. (2013). Novel Mono-, Di-, and Trimethylornithine Membrane Lipids in Northern Wetland Planctomycetes. Appl. Environ. Microbiol. 79(22): 6874-6884. hdl.handle.net/10.1128/AEM.02169-13
    Schouten, S.; Hopmans, E.C.; Rosell-Melé, A.; Pearson, A.; Adam, P.; Bauersachs, T.; Bard, E.; Bernasconi, S.M.; Bianchi, T.S.; Brocks, J.J.; Carlson, L.T.; Castañeda, I.S.; Derenne, S.; Dogrul Selver, A.; Dutta, K.; Eglinton, T.I.; Fosse, C.; Galy, V.; Grice, K.; Hinrichs, K.U.; Huang, Y.S.; Huguet, A.; Huguet, C.; Hurley, S.; Ingalls, A.; Jia, G.; Keely, B.J.; Knappy, C.; Kondo, M.; Krishnan, S.; Lincoln, S.; Lipp, J.S.; Mangelsdorf, K.; Martínez-Garcia, A.; Ménot, G.; Mets, A.; Mollenhauer, G.; Ohkouchi, N.; Ossebaar, J.; Pagani, M.; Pancost, R.D.; Pearson, E.J.; Peterse, F.; Reichart, G.J.; Schaeffer, P.; Schmitt, G.; Schwark, L.; Shah, S.R.; Smith, R.W.; Smittenberg, R.H.; Summons, R.E.; Takano, Y.; Talbot, H.M.; Taylor, K.W.R.; Tarozo, R.; Uchida, M.; van Dongen, B.E.; Van Mooy, B.A.S.; Wang, J.; Warren, C.; Weijers, J.W.H.; Werne, J.P.; Woltering, M.; Xie, S.; Yamamoto, M.; Jang, H.; Zhang, C.L.; Zhang, Y.; Zhang, M.; Sinninghe Damsté, J.S. (2013). An interlaboratory study of TEX86 and BIT analysis of sediments, extracts, and standard mixtures. Geochem. Geophys. Geosyst. 14(12): 5263–5285. dx.doi.org/10.1002/2013GC004904
    Schouten, S.; Hopmans, E.C.; Sinninghe Damsté, J.S. (2013). The organic geochemistry of glycerol dialkyl glycerol tetraether lipids: A review. Org. Geochem. 54: 19-61. dx.doi.org/10.1016/j.orggeochem.2012.09.006
    Schouten, S.; Villareal, T.A.; Hopmans, E.C.; Mets, A.; Swanson, K.M.; Sinninghe Damsté, J.S. (2013). Endosymbiotic heterocystous cyanobacteria synthesize different heterocyst glycolipids than free-living heterocystous cyanobacteria. Phytochemistry 85: 115-121. dx.doi.org/10.1016/j.phytochem.2012.09.002
    Zell, C.; Kim, J.H.; Moreira-Turcq, P.; Abril, G.; Hopmans, E.C.; Bonnet, M.-P.; Lima Sobrinho, R.; Sinninghe Damsté, J.S. (2013). Disentangling the origins of branched tetraether lipids and crenarchaeol in the lower Amazon River: Implications for GDGT-based proxies. Limnol. Oceanogr. 58(1): 343-353. dx.doi.org/10.4319/lo.2013.58.1.0343
  • 2012
    Brandsma, J.; Hopmans, E.C.; Brussaard, C.P.D.; Witte, H.J.; Schouten, S.; Sinninghe Damsté, J.S. (2012). Spatial distribution of intact polar lipids in North Sea surface waters: Relationship with environmental conditions and microbial community composition. Limnol. Oceanogr. 57(4): 959-973. dx.doi.org/10.4319/lo.2012.57.4.0959
    Brandsma, J.; Hopmans, E.C.; Philippart, C.J.M.; Veldhuis, M.J.W.; Schouten, S.; Sinninghe Damsté, J.S.S. (2012). Low temporal variation in the intact polar lipid composition of North Sea coastal marine water reveals limited chemotaxonomic value. Biogeosciences 9(3): 1073-1084. dx.doi.org/10.5194/bg-9-1073-2012
    Lengger, S.K.; Hopmans, E.C.; Reichart, G.J.; Nierop, K.G.J.; Sinninghe Damsté, J.S.; Schouten, S. (2012). Intact polar and core glycerol dibiphytanyl glycerol tetraether lipids in the Arabian Sea oxygen minimum zone. Part II: Selective preservation and degradation in sediments and consequences for the TEX86. Geochim. Cosmochim. Acta 98: 244-258. dx.doi.org/10.1016/j.gca.2012.05.003
    Lengger, S.K.; Hopmans, E.C.; Sinninghe Damsté, J.S.; Schouten, S. (2012). Comparison of extraction and work up techniques for analysis of core and intact polar tetraether lipids from sedimentary environments. Org. Geochem. 47: 34-40. dx.doi.org/10.1016/j.orggeochem.2012.02.009
    Niemann, H.; Stadnitskaia, A.; Wirth, S.B.; Gilli, A.; Anselmetti, F.S.; Sinninghe Damsté, J.S.S.; Schouten, S.; Hopmans, E.C.; Lehmann, M.F. (2012). Bacterial GDGTs in Holocene sediments and catchment soils of a high Alpine lake: application of the MBT/CBT-paleothermometer. Clim. Past 8(3): 889-906. dx.doi.org/10.5194/cp-8-889-2012
    Rush, D.; Hopmans, E.C.; Wakeham, S.G.; Schouten, S.; Sinninghe Damsté, J.S. (2012). Occurrence and distribution of ladderane oxidation products in different oceanic regimes. Biogeosciences 9(7): 2407-2418. dx.doi.org/10.5194/bg-9-2407-2012
    Rush, D.; Wakeham, S.G.; Hopmans, E.C.; Schouten, S.; Sinninghe Damsté, J.S. (2012). Biomarker evidence for anammox in the oxygen minimum zone of the Eastern Tropical North Pacific. Org. Geochem. 53: 80-87. dx.doi.org/10.1016/j.orggeochem.2012.02.005
    Sáenz, J.P.; Hopmans, E.C.; Rogers, D.; Henderson, P.B.; Charette, M.A.; Schouten, S.; Casciotti, K.L.; Sinninghe Damsté, J.S.; Eglinton, T.I. (2012). Distribution of anaerobic ammonia-oxidizing bacteria in a subterranean estuary. Mar. Chem. 136: 7-13. dx.doi.org/10.1016/j.marchem.2012.04.004
    Schouten, S.; Pitcher, A.; Hopmans, E.C.; Villanueva, L.; van Bleijswijk, J.; Sinninghe Damsté, J.S. (2012). Intact polar and core glycerol dibiphytanyl glycerol tetraether lipids in the Arabian Sea oxygen minimum zone: I. Selective preservation and degradation in the water column and consequences for the TEX86. Geochim. Cosmochim. Acta 98: 228-243. https://dx.doi.org/10.1016/j.gca.2012.05.002
    Seki, O.; Schmidt, D.N.; Schouten, S.; Hopmans, E.C.; Sinninghe Damsté, J.S.; Pancost, R.D. (2012). Paleoceanographic changes in the Eastern Equatorial Pacific over the last 10 Myr. Paleoceanography 27. dx.doi.org/10.1029/2011PA002158
    Sinninghe Damsté, J.S.; Rijpstra, W.I.C.; Hopmans, E.C.; Jung, M.Y.; Kim, J.G.; Rhee, S.K.; Stieglmeier, M.; Schleper, C. (2012). Intact Polar and Core Glycerol Dibiphytanyl Glycerol Tetraether Lipids of Group I.1a and I.1b Thaumarchaeota in Soil. Appl. Environ. Microbiol. 78(19): 6866-6874. dx.doi.org/10.1128/AEM.01681-12
    Tierney, J.E.; Schouten, S.; Pitcher, A.; Hopmans, E.C.; Sinninghe Damsté, J.S. (2012). Core and intact polar glycerol dialkyl glycerol tetraethers (GDGTs) in Sand Pond, Warwick, Rhode Island (USA): Insights into the origin of lacustrine GDGTs. Geochim. Cosmochim. Acta 77: 561-581. dx.doi.org/10.1016/j.gca.2011.10.018
  • 2011
    Bauersachs, T.; Compaoré, J.; Severin, I.; Hopmans, E.C.; Schouten, S.; Stal, L.J.; Sinninghe Damsté, J.S. (2011). Diazotrophic microbial community of coastal microbial mats of the southern North Sea. Geobiol. 9(4): 349-359. dx.doi.org/10.1111/j.1472-4669.2011.00280.x
    Brandsma, J.; van de Vossenberg, J.; Risgaard-Petersen, N.; Schmid, M.C.; Engstrom, P.; Eurenius, K.; Hulth, S.; Jaeschke, A.; Abbas, B.; Hopmans, E.C.; Strous, M.; Schouten, S.; Jetten, M.S.M.; Sinninghe Damsté, J.S. (2011). A multi-proxy study of anaerobic ammonium oxidation in marine sediments of the Gullmar Fjord, Sweden. Environmental Microbiology Reports 3(3): 360-366. dx.doi.org/10.1111/j.1758-2229.2010.00233.x
    Kaur, G.; Mountain, B.W.; Hopmans, E.C.; Pancost, R.D. (2011). Preservation of Microbial Lipids in Geothermal Sinters. Astrobiol. 11(3): 259-274. dx.doi.org/10.1089/ast.2010.0540
    Kaur, G.; Mountain, B.W.; Hopmans, E.C.; Pancost, R.D. (2011). Relationship between lipid distribution and geochemical environment within Champagne Pool, Waiotapu, New Zealand. Org. Geochem. 42(10): 1203-1215. dx.doi.org/10.1016/j.orggeochem.2011.08.006
    Peterse, F.; Hopmans, E.C.; Schouten, S.; Rijpstra, W.I.C.; Sinninghe Damsté, J.S. (2011). Identification and distribution of intact polar branched tetraether lipids in peat and soil. Org. Geochem. 42(9): 1007-1015. dx.doi.org/10.1016/j.orggeochem.2011.07.006
    Pitcher, A.; Hopmans, E.C.; Mosier, A.C.; Park, S.J.; Rhee, S.K.; Francis, C.A.; Schouten, S. (2011). Core and Intact Polar Glycerol Dibiphytanyl Glycerol Tetraether Lipids of Ammonia-Oxidizing Archaea Enriched from Marine and Estuarine Sediments. Appl. Environ. Microbiol. 77(10): 3468-3477. dx.doi.org/10.1128/AEM.02758-10
    Pitcher, A.; Villanueva, L.; Hopmans, E.C.; Schouten, S.; Reichart, G.J.; Sinninghe Damsté, J.S. (2011). Niche segregation of ammonia-oxidizing archaea and anammox bacteria in the Arabian Sea oxygen minimum zone. ISME J. 5(12): 1896-1904. dx.doi.org/10.1038/ismej.2011.60
    Powers, L.A.; Johnson, T.C.; Werne, J.P.; Castañeda, I.S.; Hopmans, E.C.; Sinninghe Damsté, J.S.; Schouten, S. (2011). Organic geochemical records of environmental variability in Lake Malawi during the last 700 years, Part I: The TEX86 temperature record. Palaeogeogr. Palaeoclimatol. Palaeoecol. 303(1-4): 133-139. dx.doi.org/10.1016/j.palaeo.2010.09.006
    Rush, D.; Jaeschke, A.; Hopmans, E.C.; Geenevasen, J.A.J.; Schouten, S.; Sinninghe Damsté, J.S. (2011). Short chain ladderanes: Oxic biodegradation products of anammox lipids. Geochim. Cosmochim. Acta 75(6): 1662-1671. dx.doi.org/10.1016/j.gca.2011.01.013
    Sinninghe Damsté, J.S.; Rijpstra, W.I.C.; Hopmans, E.C.; Weijers, J.W.; Foesel, B.U.; Overmann, J.; Dedysh, S.N. (2011). 13,16-Dimethyl Octacosanedioic Acid (iso-Diabolic Acid), a Common Membrane-Spanning Lipid of Acidobacteria Subdivisions 1 and 3. Appl. Environ. Microbiol. 77(12): 4147-4154. dx.doi.org/10.1128/AEM.00466-11
    Weijers, J.W.H.; Steinmann, P.; Hopmans, E.C.; Schouten, S.; Sinninghe Damsté, J.S. (2011). Bacterial tetraether membrane lipids in peat and coal: Testing the MBT-CBT temperature proxy for climate reconstruction. Org. Geochem. 42(5): 477-486. dx.doi.org/10.1016/j.orggeochem.2011.03.013