Dr. Ellen C. Hopmans         E-mail: hopmans@nioz.nl   Direct Phone: (+31) (0)222-369432

ROYAL NETHERLANDS INSTITUTE FOR SEA RESEARCH (NIOZ)   Postal address: P.O. Box 59, NL-1790 AB Den Burg (Texel) The Netherlands   Visiting address: Landsdiep 4 NL-1797 SZ ’t Horntje (Texel) The Netherlands Room: C10-04   Phone (reception): (+31) (0)222-369300 Fax: (+31) (0)222-319674

 

 

General

2001-           Research Scientist, NIOZ

1999-2001    Postdoctoral researcher, NIOZ

Assistant professor food analysis and toxicology, Department of Food                    Science and Technology, University of California, Davis, USA

1995-1997    University of California President's Postdoctoral Fellow Biology and Biotechnology Research Program,                    Lawrence Livermore National Laboratory, Livermore, California, USA

1990-1995    PhD-student, Toxicology, Iowa State University, Ames, Iowa, USA

Research Interests

Development and application of HPLC/MS methods for marine biogeochemistry and toxicology.  Study of both intact and core membrane lipids of archaea and bacteria.  Development of proxies based on organic compounds for paleoclimate studies.

Current  Projects

Ecology and lipid chemistry of marine Crenarchaeota in present and past marine environments (2006-2009) People involved. A. Pitcher (Ph.D student), Prof. Dr. G. Herndl (BIO), Prof. Dr. J.S. Sinninghe Damsté (promotor), Dr. S. Schouten, Dr. E.C. Hopmans, Prof. Dr. J.J. Middelburg (NIOO), Dr. Ir. H.T.S. Boschker NIOO), Prof. Dr. M. Jetten (KUN), Dr. M. Strous (KUN) Funding. DARWIN

Recent Publications (2008 - 2004)

2008

Jaeschke A., Ziegler M., Reichart G.J., Hopmans E.C., Schouten S., and Sinninghe Damsté J.S. Application of ladderane lipids as a proxy for past anammox activity. Geochim. Cosmochim. Acta 72, A420. Kim J.-H., Schouten S., Hopmans E.C., Donner B. and Sinninghe Damsté J.S.  Global sediment core-top calibration of the TEX86 paleothermometer in the ocean. Geochim. Cosmochim. Acta 72, 1154-1173. Mollenhauer G., Eglinton T.I., Hopmans E.C., and Sinninghe Damsté J.S. A radiocarbon-based assessment of the preservation characteristics of crenarchaeol and alkenones from continental margin sediments. Org. Geochem. 39, 1039-1045. Rattray J. E., van de Vossenberg J., Hopmans E.C., Kartal B., van Niftrik L., Rijpstra W.I.C., Strous M., Jetten M.S.M., Schouten S., and Sinninghe Damsté J.S. Ladderane lipid distribution in four genera of anammox bacteria. Arch. Microbiol. 190, 51-66. Schouten S., Baas M., Hopmans E.C., and Sinninghe Damsté J.S. An unusual isoprenoid tetraether lipid in marine and lacustrine sediments. Org. Geochem. 39, 1033-1038. Schouten S., Baas M., Hopmans E.C., Reysenbach A-L and Sinninghe Damsté J.S. Tetraether membrane lipids of Candidatus “‘Aciduliprofundum boonei”, a cultivated obligate thermoacidophilic euryarchaeote from deep-sea hydrothermal vents. Extremophiles 12, 119-124.   Schouten S., Hopmans E.C., Baas M., Boumann H., Standfest S., Könneke M., Stahl D.A. and Sinninghe Damsté J.S. Intact membrane lipids of Candidatus “Nitrosopumilus maritimus”, a cultivated representative of the cosmopolitan mesophilic Group I Crenarchaeota. Appl. Env. Microbiol. 74, 2433-2440.   Werne J. P., Lyons T.W., Hollander D.J., Schouten S., Hopmans E.C., and Sinninghe Damsté J.S. Investigating pathways of diagenetic organic matter sulfurization using compound-specific sulfur isotope analysis. Geochim. Cosmochim. Acta 72, 3489-3502.

2007

Hamersley M.R., Lavik G., Woebken D., Rattray J.E., Lam P., Hopmans E.C., Sinninghe Damsté J.S., Krüger S., Graco M., Gutiérrez D. and Kuypers M.M.M. Anaerobic ammonium oxidation contributes significantly to nitrogen loss from the Peruvian oxygen minimum zone. Limnol. Oceanogr. 52, 923-933.   Jaeschke A., Hopmans E.C., Wakeham S.G., Schouten S. and Sinninghe Damsté J.S. The presence of ladderane lipids in the oxygen minimum zone of the Arabian Sea indicates nitrogen loss through anammox. Limnol. Oceanogr. 82, 780-786.   Schouten S, Huguet C., Hopmans E.C. and Sinninghe Damsté J.S. Improved analytical methodology of the TEX86 paleothermometry by high performance liquid  chromatography /atmospheric pressure chemical ionization-mass spectrometry. Anal. Chem. 79, 2940-2944.   Schouten, S., van der Meer M.T.J., Hopmans E.C., Rijpstra W.I.C., Reysenbach A-L., Ward D.M. and Sinninghe Damsté J.S. Archaeal and bacterial glycerol dialkyl glycerol tetraether lipids in hot springs of Yellowstone National Park (USA). Appl. Env. Microbiol. 73, 6181-6191.   Sinninghe Damsté J.S., Rijpstra W.I.C., Hopmans E.C., Balk M. and Stams A.J. Structural characterization of mixed ether/ester, membrane-spanning lipids of bacteria from the order Thermotogales. Arch. Microbiol. 188, 629–641.   Stadnitskaia, A., Blinova V., Baas M., Hopmans E.C., Ivanov M.K. and Sinninghe Damsté J.S. Lipid biomarkers in sediments of mud volcanoes from the Sorokin Trough, NE Black Sea: Probable source strata for the erupted material. Org. Geochem. 38, 67-83.   Weijers J.W.H., Schouten S., van den Donker J.C., Hopmans E.C. and Sinninghe Damsté J.S. Environmental controls on bacterial tetraether membrane lipid distribution in soils. Geochim. Cosmochim. Acta 71, 703-713.

2006

Bouillabasee, I., Aloisi, G., Pancost, R.D., Hopmans, E.C., Pierre, C., Sinninghe Damsté, J.S. Archaeal and bacterial lipids in authigenic carbonate crusts from eastern Mediterranean mud volcanoes. Org. Geochem. 37, 484-500.   Boumann, H.A., Hopmans, E.C., van de Leemput, I., Op den Camp, H.J.M., van de Vossenberg, J., Strous, M., Jetten, M.S.M., Damste, J.S.S., Schouten, S. Ladderane phospholipids in anammox bacteria comprise phosphocholine and phosphor-ethanolamine headgroups. Fems Microbiology Letters 258, 297-304. Dumitrescu M., Brassell S.C., Schouten S., Hopmans E.C. and Sinninghe Damsté J.S. Instability in tropical Pacific sea surface temperatures during the Early Aptian. Geology 34, 833-836.   Hopmans E.C., Kienhuis M.V.M., Rattray J.E., Jaeschke A., Schouten S., Sinninghe Damsté J.S. Improved analysis of ladderane lipids in biomass and sediments using high performance liquid chromatography/atmospheric pressure chemical ionization tandem mass spectrometry. Rap. Comm. Mass. Spectr. 20, 2099-2103.   Huguet C., Hopmans E.C., Febo-Ayala W., Thompson D.H., Sinninghe Damsté J.S. and Schouten S. An improved method to determine the absolute abundance of glycerol dibiphytanyl glycerol tetraether lipids. Org. Geochem. 37, 1036-1041.   Ménot G., Bard E., Rostek F., Weijers J.W.H., Hopmans E.C., Schouten S. and Sinninghe Damsté J.S. Early reactivation of European rivers during the last deglaciation. Science 313, 1623-1625.   Menzel D., Hopmans E.C., Schouten S. and Sinninghe Damsté J.S. Membrane tetraether lipids of planktonic Crenarchaeota in Pliocene sapropels of the eastern Mediterranean Sea. Palaeogeography Palaeoclimatology Palaeoecology 239, 1-15.   Rohling E.J., Hopmans E.C. and Sinninghe Damsté J.S. Water column dynamics during the last interglacial anoxic event in the Mediterranean (sapropel S5). Paleoceanography 21, PA2018 1-8.   Schubert, C.J., Coolen, M.J.L., Neretin, L.N., Schippers, A., Abbas, B., Durisch-Kaiser, E., Wehrli, B., Hopmans, E.C., Damste, J.S.S., Wakeham, S., Kuypers, M.M.M. Aerobic and anaerobic methanotrophs in the Black Sea water column. Environ. Microbiol. 8, 1844-1856. Weijers J.W.H, Schouten S., Hopmans E.C., Geenevasen J.A.J., David O.R.P., Coleman J., Pancost R.D. and Sinninghe Damsté J.S. Membrane lipids of mesophilic anaerobic bacteria thriving in peats have typical archaeal traits. Environ. Microbiol. 8, 648-657.

2005

Elvert, E., Hopmans, E.C., Treude, T., Boetius, A., Suess, E.  Spatial variations of methanothrophic consortia at cold methane seeps: Implications from a high-resolution molecular and isotopic approach. Geobiology 3, 195-209.   Hopmans, E.C., Schouten, S., Rijpstra, W.I.C., Sinninghe Damsté, J.S.  Identification of carotenals in sediments. Org. Geochem. 36, 485-495. Powers, L.A., Werne, J.P., Johnson, T.C., Hopmans, E.C., Damste, J.S.S., Schouten, S. The development of TEX86 for continental paleotemperature reconstruction: Problems and promise. Geochim. Cosmochim. Acta 69, A78.   Powers, L.A., Johnson, T.C, Werne, J.P., Castañeda, I.S., Hopmans, E. Sinninghe Damsté, J.S., Schouten, S. Large temperature variability in the southern African tropics since the Last Glacial Maximum. Geophys. Res. Lett. 32, L08706-10.1029/ 2004GL022014.   Smittenberg, R.H., Baas, M., Green, M.J., Hopmans, E.C., Schouten, S., Sinninghe Damsté, J.S.  Pre- and post-industrial environmental changes as revealed by the biogeochemical sedimentary record of Drammensfjord, Norway. Mar. Geol. 214, 177-200.   Stadnitskaia, A., Muyzer G., Abbas B., Coolen M.J.L., Hopmans E.C., Baas M., Van Weering T.C.E., Ivanov M.K. , Poludetkina E.P. and Sinninghe Damsté J.S. Biomarker and 16S rDNA evidence for anaerobic oxidation of methane and related carbonate precipitation in deep-sea mud volcanoes of the Sorokin Trough, Black Sea. Mar. Geol. 217, 67-96.

2004

Coolen, M.J.L., Hopmans, E.C., Rijpstra, W.I.C., Muyzer, G., Schouten, S., Volkman, J.K., Sinninghe Damsté, J.S.  Evolution of the methane cycle in Ace Lake (Antarctica) during the Holocene: Response of methanogens and methanotrophs to environmental change. Org. Geochem. 35, 1151-1167. Hopmans, E.C., Weijers, J.W.H., Schefuß, E., Herfort, L., Sinninghe Damsté, J.S., Schouten, S.  A novel proxy for terrestrial organic matter in sediments based on branched and isoprenoid tetraether lipids. Earth. Planet. Sc. Lett. 224, 107-116. Schouten, S., Hopmans, E.C., Sinninghe Damsté, J.S.  The effect of maturity and depositional redox conditions on archaeal tetraether lipid palaeothermometry. Org. Geochem. 35, 567-571. Smittenberg, R.H., Hopmans, E.C., Schouten, S., Hayes, J.M., Eglinton, T.I., Sinninghe Damsté, J.S.  Compound-specific radiocarbon dating of the varved Holocene sedimentary record of Saanich Inlet, Canada. Paleoceanography 19. Smittenberg, R.H., Pancost, R.D., Hopmans, E.C., Paetzel, M., Sinninghe Damsté, J.S.  A 400-year record of environmental change in an euxinic fjord as revealed by the sedimentary biomarker record. Palaeogeogr., Palaeoclimatol., Palaeoecol. 202, 331-351. Wakeham, S.G., Hopmans, E.C., Schouten, S., Sinninghe Damsté, J.S.  Archaeal lipids and anaerobic oxidation of methane in euxinic water columns: a comparative study of the Black Sea and Cariaco Basin. Chem. Geol. 205, 427-442.