Accessibility statement

Dr Helen Marie Talbot
Experimental officer



Helen is the mass spectrometry instrument technician in BioArCh. She holds a BSc in Environmental Chemistry from the University of Edinburgh and a PhD in Organic Geochemistry from the University of Bristol where she worked with Prof. James Maxwell (FRS) on phytoplankton pigment geochemistry.

Helen came to York in 2017 to take up the post of Experimental Officer working with Oliver Craig and Michelle Alexander specializing in GC-MS of lipid residues in archaeological materials and GC-c-IRMS analysis of lipids and amino acids.



Experimental Officer in BioArCh (University of York)


Reader in Organic Geochemisty (Newcastle University) and holder of ERC starting independent researcher award AMOProx: Quantifying Aerobic Methane Oxidation in the Ocean – Calibration and Paleoapplication of a Novel Proxy.


Experimental Officer in Liquid Chromatography Mass Spectrometry (Newcastle University)


Post doctoral research associate (Newcastle University)


PhD Student at University of Bristol. NERC funded project with Prof. James Maxwell FRS. Thesis title - Steryl Chlorin Esters: Origin, significance and potential as indicators of phytoplankton community structure.

Departmental roles

Helen’s main role is in the maintenance and running of the GC-FID, GC-MS, EA-IRMS and GC-c-IRMS instruments in BioArCh as well as method development for amino acid compound specific isotope analysis. She is working with Dr Oliver Craig and Dr Michelle Alexander and other researchers and students in BioArCh on a number of research projects covering archaeological material from a diverse range of settings and time periods.


Full publications list

Admiraal, M., Colonese, A. C., Milheira, R. G., da Rocha Bandeira, D., Demathe, A., Pereira dos Santos, A. M., Fossile, T., Talbot, H. M., Bondetti, M., Lucquin, A., Montalvo-Cabrera, J., Prates, L., Serna, A., Craig, O. E., 2023. Chemical analysis of pottery reveals the transition from a maritime to a plant-based economy in pre-colonial coastal Brazil. Scientific Reports. 13, 1, 9 p., 16771.

Admiraal, M., Jordan, P. D., Talbot, H. M., Craig, O. E., Serna, A., Taché, K., von Tersch, M., Hendy, J., McGrath, K., Craig, O. E., Lucquin, A., 2023, The role of salmon fishing in the adoption of pottery technology in subarctic Alaska. Journal of Archaeological Science. 157, 11 p., 105824.

Dolbunova, E., Lucquin, A. J. A., McLaughlin, R., Bondetti, M., Courel, B., Oras, E., Piezonka, H., Robson, H. K., Talbot, H. M., Adamczak, K., Andreev, K., Asheichyk, V., Charniauski, M., Czekaj-Zastawny, A., Ezepenko, I., Grechkina, T., Gunnarssone, A., Gusentsova, T. M., Haskevych, D., Ivanischeva, M., & 24 others, 2023. The transmission of pottery technology among prehistoric European hunter-gatherers. Nature Human Behaviour. 7, p. 171-183 16 p.

Fontanals-Coll, M., Soncin, S., Talbot, H.M., von Tersch, M., Gibaja, J.F., Colonese, A.C., Craig, O.E., 2023. Stable isotope analyses of amino acids reveal the importance of aquatic resources to Mediterranean coastal hunter–gatherers. Proceedings of the Royal Society B: Biological Sciences 290: 20221330.

Lucquin, A. J. A., Robson, H. K., Oras, E., Lundy, J., Moretti, G., Gonzalez Carretero, L., Dekker, J., Demirci, Ö., Dolbunova, E., McLaughlin, T. R., Piezonka, H., Talbot, H. M., Adamczak, K., Czekaj-Zastawny, A., Groß, D., Gumiński, W., Hartz, S., Kabaciński, J., Koivisto, S., Linge, T. E., & 10 others, 2023. The impact of farming on prehistoric culinary practices throughout Northern Europe. Proceedings of the National Academy of Sciences of the United States of America. 120, 43, 7 p., e2310138120.

Lundy, J., Drieu, L., Orecchioni, P., Meo, A., Aniceti, V., Fiorentino, G., Primavera, M., Talbot, H. M., Molinari, A., Carver, M. O. H., Craig, O. E., 2023, Cuisine in transition? Organic residue analysis of domestic containers from 9th-14th century Sicily. Royal Society Open Science. 10, 17 p., 221305.

Taylor, W.T.T.,Belardi, J.B.,Barberena, R.,Coltrain, J.B.,Marina, F.C.,Borrero, L.A.,Conver, J.L.,Hodgins, & Others, 2023. Interdisciplinary evidence for early domestic horse exploitation in southern Patagonia. Science advances 9 (49) ,pp.eadk5201

Murakami, N., Onggaruly, A., Rakhimzhanova, S., Standall, E. A., Talbot, H. M., Lucquin, A., Suzuki, M., Karimagambetov, A., Nuskabay, A., Nam, S. W., Craig, O. E., Shoda, S., 2022. Lipid residues in ancient pastoralist pottery from Kazakhstan reveal regional differences in cooking practices. Frontiers in Ecology and Evolution. 10, 16 p., 1032637.

Soncin, S., Talbot, H. M., Fernandes, R., Harris, A., von Tersch, M., Robson, H. K., Bakker, J. K., Richter, K. K., Alexander, M., Ellis, S., Thompson, G., Amoretti, V., Osanna, M., Caso, M., Sirano, F., Fattore, L., Colonese, A. C., Garnsey, P., Bondioli, L., Craig, O. E., 2021. High-resolution dietary reconstruction of victims of the 79 CE Vesuvius eruption at Herculaneum by compound-specific isotope analysis. Science Advances. 7, 35, 9 p., eabg5791.

Courel, B., Robson, H. K., Lucquin, A. J. A., Dolbunova, E., Oras, E., Adamczak, K., Andersen, S., Moe Astrup, P., Charniauski, M., Czekaj-Zastawny, A., Ezepenko, I., Hartz, S., Kabaciński, J., Kotula, A., Kukawka, S., Loze, I., Mazurkevich, A., Piezonka, H., Piličiauskas, G., Sørensen, S. A., Talbot, H.M., & 6 others, 2020. Organic residue analysis shows sub-regional patterns in the use of pottery by Northern European hunter–gatherers. Royal Society Open Science. 7, 192016, 16 p.

Schwartz-Narbonne, R., Schaeffer, P., Hopmans, E.C., Schenesse, M., Charlton, E.A., Jones, D.M., Sinninghe Damsté, J.S., Farhan Ul Haque, M., Jetten, M.S.M., Lengger, S.K., Murrell, J.C., Normand, P., Nuijten, G.H.L, Talbot, H.M., Rush, D., 2020. A unique bacteriohopanetetrol stereoisomer of marine anammox. Organic Geochemistry, 143, 103994.

van Winden, J.F., Talbot, H.M., Reichart, G.-J., McNamara, N.P., Benthien, A., Sinninghe Damsté., J. S., 2020. Influence of temperature on the δ13C values and distribution of methanotroph-related hopanoids in Sphagnum-dominated peat bogs. Geobiology, Geobiology 18:497–507.

Zindorf, M., Rush, D., Jaeger, J., Mix, A., Penkrot, M.L., Schnetger, B., Sidgwick, F.R., Talbot, H.M., van der Land, C., Wagner, T., Walczak, M., März, C., 2020. Reconstructing oxygen deficiency in the glacial Gulf of Alaska: Combining biomarkers and trace metals as paleo-redox proxies. Chemical Geology 558, 119864.

Lengger, S. K., Rush, D., Mayser, J. P., Blewett, J., Schwartz‐Narbonne, R., Talbot, H. M., & others 2019. Dark carbon fixation in the Arabian Sea oxygen minimum zone contributes to sedimentary organic carbon (SOM). Global Biogeochemical Cycles, 33,

Rush, D., Talbot, H. M., van der Meer, M. T. J., Hopmans, E. C., Douglas, B., and 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, 2467–2479,, 2019.

Probert, P.M., Leitch, A.C., Dunn, M.P., Meyer, S.K., Palmer, J.M., Abdelghany, T.M., Lakey, A.F., Cooke, M.P., Talbot, H., Wills, C. et al. 2018. Identification of a xenobiotic as a potential environmental trigger in primary biliary cholangitis. Journal of Hepatology DOI: 10.1016/j.jhep.2018.06.027

Bauersachs, T., Talbot, H.M., Sidgwick, F., Sivonen, K., Schwark, L., 2017. Lipid biomarker signatures as tracers for harmful cyanobacterial blooms in the Baltic Sea. PLoS ONE 12(10): e0186360. pone.0186360

Spencer-Jones, C.L., Wagner, T., Talbot, H.M., 2017. A record of aerobic methane oxidation in tropical Africa over the last 2.5 Ma. Geochimica et Cosmochimica Acta 218, 27–39.

Osborne, K.A., Gray, N.D., Sherry, A., Leary, P., Mejeha, O., Bischoff, J., Rush, D., Sidgwick, F., Birgel, D., Kalyuzhnaya, M.G., Talbot, H.M. Methanotroph-derived bacteriohopanepolyol signatures as a function of temperature related growth, survival, cell death and preservation in the geological record. Environmental Microbiology Reports DOI: 10.1111/1758-2229.12570

Bischoff, J., Sparkes, R.B, Doğrul Selver, A., Spencer, R.G.M., Gustafson, Ö., Semiletov, I.P., Dudarev, O.V., Wagner, D., Rivkina, E., van Dongen, B.E., Talbot, H.M., 2016. Source, transport and fate of soil organic matter inferred from microbial biomarker lipids in the East Siberian Arctic Shelf. Biogeosciences 13, 4899–4914; doi:10.5194/bg-13-4899-2016

De Jonge, C.J., Talbot, H.M., Bischoff, J., Stadnitskaia, A., Charkashov, G., Sinninghe Damsté, J.S., 2016. Bacteriohopanepolyol distribution in Yenisei River and Kara Sea suspended particulate matter and sediments traces terrigenous organic matter input. Geochimica et Cosmochimica Acta 174, 85–101.

Rush, D., Osborne, K.A., Birgel, D., Kappler, A., Hirayama, H., Peckmann, J., Poulton, S., Nickel, J., Mangelsdorf, K., Kalyuzhnaya, M., Sidgwick, F.R., Talbot, H.M. The bacteriohopanpolyol inventory of novel aerobic methane oxidising bacteria reveals new biomarker signatures of aerobic methanotrophy in marine systems. PLoSOne 11(11): e0165635. doi:10.1371/journal .pone.0165635

Schefuß, E., Eglinton, T.I., Spencer-Jones, C.L., Rullkötter, J., De Pol Holz, R., Talbot, H.M., Grootes, P.M., Schneider, R.R., 2016. Hydrologic control of carbon cycling and aged carbon discharge in the Congo River basin. Nature Geoscience 9, 687-690; doi:10.1038/ngeo2778

Sherry, A., Osborne, K.A., Sidgwick, F., Gray, N.D., Talbot, H.M., 2016. A temperate river estuary is a sink for methanotrophs adapted to extremes of pH, temperature and salinity. Environmental Microbiology Reports 8, 122-131.

Sparkes, R.B., Doğrul Selver, A., Gustafson, Ö., Semiletov, I.P, Haghipour, N., Wacker, L., Eglinton, T.I., Talbot, H.M., van Dongen, B.E., 2016. Macromolecular composition of terrestrial and marine organic matter in sediments across the East Siberian Arctic Shelf. The Cryosphere 10, 2485-2500, 2016; doi: 10.5194/tc-10-2485-2016

Talbot, H.M., Bischoff, J., Inglis, G.N., Collinson, M.E., Pancost, R.D., 2016. Polyfunctionalised bio- and geohopanoids in the Eocene Cobham Lignite. Organic Geochemistry 96, 77-92.

Talbot, H.M., McClymont, E., Inglis, G.N., Evershed, R. Pancost, R.D., 2016. Origin and preservation of bacteriohopanepolyol and geohopanoid signatures in Sphagnum peat from Bissendorfer Moor (Germany). Organic Geochemistry 97, 95-110.

Talbot, H.M., Sidgwick, F., Bischoff, J., Osborne, K.A., Rush, D., Sherry, A., Spencer-Jones, C.L., 2016. Analysis of non-derivatised bacteriohopanepolyols by ultrahigh-performance liquid chromatography/tandem mass spectrometry. Rapid Communications in Mass Spectrometry 30, 2087-2098. doi: 10.1002/rcm.7696

Doğrul Selver, A., Sparkes, R.B., Bischoff, J., Talbot, H.M., Gustafsson, Ö., Semilitov, I., Dudarev, O., Boult, S., van Dongen, B.E., 2015. Distributions of bacterial and archaeal membrane lipids in surface sediments reflect differences in input and loss of terrestrial organic carbon along a cross-shelf Arctic transect. Organic Geochemistry 83-84, 16-26.

Höfle, S., Kusch, S., Talbot, H.M., Mollenhauer, G., Zubrzycki, S., Burghardt, S., Rethemeyer, J. 2015. Characterization of bacterial populations in Arctic permafrost soils using bacteriohopanepolyols. Organic Geochemistry 88, 1-16.

Sparkes, R., Doğrul Selver, A., Bischoff, J., Talbot, H.M., Gustafsson, Ö., Semiletov, I., Dudarev, O., van Dongen, B.E., 2015. GDGT distributions on the East Siberian Shelf: implications for organic carbon export, burial and degradation. Biogeosciences, 12, 3753-3768, 2015 (doi:10.5194/bg-12-3753-2015)

Spencer-Jones, C.L., Wagner, T., Dinga, B.J., Schefuβ, E., Mann, P.J., Poulsen, J.R., Spencer, R.G.M., Wabakanghanzi, J.N., Talbot, H.M., 2015. Bacteriohopanepolyols in tropical soils and sediments: sources and trends. Organic Geochemistry 89-90, 1-13.

Eickhoff, M., Birgel, D., Talbot, H.M., Peckmann, J., Kappler, A., 2014. Early diagenetic degradation products of bacteriohopanepolyols produced by Rhodopseudomonas palustris strain TIE-1. Organic Geochemistry 68, 31–38.

Gibson, R.A., Sherry, A., Kaur, G., Pancost, R.D., Talbot, H.M., 2014. Bacteriohopanepolyols preserved in silica sinters from Champagne Pool (New Zealand) record the environmental history of the vent. Organic Geochemistry 69, 61–69.

Kool, D.M., Talbot, H.M., Rush, D., Ettwig, K., Sinninghe Damsté, J.S., 2014. Rare bacteriohopanepolyols as markers for an autotrophic, intra-aerobic methanotroph. Geochimica et Cosmochimica Acta 136, 114-125.

Liu, W., Sakr, E., Schaeffer, P., Talbot, H.M., Kannenberg, E., Donisi, J., Poralla, K., Takano, E., Rohmer, M. Ribosylhopane, a novel bacterial hopanoid, as precursor of C35 bacteriohopanepolyols in Streptomyces coelicolor A3(2). ChemBiochem. 15, 2156-2161.

Rush, D., Sinninghe Damsté, J.S., Poulton, S.W., Thamdrup, B., Garside, A.L., Acuña González, J., Schouten, S., Jetten, M.S.M., Talbot, H.M., 2014. Anaerobic ammonium-oxidising bacteria: the only known biological source of the bacteriohopanetetrol stereoisomer in marine sediments. Geochimica et Cosmochimica Acta 140, 50-64.

Talbot, H.M., Handley, L., Spencer-Jones, C.L., Dinga, B.J., Schefuß E., Mann, P.J., Poulsen, J.R., Spencer, R.G.M., Wabakanghanzi, J.N., Wagner, T., 2014. Variability in aerobic methane oxidation over the past 1.2 Myrs recorded in microbial biomarker signatures from Congo fan sediments. Geochimica et Cosmochimica Acta 133, 387-401.

Wagner, T., Kallweit, W., Talbot, H.M., Mollenhauer, G., Boom, A., Zabel, M., 2014. Microbial biomarkers support organic carbon transport from Amazon wetlands to the shelf and deep fan during recent and glacial climate conditions. Organic Geochemistry 67, 85-98.

Eickhoff, M., Birgel, D., Talbot, H.M., Peckmann, J., Kappler, A., 2013a. Oxidation of Fe(II) leads to increased C-2 methylation of pentacyclic triterpenoids in the anoxygenic phototrophic bacterium Rhodopseudomonas palustris strain TIE-1. Geobiology 11, 268-278.

Eickhoff, M., Birgel, D., Talbot, H.M., Peckmann, J., Kappler, A., 2013b. Bacteriohopanoid inventory of Geobacter sulfurreducens and Geobacter metallireducens. Organic Geochemistry 58, 107-114.

McAnena, A., Flögel, S., Hofmann, P., Herrles, J.O., Griesand, A., Pross, J., Talbot H.M., Rethemeyer, J., Wallmann, K., Wagner T., 2013. Atlantic cooling associated with a marine biotic crisis during the mid-Cretaceous period. Nature Geoscience 6, 558-561.

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., Doğrul Selver, A., Dutta, K., Eglinton, T., Fosse, C., Galy, V., Grice, K., Hinrichs, K.-U., Huang, Y., Huguet, A., Huguet, C., Hurley, S., Ingalls, A., Jia, G., Keely, B., Knappy, C., Kondo, M., Krishnan, S., Lincoln, S., Lipp, J., Mangelsdorf, K., Martínez-García, 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., Yang, H., Zhang, C.L., Zhang, Y., Zhao, M., Sinninghe Damsté, J.S., 2013. An interlaboratory study of TEX86 and BIT analysis of sediments, extracts, and standard mixtures. Geochemistry, Geophysics, Geosystems 14, 5263-5285. Number 12 doi: 10.1002/2013GC004904

Zhu, C., Wagner, T., Talbot, H.M., Weijers, J.W.H., Pan, J.-M., Pancost, R.D. 2013. Mechanistic controls on diverse fates of terrestrial organic components in the East China Sea. Geochimica et Cosmochimica Acta 117, 129-143.

Doğrul Selver, A., Talbot, H.M., Gustafsson, Ö, Boult, S., van Dongen B.E., 2012. Soil organic matter transport along a sub-Arctic river-sea transect. Organic Geochemistry 51, 63-72.

McClymont, E.L., Ganeshram, R.S., Pichevin, L.E., Talbot, H.M., van Dongen, B.E., Thunell, R. Haywood, A.M., Singarayer, J.S., Valdes, P.J., 2012. Sea-surface temperature records of Termination 1 in the Gulf of California: Challenges for seasonal and interannual analogues of tropical Pacific climate change. Paleoceanography 27, PA2202, doi:10.1029/2011PA002226

van Winden, J.F., Talbot, H.M., Kip, N., Reichart, G.-J., Pol, A., McNamara, N.P., Jetten, M.S.M., Op den Camp, H.J.M., Sinninghe Damsté, J.S., 2012. Bacteriohopanepolyol signatures as markers for methanotrophic bacteria in peat moss. Geochimica et Cosmochimica Acta 77, 52-61.

van Winden, J.F., Talbot, H.M., De Vleeschouwer, F., Reichart, G.-J., Sinninghe Damsté, J.S., 2012. Variation in methanotroph-related proxies in peat deposits from Misten Bog, Hautes-Fagnes, Belgium. Organic Geochemistry 53, 73-79.

Chi Fru, E., Gray, N.D., McCann, C., Baptista, J. De C., Christgen, B., Talbot, H.M., Ghazouani, A. E., Dennison, C., Grahma, D.W., 2011. Effects of copper mineralogy and methanobactin on cell growth and sMMO activity in Methylosinus trichosporium OB3b. Biogeosciences 8, 1-8.

Kim, J.-J., Talbot, H.M., Zarzycka, B., Bauersach, T., Wagner, T., 2011. Occurrence and abundance of soil-specific bacterial membrane lipid markers in the Têt watershed (Southern France): Soil-specific BHPs and branched GDGTs. Geochemistry, Geophysics, Geosystems 12(2) DOI: 10.1029/2010GC003364.

Mondamert, L., Labanowski, J., N’Goye, F., Talbot, H.M., Croué, J.-P., 2011. High Pressure membrane foulants of Seawater, Brackish water and River water: Origin assessed by sugar and bacteriohopanepolyol signatures. Biofouling 27, 21-32.

Pearson, E.J., Juggins, S., Talbot, H.M., Weckström, J., Rosén, P., Ryves, D.B., Roberts, S.J., Schmidt, R., 2011. A lacustrine GDGT-temperature calibration from the Scandinavian Arctic to Antarctic: renewed potential for the application of GDGT-paleothermometry in lakes, Geochimica et Cosmochimica Acta 75, 6225–6238.

Zhu, C., Talbot, H.M., Wagner, T., Pan, J.-M., Pancost, R.D., Distribution of hopanoids along a land to sea transect: implications for microbial ecology and the use of hopanoids in environmental studies. Limnology and Oceanography 56, 1850-1865.

Berwick, L., Greenwood, P., Meredith, W., Snape, C., Talbot. H.M., 2010. Microscale sealed vessel (MSSV) pyrolysis and hydropyrolysis (Hypy) characterisation of extant and sedimentary organic matter. Journal of Analytical and Applied Pyrolysis 87, 108-116.

Clarke, C.E., Kielar,  F., Talbot, H.M., Johnson, K.L., 2010. Oxidative decolorisation of acid azo dyes by a Mn oxide containing waste. Environmental Science and Technology 44, 1116-1122.

Handley L., Talbot, H.M., Cooke, M.P., Anderson, K.E., Wagner, T., 2010. Bacteriohopanepolyols as tracers for continental and marine organic matter supply and phases of enhanced nitrogen cycling on the late Quaternary Congo deep sea fan. Organic Geochemistry 41, 910-914.

Rethemeyer, J., Schubotz, F., Talbot, H.M., Cooke, M.P., Hinrichs, K.U., Mollenhauer, G. Distribution of polar membrane lipids in permafrost soils and sediments of a small high Arctic catchment. Organic Geochemistry 41, 1130-1145.

Zhu, C., Talbot, H.M., Wagner, T., Pan, J., Pancost R.D., 2010. Intense Aerobic Methane Oxidation in the Yangtze Estuary: A Record from 35-Aminobacteriohopanepolyols in Surface Sediments. Organic Geochemistry 41, 1056-1059.

Cooke, M.P., van Dongen, B.E., Talbot, H.M., Semiletov, I., Shakhova, N., Guo, L., Gustafson, Ö., 2009. Transport of terrestrial organic matter to the Arctic Ocean via the great Arctic rivers. Organic Geochemistry 40, 1151-1159.

Schouten, S., Hopmans, E.C., van der Meer, J., Mets, A., Bard, E., Bianchi, T.S., Diefendorf, A., Escala, M., Freeman, K.H., Furukawa, Y., Huget, C., Ingalls, A., Ménot-Combes, G., Nederbragt, A.J., Oba, M., Pearson, A., Pearson, E.J., Rosell-Melé, A., Schaeffer, P., Shah, S.R., Shanahan, T.M., Smith, R.W., Smittenberg, R., Talbot, H.M., Uchida, M., Van Mooy, B.A.S., Yamamoto, M., Zhang, Z., Sinninghe Damsté, J.S., 2009. An interlaboratory study of TEX86 and BIT analysis using high-performance liquid chromatography-mass spectrometry. Geochemistry, Geophysics, Geosystems 10, Article number Q03012  doi:10.1029/2008GC002332,

Xu, Y., Cooke, M.P., Talbot, H.M., Simpson, M.E., 2009. Bacteriohopanepolyol Signatures of Bacterial Populations in Western Canadian Soils. Organic Geochemistry 40, 79-86.

Cooke, M.P., Talbot, H.M., Wagner, T., 2008. Tracking soil organic carbon transport to continental margin sediments using soil-specific hopanoid biomarkers: a case study from the Congo fan area. Organic Geochemistry 39, 958-971.

Cooke, M.P., Talbot, H.M., Farrimond, P., 2008. Bacterial populations recorded in bacteriohopanepolyol distributions in soils from Northern England. Organic Geochemistry 39, 1347-1350.

Coolen M.J.L, Talbot H.M., Abbas, B.A., Ward, C., Schouten, Volkman, J.K., Sinninghe Damsté, J.S., 2008. Sources for sedimentary bacteriohopanepolyols as revealed by 16S rDNA stratigraphy. Environmental Microbiology 10, 1783-1803.

Gibson R.A., Kaur, P., Pancost, R.D., Mountain, B., Talbot, H.M., 2008. Bacteriohopanepolyol signatures of cyanobacterial and methanotrophic bacterial populations recorded in a geothermal vent sinter. Organic Geochemistry 39, 1020-1023.

Redshaw, C.H., Cooke, M.P., Talbot, H.M., McGrath, S., Rowland, S.J., 2008. Low Biodegradability of Fluoxetine HCl, Diazepam and their Human Metabolites in Sewage Sludge-Amended Soil. Journal of Soils and Sediments 8, 217-230.

Talbot, H.M., Summons, R.E., Jahnke, L.L., Cockell, C.S., Rohmer, M., Farrimond, P., 2008. Cyanobacterial bacteriohopanepolyol signatures from cultures and natural environmental settings. Organic Geochemistry 39, 232-263.

Talbot, H.M., Coolen, M.J.L., Sinninghe Damsté, J.S., 2008. An unusual 17a,21b(H)-bacteriohopanetetrol in Holocene sediments from Ace Lake (Antarctica). Organic Geochemistry 39, 1029-1032.

Talbot, H.M., Farrimond, P., 2007. Bacterial populations recorded in diverse sedimentary biohopanoid distributions. Organic Geochemistry 38, 1212-1225.

Talbot, H.M., Rohmer, M., Farrimond, P., 2007. Rapid structural elucidation of composite bacterial hopanoids by atmospheric pressure chemical ionisation liquid chromatography/ion trap mass spectrometry. Rapid Communications in Mass Spectrometry 21, 880-892.

Talbot, H.M., Rohmer, M., Farrimond, P., 2007. Structural characterisation of unsaturated bacterial hopanoids by atmospheric pressure chemical ionisation liquid chromatography/ion trap mass spectrometry. Rapid Communications in Mass Spectrometry 21, 1613-1622.

Wakeham, S.G., Amann, R., Freeman, K.H., Hopmans, E., Jørgensen, B.B., Putnam, I.F., Schouten, S., Sinninghe Damsté, J.S., Talbot, H.M., Woebken, D., 2007. Microbial ecology of the stratified water column of the Black Sea as revealed by a comprehensive biomarker study. Organic Geochemistry 38, 2070-2097.

Zhang, C.L., Huang, Z., Li, Y.-L., Romanek, C.S., Mills, G., Gibson, R.A., Talbot, H.M., Wiegel, J., Noakes, J., Culp, R., White, D.C., 2007. Lipid biomarkers, carbon isotopes and phylogenetic characterisation of bacteria in California and Nevada hot springs. Geomicrobiology Journal 24, 519–534.

Blumenberg, M., Krüger, M., Nauhaus, K., Talbot, H.M., Oppermann, B.I., Seifert, R., Pape, T., and Michaelis, W., 2006. Biosynthesis of hopanoids by sulfate-reducing bacteria (genus Desulfovibrio). Environmental Microbiology 8, 1220-1227.

Pancost, R.D., Pressley, S., Coleman, J.M., Talbot, H.M., Kelly, S.P., Farrimond, P., Schouten, S., Benning, L., Mountain, B., 2006. Composition and Implications of diverse Lipids in New Zealand Geothermal Sinters. Geobiology 4, 71-92.

van Dongen, B.E., Talbot, H.M., Schouten, S., Pearson, N.P., Pancost, R.D., 2006. Well preserved Paleogene and Cretaceous biomarkers from the Kilwa area, Tanzania. Organic Geochemistry 37, 539-557.

Bednarczyk, A., Carrillo-Hernandez, T., Schaeffer, P., Adam, P., Talbot, H.M., Farrimond, P., Riboulleau, A., Largeau, C., Derenne, S., Rohmer, M., Albrecht, P., 2005. 32,35-Anhydro-bacteriohopanetetrol: An unusual bacteriohopanepolyol widespread in recent and past environments. Organic Geochemistry 36, 673-677.

Pancost, R. D., Zhang, C. L., Tavacoli, J., Talbot, H. M., Farrimond, P., Schouten, S., Sinninghe Damsté, J. S., 2005. Lipid biomarkers preserved in hydrate-associated authigenic carbonate rocks of the Gulf of Mexico. Palaeogeography, Palaeoclimatology, Palaeoecology 227, 48-66.

Sugden, M.A., Talbot, H.M., Farrimond, P., 2005. Flash Pyrolysis – A rapid method for screening bacterial species for the presence of bacteriohopanepolyols. Organic Geochemistry 36, 975-979.

Talbot, H.M., Farrimond, P., Schaeffer, P., Pancost, R.D., 2005.  Bacteriohopanepolyols in hydrothermal vent biogenic silicates. Organic Geochemistry 36, 663-672.

Farrimond, P., Talbot, H.M., Watson, D.F., Schulz, L.K., Wilhelms, A., 2004. Methylhopanoids: Molecular indicators of ancient bacteria and a petroleum correlation tool. Geochimica et Cosmochimica Acta 68, 3873-3882.

Talbot, H.M., Watson, D.F., Pearson, E.J., Farrimond, P., 2003a. Diverse hopanoid compositions in non-marine sediments. Organic Geochemistry 34, 1353-1371.

Talbot, H.M., Squier, A.H., Keely, B.J., Farrimond, P., 2003b. Atmospheric pressure chemical ionisation reversed-phase liquid chromatography/ion trap mass spectrometry of intact bacteriohopanepolyols. Rapid Communications in Mass Spectrometry 17, 728-737.

Talbot, H.M., Summons, R., Jahnke, L., Farrimond, P., 2003c. Characteristic fragmentation of bacteriohopanepolyols during atmospheric pressure chemical ionisation liquid chromatography/ion trap mass spectrometry. Rapid Communications in Mass Spectrometry 17, 2788-2796.

Talbot, H.M., Watson, D.F., Murrell, J.C., Carter, J.F., Farrimond, P., 2001. Analysis of intact bacteriohopanepolyols from methanotrophic bacteria by reversed phase high performance liquid chromatography - atmospheric pressure chemical ionisation - mass spectrometry. Journal of Chromatography A 921, 175-185.

Yacobi, Y.Z., Ostrovsky, I., Talbot, H.M., 2001. Occurrence of high concentrations of a unique degradation product of chlorophyll-a in particles residing below the thermocline throughout a period of oxygen depletion in Lake Kinneret. Journal of Limnology 60, 201-207.

Talbot, H.M., Head, R.N., Harris, R.P., Maxwell, J.R., 2000. Discrimination against 4-methyl sterol uptake during steryl chlorin ester production by copepods. Organic Geochemistry 31, 871-880.

Talbot, H.M., Head, R.N., Harris, R.P., Maxwell, J.R., 1999a. Steryl esters of pyrophaeophorbide b: A sedimentary sink for Chlorophyll b. Organic Geochemistry 30, 1403-1410.

Talbot, H.M., Head, R.N., Harris, R.P., Maxwell, J.R., 1999b. Distribution and stability of steryl chlorin esters in copepod faecal pellets from diatom grazing. Organic Geochemistry 30, 1163-1174.

Kowalewska, G., Winterhalter, B. Talbot, H.M., Maxwell, J.R., Konat, J., 1999. Chlorins in sediments of the Gotland Deep (Baltic Sea). Oceanologia 41, 81-97.

Pearce, G.E.S., Harradine, P.J., Talbot, H.M., Maxwell, J.R., 1998. Sedimentary sterols and steryl chlorin esters: distribution differences and significance. Organic Geochemistry 28, 3-10.

Contact details

Dr Helen Talbot
Experimental Officer
University of York
BioArCh, Environment building
Wentworth Way
YO10 5NG

Tel: (44) 1904 328282