个人简介
Role
Lecturer in Organic Chemistry
Qualifications
2013 PhD Marine Organic Biogeochemistry Utrecht University, Utrecht, The Netherlands 2008 Dipl.Ing. (=MChem) Chemistry / Biochemistry Graz University of Technology, Graz, Austria 2007/2008 Exchange programme Cranfield University, Cranfield, UK 2004/2005 Socrates/Erasmus exchange programme University of Oviedo, Oviedo, Spain
研究领域
Past, present and future of methane emissions from wetlands: Identifying pathways of methanogenesis via the carbon stable isotopic composition of biomarkers. Methane, a potent greenhouse gas, plays a crucial role in the global climate system. The majority of methane emissions is produced by methanogenic archaea in wetlands. These organisms generate methane mainly via two pathways: fermentation of acetate, a product of organic matter degradation, and CO2 reduction with hydrogen. Relative amounts of methane produced by each pathway differ amongst settings, and which pathway is dominant depends on various environmental conditions. To assess the global methane budget both today and in the past, it is crucial to be able to distinguish between these pathways. However, methane formation in ancient settings cannot yet be determined. A promising approach could be the carbon isotopic composition of methanogen derived lipids since the two pathways appear to result in lipids with different values. As this is based on limited data, I propose to develop a novel method for the rapid determination of the stable carbon isotope composition of tetraether lipids. I will study the suitability of tetraether lipids as biomarkers for methanogens and their isotopic compositions as potential proxy for methanogenic pathways, and apply this proxy to past environments, thereby increasing our understanding of the methane cycle in the past, present and future.
近期论文
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Naeher S, Lengger SK & Grice K 2016 'A new method for the rapid analysis of 1H-Pyrrole-2,5-diones (maleimides) in environmental samples by two-dimensional gas chromatography time-of-flight mass spectrometry' Journal of chromatography. A 1435, 125-135 , DOI PEARL
Frank RA, Milestone CB, Rowland SJ, Headley JV, Kavanagh RJ, Lengger SK, Scarlett AG, West CE, Peru KM & Hewitt LM 2016 'Assessing spatial and temporal variability of acid-extractable organics in oil sands process-affected waters' CHEMOSPHERE 160, 303-313 Author Site , DOI PEARL
Lengger SK, Fromont J & Grice K 2016 'Tapping the archives: the sterol composition of marine sponge species, as determined non-invasively from museum-preserved specimens, reveals biogeographical features' Geobiology , DOI PEARL
Fromont J, Huggett MJ, Lengger SK, Grice K & Schönberg CHL 2015 'Characterization of Leucetta prolifera, a calcarean cyanosponge from south-western Australia, and its symbionts' Journal of the Marine Biological Association of the United Kingdom 1-12 , DOI PEARL
Jean MRN, Gonzalez-Rizzo S, Gauffre-Autelin P, Lengger SK, Schouten S & Gros O 2015 'Two new Beggiatoa species inhabiting marine mangrove sediments in the Caribbean' PloS one 10, (2) , DOI
Lengger SK, Scarlett AG, West CE, Frank RA, Hewitt LM, Milestone CB & Rowland SJ 2015 'Use of the distributions of adamantane acids to profile short-term temporal and pond-scale spatial variations in the composition of oil sands process-affected waters' ENVIRONMENTAL SCIENCE-PROCESSES & IMPACTS 17, (8) 1415-1423 Author Site , DOI PEARL
West CE, Pureveen J, Scarlett AG, Lengger SK, Wilde MJ, Korndorffer F, Tegelaar EW & Rowland SJ 2014 'Can two-dimensional gas chromatography/mass spectrometric identification of bicyclic aromatic acids in petroleum fractions help to reveal further details of aromatic hydrocarbon biotransformation pathways?' Rapid Commun Mass Spectrom 28, (9) 1023-1032 Author Site , DOI PEARL
Lengger SK, Hopmans EC, Sinninghe Damsté JS & Schouten S 2014 'Fossilization and degradation of archaeal intact polar tetraether lipids in deeply buried marine sediments (Peru Margin)' Geobiology 12, (3) 212-220 Author Site , DOI
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