Dr Anna Lichtschlag

Marine Geoscience
+44 (0)23 8059 6378


I study biogeochemistry of marine sediments and sediment-water exchange processes with a focus on the connections between different element cycles, e.g., the carbon, sulphur, metal and nutrient cycles and the drivers of early diagenetic processes. My main research goals are to better understand the links between marine geochemistry and external stressors (natural and anthropogenic), and the impact on the benthic environment. Examples include (i) early diagenetic processes under low-oxygen conditions, (ii) habitat development and benthic exchange processes at methane seeps and (iii) impact of high-CO2 fluids on the carbonate buffer capacity and the mobilization of metals. Currently I am involved in projects around monitoring of carbon capture and storage sites and mineral resources.

Links to further information on specialist area or projects:




Lichtschlag, A.; Cevatoglu, M.; Connelly, D.P.; James, R.H.; Bull, J.M.. 2018 Increased fluid flow activity in shallow sediments at the 3 km Long Hugin Fracture in the central North Sea. Geochemistry, Geophysics, Geosystems, 19 (1). 2-20.https://doi.org/10.1002/2017GC007181
Jessen, Gerdhard L.; Lichtschlag, Anna; Ramette, Alban; Pantoja, Silvio; Rossel, Pamela E.; Schubert, Carsten J.; Struck, Ulrich; Boetius, Antje. 2017 Hypoxia causes preservation of labile organic matter and changes seafloor microbial community composition (Black Sea). Science Advances, 3 (2). e1601897.10.1126/sciadv.1601897
Klar, J.K.; Homoky, W.B.; Statham, P.J.; Birchill, A.J.; Harris, E.; Woodward, E.M.S.; Silburn, B.; Cooper, M.; James, R.H.; Connelly, D.P.; Chever, F.; Lichtschlag, A.; Graves, C.. 2017 Stability of dissolved and soluble Fe(II) in shelf sediment pore waters and release to an oxic water column. Biogeochemistry, 135 (1-2). 49-67.https://doi.org/10.1007/s10533-017-0309-x
Kasina, M.; Bock, S.; Würdemann, H.; Pudlo, D.; Pickard, A.; Lichtschlag, A.; März, C.; Wagenknecht, L.; Wehrmann, L.M.; Vogt, C.; Ferdelman, T.G.; Meister, P.. 2017 Mineralogical and geochemical analysis of Fe-phases in drill-cores from the Triassic Stuttgart Formation at Ketzin CO2 storage site before CO2 arrival. Environmental Earth Sciences, 76 (4). 161.10.1007/s12665-017-6460-9
Falcon Suarez, Ismael; Marin Moreno, Hector; Browning, Fraser; Lichtschlag, Anna; Robert, Katleen; North, Laurence J.; Best, Angus I.. 2017 Experimental assessment of pore fluid distribution and geomechanical changes in saline sandstone reservoirs during and after CO2 injection. International Journal of Greenhouse Gas Control, 63. 356-369.10.1016/j.ijggc.2017.06.019
Hassenrück, Christiane; Fink, Artur; Lichtschlag, Anna; Tegetmeyer, Halina E.; de Beer, Dirk; Ramette, Alban; King, Gary. 2016 Quantification of the effects of ocean acidification on sediment microbial communities in the environment: the importance of ecosystem approaches. FEMS Microbiology Ecology, 92 (5). fiw027.10.1093/femsec/fiw027
Jessen, Gerdhard L.; Lichtschlag, Anna; Struck, Ulrich; Boetius, Antje. 2016 Distribution and composition of thiotrophic mats in the hypoxic zone of the Black Sea (150–170 m water depth, Crimea Margin). Frontiers in Microbiology, 7. 1011.10.3389/fmicb.2016.01011
Lichtschlag, Anna; James, Rachael H.; Stahl, Henrik; Connelly, Douglas. 2015 Effect of a controlled sub-seabed release of CO2 on the biogeochemistry of shallow marine sediments, their pore waters, and the overlying water column. International Journal of Greenhouse Gas Control, 38. 80-92.10.1016/j.ijggc.2014.10.008
Blackford, Jerry; Bull, Jonathan M.; Cevatoglu, Melis; Connelly, Douglas; Hauton, Chris; James, Rachael H.; Lichtschlag, Anna; Stahl, Henrik; Widdicombe, Steve; Wright, Ian C.. 2015 Marine baseline and monitoring strategies for Carbon Dioxide Capture and Storage (CCS). International Journal of Greenhouse Gas Control, 38. 221-229.10.1016/j.ijggc.2014.10.004
Tsukasaki, Ayumi; Suzumura, Masahiro; Lichtschlag, Anna; Stahl, Henrik; James, Rachael H.. 2015 Phosphorus behavior in sediments during a sub-seabed CO2 controlled release experiment. International Journal of Greenhouse Gas Control, 38. 102-109.10.1016/j.ijggc.2014.12.023
Atamanchuk, Dariia; Tengberg, Anders; Aleynik, Dmitry; Fietzek, Peer; Shitashima, Kiminori; Lichtschlag, Anna; Hall, Per O.J.; Stahl, Henrik. 2015 Detection of CO2 leakage from a simulated sub-seabed storage site using three different types of pCO2 sensors. International Journal of Greenhouse Gas Control, 38. 121-134.10.1016/j.ijggc.2014.10.021
Taylor, Peter; Lichtschlag, Anna; Toberman, Matthew; Sayer, Martin D.J.; Reynolds, Andy; Sato, Toru; Stahl, Henrik. 2015 Impact and recovery of pH in marine sediments subject to a temporary carbon dioxide leak. International Journal of Greenhouse Gas Control, 38. 93-101.10.1016/j.ijggc.2014.09.006
Taylor, Peter; Stahl, Henrik; Vardy, Mark E.; Bull, Jonathan M.; Akhurst, Maxine; Hauton, Chris; James, Rachael H.; Lichtschlag, Anna; Long, David; Aleynik, Dmitry; Toberman, Matthew; Naylor, Mark; Connelly, Douglas; Smith, David; Sayer, Martin D.J.; Widdicombe, Steve; Wright, Ian C.; Blackford, Jerry. 2015 A novel sub-seabed CO2 release experiment informing monitoring and impact assessment for geological carbon storage. International Journal of Greenhouse Gas Control, 38. 3-17.10.1016/j.ijggc.2014.09.007
Lichtschlag, A.; Donis, D.; Janssen, F.; Jessen, G. L.; Holtappels, M.; Wenzhöfer, F.; Mazlumyan, S.; Sergeeva, N.; Waldmann, C.; Boetius, A.. 2015 Effects of fluctuating hypoxia on benthic oxygen consumption in the Black Sea (Crimean shelf). Biogeosciences, 12 (16). 5075-5092.10.5194/bg-12-5075-2015
Friedrich, J.; Janssen, F.; Aleynik, D.; Bange, H.W.; Boltacheva, N.; Çagatay, M.N.; Dale, A.W.; Etiope, G.; Erdem, Z.; Geraga, M.; Gilli, A.; Gomoiu, M.T.; Hall, P.O.J.; Hansson, D.; He, Y.; Holtappels, M.; Kirf, M.K.; Kononets, M.; Konovalov, S.; Lichtschlag, A.; Livingstone, D.M.; Marinaro, G.; Mazlumyan, S.; Naeher, S.; North, R.P.; Papatheodorou, G.; Pfannkuche, O.; Prien, R.; Rehder, G.; Schubert, C.J.; Soltwedel, T.; Sommer, S.; Stahl, H.; Stanev, E.V.; Teaca, A.; Tengberg, A.; Waldmann, C.; Wehrli, B.; Wenzhöfer, F.. 2014 Investigating hypoxia in aquatic environments: diverse approaches to addressing a complex phenomenon. Biogeosciences, 11 (4). 1215-1259.10.5194/bg-11-1215-2014
Blackford, Jerry; Stahl, Henrik; Bull, Jonathan M.; Bergès, Benoît J.P.; Cevatoglu, Melis; Lichtschlag, Anna; Connelly, Douglas; James, Rachael H.; Kita, Jun; Long, Dave; Naylor, Mark; Shitashima, Kiminori; Smith, Dave; Taylor, Peter; Wright, Ian; Akhurst, Maxine; Chen, Baixin; Gernon, Tom M.; Hauton, Chris; Hayashi, Masatoshi; Kaieda, Hideshi; Leighton, Timothy G.; Sato, Toru; Sayer, Martin D.J.; Suzumura, Masahiro; Tait, Karen; Vardy, Mark E.; White, Paul R.; Widdicombe, Steve. 2014 Detection and impacts of leakage from sub-seafloor deep geological carbon dioxide storage. Nature Climate Change, 4. 1011-1016.10.1038/nclimate2381
Sergeeva, N.G.; Mazlumyan, S.A.; Ça?atay, M.N.; Lichtschlag, A.. 2013 Hypoxic meiobenthic communities of the Istanbul Strait’s (Bosporus) outlet area of the Black Sea. Turkish Journal of Fisheries and Aquatic Sciences, 13 (1). 33-41.10.4194/1303-2712-v13_1_05
Felden, J.; Lichtschlag, A.; Wenzhöfer, F.; de Beer, D.; Feseker, T.; Pop Ristova, P.; de Lange, G.; Boetius, A.. 2013 Limitations of microbial hydrocarbon degradation at the Amon mud volcano (Nile deep-sea fan). Biogeosciences, 10 (5). 3269-3283.10.5194/bg-10-3269-2013
Lichtschlag, Anna; Kamyshny, Alexey; Ferdelman, Timothy G.; deBeer, Dirk. 2013 Intermediate sulfur oxidation state compounds in the euxinic surface sediments of the Dvurechenskii mud volcano (Black Sea). Geochimica et Cosmochimica Acta, 105. 130-145.10.1016/j.gca.2012.11.025
Decker, Carole; Morineaux, Marie; Van Gaever, Saskia; Caprais, Jean-Claude; Lichtschlag, Anna; Gauthier, Olivier; Andersen, Ann C.; Olu, Karine. 2012 Habitat heterogeneity influences cold-seep macrofaunal communities within and among seeps along the Norwegian margin. Part 1: macrofaunal community structure. Marine Ecology, 33 (2). 205-230.10.1111/j.1439-0485.2011.00503.x
Grünke, S.; Lichtschlag, Anna; de Beer, D.; Felden, J.; Salman, V.; Ramette, A.; Schulz-Vogt, H.N.; Boetius, A.. 2012 Mats of psychrophilic thiotrophic bacteria associated with cold seeps of the Barents Sea. Biogeosciences, 9 (8). 2947-2960.10.5194/bg-9-2947-2012
Girnth, Anne-Christin; Grünke, Stefanie; Lichtschlag, Anna; Felden, Janine; Knittel, Katrin; Wenzhöfer, Frank; de Beer, Dirk; Boetius, Antje. 2011 A novel, mat-forming Thiomargarita population associated with a sulfidic fluid flow from a deep-sea mud volcano. Environmental Microbiology, 13 (2). 495-505.10.1111/j.1462-2920.2010.02353.x
Grunke, S.; Felden, J.; Lichtschlag, A.; Girnth, A-C.; De Beer, D.; Wenzhofer, F.; Boetius, A.. 2011 Niche differentiation among mat-forming, sulfide-oxidizing bacteria at cold seeps of the Nile Deep Sea Fan (Eastern Mediterranean Sea). Geobiology, 9 (4). 330-348.10.1111/j.1472-4669.2011.00281.x
Grünke, Stefanie; Lichtschlag, Anna; Beer, Dirk de; Kuypers, Marcel; Lösekann-Behrens, Tina; Ramette, Alban; Boetius, Antje. 2010 Novel observations of Thiobacterium, a sulfur-storing Gammaproteobacterium producing gelatinous mats. The ISME Journal, 4 (8). 1031-1043.10.1038/ismej.2010.23
Lichtschlag, Anna; Felden, Janine; Bruchert, Volker; Boetius, Antje; de Beer, Dirk. 2010 Geochemical processes and chemosynthetic primary production in different thiotrophic mats of the Hakon Mosby Mud Volcano (Barents Sea). Limnology and Oceanography, 55 (2). 931-949.10.4319/lo.2010.55.2.0931
Lichtschlag, Anna; Felden, Janine; Wenzhöfer, Frank; Schubotz, Florence; Ertefai, Tobias F.; Boetius, Antje; de Beer, Dirk. 2010 Methane and sulfide fluxes in permanent anoxia: In situ studies at the Dvurechenskii mud volcano (Sorokin Trough, Black Sea). Geochimica et Cosmochimica Acta, 74 (17). 5002-5018.10.1016/j.gca.2010.05.031
Preisler, André; de Beer, Dirk; Lichtschlag, Anna; Lavik, Gaute; Boetius, Antje; Jørgensen, Bo Barker. 2007 Biological and chemical sulfide oxidation in a Beggiatoa inhabited marine sediment. The ISME Journal, 1 (4). 341-353.10.1038/ismej.2007.50

Book section

Kolesnikova, E.A.; Zaika, V.E.; Sergeeva, N.G.; Lichtschlag, A.. 2014 Harpacticoida (Copepoda) under hypoxia conditions in the Black Sea. In: Seuront, L., (ed.)Copepods: diversity, Habitat and Behavior. New York, Nova Science, 51-76, 291pp.
Sergeeva, Nelli G.; Gooday, Andrew J.; Mazlumyan, Sofia A. ; Kolesnikova, Elena A. ; Lichtschlag, Anna; Kosheleva, Tetiana N. ; Anikeeva, Oksana V. . 2012 Meiobenthos of the Oxic/Anoxic Interface in the Southwestern Region of the Black Sea: Abundance and Taxonomic Composition. In: Altenbach, Alexander V.; Bernhard, Joan M.; Seckbach, Joseph , (eds.)Anoxia: Evidence for Eukaryote Survival and Paleontological Strategies. Hamburg, Springer, 369-401, 648pp. (Cellular Origin, Life in Extreme Habitats and Astrobiology, 21).