Dr Gennadi Lessin

Marine System Modeller

Contact Details

Gennadi Lessin is specializing in modelling benthic processes and benthic-pelagic interactions using ERSEM. Within NERC Shelf Seas Biogeochemistry programme, he is working on developing the ERSEM benthic model, refining existing and adding new biogeochemical (e.g. benthic carbonate cycle, calcification and detailed redox) and biological (e.g. benthic faunal activity, benthic bacteria) processes and formulations. Within the ECO2 project, the benthic model was modified to include parameterization of benthic faunal response to low pH and used to study impacts of potential carbon dioxide leakage from CCS on zoobenthic groups of variable pH tolerance.

Before joining PML in 2013, Gennadi worked at the Marine Systems Institute at Tallinn University of Technology (Estonia), where he was modelling hydrodynamic and biogeochemical dynamics of the Gulf of Finland. In 2010-2012 he was a Seconded National Expert at Institute for Environment and Sustainability (Ispra, Italy), where he was working on coupled hydrodynamic and biogeochemical modelling of the Baltic Sea.

Key Projects

STEMM-CCS: STrategies for the Environmental Monitoring of Marine CCS

ECO2: Sub-seabed CO2 Storage: Impact on Marine Ecosystems.

SSB: NERC Shelf Seas Biogeochemistry programme


Butenschön, M., Clark, J., Aldridge, J. N., Allen, J. I., Artioli, Y., Blackford, J., Bruggeman, J., Cazenave, P., Ciavatta, S., Kay, S., Lessin, G., van Leeuwen, S., van der Molen, J., de Mora, L., Polimene, L., Sailley, S., Stephens, N., and Torres, R.: ERSEM 15.06: a generic model for marine biogeochemistry and the ecosystem dynamics of the lower trophic levels, Geosci. Model Dev. Discuss., 8, 7063-7187, doi:10.5194/gmdd-8-7063-2015, 2015.
Lessin G, Raudsepp U, Stips A (2014) Modelling the Influence of Major Baltic Inflows on Near-Bottom Conditions at the Entrance of the Gulf of Finland. PLoS ONE 9(11): e112881. doi:10.1371/journal.pone.0112881
Lessin G, Raudsepp U, Maljutenko I, Laanemets J, Passenko J et al. (2014) Model study on present and future eutrophication and nitrogen fixation in the Gulf of Finland, Baltic Sea. Journal of Marine Systems 129: 76-85, DOI: 10.1016/j.jmarsys.2013.08.006.

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