People > Dr Gennadi Lessin

Dr Gennadi Lessin

Marine System Modeller

Contact Details


Gennadi Lessin’s main area of expertise is modelling benthic processes and benthic-pelagic interactions using ERSEM. He is working on developing and refining formulations of biogeochemical and biological processes with an aim to increase understanding of ecosystem functioning and dynamics under changing conditions. One of his major areas of interest is modelling response of benthic environment to low pH in the context of ocean acidification and impacts of potential leakage from CCS sites.

He is also interested in modelling dynamics of climatically-active gases, with a specific focus on sinks and sources of methane in shelf seas.

Prior to joining PML in 2013, Gennadi worked at the Marine Systems Institute at Tallinn University of Technology (Estonia), implementing coupled hydrodynamic-ecosystem models to study eutrophication processes in the Baltic Sea. In 2010-2012 he was a Seconded National Expert at European Commission, Joint Research Centre (Ispra, Italy).



Pathways and emissions of climate-relevant trace gases in a changing Arctic Ocean (PETRA)

Contact: Dr Andy Rees

The Arctic Ocean is a rapidly changing environment, with rising temperatures leading to an ongoing decline in sea ice and shifting conditions for...

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Recent publications

  • Lessin, G; Bruggeman, J; McNeill, CL; Widdicombe, S. 2019 Time scales of benthic macrofaunal response to pelagic production differ between major feeding groups. Frontiers in Marine Science, 6, supplement 15, pp.
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  • Lessin, G; Artioli, Y; Almroth-Rosell, E; Blackford, JC; Dale, A; Glud, R; Middelburg, JJ; Pastres, R; Queiros, AM; Rabouille, C; Regnier, P; Soetaert, K; Solidoro, C; Stephens, N; Yakushev, E. 2018 Modelling marine sediment biogeochemistry: current knowledge gaps, challenges and some methodological advice for advancement. Frontiers in Marine Science.
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  • Aldridge, JN; Lessin, G; Amoudry, LO; Hicks, N; Hull, T; Klar, JK; Kitidis, V; McNeill, CL; Ingels, J; Parker, ER; Silburn, B; Silva, T; Sivyer, DB; Smith, HEK; Widdicombe, S; Woodward, EMS; Van der Molen, J; Garcia, L; Kröger, S. 2017 Comparing benthic biogeochemistry at a sandy and a muddy site in the Celtic Sea using a model and observations [in special issue: Biogeochemistry, macronutrient and carbon cycling in the shelf sea benthos] Biogeochemistry, 135 (1-2). 155-182.
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  • Lessin, G; Artioli, Y; Queiros, AM; Widdicombe, S; Blackford, JC. 2016 Modelling impacts and recovery in benthic communities exposed to localised high CO2. Marine Pollution Bulletin, 109 (1). 267-280.
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  • Butenschon, M; Clark, JR; Aldridge, JN; Allen, JI; Artioli, Y; Blackford, JC; Bruggeman, J; Cazenave, P; Ciavatta, S; Kay, S; Lessin, G; van Leeuwen, S; Van der Molen, J; de Mora, L; Polimene, L; Sailley, SF; Stephens, N; Torres, R. 2016 ERSEM 15.06: a generic model for marine biogeochemistry and the ecosystem dynamics of the lower trophic levels. Geoscientific Model Development, 9 (4). 1293-1339.
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  • Artioli, Y; Lessin, G; Blackford, JC; Middelburg, JJ; Pastres, R; Soetaert, K; Solidoro, C; Stephens, N; Almroth-Rosell, E; Dale, A; Glud, R; Queiros, AM; Rabouille, C; Regnier, P; Yakushev, E. 2016 A multi-disciplinary consortium approach for advancement of conceptual frameworks, modelling and experimental approaches to benthic-pelagic coupling. [Poster] In: EuroMarine 2016 General Assembly.
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Selected key publications

  • 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.
  • Lessin, G., & Raudsepp, U. (2007). Modelling the spatial distribution of phytoplankton and inorganic nitrogen in Narva Bay, southeastern Gulf of Finland, in the biologically active period. Ecological Modelling, 201(3), 348-358.
  • Lessin, G., & Raudsepp, U. (2006). Water quality assessment using integrated modeling and monitoring in Narva Bay, Gulf of Finland. Environmental Modeling and Assessment, 11(4), 315-332.