Gina Clarke is a freshwater ecologist who specialises in phytoplankton monitoring and in the biological analysis of lake sediments. She has specific expertise in diatom, chironomid head capsule and plant macrofossil taxonomy and is interested in how lake ecosystems change on different time-scales. Most of her work focusses on sites in the UK but she has also worked on lakes in Alaska and Norway.

Current Position

Research Consultant (Ensis Ltd) & Research Associate (UCL)

Selected Publications

Sayer, C., Bennion, H., Davidson, T., Burgess, A., Clarke, G., Hoare, D., Frings, P., & Hatton-Ellis T., (2012) The application of palaeolimnology to evidence-based lakemanagement and conservation: examples from UK lakes. Aquatic Conservation: Marine and Freshwater Ecosystems 22, 165–180

Hobæk A, Løvik J. E., Rohrlack T., Moe S. J., Grung M., Bennion H., Clarke, G., & Piliposyan G. T., (2012) Eutrophication, recovery, and temperature in Lake Mjøsa: Detecting trends with monitoring data and sediment records. Freshwater Biology 57 1998–2014.

Clegg B. F., Kelly R., Clarke, G.H., Walker I.R. & Hu, F.S. (2011) Nonlinear response of summer temperature to Holocene insolation forcing in Alaska, Proceedings of the National Academy of Science 108(48), 19299–19304

Davidson T.A., Bennion H., Sayer C.D., Jeppesen E., Clarke, G.H., Morley D., Odgaard B., Rasmussen P., Rawcliffe R., Salgado J., Simpson, G.L. & Amsinck S.L., (2011) The role of cladocerans in tracking long-term change in shallow lake ecosystem structure and function. Hydrobiologia 676(1), 279–315

Bennion, H., Simpson, G.L., Anderson, N.J., Clarke, G., Dong, X., Hobæk, A., Guilizzoni, P., Marchetto, A., Sayer, C.D., Thies, H. & Tolotti, M. (2011) Defining ecological and chemical reference conditions and restoration targets for nine European lakes. Journal of Paleolimnology 45, 415–431.

Clegg, B.F., Clarke, G.H., Chipman, M.L., Chou, M., Walker, I.R., Tinner, W. & Hu, F.S. (2010). Six millennia of summer temperature variation based on midge analysis of lake sediments from Alaska. Quaternary Science Reviews 29, 3308–3316.

Chipman M.L. Clarke, G.H., Clegg B.F., Gregory-Eaves I. & Hu, F.S. (2009) A 2000 year record of climatic change at Ongoke Lake, southwest Alaska. Journal of Paleolimnology 41, 57–75.

Kernan, M., Ventura, M., Bitusik, P., Brancelj, A., Clarke, G., Velle, G., Raddum, G., Stuchlík, E. & Catalan, J. (2009) Regionalisation of remote European mountain lake ecosystems according to their biota: environmental vs. geographical patterns. Freshwater Biology 54, 2470–2493.

Kernan, M., Brancelj, A., Clarke, G., Lami, A., Raddum, G., Straškrábová, V., Stuchlík, E., Velle, G., & Ventura, M. (2009): Environmental and biological characteristics of high altitude lochs in Scotland. Fundamental and Applied Limnology, Advances in Limnology 62, 379–417.

Curtis, C.J., Juggins, S., Clarke, G., Battarbee, R.W., Kernan, M., Catalan, J., Thompson, R. & Posch M (2009) Regional influence of acid deposition and climate change in European mountain lakes assessed using diatom transfer function. Freshwater Biology 54, 2555–2572.

King, L., Clarke, G., Bennion, H., Kelly, M. & Yallop, M. (2006) Recommendations for sampling littoral diatoms in lakes for ecological status assessments. Journal of Applied Phycology 18(1), 15–25.

Hu, F.S., Nelson, D.M., Clarke, G.H., Rühland, K.M., Huang, Y., Kaufman, D.S. & Smol, J.P. (2006) Abrupt climatic events during the last glacial-interglacial transition in Alaska. Geophysical Research Letters 33, L18708.

Clarke, G., Kernan, M., Marchetto, A., Sorvari, S. & Catalan, J. (2005) Using diatoms to assess geographical patterns of biological and limnological change in high-altitude European lakes from pre-industrial times to the present day. Aquatic Sciences 67 224–236.

King, L., Clarke, G., Bennion, H., Kelly, M., & Yallop, M. (2005) Sampling littoral diatoms in lakes for ecological status assessments: a literature review. Environment Agency ISBN: 1844324362. Environment Agency.