Prof David Thomas
Honorary Professor

Affiliations
Contact info
email: d.thomas@bangor.ac.uk
Web links: LinkedIn | Google Scholar | ResearchGate | Publons | Loop | Amazon Author
My main academic interests include: Antarctic, Arctic and Baltic sea ice ecology & biogeochemistry; Role of dissolved organic matter in aquatic systems and land-ocean transitions; Inorganic nutrients & phytoplankton primary production; Industrial-scale microalgal biomass production & utilisation; Seaweed & halophyte ecology & physiology; Conveying science to non-specialist audiences; Connections between science & art.
My work is international in scope (worked & lived - apart from UK - in Germany for 7 years; Finland for 2.5 years; Denmark 10 months; Israel for 6 months).
Since the award of my PhD in 1988 I have:
- Participated in 14 research-cruises of between 2 weeks and 3 months: Southern Ocean (6), Arctic (2), North Sea (5) & North East Atlantic (1). I have conducted other fieldwork in the Baltic Sea (Finland & Sweden), Red Sea (Israel & Egypt) & White Sea (Russia), The Philippines, Vietnam & Wales. I have also led teams of between 10 and 20 scientists in 4 large-scale facility ice tank experiments in Hamburg (≈30 days each).
- Article › Research › Peer-reviewed
- Published
36 year trends in dissolved organic carbon export from Finnish rivers to the Baltic Sea
Raike, A., Kortelainen, P., Mattsson, T. & Thomas, D. N., 1 Oct 2012, In: Science of the Total Environment. 435, p. 188-201Research output: Contribution to journal › Article › peer-review
- Published
Air-ice carbon pathways inferred from a sea ice tank experiment
Kotovitch, M., Moreau, S., Zhou, J., Vancoppenolle, M., Dieckmann, G. S., Evers, K-U., Van der Linden, F., Thomas, D. N., Tison, J-L. & Delille, B., 28 Jun 2016, In: Elementa: Science of the Anthropocene. 4, 15 p., 000112.Research output: Contribution to journal › Article › peer-review
- Published
Antarctic Sea ice - a habitat for extremophites
Thomas, D. N. & Dieckmann, G. S., 25 Jan 2002, In: Science. 295, 5555, p. 641-644Research output: Contribution to journal › Article › peer-review
- Published
Assessing the O2 budget under sea ice: An experimental and modelling approach
Moreau, S., Kaartokallio, H., Vancoppenolle, M., Zhou, J., Dieckmann, G. S., Kotovitch, M., Thomas, D. N., Tison, J-L. & Delille, B., 3 Dec 2015, In: Elementa: Science of the Anthropocene. 3, 000080, 80.Research output: Contribution to journal › Article › peer-review
- Published
Bacterial community dynamics and activity in relation to dissolved organic matter availability during sea-ice formation in a mesocosm experiment.
Eronen-Rasimus, E., Kaartokallio, H., Lyra, C., Autio, R., Kuosa, H., Dieckmann, G. S. & Thomas, D. N., 20 Jan 2014, In: MicrobiologyOpen. 3, 1, p. 139-156Research output: Contribution to journal › Article › peer-review
- Published
Bacterial production, abundance and cell properties in boreal estuaries: Relation to dissolved organic matter quantity and quality
Kaartokallio, H., Asmala, E., Autio, R. & Thomas, D. N., Jul 2016, In: Aquatic Sciences. 78, 3, p. 525-540Research output: Contribution to journal › Article › peer-review
- Published
Behaviour of dissolved organic matter and inorganic nutrients during experimental sea ice formation.
Giannelli, V., Thomas, D. N., Haas, C., Kattner, G., Kennedy, H. & Dieckmann, G. S., 1 Jan 2001, In: Annals of Glaciology. 33, 1, p. 317-321Research output: Contribution to journal › Article › peer-review
- Published
Bioavailability and radiocarbon age of fluvial dissolved organic matter (DOM) from a northern peatland-dominated catchment: effect of land-use change
Hulatt, C. J., Kaartokallio, H., Asmala, E., Autio, R., Stedmon, C. A., Sonninen, E., Oinonen, M. & Thomas, D. N., 1 Jul 2014, In: Aquatic Sciences. 76, 3, p. 393-404Research output: Contribution to journal › Article › peer-review
- Published
Bioavailability of riverine dissolved organic matter in three Baltic Sea estuaries and the effect of catchment land-use
Asmala, E., Kaartokallio, H., Pitkänen, L., Stedmon, C. A. & Thomas, D. N., 5 Nov 2013, In: Biogeosciences. 10, p. 6969-6986Research output: Contribution to journal › Article › peer-review
- Published
Biogenic hydrogen and methane production from Chlorella vulgaris and Dunaliella tertiolecta biomass
Lakaniemi, A-M., Hulatt, C. J., Thomas, D. N., Tuovinen, O. H. & Puhakka, J. A., 26 Sep 2011, In: Biotechnology for Biofuels. 4Research output: Contribution to journal › Article › peer-review
- Published
Biogeochemical composition of natural sea ice brines from the Weddell Sea during early austral summer.
Papadimitriou, S., Thomas, D. N., Kennedy, H., Haas, C., Kuosa, H., Krell, A. & Dieckmann, G. S., 27 Sep 2007, In: Limnology and Oceanography. 52, 5, p. 1809-1823Research output: Contribution to journal › Article › peer-review
- Published
Biogeochemical conditions and ice algal photosynthetic parameters in Weddell Sea ice during early spring.
Meiners, K. M., Papadimitriou, S., Thomas, D. N., Norman, L. & Dieckmann, G. S., 1 Jul 2009, In: Polar Biology. 32, 7, p. 1055-1065Research output: Contribution to journal › Article › peer-review
- Published
Biogeochemical functioning of grazed estuarine tidal marshes along a salinity gradient
Dausse, A., Garbutt, A., Norman, L., Papadimitriou, S., Jones, L. M., Robins, P. E. & Thomas, D. N., 20 Mar 2012, In: Estuarine, Coastal and Shelf Science. 100, p. 83-92Research output: Contribution to journal › Article › peer-review
- Published
Biogeochemical observations during the winter-spring transition in East Antarctic sea ice: evidence of iron and exopolysaccharide controls.
Van der Merwe, P., Lannuzel, D., Nichols, C. A., Meiners, K., Heil, P., Norman, L., Thomas, D. N. & Bowie, A. R., 20 Aug 2009, In: Marine Chemistry. 115, 3-4, p. 163-175Research output: Contribution to journal › Article › peer-review
- Published
Biogeochemistry of Antarctic sea ice.
Thomas, D. N. & Dieckmann, G. S., 1 Jan 2002, In: Oceanography and Marine Biology. 40, p. 143-169Research output: Contribution to journal › Article › peer-review
- Published
Biogeochemistry of platelet ice: its influence on particle flux under fast ice in the Weddell Sea, Antarctica
Thomas, D. N., Kennedy, H. A., Kattner, G., Gerdes, D., Gough, C. & Dieckmann, G. S., 1 Jul 2001, In: Polar Biology. 24, 7, p. 486-496Research output: Contribution to journal › Article › peer-review
- Published
Biomass, composition and activity of organism assemblages along a salinity gradient in sea ice subjected to river discharge in the Baltic Sea.
Kaartokallio, H., Kuosa, H., Thomas, D. N., Granskog, M. A. & Kivi, K., 1 Jan 2007, In: Polar Biology. 30, 2, p. 183-197Research output: Contribution to journal › Article › peer-review
- Published
Brief communication: ikaite (CaCO3*6H2O) discovered in Arctic sea ice
Dieckmann, G. S., Nehrke, G., Uhlig, C., Gottlicher, J., Gerland, S., Granskog, M. A. & Thomas, D. N., 28 May 2010, In: Cryosphere. 4, 2, p. 227-230Research output: Contribution to journal › Article › peer-review
- Published
Broad-scale predictability of carbohydrates and exopolymers in Antarctic and Arctic sea ice
Underwood, G. J., Aslam, S. N., Michel, C., Niemi, A., Norman, L., Meiners, K. M., Laybourn-Parry, J., Paterson, H. & Thomas, D. N., 24 Sep 2013, In: Proceedings of the National Academy of Sciences of the United States of America: PNAS. 110, 39, p. 15734-15739Research output: Contribution to journal › Article › peer-review
- Published
Buoyancy and diapause in Antarctic copepods: The role of ammonium accumulation.
Sartoris, F. J., Thomas, D. N., Cornils, A. & Schnack-Schiel, S. B., 1 Sep 2010, In: Limnology and Oceanography. 55, 5, p. 1860-1864Research output: Contribution to journal › Article › peer-review
- Published
CO2 and CH4 in sea ice from a subarctic fjord under influence of riverine input
Crabeck, O., Delille, B., Thomas, D., Geilfus, N. X., Rysgaard, S. & Tilson, J. L., 1 Dec 2014, In: Biogeosciences. 11, 23, p. 66525-6538Research output: Contribution to journal › Article › peer-review
- Published
Calcium carbonate as ikaite crystals in Antarctic ice.
Dieckmann, G. S., Nehrke, G., Papadimitriou, S., Gottlicher, J., Steininger, R., Kennedy, H., Wolf-Gladrow, D. & Thomas, D. N., 18 Apr 2008, In: Geophysical Research Letters. 35, 8, p. L08501Research output: Contribution to journal › Article › peer-review
- Published
Cattle grazing drives nitrogen and carbon cycling in a temperate salt marsh
Olsen, Y., Dausse, A., Garbutt, A., Ford, H., Thomas, D. N. & Jones, D. L., Mar 2011, In: Soil Biology and Biochemistry. 43, 3, p. 531-541Research output: Contribution to journal › Article › peer-review
- Published
Changes in the composition and bioavailability of dissolved organic matter during sea ice formation
Jorgensen, L., Stedmon, C. A., Kaartokallio, H., Middelboe, M. & Thomas, D. N., 11 Feb 2015, In: Limnology and Oceanography. 60, 3, p. 817-830Research output: Contribution to journal › Article › peer-review
- Published
Characteristics of dissolved organic matter in Baltic coastal sea ice: Allochthonous or autochthonous origins?
Stedmon, C. A., Thomas, D. N., Granskog, M., Kaartokallio, H., Papadimitriou, S. & Kuosa, H., 1 Nov 2007, In: Environmental Science and Technology. 41, 21, p. 7273-7279Research output: Contribution to journal › Article › peer-review
- Published
Chemical properties of brackish water ice in the Bothnian Bay, the Baltic Sea.
Granskog, M. A., Virkkunen, K., Thomas, D. N., Ehn, J., Kola, H. & Martma, T., 1 Jan 2004, In: Journals of Glaciology. 50, 169, p. 292-302Research output: Contribution to journal › Article › peer-review
- Published
Chlorophyll a in Antarctic sea ice from historical ice core data
Meiners, K. M., Vancoppenolle, M., Thanassekos, S., Dieckmann, G. S., Thomas, D. N., Tison, J. L., Arrigo, K. R., Garrison, D. L., McMinn, A., Lannuzel, D., van der Merwe, P., Swadling, K. M., Smith Jr., W. O., Melnikov, I. & Raymond, B., 1 Nov 2012, In: Geophysical Research Letters. 39, 21Research output: Contribution to journal › Article › peer-review
- Published
Chlorophyll-a in Antarctic landfast sea ice: a first synthesis of historical ice-core data
Meiners, K. M., Vancoppenolle, M., Carnat, C., Castellani, G., Delille, B., DeLille, D., Dieckmann, G. S., Flores, H., Fripiat, F., Grotti, M., Lange, B. A., Lannuzel, D., Martin, A., McMinn, A., Nomura, D., Peeken, I., Rivaro, P., Ryan, K. G., Stefels, J., Swadling, K. M., Thomas, D., Tison, J-L., van der Merwe, P., van Leeuwe, M. A., Weldrik, C. & Yang, E. J., 25 Nov 2018, In: Journal of Geophysical Research: Oceans. 123, 11, p. 8444-8459Research output: Contribution to journal › Article › peer-review
- Published
Controls on the processing and fate of terrestrially-derived organic carbon in aquatic ecosystems: synthesis of special issue INTRODUCTION
Evans, C. D. & Thomas, D. N., Jul 2016, In: Aquatic Sciences. 78, 3, p. 415-418Research output: Contribution to journal › Article › peer-review
- Published
Copepods in sea ice of the western Weddell Sea during austral spring 2004.
Schnack-Schiel, S. B., Haas, C., Michels, J., Mizdalski, E., Schunemann, H., Steffens, M. & Thomas, D. N., 1 Apr 2008, In: Deep Sea Research Part II: Topical Studies in Oceanography. 55, p. 1056-1067Research output: Contribution to journal › Article › peer-review
- Published
Copepods in summer platelet ice in the eastern Weddell Sea, Antarctica.
Schnack-Schiel, S. B., Dieckmann, G. S., Kattner, G. & Thomas, D. N., 1 Jul 2004, In: Polar Biology. 27, 8, p. 502-506Research output: Contribution to journal › Article › peer-review
- Published
Corrigendum to “36 year trends in dissolved organic carbon export from Finnish rivers to the Baltic Sea” [Sci. Total Environ. 435–436(2012) 188–201]
Raike, A., Kortelainen, P., Mattsson, T. & Thomas, D. N., 1 Mar 2014, In: Science of the Total Environment. 473, p. 750-750Research output: Contribution to journal › Article › peer-review
- Published
Dinoflagellates in a fast-ice covered inlet of the Riiser-Larsen ice shelf (Weddell Sea).
Pienkowski, A. J., Marret, F., Thomas, D. N., Scourse, J. D. & Dieckmann, G. S., 1 Sep 2009, In: Polar Biology. 32, 9, p. 1331-1343Research output: Contribution to journal › Article › peer-review
- Published
Dissolved carbohydrates in Antarctic sea ice
Herborg, L. M., Thomas, D. N., Kennedy, H. A., Haas, C. & Dieckmann, G. S., 1 Jun 2001, In: Antarctic Science. 13, 2, p. 119-125Research output: Contribution to journal › Article › peer-review
- Published
Dissolved extracellular polymeric substances (dEPS) dynamics and bacterial growth during sea ice formation in an ice tank study
Aslam, S. N., Underwood, G. J. C., Kaartokallio, H., Norman, L., Autio, R., Fischer, M., Kuosa, H., Dieckmann, G. S. & Thomas, D. N., May 2012, In: Polar Biology. 35, 5, p. 661-676Research output: Contribution to journal › Article › peer-review
- Published
Dissolved organic carbon in sediments from the eastern North Atlantic
Papadimitriou, S., Kennedy, H. A., Bentaleb, I. & Thomas, D. N., 1 Jul 2002, In: Marine Chemistry. 79, 1, p. 37-47Research output: Contribution to journal › Article › peer-review
- Published
Dissolved organic matter (DOM) in microalgal photobioreactors: a potential loss in solar energy conversion?
Hulatt, C. J. & Thomas, D. N., 10 Jul 2010, In: Bioresource Technology. 101, 22, p. 8690-8697Research output: Contribution to journal › Article › peer-review
- Published
Dissolved organic matter in Antarctic sea ice.
Thomas, D. N., Kattner, G., Engbrodt, R., Giannelli, V., Kennedy, H. A., Haas, C. & Dieckmann, G. S., 1 Jan 2001, In: Annals of Glaciology. 33, 1, p. 297-303Research output: Contribution to journal › Article › peer-review
- Published
Distribution and composition of dissolved extracellular polymeric substances (EPS) in Antarctic sea ice.
Underwood, G. J., Fietz, S., Papadimitriou, S., Thomas, D. N. & Dieckmann, G. S., 8 Apr 2010, In: Marine Ecology Progress Series. 404, p. 1-19Research output: Contribution to journal › Article › peer-review
- Published
Drivers of inorganic carbon dynamics in first-year sea ice: A model study
Moreau, S., Vancoppenolle, M., Delille, B., Tison, J. L., Zhou, J. Y., Kotovitch, M., Thomas, D. N., Geilfus, N. X. & Goosse, H., 29 Jan 2015, In: Journal of Geophysical Research - Oceans. 120, 1, p. 471–495Research output: Contribution to journal › Article › peer-review
- Published
Ecology of Southern Ocean pack ice.
Brierley, A. S. & Thomas, D. N., 1 Jan 2002, In: Advances in Marine Biology. 43, p. 171-276Research output: Contribution to journal › Article › peer-review
- Published
Energy demands of nitrogen supply in mass cultivation of two commercially important microalgal species, Chlorella vulgaris and Dunaliella tertiolecta
Hulatt, C. J., Lakaniemi, A-M., Puhakka, J. A. & Thomas, D., 2 Feb 2012, In: BioEnergy Research. 5, 3, p. 669-684Research output: Contribution to journal › Article › peer-review
- Published
Energy efficiency of an outdoor microalgal photobioreactor sited at mid-temperate latitude.
Hulatt, C. J. & Thomas, D. N., 1 Jun 2011, In: Bioresource Technology. 102, 12, p. 6687-6695Research output: Contribution to journal › Article › peer-review
- Published
Eukaryotic and prokaryotic microbial communities during microalgal biomass production
Lakaniemi, A-M., Hulatt, C. J., Wakeman, K. D., Thomas, D. N. & Puhakka, J. A., Nov 2012, In: Bioresource technology . 124, p. 387-393Research output: Contribution to journal › Article › peer-review
- Published
Evidence against recent climate-induced destabilisation of soil carbon from C-14 analysis of riverine dissolved organic matter
Evans, C. D., Freeman, C., Cork, L. G., Thomas, D. N., Reynolds, B., Billett, M. F., Garnett, M. H. & Norris, D., 13 Apr 2007, In: Geophysical Research Letters. 34, 7, p. L07407Research output: Contribution to journal › Article › peer-review
- Published
Experimental evidence for carbonate precipitation and CO2 degassing during sea ice formation.
Papadimitriou, S., Kennedy, H., Kattner, G., Dieckmann, G. S. & Thomas, D. N., 1 Apr 2004, In: Geochimica et Cosmochimica Acta. 68, 8, p. 1749-1761Research output: Contribution to journal › Article › peer-review
- Published
Exudation and decomposition of chromophoric dissolved organic matter (CDOM) from some temperate macroalgae.
Hulatt, C., Thomas, D. N., Bowers, D., Norman, L. & Zhang, C., 20 Aug 2009, In: Estuarine, Coastal and Shelf Science. 84, 1, p. 147-153Research output: Contribution to journal › Article › peer-review
- Published
First "in situ" determination of gas transport coefficients (D-O2, D-Ar, and D-N2) from bulk gas concentration measurements (O-2, N-2, Ar) in natural sea ice
Crabeck, O., Delille, B., Rysgaard, S., Thomas, D. N., Gelifus, N. X., Else, B. & Tilson, J. L., 7 Oct 2014, In: Journal of Geophysical Research. 119, 10, p. 6655-6668Research output: Contribution to journal › Article › peer-review
- Published
Fluorescense of dissolved organic matter in seawater at low temperatures and during ice formation.
Patsayeva, S., Reuter, R. & Thomas, D. N., 1 Jan 2004, In: EARSeL eProceedings. 3, 2, p. 227-238Research output: Contribution to journal › Article › peer-review
- Published
From Plankton to Trees
Thomas, D. N., 1 Dec 2004, In: Form Magazine. 1, p. 17-21Research output: Contribution to journal › Article › peer-review