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Eva Leu

Senior Researcher Akvaplan-nivaArctic R&D
Work address Akvaplan-niva AS CIENS Gaustadalleen 21 Olso 0349 Work Phone: +47 948 49312
Photo of Eva Leu

Biography

Research interests:

  • Climate impact on Arctic marine ecosystem productivity and structure
  • Ecophysiology and biochemistry of phytoplankton and ice algae
  • Food quality effects and trophic transfer of fatty acids
  • Light and UV radiation and primary producers.

Running national and international projects:

  • TerrACE: Effects of Terrestrial inputs on Arctic Coastal Ecosystems (2017-2021)
  • Diatom-ARCTIC: Diatom Autoecological Responses with Changes To Ice Cover (2018-2022)
  • HAVOC: Ridges – Safe HAVens for ice-associated Flora and Fauna in a Seasonally ice-covered Arctic OCean (2019-2021)
  • FAABulous: Future Arctic Algae Blooms (2015-2020)
  • Marine Night (2013-2016)
  • Arctic ABC (2015-2019)

Completed national and international projects:

  • PEACE: Pollution and ecosystem adaptation to changes in the environment (2015-2019)
  • CLEOPATRA II
  • CLEOPATRA: Climate effects on planktonic food quality and trophic transfer in Arctic marginal ice zones (2007-2009)
  • MERCLIM: Marine Ecosystems Response to a changing Climate

Curriculum Vitae: PDF

Relevant publications:

  1. Rizzuto, S., Thrane, J.E., Baho, D.L., Jones, K.C., Zhang, H., Hessen, D.O., Nizzetto, L., Leu, E. (accept) Water browning controls adaptation and associated trade-offs in phytoplankton stressed by chemical pollution. Environmental Science and Technology.
  2. Johnsen, G., Leu, E., Gradinger, R. (2020) Micro- and macroalgae during the Polar night. In: Polar Night Marine Ecology – Life and Light in the Dead of the Night, Berge, J., Johnsen, G., Cohen, J.H. (eds.) Advances in Polar Ecology
  3. Brown, T., Rad-Menéndez, C., Ray, J.L., Skaar, K.S. Thomas, N., Ruiz-Gonzalez, C., Leu, E. (2020) Influence of nutrient availability on Arctic sea ice diatom HBI synthesis. Organic Geochemistry https://doi.org/10.1016/j.orggeochem.2020.103977
  4. Kvernvik, A.C., Rokitta, S., Rost, B., Gabrielsen, T., Leu, E., Hoppe, C.J.M. (2020) Sea ice and pelagic diatoms react differently towards high light stress and ocean acidification. New Phytologist https://doi.org/10.1111/nph.16501
  5. McGovern, M., Pavlov, A., Leu, E., Søreide, J.E., Poste, A. (subm.) Physicochemical Response to Terrestrial Inputs in a River and Glacier -Influenced Arctic Fjord (Isfjorden, Svalbard) Frontiers in Marine Science
  6. Baho, D.L., Leu, E., Pomati, F.,  Hessen, D.O.,  Norberg, J., Moe, S.J., Skjelbred, B., Nizzetto, L. (2019) Resilience of natural phytoplankton communities to combined pulse-like disturbances involving micropollutants and mixing event. Environmental Chemistry and Toxicology
  7. Baho, D.L., Pomati, F., Leu, E., Hessen. D.O., Moe, J., Norberg, J., Nizzetto. L. (2019) A single pulse of diffuse contaminants alters the size distribution of natural phytoplankton communities. Science of the Total Environment
  8. Pavlov, A.P., Leu, E., Hanelt, D., Bartsch, I., Karsten, U., Hudson, S.R., Gallet, J.C., Cottier, F., Cohen, J.H., Berge, J., Johnsen, G., Maturilli, M., Kowalczuk, P., Granskog, M. (2019) Underwater light climate in Kongsfjorden and its ecological implications. In: The Ecosystem of Kongsfjorden, Hop, H. & Wiencke C. (eds.), Advances in Polar Ecology, 137-172
  9. Hegseth, E.N., Assmy, P., Wiktor, J.M., Wiktor, J.M.Jr, Kristiansen, S., Leu, E., Tverberg, V., Gabrielsen, T.M., Cottier, F. (2019) Phytoplankton seasonal dynamics in Kongsfjorden, Svalbard and the adjacent shelf. In: The Ecosystem of Kongsfjorden, Hop, H. & Wiencke C. (eds.), Advances in Polar Ecology, 173-228.
  10. Aune, M., Aniceto, A.S., Biuw, M., Daase, M., Falk-Petersen, S., Leu, E., Ottesen, C., Sagerup, K., Camus, L. (2018) Seasonal ecology in ice-covered Arctic seas – considerations for spill response decision making. Mar Environ Res
  11. Kvernvik, A.C., Hoppe, C.J.M., Lawrenz, E., Prasil, O., Wiktor, J., Greenacre, M., Leu, E. (2018) Fast reactivation of photosynthesis in Arctic phytoplankton during the Polar night. J Phycol 54(4): 461-470. https://doi.org/10.1111/jpy.12750
  12. Leu, E., Graeve, M., Wulff, A. (2016) A (too) bright future? – Arctic diatoms under radiation stress. Pol Biology 39(10): 1711-1724.
  13. Leu, E., Mundy, C.J., Campbell, K., Gabrielsen, T., Gosselin, M., Juul-Pedersen, T., Gradinger, R. (2015) Arctic spring awakening – steering principles behind the winter-spring transition in marine ecosystems. Prog Oceanogr
  14. Berge, J., Cottier, F. Darnis, G., Falk-Petersen, S., Gabrielsen, T., Johnsen, G., Last, K. ,Leu, E., Lønne, O.J., Moline, M., Nahrgang, J., Renaud, P.E., Seuthe, L., Søreide, J., Varpe, Ø., Weslawski, J.M. (in press) In the dark: paradigms of Arctic ecosystems during Polar night challenged by new understanding. Prog Oceanogr
  15. Cohen JH, Berge J, Moline MA, Sørensen AJ, Last K, Falk-Petersen S, Renaud, P.E., Leu, E. et al. (2015) Is ambient light during the high Arctic polar night sufficient to act as a visual cue for zooplankton? PLoS ONE 10 (6): e0126247. doi:10.1371/journal.pone.0126247
  16. Huntington, H.P., Carmack, E., Wassmann, P., Wiese, F., Leu, E., Gradinger, R. (2015) A new perspective on changing Arctic marine ecosystems: Panarchy adaptive cycles in pan-Arctic spatial and temporal scales, in: Sustainable Oceans in the Twenty-First Century, Arico, S. (ed.), UNU-UNESCO.
  17. Daase, M., Falk-Petersen, S., Varpe, Ø., Darnis, G., Søreide, J.E., Wold, A., Leu, E., Berge, J., Philippe, B., Fortier, L. (2013) Plasticity in timing of reproductive events in Calanus glacialis: a Pan-Arctic perspective. Can J Fish Aquat Sci 70(6): 871-884.
  18. Weydmann, A., Søreide, J.E., Kwasniewski, S., Leu, E., Falk-Petersen, S., Berge, J. (2013) Ice-related seasonality in zooplankton community composition in a high arctic fjord. J Plankt Res 35(4): 831-842
  19. Leu, E., Daase, M., Schulz, K.G., Stuhr, A., Riebesell, U. (2013) Effect of ocean acidification on the fatty acid composition of a natural plankton community. Biogeosciences 10: 1143-1153.
  20. Kwasniewski, S., Walkusz, W., Cottier, F., Leu, E. (2013) Mesozooplankton dynamics in relation to food availability during spring and early summer in a high latitude glaciated fjord (Kongsfjorden), with focus on Calanus. J Mar Sys 111-112: 83-96.
  21. Hessen, D.O., Frigstad, H., Færøvig, P.J., Wojewodzic, M.W., Leu, E. (2012) UV radiation and its effect on P-uptake in Arctic diatoms. J Exp Mar Biol Ecol 411:45-51.
  22. Wold, A., Darnis, G., Søreide, J.E., Leu, E., Philippe, B., Fortier, L., Poulin, M., Kattner, G., Graeve, M., Falk-Petersen, S. (2011) Life strategy and diet of Calanus glacialis during the winter-spring transition in Amundsen Gulf, southeastern Beaufort Sea. Polar Biol 34 (12): 1929-1946.
  23. Leu, E., Søreide, J.E., Hessen, D.O., Falk-Petersen, S., Berge, J. (2011) Consequences of changing sea ice cover for primary and secondary producers in European Arctic shelf seas: timing, quantity and quality. Prog Oceanogr 90: 18-32.
  24. Søreide, J.E, Leu, E., Berge, J., Graeve M., Falk-Petersen, S. (2010) Timing of blooms, algal food quality and Calanus glacialis reproduction and growth in a changing Arctic. Global Change Biol 16(11): 3154-3163.
  25. Leu, E., Wiktor, J., Søreide, J.E., Berge, J., Falk-Petersen, S. (2010) Increased irradiance reduces food quality of sea ice algae. Mar Ecol Prog Ser 411: 49-60
  26. Berge, J., Cottier, F., Last, K., Varpe, Ø., Leu, E., Søreide, J., Eiane, K. Falk-Petersen, S., Willis, K., Nygård, H., Vogedes, D., Griffiths, C., Johnsen, G., Lorentzen, D., Brierley, A. (2009) Diel vertical migration of Arctic zooplankton during the polar night. Biology Letters 5(1): 69-72.
  27. Hessen, D.O., Leu, E., Færøvig, P., Falk-Petersen, S. (2008) Light and spectral properties as determinants of C:N:P ratios in phytoplankton Deep Sea Res II 55: 2169-2175.
  28. Falk-Petersen, S., Leu, E., Berge, J., Kwasniewski, S., Nygård, H., Røstad, A., Keskinen, E., Thormar, J., von Quillfeldt, C., Wold, A., Gulliksen, B. (2008) Vertical migration in high Arctic waters during autumn 2004 Deep Sea Res II 55: 2275-2284.
  29. Leu, E., Falk-Petersen S., Hessen, D.O. (2007) Ultraviolet radiation negatively affects growth but not food quality of Arctic diatoms. Limnol Oceanogr 52(2): 787-797.
  30. Wold, A., Leu, E., Walkusz, W., Falk-Petersen, S. (2007) Lipids in copepodite stages of Calanus glacialis. Polar Biol 30: 655-658.
  31. Leu, E., Wängberg, S.Å., Wulff, A., Ørbæk, J.B., Falk-Petersen, S., Hessen, D.O. (2006) Effects of changes in ambient PAR and UV radiation on the nutritional quality of an Arctic diatom (Thalassiosira antarctica var. borealis). J Exp Mar Biol Ecol 337: 65-81.
  32. Leu, E., Falk-Petersen S., Kwasniewski S., Wulff A., Edvardsen K., Hessen D.O. (2006) Fatty acid dynamics during the spring bloom in a high Arctic fjord: importance of abiotic factors vs. community changes. Can J Fish Aquat Sci. 63: 2660-2779.
  33. Leu, E., Færøvig, P., Hessen, D.O. (2006) UV effects on the nutritional quality of Selenastrum capricornutum and their consequences for Daphnia magna. Freshw Biol 51: 2296-2308.
  34. Hessen, D.O., Leu, E. (2006) Trophic transfer and trophic modification of fatty acids in arctic lakes. Freshw Biol. 51: 1987-1998.
  35. Leu, E., Krieger-Liszkay, A., Goussias, C. & Gross, E. (2002) Polyphenolic allelochemicals from the aquatic angiosperm Myriophyllum spicatum L. inhibit photosystem II. Plant Physiol 130(4): 2011-2018.