Members

Here you can find a list of all ARCTOS members and PhD students. In the drop-down menu you can either select the member status or the institution the member belongs to.

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Photo of Arunima Sen

Arunima Sen

Associate Professor

Research interests:
  • Chemosynthesis based ecosystem (cold seeps and hydrothermal vents) communities
  • Imagery and seafloor mapping
  • Spatial and temporal trends in communities
  • Links and interactions between chemosynthesis based systems and ‘background’ benthos.
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UNIS – The University Centre in SvalbardArctic Biology Work address UNIS – The University Centre in Svalbard Post box 156 Longyearbyen 9171 Norway Work Phone: +47 79 02 33 00

Research interests:

  • Chemosynthesis based ecosystem (cold seeps and hydrothermal vents) communities
  • Imagery and seafloor mapping
  • Spatial and temporal trends in communities
  • Links and interactions between chemosynthesis based systems and ‘background’ benthos.

Running projects:

  • CAGE centre of excellence

Relevant scientific publications:

  1. Sen, A., B. Dennielou, L. Droz, C. Decker, A. Arnaubec, C. Rabouille and K. Olu. Fauna and habitat types in the turbidity current driven Congo deep-sea fan lobes. In review, Deep Sea Biology II Topics in Oceanography
  2. Sen A., J. Miller, K. J. Hovey, S. Kim, S. Hourdez, G. W. Luther III and C.R. Fisher. Peripheral communities of the Eastern Lau Spreading Center and Valu Fa Ridge: community composition, temporal change and comparison to near-vent communities. 2016. Marine Ecology 37(3): 599-617
  3. Sen A., A. Gaillot, H. Ondréas, Y. Marcon, J. M. Augustin and K. Olu. The use of multibeam bathymetry and backscatter as a means of identifying faunal assemblages in a deep-sea cold seep. Deep Sea Research I 110: 33-49
  4. Sen A., L. Becker, E.A. Shearer, A. Gartman, M. Yücel, A.S. Madison, S. Hourdez, G.W. Luther III and C.R. Fisher. Community succession in hydrothermal vent habitats of the Eastern Lau Spreading Center and Valu Fa Ridge, Tonga. 2014. Limnology and Oceanography 59(5): 1510-1528
  5. Sen, A., L. Becker, E.L. Podowski, L.N. Wickes, S. Ma, K.M. Mullaugh, S. Hourdez, G.W. Luther III and C.R. Fisher. 2013. Distribution of mega fauna on sulfide edifices on the Eastern Lau Spreading Center and Valu Fa Ridge. Deep Sea Research I 72: 48-60

Popular science and outreach:

  • Facts from the Field, Blogs, 2016: What are negative crystals?; What are hydrothermal vents?
  • Schmidt Ocean Institute, Blog, 2016: Too hot to handle
Photo of Lena Seuthe

Lena Seuthe

Scientific Advisory for the Nansen Legacy project

Relevant scientific publications:
  1. Michel C, Hamilton J, Hansen E, Barber D, Reigstad M, Iacozza J, Seuthe L (2015) A review and perspectives on Arctic Ocean outflow shelves in the changing Arctic.
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UiT The Arctic University of NorwayArctic and Marine Biology Work address Department of Arctic and Marine Biology Faculty of Biosciences, Fisheries and Economics UiT The Arctic University of Norway Tromsø 9037 Norway Work Phone: +47 77 64 69 93 Website: UiT employee profile

Relevant scientific publications:

  1. Michel C, Hamilton J, Hansen E, Barber D, Reigstad M, Iacozza J, Seuthe L (2015) A review and perspectives on Arctic Ocean outflow shelves in the changing Arctic. Progr Oceanogr
  2. Berge J, Renaud PE, Darnis G, Cottier F, Last K, Gabrielsen TM, Johnsen G, Seuthe L, Weslawski JM, Leu E, Moline M, Nahrgang J, Søreide JM, Varpe Ø, Lønnen OJ, Daase M, Falk-Petersen S (2015) In the dark: paradigms of Arctic ecosystems during polar night challenged by new understanding. Progr Oceanogr
  3. Morata N & Seuthe L (2014). Importance of bacteria and protozooplankton for faecal pellet degradation. Oceanologia 56: 565 – 581. doi: 10.5697/oc.56-3.565
  4. Svensen C, Wexels Riser C, Reigstad M, Seuthe L (2012) Degradation of copepod faecal pellets in the upper layer: role of microbial community and Calanus finmarchicus. Mar Ecol Prog Ser 462: 39-49. doi: 10.3354/meps09808
  5. Svensen C, Seuthe L, Vasilyeva Y, Pasternak A, Hansen E (2011) Zooplankton distribution across Fram Strait in autumn: Are small copepods and protozooplankton important? Progr Oceanogr 91: 534-544. doi: 10.1016/j.pocean.2011.08.001
  6. Seuthe L, Töpper B, Reigstad M, Thyrhaug R, Vaquer-Sunyer R (2011) Microbial communities and processes in ice-covered Arctic waters of the northwestern Fram Strait (75 to 80oN) during the vernal pre-bloom phase. Aquat Microb Ecol 64: 253-266. doi: 10.3354/Ame01525
  7. Rokkan Iversen K and Seuthe L (2011) Seasonal microbial processes in a high-latitude fjord (Kongsfjorden, Svalbard): I. Heterotrophic bacteria, picoplankton and nanoflagellates. Polar Biol 34: 731-749. doi: 10.1007/s00300-010-0929-2
  8. Seuthe L, Rokkan Iversen K, Narcy F (2011) Microbial processes in a high-latitude fjord (Kongsfjorden, Svalbard): II. Ciliates and dinoflagellates. Polar Biol 34: 751-766. doi: 10.1007/s00300-010-0930-9
  9. Mauritzen C, Hansen E, Andersson M, Berx B, Beszczynska-Möller A, Burud I, Christensen KH, Debernard J, de Steur L, Dodd P, Gerland S, Godøy Ø, Hansen B, Hudson S, Høydalsvik F, Ingvaldsen R, Isachsen PE, Kasajima Y, Koszalka I, Kovacs KM, Køltzow M, LaCasce J, Lee CM, Lavergne T, Lydersen C, Nicolaus M, Nilsen F, Nøst OA, Orvik KA, Reigstad M, Schyberg H, Seuthe L, Skagseth Ø, Skarðhamar J, Skogseth R, Sperrevik A, Svensen C, Søiland H, Teigen SH, Tverberg V, Wexels Riser C (2011) Closing the loop – Approaches to monitoring the state of the Arctic Mediterranean during the International Polar Year 2007–2008. Progr Oceanogr 90: 62-89. doi:10.1016/j.pocean.2011.02.010
  10. Wexels Riser C, Wassmann P, Reigstad M, Seuthe L (2008) Vertical flux regulation by zooplankton in the northern Barents Sea during Arctic spring. Deep-Sea Res II 55: 2320-2329. doi: 10.1016/j.dsr2.2008.05.006
  11. Juul-Pedersen T, Michel C, Gosselin M, Seuthe L (2008) Seasonal changes in the sinking export of particulate material, under first-year sea ice on the Mackenzie Shelf (western Canadian Arctic). Mar Ecol Prog Ser 353: 13-25. doi: 10.3354/meps07165
  12. Seuthe L, Darnis G, Wexels Riser C, Wassmann P, Fortier L (2007) Winter-spring feeding and metabolism by Arctic copepods: insights from faecal pellet production and respiration measurements in the southeastern Beaufort Sea. Polar Biol 30: 427-436. doi: 10.1007/s00300-006-0199-1
  13. Arndt CE, Fernandez-Leborans G, Seuthe L, Berge J, Gulliksen B (2005) Ciliated epibionts on the Arctic sympagic amphipod Gammarus wilkitzkii as indicators for sympago-benthic coupling. Marine Biol 147 (3): 643-652. doi:10.1007/s00227-005-1599-4

Popular science and outreach:

  • Interviewed scientist in NRK program “Schrødingers katt”
  • Visiting high school pupils at UiT, talk “Isfritt Arktis – et blomstrende hav?”
  • Visiting Solstua barnehagen “Klypedyr – fra hoppekreps til kongekrabbe” – living and dead animals to touch and dissect
  • Popular science article “The planktonic food web in arctic seas: from simplicity to complexity” by Seuthe L, Rokkan Iversen K, Narcy F, in Fram Forum 2012
  • Visiting Solstua barnehagen “Hvem lever i havet” – living benthic and pelagic animals to touch and observe
  • European Researchers Night at Polaria, talk: ‘Hvordan er det å være forsker?’ for high school pupils
  • Tromsø Skipperforenning, talk: ‘Marin forskning i Tromsø: Hva forsakes det på og hvorfor trenge vi den type forskning?’
  • German school class visiting UiT, talk and lab: ‘Das marine Nahrungsnetz in der Arktis und moegliche Folgen des Klimawandels’
  • Open Ship KV Svalbard: dissipation of own research within the project iAOOS – Closing the loop
  • Book Chapter “The pelagic food web: Structure, function and contaminants” by Deibel D, Fortier L, Stern G, Loseto L, Darnis G, Benoit D, Connely T, Lafrance P, Seuthe L, Simard Y, Trela P, in “On thin ice: A synthesis of the Canadian Arctic Shelf Exchange Study (CASES)” eds. Fortier L, Barber D, Michaud J. Aboriginal Issues Press 2008

 

Photo of Marc Jürgen Silberberger

Marc Jürgen Silberberger

Post-doctoral researcher

Research interests:
  • Benthic ecology and ecosystem functioning
  • Spatial and temporal scales of ecosystem functioning
  • Benthic-pelagic coupling
  • Meroplankton ecology
  • Marine food webs.
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Polish Academy of SciencesInstitute of Oceanology Work address Department of Marine Ecology Institute of Oceanology Polish Academy of Sciences Sopot 81712 Poland Website: Google Scholar Website: ResearchGate

Research interests:

  • Benthic ecology and ecosystem functioning
  • Spatial and temporal scales of ecosystem functioning
  • Benthic-pelagic coupling
  • Meroplankton ecology
  • Marine food webs.

Project participation:

  • 2020-2023; Climate change impacts on structure and functioning of benthic communities at the fjord-shelf boundary hotspots (CLIMB) – Polish National Science Centre: 2019/35/D/NZ8/01282; Project PI
  • 2018-2022; Coastal Ecosystem functioning under different anthropogenic pressure – linking Benthic communities And biogeochemical Cycling in the southern Baltic Sea (COmEBACk) – Polish National Science Centre; project number: 2017/26/E/NZ8/00496; co-investigator (post-doc)
  • 2013-2017; ARCTOS LoVe MarinEco – Statoil; contract number: 450261853; co-investigator (PhD project)

Popular science and outreach:

Photo of Anna Silyakova

Anna Silyakova

Researcher

Research interests:
  • Biogeochemistry of methane and carbon dioxide in the Arctic Ocean:
  • sources, transport and effects on climate and marine ecosystem
  • carbon pathways in the Arctic Ocean
  • ocean-sea ice-atmosphere interaction
  • continental shelf oceanography
  • sea ice biogeochemistry and microbiology
  • cycling of dissolved organic matter in the ocean
Scientific publications:
  1. - Sert, M.
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UiT The Arctic University of NorwayDepartment of Geology Work address CAGE – Centre for Arctic Gas hydrate, Environment and Climate Department of Geology UiT The Arctic University of Norway Tromsø 9037 Norway Work Phone: +47 77 64 45 69 Website: ResearchGate Website: Personal Website Website: Google Scholar

Research interests:

  • Biogeochemistry of methane and carbon dioxide in the Arctic Ocean:
  • sources, transport and effects on climate and marine ecosystem
  • carbon pathways in the Arctic Ocean
  • ocean-sea ice-atmosphere interaction
  • continental shelf oceanography
  • sea ice biogeochemistry and microbiology
  • cycling of dissolved organic matter in the ocean

Scientific publications:

  1. – Sert, M. F., D’Andrilli, J., Gründger, F., Niemann, H., Granskog, M. A., Pavlov, A. K., … & Silyakova, A. (2020). Compositional Differences in Dissolved Organic Matter Between Arctic Cold Seeps Versus Non-Seep Sites at the Svalbard Continental Margin and the Barents Sea. Front. Earth Sci, 8, 552731.
  2. Silyakova, A., Jansson P., Serov P., Ferré B., Pavlov A. K., Hattermann T., Graves C. A., Platt S. M., Lund Myhre C., GründgerF. and Niemann H. (2020) Physical controls of dynamics of methane venting from a shallow seep area west of Svalbard. Continental Shelf Research 194 (2020): 104030.
  3. Jansson, P., Triest, J., Grilli, R., Ferré, B., Silyakova, A., Mienert, J., and Chappellaz, J. (2019). High-resolution underwater laser spectrometer sensing provides new insights into methane distribution at an Arctic seepage site, Ocean Sci., 15, 1055–1069.
  4. Jansson, P., Ferré, B., Silyakova, A., Dølven, K. O., & Omstedt, A. (2019). A new numerical model for understanding free and dissolved gas progression toward the atmosphere in aquatic methane seepage systems. Limnology and Oceanography: Methods, 17(3), 223-239.
  5. Platt, S. M., Eckhardt, S., Ferré, B., Fisher, R. E., Hermansen, O., Jansson, P., Lowry, D., Nisbet, E. G., Pisso, I., Schmidbauer, N., Silyakova, A., Stohl, A., Svendby, T. M., Vadakkepuliyambatta, S., Mienert, J., and Lund Myhre, C. (2018). Methane at Svalbard and over the European Arctic Ocean. Atmospheric Chemistry and Physics, 18(23), 17207-17224.
  6. Nomura, D., Granskog, M. A., Fransson, A., Chierici, M., Silyakova, A., Ohshima, K., Cohen, L., Delille, B., Hudson, S. R., Dieckmann, G. (2018). CO2 flux over young and snow-covered Arctic pack ice in winter and spring. Biogeosciences, 15(11), 3331-3343.
  7. Åström, E. K. L., Carroll, M. L., Ambrose, W. G., Sen, A., Silyakova, A. and Carroll, J. (2017), Methane cold seeps as biological oases in the high-Arctic deep sea. Limnology and Oceanography, 63(S1), S209-S231.
  8. Wallhead, P. J., Bellerby, R. G. J., Silyakova, A., Slagstad, D., & Polukhin, A. A. (2017). Bottom Water Acidification and Warming on the Western Eurasian Arctic Shelves: Dynamical Downscaling Projections. Journal of Geophysical Research: Oceans, 122(10), 8126-8144.
  9. Serov, P., Vadakkepuliyambatta, S., Mienert, J., Patton, H., Portnov, A., Silyakova, A., Panieri, G., Carroll, M.L., Carroll, J., Andreassen, K., and Hubbard, A. (2017). Postglacial response of Arctic Ocean gas hydrates to climatic amelioration, Proceedings of the National Academy of Sciences, 114(24), 6215-6220.
  10. Pohlman, J.W., Greinert, J., Ruppel, C., Silyakova, A., Vielstädte, L., Casso, M., Mienert, J. and Bünz, S., (2017). Enhanced CO2 uptake at a shallow Arctic Ocean seep field overwhelms the positive warming potential of emitted methane. PNAS, p.201618926.
  11. Myhre, C.L., Ferré, B., Platt, S.M., Silyakova, A., Hermansen, O., Allen, G., Pisso, I., Schmidbauer, N., Stohl, A., Pitt, J. and Jansson, P., (2016). Extensive release of methane from Arctic seabed west of Svalbard during summer 2014 does not influence the atmosphere. Geophysical Research Letters, 43(9), pp.4624-4631.
  12. Parmentier, F.J.W.; Silyakova, A.; Biastoch, A.; Kretschmer, K.; Panieri, G. AMAP Assessment: Methane as an Arctic climate forcer. Natural marine methane sources in the Arctic (Chp. 4, p. 37-48). (2015) ISBN 978-82-7971-091-2.
  13. Findlay, H. S.; Gibson, G.; Kedra, M.; Morata, N.; Orchowska, M.; Pavlov, A. K.; Reigstad, M.; Silyakova, A.; Tremblay, J-E.; Walczowski, W.; Weydmann, A.; Logvinova, C. (2015): Responses in Arctic marine carbon cycle processes: conceptual scenarios and implications for ecosystem function. Polar Research, 34(1), 24252.
  14. Pavlov, A. K.; Silyakova, A.; Granskog, M. A.; Bellerby, R.; Engel, A.; Schulz, K. G.; Brussaard, C. P. D. (2014) Marine CDOM accumulation during a coastal Arctic mesocosm experiment: No response to elevated pCO2 levels. Journal of Geophysical Research: Biogeosciences, 119(6), 1216-1230
  15. Silyakova, A., Bellerby, R. G. J., Schulz, K. G., Czerny, J., Tanaka, T., Nondal, G., Riebesell, U., Engel, A., De Lange, T., and Ludwig, A. (2013): Pelagic community production and carbon-nutrient stoichiometry under variable ocean acidification in an Arctic fjord, Biogeosciences, 10, 4847-4859.
  16. Silyakova, A. (2013). Arctic Ocean carbon biogeochemistry under climate change and ocean acidification (Doctoral dissertation, The University of Bergen).
  17. Frigstad, H., Andersen, T., Bellerby, R. G., Silyakova, A., & Hessen, D. O. (2013). Variation in the seston C: N ratio of the Arctic Ocean and pan-Arctic shelves. Journal of Marine Systems, 129, 214-223.
  18. Czerny, J., Schulz, K.G., Boxhammer, T., Bellerby, R.G.J., Büdenbender, J., Engel, A., Krug, S.A., Ludwig, A., Nachtigall, K., Nondal, G., Niehoff, B., Silyakova, A., Riebesell, U., (2013) Implications of elevated CO2 on pelagic carbon fluxes in an Arctic mesocosm study – an elemental mass balance approach. Biogeosciences 10, 3109-3125.
  19. Tanaka, T., Alliouane, S., Bellerby, R. G. B., Czerny, J., de Kluijver, A., Riebesell, U., Schulz, K. G., Silyakova, A., and Gattuso, J.-P. (2013): Effect of increased pCO2 on the planktonic metabolic balance during a mesocosm experiment in an Arctic fjord, Biogeosciences, 10, 315-325.
  20. Schulz, K. G., Bellerby, R. G. J., Brussaard, C. P. D., Büdenbender, J., Czerny, J., Engel, A., Fischer, M., Koch-Klavsen, S., Krug, S. A., Lischka, S., Ludwig, A., Meyerhöfer, M., Nondal, G., Silyakova, A., Stuhr, A., and Riebesell, U. (2013): Temporal biomass dynamics of an Arctic plankton bloom in response to increasing levels of atmospheric carbon dioxide, Biogeosciences, 10, 161-180.
  21. Ray, J.L., Topper, B., An, S., Silyakova, A., Spindelbock, J., Thyrhaug, R., Dubow, M.S., Thingstad, T.F., Sandaa, R.A. (2012) Effect of increased pCO2 on bacterial assemblage shifts in response to glucose addition in Fram Strait seawater mesocosms. FEMS Microbiol Ecol 82, 713-723.
Photo of Jofried Skardhamar

Jofried Skardhamar

Researcher

Research interests:
  • Physical oceanography
  • Coasts and fjords (Norway, Svalbard, Barents Sea)
  • Numerical modeling
  • Coupling between oceanography and biology (plankton, benthos, salmonids, seabirds)
Running national and international projects:
  • Nordlus: Spatiotemporal distribution of salmon lice in Northern Norwegian fjords, managed by IMR.
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Institute of Marine ResearchOceanography and Climate Work address Institute of Marine Research Tromsø Devision Postbox 6404 Tromsø 9294 Norway Work Phone: +47 92 61 98 04

Research interests:

  • Physical oceanography
  • Coasts and fjords (Norway, Svalbard, Barents Sea)
  • Numerical modeling
  • Coupling between oceanography and biology (plankton, benthos, salmonids, seabirds)

Running national and international projects:

  • Nordlus: Spatiotemporal distribution of salmon lice in Northern Norwegian fjords, managed by IMR. Funded by NFR through RFFNORD 2015-2018
  • RegLice: Regional lice assessment – towards a model based management system, managed by IMR. Funded by NFR 2015-2018
  • ModOIE: Mesoscale modeling of Ice, Ocean and Ecology of the Arctic Ocean, managed by Akvaplan-niva. Funded by Fram centre 2012-2016
  • KongHiro: Effects of oceanic inflow and glacial runoff on fjord circulation in Kongsfjorden, Svalbard; establishment of a high resolution ocean circulation model system. Managed by NPI, funded by Fram Centre 2014-2016
  • TIGRIF: TIdewater Glacier Retreat Impact on Fjord circulation and ecosystems. Managed by NPI. Funded by NFR 2015-2018

Relevant scientific publications:

  1. Sandvik H, RT Barrett, KE Erikstad, MS Myksvoll, F Vikebø, NG. Yoccoz, T Anker‑Nilssen, SH Lorentsen, TK Reiertsen, J Skarðhamar, M Skern-Mauritzen, GH Systad 2016: Modelled drift patterns of fish larvae link coastal morphology to seabird colony distribution. Nature Communications 7:11599. doi:10.1038/ncomms11599
  2. Skarðhamar J, Ø Skagseth, J Albretsen: Diurnal tides on the Barents Sea continental slope 2015. Deep Sea Research 97, 40–51. doi:10.1016/j.dsr.2014.11.008
  3. Bøe R, J Skarðhamar, L Rise, MFJ Dolan, VK Bellec, M Winsborrow, Ø Skagseth, J Knies, EL King, O Walderhaug, S Chand, S Buenz, J Mienert 2015: Sandwaves and sand transport on the Barents Sea continental slope offshore northern Norway. Marine and Petroleum Geology 60, 34-53.
  4. King EL, R Bøe, VK Bellec, L Rise, J Skarðhamar, B Ferré, M Dolan 2014: Contour current driven continental slope-situated sandwaves with effects from secondary current processes on the Barents Sea margin offshore Norway. Marine Geology 353, 108-127.
  5. Davidsen J, AH Rikardsen, EB Thorstad, E Halttunen, H Mitamura, K Præbel, J Skarðhamar, TF Næsje 2013: Homing behaviour of Atlantic salmon (Salmo salar) during final phase of marine migration and river entry. Canadian Journal of Fisheries and Aquatic Sciences 70, 794-802. dx.doi.org/10.1139/cjfas-2012-0352.
  6. Myksvoll M, AD Sandvik, J Skarðhamar, S Sundby 2012: Importance of high resolution wind forcing on simulation of dispersion and eddy activity in a Norwegian fjord. Estuarine, Coastal and Shelf Science 113, 293-304. dx.doi.org/10.1016/j.ecss.2012.08.019.
  7. Weslawski JM, M Kedra, J  Przytarska, L Kotwici, I Ellingsen, J Skardhamar, P Renaud, I Goszczko 2012: A huge biocatalytic filter in the centre of the Barents Sea shelf? Oceanologia 54 (2), 325-335. dx.doi.org/10.5697/oc.54-2.325.
  8. Skarðhamar J, M Reigstad, J Carroll, K Eiane, C Wexels Riser, D Slagstad 2011: Effects of mortality changes on biomass and production in Calanus spp. populations. Aquatic Biology 12: 129-145. Dx.doi.org/10.3354/ab00321.
  9. Mauritzen C, E Hansen, M Andersson, B Berx, A Beszczynska-Möller, I Burud, K Christensen, G Dalsbø, J Debernard, L DeSteur, P Dodd, S Gerland, Ø Godøy, B Hansen, S Hudson, F Høydalsvik, R Ingvaldsen, PE Isachsen, Y Kasajima, I Koszalka, KM Kovacs, M Køltzow, J LaCasce, CM Lee, T Lavergne, C Lydersen, M Nicolaus, F Nilsen, OA Nøst, KA Orvik, M Reigstad, H Schyberg, L Seuthe, Ø Skagseth, J Skarðhamar, R Skogseth, A Sperrevik, C Svensen, H Søiland, SH Teigen, V Tverberg, C Wexels Riser 2011: Closing the Loop – Approaches to monitoring the state of the Arctic Mediterranean during the International Polar Year 2007-2008. Prog. Oceanography 90: 62-89. dx.oi.org/10.1016/j.pocean.2011.02.010.
  10. Chittenden CM, AH Rikardsen, OT Skilbrei, JG Davidsen, E Halttunen, J Skarðhamar, RS McKinley 2011. An effective method for the recapture of escaped farmed salmon. Aquaculture Environment Interactions 1:215-224. dx.oi.org/10.3354/aei00021.
  11. Skarðhamar J, H Svendsen 2010: Short-term hydrographic variability in a stratified Arctic fjord. In: Howe, J.A., W.E.N. Austen, M. Forwick & M. Paetzel (eds.) Fjord Systems and Archives. Geological Society, London, Special Publications 344, 51-60. dx.oi.org/10.1144/SP344.5.
  12. Cottier FR, F Nilsen, R Skogseth, V Tverberg, J Skarðhamar, H Svendsen 2010: Arctic fjords: a review of the oceanographic environment and dominant physical processes. In: Howe, J.A., W.E.N. Austen, M. Forwick & M. Paetzel (eds.) Fjord Systems and Archives. Geological Society, London, Special Publications 344, 35-50. dx.oi.org/10.1144/SP344.4.
  13. Davidsen JG, AH Rikardsen, E Halttunen, EB Thorstad, F Økland, BH Letcher, J Skarðhamar,  TF Næsje 2009: Migratory behaviour and survival rates of wild northern Atlantic salmon (Salmo salar L.) postsmolts: effects of environmental factors. Journal of Fish Biology 75, 1700-1718.
  14. Ambrose WG, PE Renaud, S Cochrane, SG Denisenko, J Skarðhamar 2009: Polychaete diversity on two Arctic shelves: impacts of ice and primary productivity. Zoosymposia 2, 457. -485.
  15. Cochrane, S., S.G. Denisenko, P.E. Renaud, C.S. Emblow, W.G. Ambrose, I.H. Ellingsen & J. Skarðhamar, 2009: Benthic macrofauna and productivity regimes in the Barents Sea — Ecological implications in a changing Arctic, Journal of Sea Research 61, 222-233.
  16. Skarðhamar J, D Slagstad, A Edvardsen 2007: Plankton distributions related to hydrography and circulation dynamics on a narrow continental shelf off Northern Norway. Estuarine, Coastal and Shelf Science 75, 381-392.
  17. Eilertsen HC, J Skarðhamar 2006: Temperatures of north Norwegian fjords and coastal waters: Variability, significance of local processes and air-sea heat exchange. Estuarine, Coastal and Shelf Science 67, 530-538.
  18. Skarðhamar J, H Svendsen 2005: Circulation and shelf-ocean interaction off North Norway. Continental Shelf Research 25, 12-13, pp 1541-1560.

Reports:

  • Karlsen Ø, PA Bjørn, IA Johnsen, J Skarðhamar, A Sandvik, J Albretsen, R Nilsen, RMS Llinnares, L Asplin, O Skilbrei, B Finstad, Ingebrigt Uglem, M Berg, GL Taranger 2015. Risikovurdering lakselus 2014. In: Svåsand T, KK Boxaspen, Ø Karlsen, BO Kvamme, LT Stien, GL Taranger (Eds.): Risikovurdering av norsk fiskeoppdrett 2014, Fisken og havet, særnummer 2-2015, s. 16-49. Havforskningsinstituttet.
  • Bjørn PA, Ø Karlsen, PA Jansen, D Jimenez, IA Johnsen, J Skarðhamar, A Sandvik, J Albretsen, AB Kristoffersen, R Nilsen, RMS Llinnares, L Asplin, O Skilbrei, B Finstad, GL Taranger 2014. Risikovurdering av Lakselus 2013. In: GL Taranger, T Svåsand, BO Kvamme, T Kristiansen, KK Boxaspen (Eds.): Risikovurdering av norsk fiskeoppdrett 2013, Fisken og havet, særnummer 2-2014, s. 14-52. Havforskningsinstituttet.
  • Asplin L, AD Sandvik, J Albretsen, J Skarðhamar, B Ådlandsvik 2012. En strøm av fjord- og kystdata. Havforskningsrapporten 2012, Fisken og havet, særnummer 1–2012, s. 41-42.

Popular science and outreach:

  • Ådlandsvik B, M Ostrowski, J Skarðhamar 2015: Physical conditions off the coast of Northern Norway. In: Buhl-Mortensen L, Thorsnes T. (eds), The Norwegian Sea Floor, New knowledge from MAREANO for ecosystem-based management.  In press.
  • Bjørn PA & J Skarðhamar  2015: ”Til laks åt alle…”. Ottar. Populærvitenskapelig tidsskrift fra Tromsø museum – Universitetsmuseet nr. 304, s30-36.

 

No Photo Available

Ekatarina Storhaug

PhD candidate

Akvaplan-nivaArctic R&D Work address Akvaplan-niva AS Fram Centre Tromsø 9296 Norway Work Phone: +47 77 75 03 74
Photo of Michael Daniel Streicher

Michael Daniel Streicher

PhD candidate

PhD project title: Marine Aquaculture and the Environment: Effects of Multiple Nutrient Sources.…Read More
Nord UniversityFaculty for Biosciences and Aquaculture Work address Faculty of Biosciences and Aquaculture Nord University Postbox 1490 Bodø 8049 Norway Work Phone: +47 75 51 74 61

PhD project title:

Marine Aquaculture and the Environment: Effects of Multiple Nutrient Sources.

PhD project description:

Marine aquaculture is going to expand globally in the coming decades. Further expansion of this sector is, however, only sustainable if farms are managed according to the resilience and carrying capacity of coastal ecosystems.

An emerging problem that is still understudied is the effect of multiple nutrient sources, i.e. pollution from several farms in close vicinity and the additional impact of agricultural run-off from land. Therefore, our project will study ecosystem-wide effects of nutrient pollution from multiple sources by combining experimental and field studies. We will address the overarching question of how coastal ecosystems respond to multiple inputs of nutrients.

Start date: September 2015
End date: Autumn 2018

Supervisors:

  • Henning Reiß (Nord, Bodø, Norway)
  • Marit Bjørnevik
  • Katrin Reiß
Photo of Arild Sundfjord

Arild Sundfjord

Researcher

Norwegian Polar InstituteCentre for Ice, Climate and Ecosystems (ICE) Work address Norwegian Polar Institute Fram Centre Tromsø 9296 Norway Work Phone: +47 77 75 05 35
Photo of Camilla Svensen

Camilla Svensen

Professor

Research interests:
  • Arctic marine zooplankton ecology
  • The biological pump and regulation processes
  • Structure and function of marine planktonic ecosystems
  • Regenerated production and the role of zooplankton
  • Linking copepods and microbial food webs
  • Life history strategies of small-sized and understudied copepod taxa including winter-ecology, feeding and reproduction.
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UiT The Arctic University of NorwayArctic and Marine Biology Work address Department of Arctic and Marine Biology Faculty of Biosciences, Fisheries and Economics UiT The Arctic University of Norway Tromsø 9037 Norway Work Phone: +47 77 64 45 32 Website: Arctic Marine System Ecology research group at UiT

Research interests:

  • Arctic marine zooplankton ecology
  • The biological pump and regulation processes
  • Structure and function of marine planktonic ecosystems
  • Regenerated production and the role of zooplankton
  • Linking copepods and microbial food webs
  • Life history strategies of small-sized and understudied copepod taxa including winter-ecology, feeding and reproduction.

Running national and international projects:

  • ECOTIP: Arctic biodiversity change and its consequences: Assessing, monitoring and predicting the effects of ecosystem tipping cascades on marine ecosystem services and dependent human systems. ERC HORIZON-2020 (grant agreement no 869383), 2020-2024, https://ecotip-arctic.eu
  • EvoCal: Arctic marine evolution: using local adaptation to infer future evolutionary responses of Calanus copepods to a changing environment (RCN), 2020-2023
  • Nansen Legacy. Task leader, RCN (276730), 2018-2023

Completed national and international projects:

  • FILAMO: Connecting Field work and Laboratory experiments to numerical Modeling in a changing marine environment. Collaborator, RCN (RCN 261636), 2017-2020
  • ArtAktiv – Studentaktiv læring av marine arter gjennom bruk av ny teknologi, UiT RESULT pedagogiske utviklingsmidler, 2017-2018
  • MICROSNOW: Marine snow, pelagic-benthic coupling and the impact of the harpacticoid copepod Microsetella norvegica, and other agents in a high-latitude fjord. Principal investigator, Fram Centre Fjord and Coast Flagship, 2017-2018.
  • CARBONBRIDGE: Bridging marine productivity regimes: How Atlantic advective inflow affects productivity, carbon cycling and export in a melting Arctic Ocean. Funded by RCN, 2013-2016 (PIs Marit Reigstad/P. Wassmann, UiT)
  • MicroPolar[μP]: Processes and Players in Arctic Marine Pelagic Food Webs -Biogeochemistry, Environment and Climate Change, NFR 2013-2017 (PIs: A. Larsen, G. Bratbak, UiB)
  • Vertical flux regulation and food web dynamics  at lover trophic levels (CONFLUX)  2010-2013, Tromsø Forskningsstiftelse (PI: M.Reigstad/P. Wassmann, UiT)
  • iAOOS-Norway, closing the loop NFR (IPY) 2010-2013 (PI: C. Mauritzen)

Relevant scientific publications:

  1. Barth-Jensen C, Koski M, Varpe Ø, Glad P, Wangensteen OS, Præbel K, Svensen C. (2020). Temperature-dependent egg production and egg hatching rates of small egg-carrying and broadcast-spawning copepods Oithona similis, Microsetella norvegica and Microcalanus pusillus. Journal of Plankton Research 42(5): 564-580, doi:10.1093/plankt/fbaa039
  2. Vernet M, Carstensen J, Reigstad M, Svensen C. (2020) Editorial: Carbon Bridge to the Arctic. Frontiers in Marine science 7, DOI:3389/fmars.2020.00204
  3. Wiedmann I, Ceballos-Romero E, Villa-Alfageme M, Renner AHH, Dybwad C, van der Jagt H, Svensen C, Assmy, P, Wiktor JM, Tatarek A, Rózańaka-Pluta M, Iversen MH. (2020) Arctic observations identify phytoplankton community composition as driver of carbon flux attenuation. Geophysical research letters 47, e2020GL087465,  https://doi.org/10.1029/2020GL087465
  4. Michelsen HK, Nilssen, EM, Pedersen T, Svensen C. (2020) Temporal and spatial dynamics of the invasive Red King Crab zoea and co-existing native decapods in Norwegian waters. Aquatic Biology 29: 1-16, DOI: https://doi.org/10.3354/ab00720
  5. Svensen, C, Halvorsen E, Vernet, M, Franzè G, Dmoch K, Lavrentyev PJ, Kwasniewski S. (2019) Zooplankton communities associated with new and regenerated primary production in the Atlantic inflow north of Svalbard. Frontiers in Marine science Vol 6, article 293, https://doi.org/10.3389/fmars.2019.00293
  6. Svensen C, Antonsen M, Reigstad M. (2018) Small copepods matter: Population dynamics of Microsetella norvegica in a high-latitude coastal ecosystem. J. Plankton Res. 40(4):446-457, https://doi.org/10.1093/plankt/fby019
  7. Kubiszyn A, Svensen C. (2018) First record of a rare species Polyasterias problematica (Prasinophyceae) in Balsfjord, northern Norway. Botanica marina 61(4):421-428, https://doi.org/10.1515/bot-2017-0123
  8. Svensen C, Antonsen M, Reigstad M. (2018) Small copepods matter: Population dynamics of Microsetella norvegica in a high-latitude coastal ecosystem. JPR 40(4):446-457 https://doi.org/10.1093/plankt/fby019
  9. Thor P, Bailey A, Dupont S, Calosi P, Søreide JE, De Wit P, Guscelli E, Loubet-Sartrou L, Deichmann IM, Candee MM, Svensen C, King A, Bellerby RGJ. (2018) Contrasting physiological responses to future ocean acidification among Arctic copepod populations. Global Change Biology 24 (1): E365-E377, doi: 10.1111/gcb.1387
  10. Choquet M, Haltebakk M, Dhanasiri A, Kosobokova K, Smolina I, Søreide JE, Svensen C, Melle W, Kwasniewski S, Eiane K, Daase M, Tveberg V, Skreslet S, Bucklin A, Hoarau G. (2017) Genetics redraws pelagic biogeography of Calanus. Biology letters 13 (12): Article Number: 20170588, DOI: 10.1098/rsbl.2017.0588
  11. Kling Michelsen H, Pedersen T, Nilssen EM, Reigstad M, Svensen C. (2017) Spatial patterns of spring meroplankton along environmental gradients in a sub-Arctic fjord. Aquat Biol 26: 185-197, https://doi.org/10.3354/ab00686
  12. Kling Michelsen H, Svensen C, Reigstad M, Nilssen EM, Pedersen T. (2017) Seasonal dynamics of meroplankton in a high-latitude fjord. J Mar Systems, 168: 17-30
  13. Svensen C, Vernet M. (2016) Production of dissolved organic carbon by Oithona nana grazing on two species of dinoflagellates. Mar Biol 163:237
  14. Svensen C, Morata N, Reigstad M. (2014) Increased degradation of copepod faecal pellets by co-acting dinoflagellates and Centropages. MEPS 516:61-70
  15. Zervoudaki S, Frangoulis C, Svensen C, Christou ED, Arashkevich EG, Ratkova TN, Varkitzi I, Krasakopoulou E, Pagou K. (2013) Vertical carbon flux of biogenic matter in a coastal area of the Aegean Sea: Importance of appendicularians. Estuaries and Coasts
  16. Aubert A, Svensen C, Hessen DO, Tamelander T (2012). CNP stoichiometry of a lipid-synthesising zooplankton, Calanus finmarchicus, from winter to spring bloom in a sub-Arctic sound, J Mar Syst, http://dx.doi.org/10.1016/j.jmarsys.2012.09.004
  17. Svensen C, Wexels Riser C, Reigstad M. (2012). Degradation of copepod faecal pellets: The role of small sized, < 180 µm, plankton and Calanus finmarchicus. MEPS 462: 39-49
  18. Svensen C, Seuthe L, Vasilyeva Y, Pasternak A, Hansen E. Zooplankton community across Fram Strait in autumn: are small copepods and protozooplankton important? (2011) Progress in Oceanography, 91: 534-544
  19. Mauritzen, C., E. Hansen, M. Andersson, B. et al. (2011). Closing the loop – Approaches to monitoring the state of the Arctic Mediterranean during the International Polar Year 2007–2008. Prog. Oceanogr. 90: 62-89
  20. Sopanen S, Uronen P, Kuuppo P, Svensen C, Rühl A, Tamminen T, Granéli E, Legrand C (2009). Transfer of nodularin to the copepod Eurytemora affinis through the microbial food web. AME. 55: 115-130
  21. Svensen C, Wexels Riser C, Cetinic I, Caric M. (2008). Vertical flux regulation and plankton composition in a simple ecological system: snapshots from the small marine Lake Rogoznica (Croatia). Acta Adriat. 49(1): 37-51
  22. Hagström JA, Granéli E, Maneiro I, Barreiro A, Petermann A, Svensen C. (2007). Release and degradation of amnesic shellfish poison from decaying Pseudo-nitzschia multiseries in presence of bacteria and organic matter. Harmful Algae 6: 175-188
  23. Svensen C, Vilicic D, Wassmann P, Arashkevich E, Ratkova T. (2007) Plankton community and vertical flux of biogenic matter in the highly stratified Krka Estuary (Eastern Adriatic). Est Coast Shelf Science 71: 381-390
  24. Doucette G, Maneiro I, Riveiro I, Svensen C. (2006). Phycotoxin pathways in aquatic food webs: transfer, accumulation and degradation. In: Granéli E., Turner J. (eds.). Ecology of Harmful Algae. Ecological studies, Vol 189. Springer Verlag
  25. Reigstad M, Wexels Riser C, Svensen C. (2005) The fate of copepod faecal pellets and the role of Oithona. Mar Ecol Prog Ser 304: 265-270
  26. Svensen C, Strogyloudi E, Wexels Riser C, Dahlmann J, Legrand C, Wassmann P, Granéli E, Pagou P. (2005) Reduction of cyanobacterial toxins through coprophagy in Mytilus edulis. Harmful Algae 4 (2): 329-336
  27. Svensen C, Nejstgaard JC. (2003) Is sedimentation of copepod faecal pellets determined by cyclopoids? Evidence from enclosed ecosystems. J. Plankton Res. 25:917-926
  28. Wassmann P, Olli K, Wexels Riser C, Svensen C. (2003) Ecosystem function, biodiversity and vertical flux regulation in the twilight zone. In: Wefer, G., Lamy, F., Mantoura, F. (eds.). Marine Science Frontiers for Europe, Springer Verlag. Berlin, New York
  29. Svensen, C. (2002) Eutrophication and vertical flux: a critical evaluation of silicate addition. Mar Ecol Prog Ser 240: 21-26
  30. Svensen C, Egge JK, Nejstgaard JC, Wassmann P (2002) Pulsing versus constant supply of nutrients (N, P and Si): effect on phytoplankton, mesozooplankton and vertical flux of biogenic matter. Sci. Mar. 66(3): 189-203
  31. Svensen C, Egge JK, Stiansen JE. (2001) Can silicate and turbulence regulate the vertical flux of biogenic matter? A mesocosm study. Mar. Ecol. Prog. Ser. 217:67-80
  32. Svensen C, Kiørboe T (2000) Remote prey detection in Oithona similis: hydromechanical vs. chemical cues. J.Plankton Res. 22/6: 1155-1166
  33. Svensen C, Tande K (1999) Female dimorphism and sex change in Calanus finmarchicus. Mar Ecol Prog Ser. 176:93-102

Popular science and outreach:

  • Halvorsen E, Svensen C. (2018) Zooplankton in a changing Arctic: on the edge of expansion or extinction? Contribution to popular scientific book “On the Edge”, Orkana Forlag, editor P. Wassmann
  • Svensen C (2014) Isbryter. Contribution to anthology “Isfritt”, Spartacus forlag (in Norwegian)
  • Reigstad M, Svensen C (2003) Små prosesser med stor betydning: Karbonets vei gjennom det marine økosystemet. Naturen 5: 194-201 (in Norwegian)

 

  • 2017 Blogging for forskning.no (from Nansen Legacy first cruise)
  • 2017 Ocean Seminar for artists, Røst Air-artist residence. Invited lecture on Plankton.
  • 2016 Science days (Forskningsdagene), Tromsø. Outreach stand with theme “Visible and invisible borders” Award for best stand
  • 2016 Panel debate with artists in “Thinking at the Edge of the World”, a cross-disciplinary conference at Svalbard 12-13 June 2016. Invited by Office for Contemporary Art Norway (OCA) and the Northern Norway Art museum (NNKM)
  • 2015 Featured in NRK production “Schrødingers katt” during fieldwork at Svalbard, 45 min programme broadcasted in National television NRK
  • 2013-2014 Blogging for Sciencenordic.com (English equivalent to “forskning.no”)
  • 2012 Blogging for Norwegian science outreach blog http://www.kollokvium.no (in Norwegian)
  • 2011 PolArt, communicating science through art, an ARCTOS outreach activity. Member of jury selecting artists for scientific cruises and the subsequent exhibition in art gallery.
  • 2010 Lecturing for high-school classes at University of Tromsø,
  • 2010 “Researchers marathon” – lecturing on plankton in marine ecosystems for the general public. Arrangement within “Forskningsdagene”, Tromsø
  • 2010 Marine biology teaching for kinder garden and elementary school, Tromsø
Photo of Freya Sykes

Freya Sykes

PhD Candidate

PhD project title: Arctic ocean hydrography and circulation during the last interglacial period through the development and application of new proxy methods.…Read More
UiT The Arctic University of NorwayDepartment of Geosciences Work address CAGE – Centre for Arctic Gas hydrate, Environment and Climate Department of Geosciences UiT The Arctic University of Norway Tromsø 9037 Norway Website: CAGE – personal profile

PhD project title:

Arctic ocean hydrography and circulation during the last interglacial period through the development and application of new proxy methods.

PhD project description:

I am currently working towards a PhD within the Arctic Ocean under warm climates (ARCLIM) group, headed by Mohamed Ezat. My research is focused on the use of foraminifera as a proxy for reconstructing surface and bottom water hydrography in (sub)polar regions. Foraminifera are a microscopic single-celled marine organism, ubiquitous across the world’s oceans and can be both planktonic, floating in near-surface water, or benthic. I am growing the species Globigerina bulloides in culture to investigate how the incorporation of chemical elements in its calcium carbonate shell changes under different environmental conditions (varying salinity, temperature, pH etc). The results of the culturing experiments will be applied, in combination with other foraminifera proxy data, to fossil shells from interglacial sediments and used to reconstruct sub(polar) ocean conditions during warmer than present time periods. The increased understanding of sub(polar) warming this brings can then be applied to models used for predicting future ocean conditions.

Start date: 21.11.2021
Planned submission date: Autumn 2025

Supervisors:

Mohamed Ezat (UiT, Tromsø, Norway)
Julie Meilland (Marum, Bremen, Germany)
Gavin L. Foster (University of Southampton, Southampton, UK)