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.

A B C D E F G H I J K L M N O P R S U V W Z
Photo of Elliot Sivel

Elliot Sivel

PhD candidate

Research interests:
  • Fish ecology
  • Climate change
  • Polar ecosystems
  • Food web modelling
  • Biodiversity
PhD thesis title: Modelling food web dynamics in the Barents Sea PhD project description: During my PhD, I aim at evaluating the impact of climate change and fisheries on the Barents Sea ecosystem.…Read More
Institute of Marine Research Address Framsenteret POB 6606 Langnes Tromsø 9296 Home Phone: +47 94 84 96 51

Research interests:

  • Fish ecology
  • Climate change
  • Polar ecosystems
  • Food web modelling
  • Biodiversity

PhD thesis title: Modelling food web dynamics in the Barents Sea

PhD project description:
During my PhD, I aim at evaluating the impact of climate change and fisheries on the Barents Sea ecosystem. Therefore, we use an alternative approach to the common deterministic approach: The Non-Deterministic Network Dynamic model (NDND). With this model, we will provide predictions of the future state of the Barents Sea. We will also evaluate the performance of the NDND model using Pattern-Oriented Modelling.

Start date: 01.10.2018
End date: 30.09.2021

Supervisors:

  • Benjamin Planque (Havforskningsinstituttet / Institute of Marine Research)
  • Ulf Lindstrøm (Havforskningsinstituttet / Institute of Marine Research)
  • Nigel Gilles Yoccoz (Universitet i Tromsø, Arctic and Marine Biology)

Completed projects:

  • Bachelor thesis: Phylogeny of bathydraconid fish (Nothothenioidei) (2015)
  • Master thesis: Integrative taxonomy of genus Echinocyamus (2017)
  • Master thesis: Measuring of biodiversity accounting for individual size in the Gulf of Lion (2018)

Reports:
ICES WGCOMEDA (2018), Interim Report of the Working Group on Comperative Analyses between European Atlantic and Mediterranean marine ecosystems to move towards an Ecosystem-based Approach to Fisheries (WGCOMEDA), ICES CM 2018/IEASG:09

No Photo Available

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
No Photo Available

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

Associate Professor

Research interests:
  • Arctic marine zooplankton ecology
  • Vertical carbon flux and regulation mechanisms
  • 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 as well as 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
  • Vertical carbon flux and regulation mechanisms
  • 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 as well as feeding and reproduction.

Running national and international projects:

  • Nansen Legacy. Task leader, RCN (276730), 2018-2023
  • FILAMO: Connecting Field work and Laboratory experiments to numerical Modeling in a changing marine environment. Collaborator, RCN (RCN 261636), 2017-2020

Completed national and international projects:

  • 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. 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
  2. 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
  3. 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
  4. 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
  5. 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
  6. 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
  7. Svensen C, Vernet M. (2016) Production of dissolved organic carbon by Oithona nana grazing on two species of dinoflagellates. Mar Biol 163:237
  8. Svensen C, Morata N, Reigstad M. (2014) Increased degradation of copepod faecal pellets by co-acting dinoflagellates and Centropages. MEPS 516:61-70
  9. 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
  10. 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
  11. 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
  12. 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
  13. 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
  14. 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
  15. 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
  16. 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
  17. 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
  18. 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
  19. 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
  20. 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
  21. Svensen C, Nejstgaard JC. (2003) Is sedimentation of copepod faecal pellets determined by cyclopoids? Evidence from enclosed ecosystems. J. Plankton Res. 25:917-926
  22. 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
  23. Svensen, C. (2002) Eutrophication and vertical flux: a critical evaluation of silicate addition. Mar Ecol Prog Ser 240: 21-26
  24. 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
  25. 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
  26. Svensen C, Kiørboe T (2000) Remote prey detection in Oithona similis: hydromechanical vs. chemical cues. J.Plankton Res. 22/6: 1155-1166
  27. Svensen C, Tande K (1999) Female dimorphism and sex change in Calanus finmarchicus. Mar Ecol Prog Ser. 176:93-102

Popular science and outreach:

  • 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 Janne E. Søreide

Janne E. Søreide

Associate Professor

Research interests:
  • Arctic marine ecology with particularly interest in pelagic but also ice-associated (sympagic) and benthic communities
  • Focusing on physiology and population dynamics
  • Distribution patterns as well as trophic interactions and energy flow
  • Combination of field and experimental work using standard sampling methods as well as state-of-the-art biochemical tools.
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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 55

Research interests:

  • Arctic marine ecology with particularly interest in pelagic but also ice-associated (sympagic) and benthic communities
  • Focusing on physiology and population dynamics
  • Distribution patterns as well as trophic interactions and energy flow
  • Combination of field and experimental work using standard sampling methods as well as state-of-the-art biochemical tools.

Running national and international projects:

  • IMOS: Isfjorden Marine Observatory Svalbard. Norwegian  Research Council 2015-2018.
  • COPPY: Fate of COPePod secondarY production in a chancing Arctic Norwegian Research Council 2013-2016
  • Big Black Box: Marine ecological processes during the polar night. Norwegian Research Council 2013-2016

Completed national and international projects:

  • CLEOPATRA II: Climate effects on planktonic food quality and trophic transfer in Arctic Marginal Ice Zones. 2012-2015. Norwegian Research Council
  • CLEOPATRA: Climate effects on planktonic food quality and trophic transfer in Arctic Marginal Ice Zones. 2007-2010. Norwegian Research Council

Relevant scientific publications:

  1. Freese D, Niehoff B, Søreide JE, Sartoris FJ (in press) Seasonal patterns in extracellular ion concentrations and pH of the Arctic copepod Calanus glacialis. Limnology and Oceanography. DOI:10.1002/lno.10158
  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 JE, Varpe Ø, Lønne OJ, Daase M, Falk-Petersen S (2015) In the dark: A review of ecosystem processes during the Arctic polar night. Progress in Oceanography. doi:http://dx.doi.org/10.1016/j.pocean.2015.08.005
  3. Alkire MB, Nilsen F, Falck E, Søreide J, Gabrielsen TM (2015) Tracing sources of freshwater contributions to first-year sea ice in Svalbard fjords. Continental Shelf Research 101:85-97. doi:10.1016/j.csr.2015.04.003
  4. Berge J, Cottier F, Varpe O, Renaud PE, Falk-Petersen S, Kwasniewski S, Griffiths C, Søreide JE, Johnsen G, Aubert A, Bjaerke O, Hovinen J, Jung-Madsen S, Tveit M, Majaneva S (2014) Arctic complexity: a case study on diel vertical migration of zooplankton. Journal of Plankton Research 36 (5):1279-1297. doi:10.1093/plankt/fbu059
  5. Grigor JJ, Søreide JE, Varpe Ø (2014) Seasonal ecology and life-history strategy of the high-latitude predatory zooplankter Parasagitta elegans. Marine Ecology Progress Series 499:77-88. doi:10.3354/meps10676
  6. Daase M, Falk-Petersen S, Varpe Ø, Darnis G, Søreide JE, Wold A, Leu E, Berge J, Philippe B, Fortier L (2013) Timing of reproductive events in the marine copepod Calanus glacialis: A pan-Arctic perspective. Canadian Journal of Fisheries and Aquatic Sciences 70 (6):871-884
  7. Morata N, Søreide J (2013) Effect of light and food on the metabolism of the Arctic copepod Calanus glacialis. Polar Biol:1-7. doi:10.1007/s00300-013-1417-2
  8. Iken K, Bluhm B, Søreide JE (2013) Arctic benthic communities. In Arctic Report Card 2013. http://www.arctic.noaa.gov/report13/
  9. Søreide JE, Carroll ML, Hop H, Ambrose WG, Hegseth EN, Falk-Petersen S (2013) Sympagic-pelagic-benthic coupling in Arctic and Atlantic waters around Svalbard revealed by stable isotopic and fatty acid tracers. Marine Biology Research 9 (9):831-850. doi:10.1080/17451000.2013.775457.
  10. Weydmann A, Søreide JE, Kwaśniewski S, Leu E, Falk-Petersen S, Berge J (2013) Ice-related seasonality in zooplankton community composition in a high Arctic fjord. Journal of Plankton Research 35 (4):831-842. doi:10.1093/plankt/fbt031
  11. Gabrielsen TM, Merkel B, Søreide JE, Johansson-Karlsson E, Bailey A, Vogedes D, Nygård H, Varpe Ø, Berge J. (2012) Potential misidentifications of two climate indicator species of the marine arctic ecosystem: Calanus glacialis and C. finmarchicus. Polar Biology:1-8. doi.10.1007/s00300-012-1202-7
  12. Weydmann A, Søreide JE, Kwasniewski S, Widdicombe S (2012) Influence of CO2-induced acidification on the reproduction of a key Arctic copepod Calanus glacialis. Journal of Experimental Marine Biology and Ecology 428 (0):39-42. doi:10.1016/j.jembe.2012.06.002.
  13. Søreide JE, Nygard H (2012) Challenges using stable isotopes for estimating trophic levels in marine amphipods. Polar Biology 35 (3):447-453. doi:10.1007/s00300-011-1073-3
  14. Nygård H, Berge J, Søreide JE, Vihtakari M, Falk-Petersen S (2012) The amphipod scavenging guild in two Arctic fjords: seasonal variations, abundance and trophic interactions. Aquatic Biology 14 (3):247-264. doi:10.3354/ab00394
  15. Wold A, Darnis G, Søreide JE, 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, south-eastern Beaufort Sea. Polar Biology 34 (12):1929-1946. doi:10.1007/s00300-011-1062-6
  16. Daase M, Søreide JE, D. M (2011) Effects of food quality on naupliar development in Calanus glacialis at subzero temperatures. Marine Ecology Progress Series 429:111-124. doi:10.3354/meps09075
  17. Leu E, Søreide JE, Hessen DO, Falk-Petersen S, Berge J (2011) Consequences of changing sea-ice cover for primary and secondary producers in the European Arctic shelf seas: Timing, quantity, and quality. Progress in Oceanography 90 (1–4):18-32. doi:http://dx.doi.org/10.1016/j.pocean.2011.02.004
  18. Søreide JE, 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 Biology 16 (11):3154-3163. doi:10.1111/j.1365-2486.2010.02175.x
  19. Leu E, Wiktor J, Søreide JE, Berge J, Falk-Petersen S (2010) Increased irradiance reduces food quality of sea ice algae. Marine Ecology Progress Series 411:49-60. doi:10.3354/meps08647
  20. Vogedes D, Varpe O, Søreide JE, Graeve M, Berge J, Falk-Petersen S (2010) Lipid sac area as a proxy for individual lipid content of arctic calanoid copepods. Journal of Plankton Research 32 (10):1471-1477. doi:10.1093/plankt/fbq068
  21. Berge J, Cottier F, Last KS, Varpe O, Leu E, Søreide J, Eiane K, Falk-Petersen S, Willis K, Nygard H, Vogedes D, Griffiths C, Johnsen G, Lorentzen D, Brierley AS (2009) Diel vertical migration of Arctic zooplankton during the polar night. Biology Letters 5 (1):69-72. doi:10.1098/rsbl.2008.0484.
  22. Søreide JE, Falk-Petersen S, Hegseth EN, Hop H, Carroll ML, Hobson KA, Blachowiak-Samolyk K (2008) Seasonal feeding strategies of Calanus in the high-Arctic Svalbard region. Deep-Sea Research II 55 (20-21):2225-2244. doi:10.1016/j.dsr2.2008.05.024
  23. Blachowiak-Samolyk K, Søreide JE, Kwasniewski S, Sundfjord A, Hop H, Falk-Petersen S, Hegseth EN (2008) Hydrodynamic control of mesozooplankton abundance and biomass in northern Svalbard waters (79-81°N). Deep-Sea Research II 55 (20-21):2210-2224. doi:10.1016/j.dsr2.2008.05.018
  24. Søreide JE, Tamelander T, Hop H, Hobson H, Johansen I (2006) Sample preparation effects on stable C and N isotope values: a comparison of methods in Arctic marine food web studies. Marine Ecology Progress Series 328: 17-28.
  25. Hop H, Falk-Petersen S, Svendsen H, Kwasniewski S, Pavlov V, Pavlova O, Søreide JE (2006) Physical and biological characteristics of the pelagic system across Fram Strait to Kongsfjorden. Progress in Oceanography 71 (2-4):182-231. doi:10.1016/j.pocean.2006.09.007
  26. Søreide JE, Hop H, Carroll ML, Falk-Petersen S, Hegseth EN (2006) Seasonal food web structures and sympagic–pelagic coupling in the European Arctic revealed by stable isotopes and a two-source food web model. Progress in Oceanography 71 (1):59-87. doi:10.1016/j.pocean.2006.06.001
  27. Tamelander T, Søreide JE, Hop H, Carroll ML (2006) Fractionation of stable isotopes in the Arctic marine copepod Calanus glacialis: Effects on the isotopic composition of marine particulate organic matter. Journal of Experimental Marine Biology and Ecology 333 (2):231-240. doi:10.1016/j.jembe.2006.01.001
  28. Søreide JE, Hop H, Falk-Petersen S, Gulliksen B, Hansen E (2003) Macrozooplankton communities and environmental variables in the Barents Sea marginal ice zone in late winter and spring. Marine Ecology Progress Series 263:43-64. doi:10.3354/meps263043

Popular science and outreach:

 

 

Photo of Charlotte Pedersen Ugelstad

Charlotte Pedersen Ugelstad

Master student

Master project title: Effects of terrestrial inputs on community composition of softbottom benthos in Isfjorden, Svalbard.…Read More
UiT The Arctic University of NorwayDepartment of Arctic and Marine Biology Work address Department of Arctic and Marine Biology Faculty of Biosciences, Economics and Fisheries UiT The Arctic University of Norway Tromsø 9037 Norway

Master project title:

Effects of terrestrial inputs on community composition of softbottom benthos in Isfjorden, Svalbard.

Master project description:

Benthic community composition is determined by a variety of abiotic factors, which vary on regional and local scales. In Svalbard fjords, benthic communities are subject to a range of environmental conditions, ranging from disturbed inner basins where glacial melt water brings freshwater and heavy loads of sediments, to deep saline waters in the open fjord. Increased terrestrial run-off from a warming Arctic landscape is delivering freshwater and inorganic sediments (and associated nutrients and organic matter) to coastal areas, with implications for local benthic community structure and functioning. This MSc project focuses on benthic community distribution in Isfjord in relation to physical parameters of the water column and sediments. Soft-bottom macrofauna samples will be collected using a Van-Veen grab along inner to outer fjord transects in Billefjord, Tempelfjord and Adventfjord in the Isfjord fjordsystem and community composition will be analyzed in relation to abiotic factors.ThisMSc project is a part of the TerrACE project (NFR project from 2017–2021; PI: Amanda Poste, NIVA).

Start date: Aug. 2017
End date: May 2019

Supervisors:

Bodil Bluhm (UiT, Tromsø, Norway)
Paul Renaud (APN, Tromsø, Norway)
Amanda Poste (NIVA)

No Photo Available

Anna Vader

Researcher

Research interests:
  • Activity and biodiversity of arctic protists (mainly pico- and nano-eukaryotes)
  • Marine food chains (the use of molecular tools for prey studies of zooplankton)
  • RNA biology
Running national and international projects:
  • MicroFUN - Investigation of the the biodiversity and function of terrestrial and marine microbial eukaryotes in Svalbard
 Read More
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 59

Research interests:

  • Activity and biodiversity of arctic protists (mainly pico- and nano-eukaryotes)
  • Marine food chains (the use of molecular tools for prey studies of zooplankton)
  • RNA biology

Running national and international projects:

  • MicroFUN – Investigation of the the biodiversity and function of terrestrial and marine microbial eukaryotes in Svalbard

 

Photo of Øystein Varpe

Øystein Varpe

Professor

Research interests:
  • Evolutionary and Seasonal Ecology
  • Main aim: understand why we observe variation in life histories and behavior and how this variation influences interactions, populations and ecosystems.
Read More
UNIS The University Centre in SvalbardArctic Biology Address UNIS The University Centre in Svalbard Post box 156 Longyearbyen 9171 Norway Work Phone: + 47 79 02 64 63 Cell Phone: + 47 97 76 26 45 Website: Seasonal Ecology Group – Department of Arctic Biology – UNIS Website: UNIS – The University Centre in Svalbard – my main employer Website: Akvaplan-niva – adjunct position here

Research interests:

  • Evolutionary and Seasonal Ecology
  • Main aim: understand why we observe variation in life histories and behavior and how this variation influences interactions, populations and ecosystems.

I work in highly seasonal environments and study the scheduling of annual events and the trade-offs involved. Key traits: reproduction, energy storage, dormancy and migrations. What is the scope of state-dependent responses? What is the role of phenotypic plasticity versus evolution? Most of my work is on the ecology and evolution of birds, fish and zooplankton using mathematical models and statistical analyses of data. An important component of my work is to use the insights we gain to understand and predict how organisms respond to environmental variability and change, with pollution, harvesting and climate change as central stressors.

Student project opportunities:

If you find some of our research of interest and wish to do a student project (bachelor, master or PhD), please contact me for current opportunities or with own suggestions. Examples of past master students:

  • Marine Cusa (2016) The effect of seasonality on polar cod (Boreogadus saida) dietary habits and temporal feeding strategies in Svalbard waters.
  • Tom Jasper Langbehn (2015) Feeding success in an extreme-light environment: modelling seasonal prey encounter of Arctic fish.
  • Caitlin Frankish (2015) A meta-ecosystem model: seabirds as vectors
  • Samuel Louis Eglund Newby (2015) Feeding activity and diet of Arctic and boreal fish species during the polar night
  • Zofia Burr (2014) Breeding later at higher latitudes: explaining seabird reproductive timing in the northeastern Atlantic.
  • Jordan Grigor (2011) An investigation into strategies of protandrous emergence and arrival in Calanus spp.
  • Beke Regelin (2011) Purple sandpipers (Calidris maritima) feeding in an Arctic estuary: tidal cycle and seasonal dynamics in abundance.
  • Allison Bailey (2010) Lipids and diapause in Calanus spp. in a high-Arctic fjord: state-dependent strategies?
  • Anika Beiersdorf (2009) Foraging trip duration in relation to body mass: are little auks heavier following longer or shorter trips?

Please also visit the Seasonal Ecology Group – an umbrella for my work and supervision.

Running national and international projects (some expamples):

  • SEATIME – Timing of reproduction in seabirds: large-scale comparisons, and links to population dynamics, climate and lower trophic levels. (Fram Centre Flagship Project).
  • Numerical competence and student-active research (Thon stiftelsen)
  • Stochastic fluctuations and the evolution of zooplankton life histories in high latitude marine ecosystems (Polish Research Council)

Peer reviewed publications (see also Google Scholar or ResearchGate):

Selected popular science and outreach:

Links:

Fulbright Arctic Initiative Scholar 2015-2016

Video of talk on ecological consequences of sea ice changes in the Arctic.

View from the roof of my office: camera

Favourite mainland retreat – Bremanger: you-tube movie