Torstein Pedersen
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Research interests
My research is focused on; 1) ecosystem dynamics of the Barents Sea and coastal areas analysed using mass-balance modeling and stable isotopes analysis, 2) dynamics of coastal fish nursery areas and 3) life-history studies of fish.
https://www.researchgate.net/profile/Torstein-Pedersen
https://scholar.google.com/citations?user=I0iBkpcAAAAJ&hl=en
Teaching
I am teaching on the following courses “Foodwebs and Fisheries”, “Arctic Marine System Ecology”, “Resources in norther areas” and “Marine Ecology”
Member of research group
CV
CURRICULUM VITAE
Torstein Pedersen
Born: 8 July 1959, Sortland in Vesterålen Adress: Sørliaveien 42, 9018 Tromsø
1985 Master (Cand. Scient.) in Fisheries Biology, University of Bergen, Norway 1986 Research fellow, Institute of Marine Research, (Austevoll) Bergen
1986-1993 Research fellow at University of Tromsø
1994 PhD (Dr. Scient.) in Resource Biology, University of Tromsø, Norway
1994-2009 Associate professor in Fisheries Biology at University of Tromsø
2009- Professor in Fisheries Biology at University of Tromsø,
now UiT The Arctic University of Norway
Email: Torstein.Pedersen@uit.no
Key qualifications: fisheries ecology, population dynamics, multispecies and ecosystem modelling, predator-prey interactions, effects of harvesting on fish resources and ecosystems, early life history of fishes, interaction of top- predators (including whales and sea-birds) and fish resources, field-based marine ecology, coastal ecology, fish nursery area ecology
Referee in journals and symp. proceedings
Aquaculture, Aquatic Biology, Aquatic Living Resources, Canadian Journal of Fisheries and Aquatic Science, Deep Sea Research II, Ecological Modelling, Ecography, Environmental Biology of Fishes, Estuarine and Coastal Shelf Science, Fish and Fisheries, Fisheries Management and Ecology, Fisheries Research, Fishery Bulletin, Food Webs, Frontiers in Marine Science, ICES Journal of Marine Science, Journal of Experimental Marine Biology and Ecology, J. Mar. Biol. Ass. U.K., Journal of Fish Biology, Journal of Marine Systems, Journal of Sea Research, Marine Biology Research, Marine Ecology Progress Series, Nature Communications, Ocean and Coastal Management, PLOS One, Polar Biology, Progress in Oceanography, Sarsia, Thalassas, proceedings from 6 international symposia
Administration and project leadership
1994-1997 Leader of the project “Enhancement of cod stocks in fjords”, part of the PUSH-program). Supported by the Norwegian Department for Fisheries. 1994-1997 Leader for the project ”Effects of predation on recruitment variability in cod stocks” funded by the Norwegian Research Council. 2001-2005 Leader of ”Workpackage 3 ”Predator-prey interactions in the field” within the strategic program BASECOEX (Capelin and Herring in the Barents Sea – Coexistence or Exclusion) supported by the Norwegian Research Council. 1995 and 2005-2008 Member of the board at Norwegian College for Fishery Research, University of Tromsø. 2008-2011 Responsible for Ecopath-modelling on the Strategic Institute Program (EPIGRAPH) run by the Institute of Marine Research, Norway. 2008- 2012 Leader for the project “Investigating coastal ecosystem structure and dynamics using Ecopath/Ecosim ecosystem models and stable isotope data” funded by the Research Council of Norway. 2016 – 2019 Responsible for Ecopath modelling on the CoArc – project. 2017- 2020 Responsible for Ecopath modelling on the BSECO-project. 2017- Responsible for Ecopath modelling on the Nansen Legacy program, 2023- Responsible for Ecopath & Ecosim modelling on Tana River salmon project, 2022 Research group leader for “Arctic Marine System Ecology” at UiT
International activities, convenor and editor of special volumes and issues
1997- Participated and a partner in the international EU-funded project “Placing Fisheries in their Ecosystem Context”, see: http://www.ecopath.org/ . 2004 Convenor for the session “Theme Session DD on Mortality and Linkages between Fish Eggs/Larvae and their Predators in Marine Ecosystems – A Multidisciplinary Approach“ at the ICES Annual Science Meeting in Vigo Spain. 2007 Convenor for the ECONORTH (Ecosystem Dynamics in the Norwegian Sea and Barents Sea) Symposium that was held at the Norwegian College of Fishery Science, University of Tromsø, Norway, 12th - 15th March 2007. Guest Co-editor for symposium proceedings published in Deep Sea Research II, volume 56, issues 21-22. 2015 Organizer of international workshop on “Ecology of northern fjords”, Tromsø 25th - 27th november 2015.
Teaching and evaluation of exams
Has extensive teaching experience on courses in fishery, resource biology, system ecology and ecological modelling since 1993. Responsible for course in ecological modelling in 2006 and have developed a course at the master level entitled “Foodwebs and Fisheries” running from 2021. Have given lectures and laboratory teaching in courses in general ecological methodology, resource biology, marine living resources, marine ecology and system ecology. Have given lecture at international PhD course in “Nursery ground Ecology” in Bergen 2009.
Supervision of master and PhD students
Have supervised 43 master students on their master thesis to final exam. Have supervised nine PhD students; Elvar Hallfredsson (2001-2006), Marianne Nilsen (2003-2007), Lise H. Ofstad (2009-2013), Silje Ramsvatn (2009-2013), Nina Mikkelsen (2004-2013), Kristin Windsland (2008-2014), Mona Fuhrman (2010-2016), Lars Henrik Larsen (2013-2017) and Helena Michelsen (2013-2017) which have defended their degree.
Evaluation commisions for master and PhD degrees
Has been member of more than 64 committees for evaluation of final master exams (including evaluation of theses) at University of Tromsø, UiT The Arctic University of Norway, University of Bergen, University of Oslo, Nord University and University of Copenhagen. Has been member of 18 PhD evaluation committees, five as coordinator at University of Tromsø, thirteen as opponent in committees at University of Bergen (Norway), University of Aarhus (Denmark), Technical University of Denmark, University of Manitoba (Canada).
Scientific publication and outreach
Have 78 peer-reviewed publications and have given numerous talks and written popular articles and articles in newspapers, and have participated in TV and radio
Publications with peer review published after 2016
78. Nascimento, M., Husson, B., Guillet, L., Pedersen, T., 2023. Modelling the spatial shifts of functional groups in the Barents Sea using a climate-driven spatial food web model. Ecol. Modell., 482: 110358
77. Pedersen, T., Amundsen, C., and Wickler, S., 2022. Characteristics of early Atlantic cod (Gadus morhua L.) catches based on otoliths recovered from archaeological excavations at medieval to early modern sites in northern Norway. ICES J. Mar. Sci.,
76. Planque, B., Aarflot, J.M., Buttay, L., Carroll, J.L., Frasner, F., Hansen, C., Husson, B., Langangen, Ø., Lindstrøm, U., Pedersen, T., Primicerio, R., Sivel, E., Skogen, M.D., Strombom, E., Stige, L.C., Varpe, Ø., Yoccoz, N.G., 2022. A standard protocol for describing the evaluation of ecological models. Ecol. Modell. 471, 110059
75. Pedersen, T., 2022. Comparison between trophic positions in the Barents Sea estimated from stable isotope data and a mass balance model. Front. Mar. Sci. 04 March 2022, https://doi.org/10.3389/fmars.2022.813977
74. Ofstad, L.H., Hjatun, H., Pedersen, T., Steingrund, P., Mikkelsen, B., 2022. Horizontal and vertical migration of anglerfish Lophius piscatorius in relation to hydrography in Faroese waters. Front. Mar. Sci. 04 March 2022, https://doi.org/10.3389/fmars.2022.823066
73. Sørensen, O.P., Pedersen, T., 2021. Effects of season, bottom substrate and population dynamics on fish communities in shallow northeast Atlantic coastal waters. J. Sea Res., 178: 102136
72. Pedersen, T., Mikkelsen, N., Lindstrøm, U., Renaud, P.E., Nascimento, M.C., Blanchet, M-A., Ellingsen, I., Jørgensen, L.L., Blanchet, H., 2021. Overexploitation, recovery and warming of the Barents Sea Ecosystem during 1950-2013. Front. Mar. Sci. 8:732637.
71. Vilas, D., Coll, M., Pedersen, T., Corrales, X., Filbee-Dexter, K., Wernberg, T.2020. Future trajectories of change for an Arctic deep-sea ecosystem connected to coastal kelp forests. Restoration Ecology. 29, No. S2, e13327. doi: 10.1111/rec.13327
70. Ramirez-Llodra, E., Pedersen, T., Filbee-Dexter, K., Hauquier, F., Guilini, K., Mikkelsen, N., Borgersen, G., Van Gyseghem, M., Vanreusel, A., Vilas, D. 2020. Community structure of deep fjord and shelf benthic fauna receiving different detrital inputs in northern Norway. Deep Sea Res (I Oceanogr Res Pap) doi: https://doi.org/10.1016/j.dsr.2020.103433.
69. Aykanat, T., Rasmussen, M., Ozerov, M., Niemäla, E., Paulin, L., Vaha, J-P., Hindar, K., Wennevik, V., Pedersen, T., Svenning, M., Primmer, C., 2020. Life history genomic regions explain differences in Atlantic salmon marine diet specialization. J. Animal Ecol., 89:2677-2691
68. Pedersen, T., Strand, H.K., Christie, H., Moy, F., 2020. Predation mortality from ambush and cruising predators on newly settled 0-group gadoids. J. Exp. Mar. Biol. Ecol. 529: 151396.
67. Strand, H. K., Pedersen, T., Christie, C., Moy, F., 2020. Synergism between cruising cod and ambush sculpin predators on 0-group gadoids is modified by daylight cycle and presence of aggressive wolffish. J. Exp. Mar. Biol. Ecol., 526:151356 https://doi.org/10.1016/j.jembe.2020.151356
66. Vilas, D., Coll, M., Pedersen, T., Corrales, X., Filbee-Dexter, K., Pedersen, M.F., Norderhaug, K.M., Fredriksen, S., Wernberg, T., Ramírez-Llodra, E., 2020. Kelp-carbon uptake by Arctic deep-sea food webs plays a noticeable role in maintaining ecosystem structural and functional traits. J. Mar. Sys., 203:103268 (https://doi.org/10.1016/j.jmarsys.2019.103268)
65. Michelsen, H.K., Nilssen, E.M., Pedersen, T., Svensen, C., 2020. Temporal and spatial dynamics of the invasive red king crab and native brachyuran and anomuran larvae in Norwegian waters. Aquatic Biology, 29:1-16
64. Christie, H., Gundersen, H., Rinde, E., Filbee-Dexter, K., Norderhaug, K., Pedersen, T., Bekkby, T., Gitmark, J., Fagerli, C., 2019. Can multitrophic interactions and ocean warming influence large- scale kelp recovery? Ecology and Evolution, 9:2847-2862
63. Pedersen T., Fuhrmann M.M., Lindstrøm U., Nilssen E.M., Ivarjord T., Ramasco V., Jørgensen L.L., Sundet J.H., Sivertsen K., Källgren E., Hjelset A.M., Michaelsen C., Systad G., Norrbin F., Svenning M.A., Bjørge A., Steen H., Nilssen K.T., 2018. Effects of the invasive red king crab on food web structure and properties in an Atlantic fjord. Mar. Ecol. Prog. Ser., 596:13-31. DOI:https://doi.org/10.3354/meps12548
62. Michelsen, H.K., Nilssen, E.M., Pedersen. T., Reigstad, M., Svensen, C., 2017. Spatial patterns of spring meroplankton along environmental gradients in a sub-arctic fjord. Aquatic Biology, 26: 185-197.
61. Michelsen, H.K., Svensen, C., Reigstad, M., Nilssen, E.M., Pedersen. T., 2017. Seasonal dynamics of meroplankton in a high-latitude fjord. J. Mar. Sys., 168: 17-30.
60. Fuhrmann M.M., Pedersen T., Nilssen E.M., 2017. Trophic niche of the invasive red king crab
Paralithodes camtschaticus in a benthic food web. Mar. Ecol. Prog. Ser., 565:113-129
59. Mikkelsen N., Pedersen T., 2017. Invasive red king crabs feed on both spawned-out capelin and their eggs. Mar. Ecol. Prog. Ser., 563: 139-155.
58. Mikkelsen, N., Pedersen, T., dos Santos Schmidt T.C., Falk-Petersen, I-B., Slotte, A. 2017. Are life histories of Norwegian fjord herring populations of Pacific ancestry similar to those of Atlantic or Pacific herring? J. Mar. Sys., http://dx.doi.org/10.1016/j.marsys.2016.12.004