Geir Ottersen

Senior Scientist (employed by IMR)
Image of Geir Ottersen
Phone 410 47 374
Mobile phone 41047374 41047374
Room 3319
Username
Visiting address Kristine Bonnevies hus Blindernveien 31 0371 Oslo
Postal address Postboks 1066 Blindern 0316 OSLO

Background

Most of my work is centred around modelling towards understanding the population dynamics and ecology of the large, commercially important fish stocks in the North, Norwegian and Barents Seas. I have a formal background in oceanography and employ that to study the effects of climate fluctuations on fish populations and marine ecology more generally. One of my main tasks recently has been to be a lead author of the IPCC Special report on ocean and the cryosphere.

Chairing the ICES Cod and Climate Change working group and serving on the international steering committee of the GLOBEC programme (www.globec.org) broadened my scope beyond Norwegian waters, while getting the opportunity to contribute to cross-cutting review articles and books has opened my eyes to the importance of comparative studies, also between aquatic and terrestrial systems.

Although I have been working at CEES for many years I am employed by the Institute of Marine Research (IMR) as a Principal scientist. Being employed by IMR naturally leads to applied management oriented work.

 

Scientific pledge

I have read and promise to adhere to the NENT.

Projects

Co-lead Barents-RISK (Assessing risks of cumulative impacts on the Barents Sea ecosystem and its services; Research Council of Norway, 20 million NOK 2018-2022).

Lead CodDINA (Cod: DIet and food web dyNAmics; Research Council of Norway, 7.5 million NOK 2016-2019).


WP lead “Applications of iAOS towards Stakeholders” in the EC H2020 project Intaros – (Integrated Arctic observation system, European Commission H2020 BG-09 RIA. 15 M Euro over 5 years, WP6 ca 3.5 M Euro).

Selected Publications

Articles in Journals

  • Stenseth NC, Mysterud A, Ottersen G, Hurrell JW, Chan K-S, Lima M. 2002. Ecological effects of climate fluctuations. Science 297 1292-1296.
  • Ottersen, G., Planque, B., Belgrano, A., Post, E., Reid, P.C., and Stenseth, N.C. 2001. Ecological effects of the North Atlantic Oscillation. Oecologia 128 (1): 1-14.
  • Stenseth NC, Ottersen G, Hurrell JW, Mysterud A, Lima M, Chan K-S, Yoccoz NG, Ådlandsvik B (2003) Studying climate effects on ecology through the use of climate indices: the North Atlantic Oscillation, El Niño Southern Oscillation and beyond. Proceedings of the Royal Society of London (Series B) 270:2087-2096
  • Durant, J., Hjermann, D., Ottersen, G. and Stenseth, N.C. 2007. Climate and the match or mismatch between predator requirements and resource availability. Clim. Res. 33, 271-283.
  • Ottersen G, Hjermann D, Stenseth NC. 2006. Changes in spawning stock structure strengthens the link between climate and recruitment in a heavily fished cod stock. Fish. Oceanogr. 15 (3): 230-243.
  • Ottersen G and Melbourne-Thomas J. 2019. Time to look forward to adapt to ocean warming. PNAS. 10.1073/pnas.1912639116
  • Holt, R.E., Bogstad, B., Durant, J.M., Dolgov, A.V., Ottersen, G. 2019. Barents Sea cod (Gadus morhua) diet composition: long-term interannual, seasonal, and ontogenetic patterns. ICES Journal of Marine Science.

  • Skern-Mauritzen, M., Ottersen, G., Handegard, N.O., Huse, G., Dingsør, G.E., Stenseth, N.C., Kjesbu, O.S. 2016. Ecosystem processes are rarely included in tactical fisheries management. Fish and Fisheries, 165-175.

Books

Stenseth NC, Ottersen G, Hurrell JW, Belgrano A, Editors. 2004. Marine Ecosystems and Climate Variation: The North Atlantic, Vol. Oxford University Press, Oxford, UK. 252+14 p.

Hurrell JW, Kushnir Y, Ottersen G, Visbeck M, Editors. 2003. The North Atlantic Oscillation: Climatic Significance and Environmental Impact. Washington D.C.: American Geophysical Union. pp. 279+vii.

Tags: Atlantic cod, Fisheries oceanography, climate change, climate change ecology, Climate effects, Ecological regime shifts, Marine ecology, Marine spatial planning, Oceanography, Pelagic ecology, Population dynamics, Population ecology, Nordic, USA, Russia

Publications

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  • Ottersen, Geir (2021). Presentasjon av prosjektet CoDINA - Cod DIet and food web dyNAmics .
  • Ottersen, Geir (2021). Oseanografiske katastrofer.
  • Ottersen, Geir; Sejr, Mikael K; Kruschke, Tim; van der Meeren, Gro Ingleid; Sagen, Hanne & Solgaard, Anne [Show all 9 contributors for this article] (2021). Demonstrating applications of an Integrated Arctic Observing System towards selected, diverse stakeholder groups.
  • Sandven, Stein; Sagen, Hanne; Pirazzini, Roberta; Beszczynska-Möller, Agnieszka; Voss, Peter & Danielsen, Finn [Show all 14 contributors for this article] (2021). Building integrated Arctic observing systems from in situ platforms.
  • Ottersen, Geir (2021). Arctic marine ecosystems: impacts of climate change.
  • Tjiputra, Jerry; Myksvoll, Mari; Sandø, Anne Britt; Samuelsen, Annette; Yumruktepe, Caglar & Li, Camille Chia-Mau [Show all 8 contributors for this article] (2021). Key physical processes for evaluating climate impacts on subarctic primary production.
  • Mikkelsen, Nina; Skern-Mauritzen, Mette; Ottersen, Geir; Armstrong, Claire W.; Arneberg, Per & Fauchald, Per [Show all 9 contributors for this article] (2020). Defining ecosystem vulnerabilities and risks of cumulative impacts in a unifying Ecosystem Risk Assessment Framework.
  • Ottersen, Geir (2020). Impacts of climate change on marine ecosystems Lecture at BIO 4331, IBV, University of Oslo.
  • Ottersen, Geir (2020). Klimaendringer og effekter på marine økosystemer og miljøverdier.
  • Ottersen, Geir (2020). Ny havrapport fra FN’s klimapanel: Klimaendringer og konsekvenser for fisk, fiskerier og havbruk .
  • Ottersen, Geir (2020). Hovedfunn fra FNs klimapanel sin spesialrapport på hav og islagte områder.
  • Kjesbu, Olav Sigurd; Sandø, Anne Britt; Strand, Espen; Myksvoll, Mari Skuggedal; Ottersen, Geir & Vikebø, Frode Bendiksen [Show all 11 contributors for this article] (2019). Climate vulnerability assessments ‒ a mechanistic approach.
  • Ottersen, Geir (2019). Effekter av industrielle fiskerier og klimavariabilitet på marine økosystemer og fiskebestander.
  • Stige, Leif Christian; Langangen, Øystein; Durant, Joel Marcel; Knutsen, Halvor; Olsen, Esben Moland & Ottersen, Geir (2019). Forskning på torsk. Biolog. ISSN 0801-0722. 37(2), p. 46–49.
  • Ottersen, Geir & Sejr, Mikael K. (2019). WP6 Applications of iAOS towards stakeholders: general update and workplan for each task .
  • Ottersen, Geir (2019). Bio4150 Lecture on sea fisheries and marine ecosystem management.
  • Ottersen, Geir & Melbourne-Thomas, Jessica (2019). Time to look forward to adapt to ocean warming. Proceedings of the National Academy of Sciences of the United States of America. ISSN 0027-8424. 116(37), p. 18157–18158. doi: 10.1073/pnas.1912639116
  • Lorentzen, Erlend Astad & Ottersen, Geir (2019). Roper varsko om varmere hav. [Internet]. https://www.kystogfjord.no/.
  • Lorentzen, Erlend Astad & Ottersen, Geir (2019). Roper varsku om varmare hav. [Internet]. www.forskning.no.
  • Ottersen, Geir & Torsvik, Nils (2019). Nordsjøen tømmes for fisk - Barentshavet fylles av torsk. [Newspaper]. Fiskeribladet.
  • Ottersen, Geir (2019). Rising temperatures and melting ice: Challenges and possible responses to changes in Arctic marine ecosystems and fisheries.
  • Ottersen, Geir & Benard, Sandrine (2019). IPCC's key findings on oceans and climate. What to expect from the coming report on ocean and cryosphere? Preliminary views.
  • Ottersen, Geir (2019). FNs klimapanels spesialrapport om hav og is - Hovedfunn hav .
  • Ottersen, Geir (2019). Breytt útbreiðsla getur torveldað stjórnun (Endret utbredelse kan forstyrre forvaltningen). [Newspaper]. Morgunbladid.
  • Ottersen, Geir (2019). Hovedfunn fra FNs klimapanels spesialrapport om hav og islagte områder.
  • Ottersen, Geir & Haugsbø, Håkon (2019). I desse dagar (om kysttorsken). [Radio]. NRK Radio P1.
  • Ottersen, Geir (2019). IPCC Special Report on the Ocean and Cryosphere in a Changing Climate: Main findings, present impacts and future risks .
  • Andersson, Atle & Ottersen, Geir (2019). Forsker: – Urovekkende stigning på havnivået. [Newspaper]. Bergens Tidende.
  • Andersson, Atle & Ottersen, Geir (2019). Forsker-alarm: – Urovekkende havnivåstigning. [Internet]. sysla.no.
  • Strandberg, Torgeir & Ottersen, Geir (2019). Dette skremte nordmannen som var med på å skrive FNs klimarapport. [Newspaper]. aftenposten.no.
  • Ottersen, Geir (2019). Intervju om FNs Klimarapport på hav og islagte områder. [TV]. NRK1 Dagsrevyen.
  • Ottersen, Geir (2019). IPCC SROCC: Havet på vei inn i en ny tilstand.
  • Rogne, Sissel; Haugan, Peter M.; Ottersen, Geir & Vikebø, Frode Bendiksen (2019). Informasjon til HKH Kronprins Haakon om klimaendringer og effekter av disse.
  • Stige, Leif Christian; Rogers, Lauren; Neuheimer, Anna B.; Hunsicker, Mary E.; Yaragina, Natalia A. & Ottersen, Geir [Show all 9 contributors for this article] (2019). Density- and size-dependent mortality in fish early life stages.
  • Ottersen, Geir & Lorentzen, Erlend Astad (2019). Ropar varsku om varmare hav. [Internet]. https://www.hi.no/.
  • Kjesbu, Olav Sigurd; Sandø, Anne Britt; Myksvoll, Mari Skuggedal; Ottersen, Geir; Vikebø, Frode Bendiksen & Skogen, Morten D. [Show all 10 contributors for this article] (2018). Climate vulnerability of marine fish, response traits and mechanisms.
  • Kjesbu, Olav Sigurd; Sandø, Anne Britt; Myksvoll, Mari Skuggedal; Vikebø, Frode Bendiksen; Ottersen, Geir & Allan, Bridie A. [Show all 10 contributors for this article] (2018). Mechanisms behind changes in Northeast Atlantic cod stocks during climate warming .
  • Ottersen, Geir (2018). Klimaendringer, klimavariabilitet og effecter på marine økosystemer. Erfaringer fra FNs klimapanel og noen eksempler fra våre havområder.
  • Ottersen, Geir; Børsheim, Knut Yngve & Bergh, Øivind (2018). Klimaforskning i fare. Aftenposten (morgenutg. : trykt utg.). ISSN 0804-3116. p. 11–11.
  • Ottersen, Geir (2018). Skrei - en fiskeribiolog forteller.
  • Ottersen, Geir (2018). Can spawning stock size structure help towards explaining offspring survival and sensitivity to climate in the Barents Sea cod stock?
  • Ottersen, Geir (2018). Marine ecosystems – climate effects and management.
  • Ottersen, Geir (2018). Sea fisheries and marine ecosystem management.
  • Ottersen, Geir & Sejr, Mikael Kristian (2018). WP6 - Demonstrate the performance of the IAOS towards stakeholders.
  • Ottersen, Geir (2018). Klimaeffekter på marine økosystemer: Erfaringer fra FNs klimapanel og noen eksempler fra våre havområder.
  • Johannesen, Edda; Dolgov, Andrey V. & Ottersen, Geir (2018). The role of cod in the decline in arctic fishes in the Barents sea. Full text in Research Archive
  • Planque, Benjamin; Mullon, Christian; Arneberg, Per; Eide, Arne; Fromentin, Jean-Marc & Heymans, S [Show all 14 contributors for this article] (2017). Exploring the future of the Barents Sea social-ecological system.
  • Planque, Benjamin; Mullon, Christian; Arneberg, Per; Eide, Arne; Fromentin, Jean-Marc & Heymans, Johanna J. [Show all 14 contributors for this article] (2017). A MULTIPLE-PERSPECTIVE SCENARIO METHOD TO EXPLORE THE FUTURE OF MARINE SOCIAL-ECOLOGICAL SYSTEMS. AN APPLICATION TO THE BARENTS SEA .
  • Ottersen, Geir (2017). Stort EU prosjekt skal drives fra Bergen. [Internet]. www.imr.no.
  • Planque, Benjamin; Mullon, Christian; Arneberg, Per; Eide, Arne; Fromentin, Jean-Marc & Heymans, Sheila [Show all 13 contributors for this article] (2017). Barents Sea 2050 - uncertain future ahead.
  • Holt, Rebecca Emma; Durant, Joel Marcel; Ottersen, Geir & Bogstad, Bjarte (2017). Cod diet and food web dynamics: What can we learn from the past?
  • Ottersen, Geir & Sandven, Stein (2017). INTAROS – Integrated Arctic Observing System A EC H2020 Research and Innovation Action funded for 2016-2021. Marine ecosystem perspective for the ESSAS 2017 OSM.
  • Ottersen, Geir (2017). Torsken.
  • Ottersen, Geir (2017). Mannen og Havet. [Newspaper]. Bladet Tysjnes.
  • Ottersen, Geir (2017). Lecture on Sea fisheries and marine ecosystem management.
  • Eide, Wenche; Carina, E.; Keskitalo, H.; Kovacs, Kit M.; Ingvalsen, Randi & Petrov, Andrey N. [Show all 51 contributors for this article] (2017). Status of the natural and human environments , AMAP 2017 Adaptation Actions for a Changing Arctic: Perspectives from the Barents Area . Arctic Monitoring and Assessment Programme (AMAP). ISSN 9788279711025. p. 5–46.
  • Stige, Leif Christian; Ottersen, Geir; Yaragina, Natalia A.; Stenseth, Nils Chr. & Langangen, Øystein (2017). Effect of a fish stock’s demographic structure on offspring exposure to possible oil spills.
  • Ottersen, Geir & Sandven, Stein (2017). Integrated Arctic Observation System A Research and Innovation Action funded by EC H2020-BG-09 for 2016-2021. Marine ecosystem perspective for the ESSAS 2017 OSM.
  • Ottersen, Geir (2017). Et hav av muligheter.
  • Ottersen, Geir (2017). Observing systems for fish resources and marine ecosystems and some oceanography.
  • Ottersen, Geir (2017). Marine ecosystems - climate effects and management.
  • Nybø, Signe; Pedersen, Bård; Skarpaas, Olav; Aslaksen, Iulie; Bjerke, Jarle W. & Certain, Gregoire [Show all 22 contributors for this article] (2016). Ecological framework. In Pedersen, Bård; Nybø, Signe & Sæther, Stein Are (Ed.), Nature Index for Norway 2015. Ecological framework, computational methods, database and information systems. Norsk institutt for naturforskning. ISSN 978-82-426-2858-9. p. 11–20.
  • Nybø, Signe; Pedersen, Bård; Skarpaas, Olav; Aslaksen, Iulie; Bjerke, Jarle W. & Certain, Gregoire [Show all 22 contributors for this article] (2016). Description of the major ecosystems and their reference states. In Pedersen, Bård; Nybø, Signe & Sæther, Stein Are (Ed.), Nature Index for Norway 2015. Ecological framework, computational methods, database and information systems. Norsk institutt for naturforskning. ISSN 978-82-426-2858-9. p. 21–26.
  • Ottersen, Geir (2016). Fisk og Fiske. Foredrag for klasse 4c ved Eikeli Barneskole.
  • Ottersen, Geir (2016). Innspill til Stortingsmelding om oppdatering av forvaltningsplanen for Norskehavet.
  • Ottersen, Geir (2016). Environmental Impacts on the Marine Ecosystem of the North Sea, highlights from a new book chapter.
  • Ottersen, Geir (2016). En tøff start på Barentshavstorskens liv. Naturen. ISSN 0028-0887. 140(6), p. 261–268. doi: 10.18261/issn.1504-3118-2016-06-04
  • Ottersen, Geir (2016). Havforskarar vitjar Haaheim og Alsaker. [Newspaper]. Bladet Tysnes.
  • Ottersen, Geir; van der Meeren, Gro Ingleid & Arneberg, Per (2016). The Norwegian Ecosystem-Based Management plan for the Barents Sea: Achievements and Challenges .
  • Ottersen, Geir (2016). Havforskarar fekk omvising på Alsaker Fjordbruk. [Newspaper]. Bladet Tysnes.
  • van der Meeren, Gro Ingleid; Storeng, Anne Britt; von Quillfeldt, Cecilie; Ottersen, Geir & Arneberg, Per (2016). The Norwegian Ecosystem-Based Management plan for the Barents Sea; Strengths, Flaws and Further Developments.
  • Lien, Vidar Surén; Ingvaldsen, Randi Brunvær & Ottersen, Geir (2016). Presentation of the projects SI_ARCTIC The Arctic Ocean Ecosystem and INTAROS.
  • Ottersen, Geir (2016). Marine ecosystems climate effects and management. .
  • Ottersen, Geir (2016). Sea fisheries and the ecosystem approach to marine management. Forelesning Bio4150/9150.
  • Durant, Joel Marcel & Ottersen, Geir (2016). Effect of juvenile distribution and environment on the Northeast Arctic haddock .
  • Nybø, Signe; Pedersen, Bård; Skarpaas, Olav; Aslaksen, Iulie; Bjerke, Jarle W. & Certain, Gregoire [Show all 22 contributors for this article] (2015). Økologisk rammeverk. In Pedersen, Bård & Nybø, Signe (Ed.), Naturindeks for Norge. 2015. Økologisk rammeverk, beregningsmetoder, datalagring og nettbasert formidling. Norsk institutt for naturforskning. ISSN 978-82-426-2752-0. p. 11–20.
  • Nybø, Signe; Pedersen, Bård; Skarpaas, Olav; Aslaksen, Iulie; Bjerke, Jarle W. & Certain, Gregoire [Show all 22 contributors for this article] (2015). Beskrivelse av hoved-økosystemene og deres referansetilstand. In Pedersen, Bård & Nybø, Signe (Ed.), Naturindeks for Norge. 2015. Økologisk rammeverk, beregningsmetoder, datalagring og nettbasert formidling. Norsk institutt for naturforskning. ISSN 978-82-426-2752-0. p. 21–26.
  • Ottersen, Geir (2015). Havforskning fra rommet.
  • Ottersen, Geir (2015). Integrert økosystemassessment en sentral del av helhetlig økosystembasert forvaltning Hva er det og hvilke metoder brukes.
  • Hamre, Torill; Sagen, Hanne; Sandven, Stein; Danielsen, Finn; Ottersen, Geir & Beszczynska-Möller, Agnieszka [Show all 10 contributors for this article] (2021). Data Management Plan V2. INTAROS project.
  • Jelmert, Anders; Sandø, Anne Britt; Frie, Anne Kirstine Højholt; Bogstad, Bjarte; Grøsvik, Bjørn Einar & Eriksen, Elena [Show all 50 contributors for this article] (2020). Status for miljøet i Barentshavet: Rapport fra Overvåkingsgruppen 2020. Havforskningsinstituttet. ISSN 1893-4536. Full text in Research Archive
  • Hamre, Torill; Sagen, Hanne; Sandven, Stein; Danielsen, Finn; Ottersen, Geir & Beszczynska-Möller, Agnieszka [Show all 9 contributors for this article] (2019). Deliverable 1.6. Data Governance Framework (including updated Data Management Plan). INTAROS project.
  • Buch, Erik; Sandven, Stein; Danielsen, Finn; Iversen, Lisbeth; Poulsen, Mikael Køie & Ottersen, Geir (2019). Report on stakeholder interaction in year 2 and 3. INTAROS project.
  • Dwyer, Edward; Higgins, Ruth M.; Sa, Sandra; Zona, Donatella; Buch, Erik & Pirazzini, Roberta [Show all 14 contributors for this article] (2017). Deliverable 1.3 Engagement Strategy. INTAROS project.
  • van der Meeren, Gro Ingleid; Arneberg, Per; Ottersen, Geir; von Quillfeldt, Cecilie & Storeng, Anne Britt (2015). Erfaringer fra et tiår med forvaltningsplanarbeid i Norge og utfordringer fremover. RAPPORT FRA SEMINAR OM FORVALTNINGSPLANARBEIDET, 28.–29. JANUAR 2015. Havforskningsinstituttet.
  • Ottersen, Geir (2015). Metodikk for vurdering av samlet påvirkning og miljø-konsekvenser for marine økosystemer – en litteraturstudie. Miljødirektoratet.

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Published May 26, 2011 9:47 PM - Last modified Oct. 25, 2021 1:08 PM