Tor Knutsen

Forsker
Telefon: 55238576
Avdeling: Plankton 2160

Arbeider med

  1. Barents Sea Zooplankton Monitoring and Management
  2. Development and integration of zooplankton sampling methodology and instrumentation in the field and laboratory (Messor, MUST, Macroplankton trawl, Multisampler, Zooscan)
  3. Zooplankton acoustics
  4. Krill in the Barents Sea, Norwegian Sea, Antarctic and Norwegian fjords
  5. Towed integrated measurement platforms (MESSOR, MUST)
  6. Postprocessing of data from the Plankton Group's towed vehichles holding various instruments like the Optical Plankton Counter (OPC), Fluorometers, CTD, light sensors, the SIMRAD 38, 70, 120, 200 and 333 kHz acoustic sensors, Multinet plankton sampler and the Laser Optical Plankton Counter (LOPC).

Curriculum Vitae

Cand. real. thesis (In Norwegian):
Knutsen, T. (1985) Populasjonsendringer hos lyskrepsen Meganyctiphanes norvegica (M. Sars) i Korsjorden sett i forhold til hydrografi, strømforhold og populasjoner i omkringliggende områder. Pp. 1-233.

In English:
Population changes of the krill Meganyctiphanes norvegica (M. Sars) in Korsfjorden with respect to hydrography, current conditions and populations in adjacent areas. Pp. 1-233.


Publication

Knutsen, T., Melle W., Mjanger, M., Strand E., Fuglestad, A-L., Broms C., Bagøien E., Fitje H., Ørjansen O.,  Vedeler T. (2013). MESSOR – A towed underwater vehicle for quantifying and describing the distribution of pelagic organisms and their physical environment. OCEANS’ 13 MTS/IEEE Bergen, Norway, June 10-14. Pp. 1-12. ISBN 978-1-4799-0000-8. DOI 10.1109/OCEANS-Bergen.2013.6608177.

Skjoldal, H.R., Wiebe P.H., Postel L., Knutsen T., Kaartvedt S. and Sameoto D. (2013). Intercomparison of zooplankton (net) sampling systems: Results from the ICES/GLOBEC sea-going workshop. Progress in Oceanography, 108:1-42. doi.org/10.1016/j.pocean.2012.10.006.

Michalsen, K., Dalpadado, P., Eriksen, E., Gjøsæter, H., Ingvaldsen, R., Johannesen, E., Lindal Jørgensen, L., Knutsen, T., Skern-Mauritzen M., Prozorkevich, D.D. (2013) Marine living resources of the Barents Sea - ecosystem understanding and monitoring in a climate change perspective. Marine Biology Research, 9 (9):932-947, http://dx.doi.org/10.1080/17451000.2013.775459.

Calise, L., and Knutsen, T. (2012). Multifrequency target strength of northern krill (Meganyctiphanes norvegica) swimming horizontally. ICES Journal of Marine Science, 69(1): 119–130. doi:10.1093/icesjms/fsr170.

Dalpadado, P., Ingvaldsen, R. B., Stige, L.C., Bogstad, B., Knutsen, T., Ottersen, G., and Ellertsen, B. (2012) Climate effects on Barents Sea ecosystem dynamics. ICES Journal of Marine Science, 69(7), 1303–1316. doi:10.1093/icesjms/fss063.

Johannesen, E., Ingvaldsen, R. B., Bogstad, B., Dalpadado, P., Eriksen, E., Gjøsæter, H., Knutsen, T., Skern-Mauritzen, M., and Stiansen, J. E. Changes in Barents Sea ecosystem state, 1970–2009: climate fluctuations, human impact, and trophic interactions (2012). ICES Journal of Marine Science, 69(5), 880–889. doi:10.1093/icesjms/fss046.

Krafft, B.A., Skaret, G., Knutsen, T., Melle, W., Klevjer, T., H. Søiland (2012) Antarctic krill swarm characteristics in the Southeast Atlantic sector of the Southern Ocean. Mar. Ecol. Prog. Ser., 465: 69–83, doi: 10.3354/meps09876.

Orlova, E.L., Dalpadado, P., Knutsen, T., Nesterova, V.N., and Prokopchuk, I.P. (2011). Zooplankton. In The Barents Sea. Ecosystem, resources, management. Half a century of Russian-Norwegian cooperation, pp. 91-120. Ed. by T. Jakobsen and V.K. Ozhigin, Tapir Academic Press, Trondheim.

Krafft, B.A., W. Melle, T. Knutsen, E. Bagøien, C. Broms, B. Ellertsen, V. Siegel (2010) Distribution and demography of Antarctic krill in the Southeast Atlantic sector of the Southern Ocean during the austral summer 2008, Polar Biology, 33: 957-968.

Korneliussen, R.J., Heggelund, Y., Eliassen, I.K., Øye, O.K., Knutsen, T., and Dalen, J., (2009). Combining multibeam-sonar and multi-frequency echo sounder data: examples of the analysis and imaging of large euphausiid schools. ICES Journal of Marine Science, 66: 991–997.

Zedel, L., Patro, R., and Knutsen, T. (2005). Fish behaviour and orientation-dependent
backscatter in acoustic Doppler profiler data. ICES Journal of Marine Science, 62:
1191-1201.

Hassel, A, Knutsen, T., Dalen, J., Skaar, K., Løkkeborg, S., Misund, O.A., Østensen, Ø., Fonn, M., Kyrkjebø Haugland, E. (2004). Influence of seismic shooting on the lesser sandeel (Ammodytes marinus). ICES/FAO Symposium on "Fish Behaviour in Exploited Ecosystems", 23-26 June 2003 Bergen, Norway. ICES Journal of Marine Science, 61:1165-1173.

Zedel, L., Knutsen T. and Patro R. (2003). Acoustic Doppler current profiler observations of herring movement. ICES Journal of Marine Science, 60:846-859.

Knutsen, T., W. Melle and L. Calise (2001). Determining the mass density of marine copepods and their eggs with a critical focus on some of the previously used methods. J. Plankton Research, 23: 859-873.

Kaartvedt, S., Knutsen, T. and J.C. Holst (1998). Schooling of the vertically migrating mesopelagic fish Maurolicus muelleri in light summer nights. Mar. Ecol. Prog. Ser. 170: 287-290.

Torgersen, T., S. Kaartvedt, W. Melle and T. Knutsen (1997). Large scale distribution of acoustical scattering layers at the continental shelf and the eastern Norwegian Sea.
Sarsia 82:87-96.

Kaartvedt, S., W. Melle, T. Knutsen, H.R. Skjoldal (1996). Vertical distribution of fish and krill beneath water of varying optical properties. Mar. Ecol. Prog. Ser. 136: 51-58.

Gallego, A., L.H. Cargill, M.R. Heath, S.J. Hay, T. Knutsen (1995). An Assessment of the Immediate Effect on the Braer Oil-Spill on the Growth of Herring Larvae using Otolith Microstructure Analysis. Marine Pollution Bulletin, 30(8): 536-542.

External and internal reports

Knutsen, T. og Dalpadado, P. (2011). Sekundærproduksjon (Barentshavet). Pp. 86-88. I Agnalt A.-L., Fossum P., Hauge M., Mangor-Jensen A., Ottersen G., Røttingen I.,
Sundet J.H. og Sunnset B.H. (red.). Havforskningsrapporten 2011. Fisken og havet, særnr 1-2011. Havforskningsinstituttet, Bergen.

Knutsen, T. og Dalpadado, P. (2010). Kap. 4.4.1 Dyrepanktonbiomasse. Pp. 19-20. I Sunnanå K., Fossheim M. og Daae Olseng, C. (Red.). Forvaltningsplan Barentshavet – rapport fra overvåkingsgruppen 2010. Fisken og havet, særnr. 1b–2010.

Dalpadado, P. og Knutsen, T.. (2010). Kap. 4.4.2 Artssammensetning. Pp. 20-21. I Sunnanå K., Fossheim M. og Daae Olseng, C. (Red.). Forvaltningsplan Barentshavet – rapport fra overvåkingsgruppen 2010. Fisken og havet, særnr. 1b–2010.

Knutsen, T. og Dalpadado, P. (2010). Sekundærproduksjon (Barentshavet). Pp. 26-27. I Gjøsæter, H., Haug, T., Hauge, M., Karlsen, Ø., Knutsen, J.A., Røttingen, I., Skilbrei og Hoddevik Sunnset, B. (red.). Havforskningsrapporten 2010. Fisken og havet, særnr 1-2010. Havforskningsinstituttet, Bergen.

Knutsen, T. og Dalpadado, P. (2009). Sekundærproduksjon i Barentshavet (Dyreplankton). Pp. 12-16. I Gjøsæter, H., Dommasnes, A., Falkenhaug, T., Hauge, M., Johannesen, E., Olsen, E. og Skagseth, Ø. (red.). Havets ressurser og miljø 2009. Fisken og havet, særnr 1-2009. Havforskningsinstituttet, Bergen.

Knutsen, T. og Dalpadado, P. (2009). Kap. 4.4.1 Dyrepanktonbiomasse. Pp. 38-39. I Sunnanå K., Fossheim M. og van der Meeren G. I. (Red.). Forvaltningsplan Barentshavet – rapport fra overvåkingsgruppen 2009. Fisken og havet, særnr. 1b–2009.

Dalpadado, P. og Knutsen, T.. (2009). Kap. 4.4.2 Artssammensetning. Pp. 40. I Sunnanå K., Fossheim M. og van der Meeren G. I. (Red.). Forvaltningsplan Barentshavet – rapport fra overvåkingsgruppen 2009. Fisken og havet, særnr. 1b–2009.

Melle W., Dalpadado, P., Ellertsen B. og Knutsen T. (2009). Kunnskapsstatus: raudåte, krill og andre dyreplankton i norske farvann. Notat til Fiskeri og kystdepartementet, 13. mars 2009. Pp. 1-7.

Orlova, E., Knutsen, T., Berchenko, I., Dalpadado, P., Falk-Petersen, S., Prokopchuk, I., Yurko, A., Nesterova, V. (2009). Chap. 2.4.3. Zooplankton, pp. 39-43. In: Stiansen, J.E., Korneev O., Titov, O., Arneberg, P. (Eds.), Filin, A., Hansen, J.R., Høines, Å., Marasaev, S. (Co-eds.) 2009. Joint Norwegian-Russian environmental status 2008. Report on the Barents Sea Ecosystem. Part II – Complete report. IMR/PINRO Joint Report Series 2009(3). Institute of Marine Research, Bergen, Norway. ISSN 1502-8828. 375 pp.

Orlova, E., Knutsen, T., Dalpadado, P., Berchenko, I., Prokopchuk, I., Yurko, A., Nesterova, V., Yurko, O., (2009). Chap. 4.3.2 Zooplankton, pp. 183-194. In: Stiansen, J.E., Korneev O., Titov, O., Arneberg, P. (Eds.), Filin, A., Hansen, J.R., Høines, Å., Marasaev, S. (Co-eds.) 2009. Joint Norwegian-Russian environmental status 2008. Report on the Barents Sea Ecosystem. Part II – Complete report. IMR/PINRO Joint Report Series 2009(3). Institute of Marine Research, Bergen, Norway. ISSN 1502-8828. 375 pp.

Knutsen, T., and P. Dalpadado (2008). Kap. 4.4.1. Dyreplanktonbiomasse. I Knut Sunnanå og Maria Fosheim (Eds). Forvaltningsplan Barentshavet - rapport fra overvåkingsgruppen 2008.. Fisken og havet, særnr 1b-2008. Pp. 31-32. Havforskningsinstituttet, Bergen.

Knutsen, T., and P. Dalpadado (2008). Kap. 4.4.2. Dyreplankton: Artssammensetning. I Knut Sunnanå og Maria Fosheim (Eds). Forvaltningsplan Barentshavet - rapport fra overvåkingsgruppen 2008. Fisken og havet, særnr 1b-2008. Pp. 33. Havforskningsinstituttet, Bergen.

Knutsen, T. og Dalpadado, P. (2008). Sekundærproduksjon i Barentshavet (Dyreplankton). Pp. 34-36. I Gjøsæter, H., Huse, G., Robberstad, Y. og Skogen, M. (red.). Havets ressurser og miljø 2008. Fisken og havet, særnummer 1-2008. Havforskningsinstituttet, Bergen.

Iversen, S.A., Melle, W., Bagøien, E, Chu, D., Edvardsen, B., Ellertsen, B., Grønningsæter, E., Jørstad, K., Karslbakk, E., Klevjer, T., Knutsen, T., Korneliussen, R., Kowall, H., Krafft, B, Kaartvedt, S., Lona, P.B., Murray, S., Naustvoll,L., Nøttestad, L., Ostrowski, M., Siegel, V., Skagseth, Ø., Skaret, G., Søiland,H. (2008). The Antarctic Krill and Ecosystem Survey with R/V “G.O. Sars in 2008. CCAMLR WG-EMM-08/28, pp. 1-21.

Skaret, G., Iversen, S.A., Knutsen, T., Korneliussen, R.J., Ona, E., Pedersen, R., Totland, A., Torkelsen, T., Zhao, X. (2008). In situ measurements of tilt angle distribution and target strength of Antarctic krill (Euphausia superba). CCAMLR WG-EMM-08/29, pp. 1-10.

Knutsen, T., Dalpadado, P. and Orlova, E. (2008). Chap. 2.4.2. Zooplankton, pp. 22-24. In: Stiansen, J.E. and A.A. Filin (Eds). Joint PINRO/IMR report on the state of the Barents Sea ecosystem in 2007, with expected situation and considerations for management. IMR/PINRO Joint Report Series 2008(1). Institute of Marine Research, Bergen, Norway. ISSN 1502-8828. 185 pp.

Stiansen J. E., A. A. Filin, A.V. Dolgov, R. Ingvaldsen, L.L. Jørgensen, A.L. Karsakov, T. Knutsen, E.L. Orlova, A.P. Pedchenko and G.B. Rudneva (2008). Chap. 3. Monitoring of the ecosystem, pp. 63-74. In: Stiansen, J.E. and A.A. Filin (Eds). Joint PINRO/IMR report on the state of the Barents Sea ecosystem in 2007, with expected situation and considerations for management. IMR/PINRO Joint Report Series 2008(1). Institute of Marine Research, Bergen, Norway. ISSN 1502-8828. 185 pp.

Høines Å., A. Filin, T. Knutsen and J.E. Stiansen (2008). Chap. 4.1. Overview of current state, pp. 75-76. In: Stiansen, J.E. and A.A. Filin (Eds). Joint PINRO/IMR report on the state of the Barents Sea ecosystem in 2007, with expected situation and considerations for management. IMR/PINRO Joint Report Series 2008(1). Institute of Marine Research, Bergen, Norway. ISSN 1502-8828. 185 pp.

Knutsen, T., Dalpadado, P. and Orlova, E. and Yurko A.S. (2008). Chap. 4.4 Zooplankton - Current and Expected situation of the ecosystem, pp. 90-101. In: Stiansen, J.E. and A.A. Filin (Eds). Joint PINRO/IMR report on the state of the Barents Sea ecosystem in 2007, with expected situation and considerations for management. IMR/PINRO Joint Report Series 2008(1). Institute of Marine Research, Bergen, Norway. ISSN 1502-8828. 185 pp.

Knutsen, T. og Skaret, G. (2008). Rappport fra CCAMLRs arbeidsgruppe WG-EMM (Working Group for Ecosystem Monitoring and Management), WG-SAM og TASO i St. Petersburg, Russland 14 juli- 1 august 2008. Internt Notat, Havforskningsinstituttet. Pp. 1-25.

Knutsen, T., Dalpadado, P. og A. Hassel (2007). Sekundærproduksjon i Barentshavet (Dyreplankton). Pp. 32-35. I Skogen, M.,Gjøsæter, H., Thoresen, R. og Robberstad, Y. (Eds). Havets ressurser og miljø 2007. Fisken og havet, særnummer 1-2007. Havforskningsinstituttet, Bergen.

Knutsen, T., P. Dalpadado og A. Hassel (2007). Dyreplankton. P. 17. I Knut Sunnanå (Ed.). Forvaltningsplan Barentshavet - 1. rapport fra overvåkingsgruppen,. Fisken og havet, særnummer 1b-2007. Havforskningsinstituttet, Bergen.

Knutsen, T., Dalpadado, P. and Orlova, E. (2007). Chap. 2.4.2. Zooplankton-general description of the ecosystem. Pp. 21-22 In: Stiansen, J.E. and A.A. Filin (editors), 2007. Joint PINRO/IMR report on the state of the Barents Sea ecosystem 2006, with expected situation and considerations for management. IMR/PINRO Joint Report Series No. 2/2007. ISSN 1502-8828. 209 pp.

Knutsen, T., Dalpadado, P. and Orlova, E. (2007). Chap. 5.4. Zooplankton-Current and expected situation. Pp. 98-104 In: Stiansen, J.E. and A.A. Filin (editors), 2007. Joint PINRO/IMR report on the state of the Barents Sea ecosystem 2006, with expected situation and considerations for management. IMR/PINRO Joint Report Series No. 2/2007. ISSN 1502-8828. 209 pp.

Olsen, R.E., Knutsen, T. og Melle, W. (2006) Nye Marine Fôrressurser (NYMAR). Havforskningsinstituttet, Intern sluttrapport. Pp. 1-73.

Knutsen. T., Melle, W., Fuglestad, A-L., Mjanger, M. and Fitje, H. (2006). A towed underwater vehicle for the assessment of pelagic resources and environmental conditions. Scientific Committee on Ocean Research (SCOR Working Group 115), Mini Symposium on Standards for the Survey and Analysis of Plankton, Plymouth, England, 19-20 May 2006.

Melle, W., Abrahamsen, M., Valdemarsen, J.W., Ellertsen, B., Knutsen, T. (2006). Design and performance of a new macro-plankton trawl in combination with a multiple cod-end system. SCOR Working Group 115, Mini Symposium on Standards for the Survey and Analysis of Plankton. Plymouth, England. 19-20 May 2006.

Hooper, J., T. Knutsen, D. Agnew and S.A. Iversen (2006). Technical note on the sampling procedures of the Saga Sea. CCAMLR WG-EMM 2006, Walvis Bay, Namibia 17-28 July, WG-EMM-06/18, pp. 1-8.

Knutsen, T., W. Melle og Y. Robberstad (2006). Høsting av plankton – utfordringer for forskning og forvaltning. Havforskningstema, I-2006. Pp. 1-12.

Fernandes, P.G., Korneliussen, R.J., Lebourges-Dhaussy, A., Masse, J., Iglesias, M., Diner, N., Ona, E., Knutsen, T., Gajate, J., and Ponce, R. (2006). The SIMFAMI project: species identification methods from acoustic multifrequency information. Final report to the EC No. Q5RS-2001-02054. FRS Marine Laboratory Aberdeen, Aberdeen, UK.

Olsen, R.E., Moren, M., Knutsen, T. og G.-I. Hemre (2006). Havbruk. Kan plankton brukes som fiskefôr ? Pp. 94-96: I Svåsand, T., Boxaspen, K., Dahl, E., og Lindal Jørgensen, L. (Eds). Kyst og Havbruk 2006. Fisken og havet, særnummer 1-2006. Havforskningsinstituttet, Bergen.

Dalpadado, P., A. Hassel, T. Knutsen og M. Johannessen (2006). Økosystem Barentshavet. Sekundærproduksjon (dyreplankton). Pp. 31-35. I Iversen, S., Fossum, P., Gjøsæter, H., Skogen, M. og Thoresen, R. (Eds). Havets ressurser og miljø 2006. Fisken og havet, særnummer 1-2006. Havforskningsinstituttet, Bergen.

J.E. Stiansen, A. Aglen, B. Bogstad, P. Budgell, P. Dalpadado, A.V. Dolgov, A. Dommasnes, A.A. Filin, H.Gjøsæter, K.H. Hauge, Å. Høines, R. Ingvaldsen, E. Johannesen, L.L. Jørgensen, A.L. Karsakov, J. Klungsøyr, T. Knutsen, V. Lien, H. Loeng, S. Mehl, P. B. Mortensen, N.V. Muchina, V.N. Nesterova, E. Olsen, E.L. Orlova, V.K. Ozhigin, A.P. Pedchenko, E.K. Stenevik, M. Skogen, O.V. Titov, S. Tjelmeland, V.B. Zabavnikov, S.V. Ziryanov, N.G. Zhukova, N. Øien, S. Aanes (2006). Joint PINRO/IMR report on the state of the Barents Sea ecosystem 2005/2006. IMR/PINRO Joint Report Series,No. 3/2006. ISSN 1502-8828. 122 pp.

Knutsen, T. (2006). Rappport fra CCAMLRs arbeidsgruppe WG-EMM (Working Group on Ecosystem Monitoring and Management) i Walvis Bay, Namibia 17-28 juli 2006. Internt Notat, Havforskningsinstituttet. Pp. 1-11.

Calise L., Knutsen T. and Melle W. (2005) Direct acoustics measurements of free-swimming krill. Are we going in the right direction? ICES-Working Group on Fisheries Acoustics Science and Technology (WGFAST), Food and Agriculture Organization of the United Nations, Rome, Italy, 19-22 April 2005.

Fernandes P.G., R.J. Korneliussen, E. Ona, T. Knutsen, A. Lebourges, J. Masse, N. Diner, S. Cachera, M. Iglesias, J. Gajate, R. Ponce and S. Fassler (2005). The SIMFAMI project: using multifrequency fisheries echosounders to identify scattering categories. ICES-Working Group on Fisheries Acoustics Science and Technology, 2005 meeting, Food and Agriculture Organization of the United Nations, Rome, Italy, 19-22 April 2005.

Foote, K.G., P.R. Atkins, D.T. I. Francis, T. Knutsen (2005). Measuring echo spectra of marine organisms over a wide bandwidth. Proceedings of the International Conference “Underwater Acoustic Measurements: Technologies & Results” Heraklion, Crete, Greece, 28th June – 1st July 2005.

Knutsen, T., Dalpadado, P., Melle, W. (2005). The Barents Sea: Plankton Investigations in the context of an Ecosystem Approach to Monitoring and Management. Programmøte for Rådgivningsprogram Økosystem Norskehavet - Nordsjøen og Rådgivningsprogram Økosystem Barentshavet. Hotel Admiral, Bergen, 16. og 17. juni 2005.

Knutsen, T. (2005). Plankton. Toktdagbok. Økosystemtokt Barentshavet 2005.
https://www.hi.no/barentshavet/Toktdagbok/dagbok/toktdagbok5

Knutsen, T. and W. Melle (2004). Nye marine forressurser. Plankton som fôrressurs i oppdrettsnæringen. Tema Havbruk. Matre 26-27 februar, 2004. Foredrag. Oral.

Knutsen, T. (2004). Rappport fra CCAMLRs arbeidsgruppe WG-EMM (Working Group on Ecosystem Monitoring and Management) i Siena, Italia 12 – 24. juli 2004. Internt Notat, Havforskningsinstituttet. Pp. 1-7.

Hassel, A., Knutsen,T., Dalen, J., Skaar, K., Østensen, Ø., Haugland, E.K., Fonn, M., Høines, Å. and O.A. Misund (2003). Reaction of Sandeel to Seismic Shooting: A Field Experiment and Fishery Statistics Study. Fisken og Havet, Nummer 4, pp. 1-63.

Korneliussen, R. J., Skagen, D., Slotte, A., Knutsen, T. (2003). Survey report 2003112.
Survey report / Institute of Marine Research / ISSN 1503-6294/Nr. 15 – 2003. (15 pp). (In
Norwegian) (https://www.hi.no/__data/page/3991/Nr.15._Makrell.pdf)

Goncharov, S., Calise,L., Knutsen,T., van der Meeren, T., Angotzi, A.R., Bonanno, A., Patti, B., Mazzola, S., Buscaino,G. (2002). Target Strength and swimming behaviour of herring larvae studied by the Split Beam Tracking Method. ICES Symposium "Acoustics in Fisheries and Aquatic Ecology", 10-14 June 2002, Montpellier, France. Poster and Abstract.

Anon., (2002) ICES Cooperative Research Reports No. 250: ICES/GLOBEC Sea-going Workshop for Intercalibration of Plankton Samplers. 2002. Compiled and Edited by P.H. Wiebe, L. Postel, H.R. Skjoldal, T. Knutsen, M.D. Allison and R.C. Groman.

Johansen, Ø., Rye,H., Melbye,A.G., Jensen,H.V., Serigstad,B. and T. Knutsen (2001). Deep Spill JIP. Experimental Discharges of Gas and Oil at Helland-Hansen – June 2000, SINTEF Applied Chemistry, Technical Report. No. STF66 F01082, Pp.1-159.

Knutsen,T. and B. Serigstad, B. (2001). Potential implications on the pelagic fish and zooplankton community of artificially induced deep-water releases of oil and gas during DeepSpill_2000 – an innovative acoustic approach. Fisken og Havet, nr. 14. Pp. 1-37.

Atkins, P.R. Bongiovanni,C. Francis, D.T.I., Foote, K.G., Knutsen,T., Eriksen,P.K., Torp Larsen, M., Mortensen, T. (2001). Simple, nonoptimal, real-time classifiers for euphausiid and copepod numerical density estimation. 141st Meeting of the Acoustical Society of America, 4-8 June 2001, Chicago, Illinois [1aAO4]. Journal of Acoustical Society of America, Vol 109:2286 [Abstract].

Dalen, J., H.P. Knudsen, Knutsen,T., Vedeler, T., og Melle, W. (2000). Multibrukssystem for tauete farkoster og droppsonde – Forprosjekt. Evaluering av operasjoner, teknologi og systemer med utgangspunkt i måle- og observasjonsbehov. NFR-prosjekt 134283/122, Pp.1-49.

Foote, K.G., T. Knutsen, P.R. Atkins, C.C. Bongiovanni, D.T.I. Francis, P.K. Eriksen, M. Torp Larsen and T. Mortensen (2000). Broadband echo spectra from euphausiids and copepods. Joint 140th Meeting of the Acoustical Society of America/NOISE-CON 2000,
3-8 December 2000, Newport Beach, California. [1pAO5].

Johansen, Ø., Rye,H., Melbye,A.G., Jensen, H.V., Serigstad, B. and T. Knutsen (2000). Deep Spill JIP. Experimental Discharges of Gas and Oil at Helland-Hansen – June 2000. DRAFT Technical Report. Part I – Planning/Preparations/Logistics and Instrumentation. Pp. 1-39.

Johansen, Ø., Rye,H., Melbye,A.G., Jensen, H.V., Serigstad, B. and T. Knutsen (2000). Deep Spill JIP. Experimental Discharges of Gas and Oil at Helland-Hansen – June 2000. DRAFT Technical Report. Part II – Measurements and Observations. Pp. 1-62.

Knutsen, T., and Foote, K.G. (1999). Acoustic visualization and quantification of copepods and fish larvae in mesocosm experiments. Final report, NFR- project no. 113809/122. Institute of Marine Research, Bergen. 14 pp.

Knutsen,T. and Dalen, J. (1999). Measurement strategies, operation schemes and data visualization for a multi-frequency buoy acoustic plankton sensor. Interne notat nr. 8, 30 sider.

Atkins, P.R., C.C. Bongiovanni, P.K. Eriksen, K.G. Foote, D.T.I. Francis, T. Knutsen and T. Mortensen (1999). Acoustic discrimination of individual copepods and euphausiids. In : Final Scientific and Technical report, Project “BASS” Broadband Scattering Signatures of Fish and Zooplankton, Contract no. MAS3-CT95-0031, 29 August 1999. Pp. 1-8(10).

Knutsen, T. and Foote, K.G. (1998). Acoustic visualization and quantification of copepods and fish larvae in mesocosm experiments. Interim report, NFR project no. 113809/122. Institute of Marine Research, Bergen. 41 pp.

Knutsen, T. W. Melle, A. Hassel & J. Dalen (1997). Planktonforekomster over Svalbardbanken om vinteren: Akustiske registreringer og video-opptak fra en fjernstyrt undervannsfarkost (ROV). Interne notat nr. 1, Havforskningsinstituttet, Pp. 1-25.

Knutsen, T., and Foote, K. G., (1997a). Experiences in making acoustic measurements in mesocosms with Calanus finmarchicus. Final report, MARICULT Pilot FAPPE. Institute of Marine Research, Bergen. 41 pp.

Knutsen, T., and Foote, K. G. (1997b). Experiences in making acoustic measurements in a mesocosm with Calanus finmarchicus. ICES C.M. 1997/FF:11. 19 pp.

Foote, K.G., T. Knutsen, A.E. Bækkevold, P. Dalpadado, S.E. Johannessen (1996). Initial collateral measurements of some properties of Calanus finmarchicus. ICES C.M. 1996/L:21, Ref. B., Pp. 1-23.

Melle, W., A. Hassel, T. Knutsen (1996). Hydrografi og planktonøkologi over Svalbardbanken om vinteren: Et mulig gytefelt for den vestlige komponenten av polartorsk. Intern rapport, Havforskningsinstituttet, Pp. 1-48.

Melle, W., and T. Knutsen (1996). Toktrapport K/V "LANCE", 23. februar - 14. mars 1996: (Framdriftsrapport for prosjektet "Gytefelt for polartorsk"). Internt notat, Havforskningsinstituttet, Pp. 1-21.

Knutsen, T., P. Solemdal, H. Bjørke, P. Fossum, H.R. Skjoldal, M. Johannessen og K. Hansen (1994). Biologisk Oseanografisk Prøvetaking, Faglige og Tekniske Behov 1994 2004. Interne notat NR. 22, Pp.1-64.

Melle, W., T. Knutsen, S. Kaartvedt, B. Ellertsen, P. Dalpadado (1993). Økosystemet i østlige Norskehavet; Sokkel og Dyphav. Rapport fra Senter for Marint Miljø nr. 4. Pp. 1-108.

Skjoldal, H.R., P. Wiebe, T. Knutsen, and L. Postel (1993). Preliminary Report from the Sea-going Workshop in Norway June 1993 On Intercomparison and Evaluation of Methods for Sampling and Determination of Zooplankton Distribution and Biomass. (ICES Study Group on Zooplankton Production). ICES C.M./L:45, pp 1-16.

Kaartvedt, S., H.R. Skjoldal, W. Melle and T. Knutsen (1993). Underwater optics and behavioral responses of krill to presence of fish predators affect fish-plankton interactions. ICES C.M./L43, 9 pp.

Melle, W., S. Kaartvedt, T. Knutsen, P. Dalpadado and H.R. Skjoldal (1993). Acoustic visualization of large scale macroplankton and micronekton distributions across the Norwegian shelf and slope of the Norwegian Sea. ICES C.M./L:44, 25 pp.

Ona, E. and T. Knutsen (1992). Detection and counting of individual free-swimming krill using a 2 MHz scanning sonar. ICES C.M. 1992/L:18,1-8.

Knutsen, T. and Y. Følling (1990). Interaktivt System for Editering av Diskretiserte Vektorfelt under X-Window (VEDIX 1.0). Intern rapport, Senter for Marint Miljø, Havforskningsinstituttet, Rapportnr. BKO9004, Pp. 1-74.

Solemdal, P., Knutsen, T. and H. Bjørke (1988). Spawning areas and spawning period of the Arcto Norwegian haddock (Melanogrammus aeglefinus L.). Rapport nr. 22, Havforskningsinstituttets Egg og Larveprogram.

Westgård, T., Knutsen, T. and A. Christiansen (1988). FORSKERKART. Users Guide, part 5 of 6: Map Library, version 1.00 August 1988. Report no. 18. Havforskningsinstituttets Egg og Larveprogram.

Knutsen, T. and T. Westgård (1988). FORSKERKART. Brukerveiledning del 6 av 6: ITAKS, versjon 1.30, August 1988. Rapport nr. 18, Havforskningsinstituttets Egg og Larveprogram.

Knutsen, T. and T. Westgård (1988). Kartpresentasjon av kystressursdata. Havforskningsinstituttet, Rapportnr. BKO8808.

Westgård, T. and T. Knutsen (1988). Mapping of marine data. C.M. 1988/C:39, Ref D. Hydrographic Commitee/Ref. Statistics Commitee.

Osland, E. and T. Knutsen (1987). En biologisk basert eksponeringsskala for bedømming av hardbunnslittoral. Institutt for Marinbiologi. Rapportserie: Rapp. nr. 49, 1987.

Poster and presentations

Broms, C., W. Melle, L.-J. Naustvoll and T. Knutsen (2011). Plankton abundance, community structure and production across an Arctic front. 5th International Zooplankton Production Symposium ”Population dynamics, community dynamics, and climate variability” arrangers i Pucón, Chile, 14.-18.mars 2011. Poster.

Krafft, B.A., G. Skaret, W. Melle, T. Knutsen, S.A. Iversen (2010). Temporal variation in demography of Antarctic krill from the Scotia Sea, 2007-2009. International Polar Year 2010, Oslo Science Conference, 8-12 June 2010. Poster.

Krafft, B.A., W. Melle, T. Knutsen, E. Bagøien, C. Broms, B. Ellertsen, V. Siegel (2010).
Antarctic krill distribution and demography in the CCAMLR area 48.6, Southern Ocean. International Polar Year 2010, Oslo Science Conference, 8-12 June 2010. Poster.

Melle, W., T. Knutsen, Broms, C. (2010). Fine Scale Structure of the Physics and Biology of the Arctic Front south of Jan Mayen in the Norwegian Sea. International Polar Year 2010, Oslo Science Conference, 8-12 June 2010. Poster.

Hopcroft, R.R., Abramova, E., Arend, K., Ashjian, C.J., Błachowiak-Samołyk, K., Campbell, R.G., Dalpadado, P., Darnis, G., Falk-Petersen, S., Fortier, L., Gislason, A., Hirche, H.J., Hunt, B., Juul-Pedersen, T., Knutsen, T., Kosobokova, K.N., Kwasniewski, S., Markhaseva, E., Matsuno, K., Nelson, J., Nielsen, T.G., Robert, D., Rysgaard, S., Sejr, M., Walkusz, W., Wassmann, P., and Yamaguchi, A. (2010). A Pan-arctic analysis of Biodiversity patterns for zooplankton on Arctic shelves, Arctic Frontiers, Tromsø, 24-29 January, Oral, 1, Published.

Iversen, S.A., Melle, W., Bagøien, E., Broms, C., Chu, D., Edvardsen, B., Ellertsen, B., Jørstad, K., Karlsbakk, E., Klevjer, T., Knutsen, T., Korneliussen, R., Kowall, H., Krafft, B.A., Kaartvedt, S., Lona, P.B., Naustvoll, L., Nøttestad, L., Ostrowski, M., Siegel,V., Skagseth, Ø., Skaret, G., Søiland, H., Wiebe, P., Zhao, X. (2010). The Antarctic krill and ecosystem survey (AKES) with R/V G. O. Sars in 2008. International Polar Year 2010, Oslo Science Conference, 8-12 June 2010. Oral.

Korneliussen, R.J., Skaret, G. and Knutsen, T. (2010) . Acoustic identification and size estimation of euphausiids. International Polar Year 2010, Oslo Science Conference, 8-12 June 2010. Oral.

Broms, C., W. Melle, T. Knutsen, S.A. Iversen, B. Edvardsen, H. Søiland, B. Ellertsen, B.A. Krafft, E. Bagøien, L. Nøttestad, L.-J. Naustvoll, Ø. Skagseth (2010). Patterns in plankton and nekton community structure in relation to environmental factors in the Atlantic sector of the Southern Ocean. International Polar Year 2010, Oslo Science Conference, 8-12 June 2001. Poster.

Ingvaldsen R., T. Knutsen, P. Dalpadado, E. Eriksen, H. Gjøsæter og N. Øien (2010).
Oppsummering av resultater fra Økosystemtoktet i Barentshavet i 2010, Ukens Orientering, 6. oktober 2010. Oral.

Engen S., H. Strøm, P. Fauchald, H. Steen and T. Knutsen (2010). Does a climatic warming negatively affect little auks on Bjørnøya, Svalbard?; An Arctic seabird relying on Arctic zooplankton. 1st World Seabird Conference, September 7-11, 2010, Victoria, Canada. Poster.

Korneliussen, R., Heggelund, Y., Eliassen, I.K., Øye, O.K., Knutsen, T. (2009). Acoustic analysis and imaging of large euphausiid schools. I Proceedings of the 32nd Scandinavian Symposium on Physical Acoustics. Finse 1222 Hotel, 8-11 February 2009. Oral.

Ingvaldsen, R., M. Skern-Mauritzen, P. Dalpadado, H. Gjøsæter, E. Johannesen, T. Knutsen, P. Fauchald, E. Orlova, D. Prozorkevitch and A. Trofimov (2009). The Barents Sea Ecosystem Survey: Climate impacts on pelagic species distribution and interactions. ARCTIC SCIENCE SUMMIT WEEK, ASSW 2009, Bergen, Norway, 22-28 March 2009. Poster/Oral.

Knutsen, T. (2008). Background and strategy on zooplankton sampling and measurement approaches with some preliminary results from the first HARVEST field event. Foredrag på HARVEST Workshop 10-12 november 2008. Oral.

Calise, L., Knutsen, T. and Melle, W. (2008). Multifrequency target strength of horizontal free swimming northern krill (Meganyctiphanes norvegica). SEAFACTS. Symposium on the Ecosystem Approach with Fisheries Acoustics and Complementary Technologies Bergen, Norway, 16-20 June 2008. Oral.

Korneliussen, R. J., Heggelund, Y., Eliassen, I. K., Øye, O. K., Knutsen, T. and Dalen, J. (2008). Acoustic analysis and imaging of large euphausiid schools. SEAFACTS. Symposium on the Ecosystem Approach with Fisheries Acoustics and Complementary Technologies Bergen, Norway, 16-20 June 2008. Oral.

Lindal Jørgensen, L., R. Primicerio, E. Olsen, H. Gjøsæter, T. Knutsen, O.J. Lønne, H. Loeng (2007). Ecosystem Approach to Barents Sea Ecology: spatial and trophic relationships. Arctic Frontiers, The Unlimited Arctic, Policy Conference 21-23 January 2007, Tromsø, Norway. Poster.

Orlova, E., Knutsen, T., Rudneva, G.B., Dalpadado, P., V. N. Nesterova (2007). Preliminary results from the joint PINRO- IMR Barents Sea plankton investigations in 2004 and 2005. Symposium “Ecosystem Dynamics in the Norwegian Sea and Barents Sea, Norwegian College of Fishery Science, University of Tromsø, Norway,12-15th March 2007. Poster.

Orlova, E.L, Boitsov, V.D., Nesterova, V.N., Knutsen, T. and G.B.Rudneva (2007). Distribution and seasonal variations of the Barents Sea Calanus glacialis population structure
ECOSYSTEM DYNAMICS IN THE NORWEGIAN SEA AND BARENTS SEA,
ECONORTH, Tromsø, Norway, 12-15 March 2007. Poster.

Knutsen, T. (2006). AKES (Antarctic Krill and Ecosystem Studies), 1. November 2007 –1 March 2008. Foredrag på Oppstartskonferanse for norsk deltakelse i IPY. Thon Hotell Arena, Lillestrøm, 30.11–1.12.2006. Oral.

Calise L, Knutsen, T. and Melle W. (2005) On the feasibility of direct acoustic measurements on small marine organisms in a large enclosure: Mesocosm Venue and Acoustic Systems. 28th Scandinavian Symposium on Physical Acoustics, Norlandia Ustaoset Hotell 23–26 January 2005. Oral.

Lebourges Dhaussy, A., T. Knutsen, R. J. Korneliussen (2004). Acoustic backscatter from zooplankton and fish explored through an optimized model framework. ICES CM. 2004/Poster R:39.

Knutsen, T. and W. Melle (2003). Plankton som fôrressurs i oppdrettsnæringen. Møteforum Marin, Handelen og Sjøfartens Hus, Bergen 6. oktober 2003. Foredrag. Oral.

Hassel, A., Knutsen, T., Dalen, J., Skaar, K., Østensen, Ø., Haugland, E.K., Fonn, M., Høines, Å. and O.A. Misund (2003). Lesser sandeel and seismic exploration – a field experiment using cages. ICES/FAO Symposium on "Fish Behaviour in Exploited Ecosystems", 23-26 June 2003 Bergen, Norway. Poster.

Skjoldal, H.R., P.H. Wiebe, L. Postel, T. Knutsen and D. Sameoto (2003). Inter-relationships between a variety of meso- and macrozooplankton net based collecting devices used to estimate zooplankton biomass and abundance: results from a Sea-Going Workshop. 3rd. Zooplankton Production Symposium", 20-23 May Gijon, France. Poster.

Calise, L., Mazzola, S., Goncharov, S., Angotzi, A.R., Bonanno, A., Patti, B., van der Meeren, T. and Knutsen, T. (2002). Feeding performance of herring (Clupea harengus) larvae in mesocosm as observed by scientific echosounder. 26th Annual Larval Fish Conference, 22-26 July 2002, Bergen, Norway. Poster and Abstract.

Knutsen,T. and B. Serigstad (2000). Environmental and biological monitoring during DeepSpill_2000, 21 - 30 June. DeepSpill 2000 Workshop, Herndon, VA 16-17 November 2000. Oral.

Atkins P., C. Bongiovanni, Tim Collins, J. Davies, S. Dunn, K. Foote, T. Knutsen and T. Mortensen (2000). Wideband Sonar - Plankton, Communications and Picket Fences. SCOR Working Group 118: New Technologies for Observing Marine Life, Dunsmuir Lodge, Sidney, BC, 9-11 November 2000. Oral.

Atkins, P.R., C. Bongiovanni, D.T.I. Francis, K.G. Foote, T. Knutsen, P.K. Eriksen, T. Mortensen (1999). Broadband acoustic scattering signatures of atlantic herring, 2nd EAA International Symposium on Hydroacoustics, Jurata, Gdansk, 24 - 27 May 1999, Poland.

Gordon, R.L., L. Zedel and T. Knutsen (1998). FishMASS: ADCP technology adapted to split-beam fisheries echo sounding. 16th International Congress on Acoustics (ICA) and the 135th Meeting of the Acoustical Society of America (ASA), 20 26 June 1998 Seattle, Washington, USA., Pp. 1-3.

Solemdal, P., N. Mukhina, T. Knutsen, H. Bjørke and P. Fossum (1997). Maturation, spawning and egg drift of arcto-norwegian haddock (Melanogrammus aeglefinus). Fisheries Society of the British Isles, Annual Symposium 8th-11th July 1997, Ichthyoplankton Ecology, University College Galway, Ireland.

Knutsen, T., (1994). Influence of shelf topography and currents on euphausiid distribution in Norwegian coastal waters off Møre, western Norway. Symposium on the Ecology of Fjords and Coastal Waters, Tromsø, Norway, 5-9 December 1994. Oral.

Nichols, J., R. Harris, L. Postel, H.R. Skjoldal, T. Knutsen (1994). The Sampling Site. Symposium on Zooplankton Production, Plymouth, U.K., 15th 19th August 1994.

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