Velkommen til Arktisk og marin biologi




Forskningsinteresser

Populasjons økologi, livshistoriestrategier, fersk- og saltvannsøkologi til laksefisk, parasittologi, interaksjoner, fiskemerking- og fangstteknikker, telemetri (elektronisk sporing), egnethetsanalyser for oppdrettsanlegg, vassdrag- og kystsoneforvaltning, EU's vanndirektiv, biologisk mangfold, konsekvensanalyser og prøvefiske

Scientific interests: Freshwater and marine ecology of anadromous salmonids, population ecology, life-history strategies, parasitology, fish-marking and trapping techniques, telemetry, suitability analysis for locations of fish farms, costal zone and watercourse management, consequence analysis and freshwater fish surveys.

Forskningsprosjekter

SALMOTRACK - Electronic tracking of northern salmonides

SALMOTRACK-project is a primary framework that coordinates most activities in northern Norway on electronic tracking of all life stages on anadromous salmonides, with special emphasis on anadromous species (Atlantic salmon, Arctic charr and sea trout). One of the goals of this project is to coordinate the available logistic and equipment in such a way that as many as possible sub-projects can utilize this in order to maximize the synergetic effects and reduce the total cost of the different sub-projects. This is the largest and most complete fish tracking project in Scandinacia on salmonid fishes. By use of electronic tags (PIT-, archival-, radio-, acoustic and satellite pop-up-tags) the project has since 2006 covered almost all life history stages of Atlantic salmon, from juveniles to salmon smolts, postsmolts, returning salmon (fjord), ascending, spawning and overwintering salmon (river), salmon kelts (post-spawners) in river, fjord and open ocean, immature fall running salmon, as well as escaped farm salmon, anadromous Arctic charr and sea trout and silver eels migrating within rivers and fjord system. The main activity for SALMOTRACK in Norway is in the Alta River and Alta Fjord, but the project also involves activities in the Rivers Neiden, Tana, Skibotn, Signaldalen and Orkla. In addition, we also tag salmon in Ireland, Iceland and Greenland. Since 2006, this activity has contributed to two post-doc positions two PhD positions and six master and two bachelor students at the University of Tromsø. In addition, one Japanese post doc and two international PhD-students (Canada and Sweden) are directly involved in the project, as well as several other national (Norwegian Institute for Nature Research, Trondheim, and Institute for Marine Research, Bergen) and international partners (from Canada, USA, Iceland, Ireland, Sweden, Denmark and Finland). The project is supported by external funding from the Norwegian Research Council, Tromsø Forskninsstiftelse (Moen-foundation), the Norwegian Directorate of Nature Management and others.

 

Project leader/member of co-ordinating group of six large-scale projects since 2000:

  • Discovering the unknown marine migration of northern Atlantic salmon: SALMOTRACK 2009-2012) (Tromsø forskningsstiftelse)
  • Spatial and temporal variation in production of juvenile Atlantic salmon: the importance of small streams as rearing habitats(2007-2009, NFR 177980/S30)
  • The importance of repeat spawners and late autumn migrants on the production of Atlantic salmon (2007-2010, UiTø)
  • Mapping short and long term migration pattern of North Norwegian Atlantic salmon at sea" SALMOTRACK 2006-2010 (NFR, no.171601/S40, 2006-2011)
  • Relationships between stochastic marine environment factors and production of sea run Arctic charr and brown trout (2002-2004, NFR 146854/120)
  • The importance of early marine feeding on the growth and survival of Atlantic salmon post-smolt in Norwegian fjords (2001-2006, NFR 149796/720)

Project leader of >25 medium and small sized projects supported by the Norwegian Directory of Nature Management, NVE, the County of Finnmark and Troms, NINA and other since 2000 to present, related to migration studies, population ecology, life-history strategies, freshwater and marine ecology of salmonids, parasitology, telemetry, suitability analysis for locations of fish farms, costal zone and watercourse management, EU's water directive, consequence analysis and freshwater fish surveys.

Verv

Teaching and supervising
  • Bio-1101: Biologi i fortid, nåtid og framtid (first level)
    NAB-2006: "Fish and wildlife management in northern areas" (second level)
  • NAB-3006: "International management of northern freshwater fish" (third level).
  • Other courses (taching or have teached): Zoology I+II, marine biology, freshwater ecology, animal science and ethics (first level).
  • Main supervisor of several Bacherlor-, Masters- and PhD-students and PostDoc's
Other engagements:
  • Scientific adviser at Norwegian Institute for Nature Research (20% position)
  • Scientific council for salmon management (DN)

Andre publikasjoner

Scientific publications since 2000 (international per reviewed journal articles)

  1. Rikardsen, A.H. & Dempson (2010). Dietary life-support: The marine feeding of Atlantic salmon (Chapter 5). In: Salmon Ecology (Aas, Ø, Einum, S., Klemetsen, A., Skurldal. J. eds). Blackwell (in press).
  2. Thorstad, E.B, Whoriskey, F, Rikardsen, A.H. & Aarestrup, K. (2010). Aquatic nomads: the life and migrations of the Atlantic salmon (Chapter 1). In: Salmon Ecology (Aas, Ø, Einum, S., Klemetsen, A. eds). Blackwell (in press).
  3. Strand, J.E.T., Davidsen, J.G., Jørgensen, E. & Rikardsen, A.H. (2010). Descending Atlantic salmon smolts with low levels of gill Na+, K+ -ATPase activity; do they delay sea entry? Ecology of Freshwater Fishes (in press).
  4. Jensen, J.L.A., Halttunen, E., Thorstad, E.B., Næsje, T.F., Rikardsen, A.H. (2010). Does catch-and-release angling alter the migratory behavior of Atlantic salmon? Fisheries Research (in press).
  5. Davidsen, J.G., Rikardsen, A.H., Halttunen, E., Mitamura, H., Thorstad, E.B., Præbel, K., Skarðhamar, J. & Næsje, T.F (2010). Homing behaviour of Atlantic salmon during final phase of marine migration and river entry: Alta Fjord, a case study. Fisheries Management and Ecology (in press).
  6. Halttunen, E., Rikardsen, A.H., Thorstad, E.B., Næsje, T.F., Jensen, J.L.A. & Aas, Ø. (2010). Impact of catch-and-release practices on behaviour and mortality of Atlantic salmon (Salmo salar L.) kelts. Fisheries Research 105, 141-147.
  7. Cedar M. Chittenden, C.M., Biagi, C., Davidsen, J.G., Davidsen, A.G., Kondo, H., McKnight, A, Pedersen, O.P., Raven, P., Rikardsen, A.H., Shrimpton, J.M., Zuehlke, B., McKinley, R.S. & Devlin, R.H. (2010). Genetic Versus Rearing-environment Effects on Phenotype: Hatchery and Natural Rearing Effects on Hatchery- and Wild-born Coho Salmon. PLoS ONE  5(8): e12261. doi:10.1371/journal.pone.0012261
  8. Johansen, M, Thorstad, E.B., Rikardsen, A.H., Koksvik, J.I, Ugedal, O., Jensen, A.J, Saksgård, L. & T. F. Næsje. (2010). Does loss of ice cover during winter in a regulated arctic river effect drift of potential prey for juvenile Atlantic salmon? Hydrobiologia (in press)
  9. Davidsen, J.G., Rikardsen, A.H., Halttunen, E., Thorstad, E.B., Økland, F., Letcher, B.H., Skarðhamar, J. & Næsje, T.F. (2009). Migratory behaviour and survival rates of wild northern Atlantic salmon (Salmo salar) post-smolts: effects of environmental factors. Journal of Fish Biology 75, 1700-1718.
  10. Nils Arne Hvidsten, N.A., Jensen, A.J., Rikardsen, A.H., Finstad, B., Aure, J., Stefansson, S., Fiske, P, Johnsen, B.O. (2009). Influence of sea temperature and initial marine feeding on survival of Atlantic salmon post-smolts. Journal of Fish Biology 74, 1532-1548.
  11. Halttunen, E., Rikardsen, A.H., Davidsen, J.G., Thorstad, E.B. & Dempson, B.J. (2009). Survival, migration speed and swimming depth of Atlantic salmon kelts during sea entry and fjord migration. In Tagging and tracking of Marine Animals with Electronic Devices, Reviews: Methods and Technologies in Fish Biology and Fisheries 9 (Nielsen, J. L., Arrizabalaga, H., Fragoso, N., Hobday, A., Lutcavage, M. & Sibert, J., eds.), pp. 35-49. Dordrecht: Springer.
  12. Rikardsen, A.H., Hansen, L.P., Jensen, A., Vollen, T. & Finstad, B. (2008). Do Norwegian Atlantic salmon feed in the northern Barents Sea? - Tag recoveries from 70 - 78º N. Journal of Fish Biology 72, 1792-1798.
  13. Jensen J.L.A. & Rikardsen, A.H. (2008). Do northern riverine anadromous Arctic charr and sea trout overwinter in estuarine and marine waters? Journal of Fish Biology 73, 1810-1818
  14. Davidsen, J.G., Plantalech Manel-la, N., Økland, F., Diserud, O.H., Thorstad, E.B., Finstad, B., Sivertsgård, R., McKinley, S & A. H. Rikardsen. (2008). Changes in swimming depths of Atlantic salmon postsmolts in relation to light intensity. Journal of Fish Biology 73, 1065-1074.
  15. Rikardsen, A.H., Diserud, O., Elliott, J.M, Dempson, J.B., Sturlaugsson, J. & Jensen, A. (2007). The marine temperature and depth preferences of Arctic charr and sea trout, as recorded by data storage tags. Fisheries oceanography 16, 436-447.
  16. Rikardsen, A.H., Dempson, J.B., Amundsen, P.-A., Bjørn, P.A., Finstad, B. & Jensen, A.J. (2007). Temporal variability in marine feeding of sympatric Arctic charr and sea trout. Journal of Fish Biology 70, 837-847.
  17. Bjørn, P.A., Finstad, B., R. Kristoffersen, R. McKinley, S. & Rikardsen, A.H. (2007). Differences in risks and consequences of salmon lice, Lepeophtheirus salmonis (Krøyer) infection on sympatric populations of Atlantic salmon, sea trout and Arctic charr in northern fjords. ICES Journal of Marine Science 64, 386-393.
  18. Knudsen, R., Adolfsen, P., Sandring, S., Kristoffersen, R., Siikavoupio, S. &. Rikardsen, A.H. (2007). The suitability of anadromous Arctic charr as host and vector of the monogenean Gyrodactylus salaries. Ecology of Freshwater Fish 16, 99-104.
  19. Rikardsen, A.H. & Thorstad, E.B. (2006). External attachment of data storage tags increases probability of being recaptured in nets compared to internal tagging. Journal of Fish Biology 68, 963-968.
  20. Rikardsen, A.H., Amundsen, P-.A., Knudsen, R. & Sandring, S. (2006). Seasonal marine feeding and body condition of sea trout Salmo trutta (L.) at its northern distribution area. ICES Journal of Marine Science 63, 466-475.
  21. Rikardsen, A.H. & Sandring, S. (2006). Diet and size-selective feeding by escaped hatchery rainbow trout Oncorhynchus mykiss (Walbaum). ICES Journal of Marine Science 63, 460-465.
  22. Rikardsen, A.H. & Amundsen, P.A. (2005). Pelagic marine feeding behaviour of Arctic charr Salvelinus alpinus and sea trout Salmo trutta. Journal of Fish Biology 66, 1163-1166.
  23. Knudsen, R, Rikardsen, A.H., Dempson, J.B., Bjørn, P.A., Finstad, B., Amundsen, P.-A. & Holm, M. (2005). Intestinal trophic transmitted parasites as bio-indicators of prolonged fjord-feeding of Atlantic salmon (Salmo salar) post-smolts in Northern Norway. Journal of Fish Biology 66, 758-772.
  24. Rikardsen, A.H., Thorpe, J.E. & Dempson, B. (2004). Modelling the life-history variation of Arctic charr. Ecology of Freshwater Fish 13, 305-311
  25. Rikardsen, A.H., Haugland, M., Bjørn, P.A. Finstad, B., Knudsen, R., Dempson, J.B., Holm, M., Holst, J.C. & Hvidsten, N.A. (2004). Geographical differences in early marine feeding of Atlantic salmon post-smolt in Norwegian fjords. Journal of Fish Biology 64, 1655-1679.
  26. Rikardsen, A.H. (2004). Seasonal occurrence of sea lice Lepeophtheirus salmonis on sea trout in two north Norwegian fjords. Journal of Fish Biology 65, 711-722.
  27. Rikardsen, A.H. & Johansen, M. (2003). A morphometric method for estimation of total fat level in live Arctic charr: a case study of its application on wild fish. Journal of Fish Biology 62, 724-734.
  28. Rikardsen, A.H., Amundsen, P.-A. & Bodin, P.J. (2003). Growth and diet of anadromous Arctic charr after their return to freshwater. Ecology of Freshwater Fish 12, 74-80
  29. Rikardsen, A.H., Woodgate, M. & Thomson, D. (2002). A comparison of Floy and soft VIalpha tags on hatchery Arctic charr, with emphasis on tag retention, growth and mortality. Environmental Biology of Fishes 64, 269-273.
  30. Rikardsen, A.H., Amundsen, P.-A. & Bodin, P.J. (2002). Foraging behaviour changes of Arctic charr during smolt migration in northern Norway. Journal of Fish Biology 60, 489-491.
  31. Rikardsen, A.H. (2000). Effects of Floy and soft VIalpha tags on growth and survival of juvenile Arctic char. North American Journal of Fisheries Management 20, 719-728.
  32. Rikardsen, A.H., Amundsen, P.-A., Bjørn, P.A. & Johansen, M. (2000). Comparison of growth, diet and food consumption of sea‑run and lake‑dwelling Arctic charr. Journal of Fish Biology 57, 1172-1188.
  33. Rikardsen, A.H., & Elliott, J.M. (2000). Variations in juvenile growth, energy allocation and life-history strategies of two populations of Arctic charr in North Norway. Journal of Fish Biology 56, 328-346.
  34. Rikardsen, A.H., Svenning, M.-A. & Klemetsen, A. (1997). The relationships between anadromy, sex ratio and parr growth of Arctic charr in a lake in North Norway. Journal of Fish Biology 51, 447-461.

 

Arbeider i CRIStin


  • Ferter, Keno; Rikardsen, Audun H.; Evensen, Tor Hatten; Svenning, Martin; Tracey, Sean R.. Survival of Atlantic halibut (Hippoglossus hippoglossus) following catch-and-release angling. Fisheries Research 2017; Volum 186 Part 3. ISSN 0165-7836.s 634 - 641.s doi: 10.1016/j.fishres.2016.05.022.

  • Ulvan, Eva Marita; Foldvik, Anders; Jensen, Arne Johan; Finstad, Bengt; Thorstad, Eva Bonsak; Rikardsen, Audun H.; Næsje, Tor. Return migration of adult Atlantic salmon (Salmo salar L.) to northern Norway. ICES Journal of Marine Science 2017. ISSN 1054-3139.s doi: 10.1093/icesjms/fsx183.

  • Eldøy, Sindre Håvarstein; Davidsen, Jan Grimsrud; Thorstad, Eva Bonsak; Whoriskey, Frederick G.; Aarestrup, Kim; Næsje, Tor; Rønning, Lars; Sjursen, Aslak Darre; Rikardsen, Audun H.; Arnekleiv, Jo Vegar. Marine depth use of sea trout Salmo trutta in fjord areas of central Norway. Journal of Fish Biology 2017; Volum 91 (5). ISSN 0022-1112.s 1268 - 1283.s doi: 10.1111/jfb.13463.

  • Hedger, Richard David; Rikardsen, Audun H.; Strøm, John Fredrik; Righton, David A.; Thorstad, Eva Bonsak; Næsje, Tor. Diving behaviour of Atlantic salmon at sea: effects of light regimes and temperature stratification. Marine Ecology Progress Series 2017; Volum 574. ISSN 0171-8630.s 127 - 140.s doi: 10.3354/meps12180.

  • Forseth, Torbjørn; Barlaup, Bjørn Torgeir; Finstad, Bengt; Fiske, Peder; Gjøsæter, Harald; Falkegård, Morten; Hindar, Atle; Mo, Tor Atle; Rikardsen, Audun H.; Thorstad, Eva Bonsak; Vøllestad, Leif Asbjørn; Wennevik, Vidar. The major threats to Atlantic salmon in Norway. ICES Journal of Marine Science 2017; Volum 74 (6). ISSN 1054-3139.s 1495 - 1513.s doi: 10.1093/icesjms/fsx020.

  • Hedger, Richard David; Rikardsen, Audun H.; Thorstad, Eva Bonsak. Pop-up satellite archival tag effects on the diving behaviour, growth and survival of adult Atlantic salmon Salmo salar at sea. Journal of Fish Biology 2017; Volum 90 (1). ISSN 0022-1112.s 294 - 310.s doi: 10.1111/jfb.13174.

  • Strøm, John Fredrik; Thorstad, Eva Bonsak; Chafe, Graham; Sørbye, Sigrunn Holbek; Righton, David; Rikardsen, Audun H.; Carr, Jonathan. Ocean migration of pop-up satellite archival tagged Atlantic salmon from the Miramichi River in Canada. ICES Journal of Marine Science 2017; Volum 74 (5). ISSN 1054-3139.s 1356 - 1370.s doi: 10.1093/icesjms/fsw220.

  • Flaten, Anne Cathrine; Davidsen, Jan Grimsrud; Thorstad, Eva Bonsak; Whoriskey, Frederick G.; Rønning, Lars; Sjursen, Aslak Darre; Rikardsen, Audun H.; Arnekleiv, Jo Vegar. The first months at sea: marine migration and habitat use of sea trout Salmo trutta post-smolts. (fulltekst) Journal of Fish Biology 2016; Volum 89. ISSN 0022-1112.s 1624 - 1640.s doi: 10.1111/jfb.13065.

  • Jensen, J. L. A.; Christensen, G. N.; Hawley, K. H.; Rosten, C. M.; Rikardsen, A. H.. Arctic charr exploit restricted urbanized coastal areas during marine migration: Could they be in harm’s way?. Hydrobiologia 2016; Volum 783 (1). ISSN 0018-8158.s 335 - 345.s doi: 10.1007/s10750-016-2787-6.

  • Courtney, Michael B.; Scanlon, Brendan S.; Rikardsen, Audun H.; Seitz, Andrew C.. Utility of Pop-Up Satellite Archival Tags to Study the Summer Dispersal and Habitat Occupancy of Dolly Varden in Arctic Alaska. Arctic 2016; Volum 69 (2). ISSN 0004-0843.s 137 - 146.s doi: 10.14430/arctic4561.

  • Hendrichsen, Ditte Katrine; Kristoffersen, Roar; Gjelland, Karl Øystein; Knudsen, Rune; Kusterle, Stefan; Rikardsen, Audun H.; Henriksen, Eirik Haugstvedt; Smalås, Aslak; Olstad, Kjetil. Transmission dynamics of the monogenean Gyrodactylus salaris under seminatural conditions. Journal of Fish Diseases 2015; Volum 38 (6). ISSN 0140-7775.s 541 - 550.s doi: 10.1111/jfd.12263.

  • Courtney, Michael B.; Scanlon, Brendan S.; Rikardsen, Audun H.; Seitz, Andrew. Marine behavior and dispersal of an important subsistence fish in Arctic Alaska, the Dolly Varden. Environmental Biology of Fishes 2015. ISSN 0378-1909.s 1 - 14.s doi: 10.1007/s10641-015-0468-3.

  • Eldøy, Sindre Håvarstein; Davidsen, Jan Grimsrud; Thorstad, Eva Bonsak; Whoriskey, F.; Aarestrup, K.; Næsje, Tor; Rønning, Lars; Sjursen, Aslak Darre; Rikardsen, Audun H.; Arnekleiv, Jo Vegar. Marine migration and habitat use of anadromous brown trout (Salmo trutta). (fulltekst) Canadian Journal of Fisheries and Aquatic Sciences 2015; Volum 72 (9). ISSN 0706-652X.s 1366 - 1378.s doi: 10.1139/cjfas-2014-0560.

  • Jensen, Arne Johan; Diserud, Ola Håvard; Finstad, Bengt; Fiske, Peder; Rikardsen, Audun H.. Between-watershed movements of two anadromous salmonids in the Arctic. Canadian Journal of Fisheries and Aquatic Sciences 2015; Volum 72 (6). ISSN 0706-652X.s 855 - 863.s doi: 10.1139/cjfas-2015-0015.

  • Jensen, Jenny Lovisa Alexandra; Rikardsen, Audun H.; Thorstad, Eva Bonsak; Amund, Heitmann Suhr; Davidsen, Jan Grimsrud; Primicerio, Raul. Water temperatures influence the marine area use of Salvelinus alpinus and Salmo trutta. Journal of Fish Biology 2014; Volum 84 (6). ISSN 0022-1112.s 1640 - 1653.s doi: 10.1111/jfb.12366.

  • Uglem, Ingebrigt; Økland, Finn; Rikardsen, Audun H.. Early marine survival and movements of escaped Atlantic Salmon Salmo Salar L. juveniles from a land-based smolt farm during autumn. Aquaculture Research 2013; Volum 44 (12). ISSN 1355-557X.s 1824 - 1834.s doi: 10.1111/j.1365-2109.2012.03187.x.

  • Halttunen, Elina; Jensen, Jenny; Næsje, Tor; Davidsen, Jan Grimsrud; Thorstad, Eva Bonsak; Chittenden, Cedar; Hamel, Sandra; Primicerio, Raul; Rikardsen, Audun H.. State-dependent migratory timing of postspawned Atlantic salmon (Salmo salar). Canadian Journal of Fisheries and Aquatic Sciences 2013; Volum 70 (7). ISSN 0706-652X.s 1063 - 1071.s doi: 10.1139/cjfas-2012-0525.

  • Kusterle, Stefan; Halttunen, Elina; Thorstad, Eva Bonsak; Næsje, Tor; Jensen, Jenny; Bueno, Alfonso Gallo; Ramos, Elena Olague; Rikardsen, Audun H.. The gill maggot Salmincola salmoneus as an indicator of repeat spawning in Atlantic salmon Salmo salar. Journal of Fish Biology 2013; Volum 82 (3). ISSN 0022-1112.s 1068 - 1073.s doi: 10.1111/jfb.12040.

  • Davidsen, Jan Grimsrud; Thorstad, Eva Bonsak; Baktoft, Henrik; Aune, Svein; Økland, Finn; Rikardsen, Audun H.. Can sea trout Salmo trutta compromise successful eradication of Gyrodactylus salaris by hiding from CFT Legumin (rotenone) treatments?. Journal of Fish Biology 2013; Volum 82 (4). ISSN 0022-1112.s 1411 - 1418.s doi: 10.1111/jfb.12065.

  • Davidsen, Jan Grimsrud; Rikardsen, Audun H.; Thorstad, Eva Bonsak; Halttunen, Elina; Mitamura, Hiromichi; Præbel, Kim; Skardhamar, Jofrid; Næsje, Tor. Homing behaviour of Atlantic salmon (Salmo salar) during final phase of marine migration and river entry. Canadian Journal of Fisheries and Aquatic Sciences 2013; Volum 70 (5). ISSN 0706-652X.s 794 - 802.s doi: 10.1139/cjfas-2012-0352.

  • Chittenden, Cedar; Ådlandsvik, Bjørn; Pedersen, ole petter; Righton, David; Rikardsen, Audun H.. Testing a model to track fish migrations in polar regions using pop-up satellite archival tags. Fisheries Oceanography 2013; Volum 22 (1). ISSN 1054-6006.s 1 - 13.s doi: 10.1111/fog.12000.

  • Chittenden, Cedar; Fauchald, Per; Rikardsen, Audun H.. Important open-ocean areas for northern Atlantic salmon (Salmo salar) - as estimated using a simple ambient-temperature approach. Canadian Journal of Fisheries and Aquatic Sciences 2013; Volum 70 (1). ISSN 0706-652X.s 101 - 104.s doi: 10.1139/cjfas-2012-0215.

  • Jensen, Arne Johan; Finstad, Bengt; Fiske, Peder; Hvidsten, Nils Arne; Rikardsen, Audun H.; Saksgård, Laila M.. Timing of smolt migration in sympatric populations of Atlantic salmon (Salmo salar), brown trout (Salmo trutta), and Arctic char (Salvelinus alpinus). Canadian Journal of Fisheries and Aquatic Sciences 2012; Volum 69 (4). ISSN 0706-652X.s 711 - 723.s doi: 10.1139/F2012-005.

  • Jensen, Jenny; Rikardsen, Audun H.. Archival tags reveal that Arctic charr Salvelinus alpinus and brown trout Salmo trutta can use estuarine and marine waters during winter. Journal of Fish Biology 2012; Volum 81 (2). ISSN 0022-1112.s 735 - 749.s doi: 10.1111/j.1095-8649.2012.03343.x.

  • Kusterle, Stefan; Kristoffersen, Roar; Rikardsen, Audun H.. Population dynamics of Salmincola salmoneus on Atlantic salmon in a northern Norwegian river. Diseases of Aquatic Organisms 2012; Volum 100 (1). ISSN 0177-5103.s 59 - 70.s doi: 10.3354/dao02489.

  • Thorstad, Eva Bonsak; Whoriskey, F.; Uglem, Ingebrigt; Moore, A.; Rikardsen, Audun H.; Finstad, Bengt. A critical life stage of the Atlantic salmon Salmo salar: behaviour and survival during the smolt and initial post-smolt migration. Journal of Fish Biology 2012; Volum 81 (2). ISSN 0022-1112.s 500 - 542.s doi: 10.1111/j.1095-8649.2012.03370.x.

  • Rikardsen, Audun H.; Dempson, J Brian. Dietary Life-Support: The Food and Feeding of Atlantic Salmon at Sea. Blackwell Publishing 2011 ISBN 978-1-4051-9769-4.s 115 - 143.

  • Knudsen, Rune; Amundsen, Per-Arne; Rikardsen, Audun H.. Individual feeding specialisation of a naive vs. veteran predators. Ecology of Freshwater Fish 2011; Volum 20 (4). ISSN 0906-6691.s 522 - 528.s doi: 10.1111/j.1600-0633.2011.00500.x.

  • Chittenden, Cedar; Rikardsen, Audun H.; Skilbrei, Ove Tommy; Davidsen, Jan Grimsrud; Halttunen, Elina; Skardhamar, Jofrid; McKinley, R. Scott. An effective method for the recapture of escaped farmed salmon. Aquaculture Environment Interactions 2011; Volum 1 (3). ISSN 1869-215X.s 215 - 224.s doi: 10.3354/aei00021.

  • Davidsen, Jan Grimsrud; Finstad, Bengt; Økland, Finn; Thorstad, Eva Bonsak; Mo, Tor Atle; Rikardsen, Audun H.. Early marine migration of European silver eel Anguilla anguilla in northern Norway. Journal of Fish Biology 2011; Volum 78 (5). ISSN 0022-1112.s 1390 - 1404.s doi: 10.1111/j.1095-8649.2011.02943.x.

  • Strand, Jo Espen Tau; Davidsen, Jan Grimsrud; Jørgensen, Even Hjalmar; Rikardsen, Audun. Seaward migrating Atlantic salmon smolts with low levels of gill Na+, K+ -ATPase activity; is sea entry delayed?. Environmental Biology of Fishes 2011; Volum 90 (3). ISSN 0378-1909.s 317 - 321.s doi: 10.1007/s10641-010-9737-3.

  • Thorstad, Eva B.; Whoriskey, F.; Rikardsen, Audun H.; Aarestrup, Kim. Aquatic Nomads: The life and Migrations of the Atlantic Salmon. Blackwell Publishing 2011 ISBN 978-1-4051-9769-4.s 1 - 32.

  • Jensen, Jenny; Halttunen, Elina; Thorstad, Eva B.; Næsje, Tor; Rikardsen, Audun H.. Does catch-and-release angling alter the migratory behaviour of Atlantic salmon?. Fisheries Research 2010; Volum 106 (3). ISSN 0165-7836.s 550 - 554.s doi: 10.1016/j.fishres.2010.08.013.

  • Johansen, Morten; Thorstad, EB; Rikardsen, Audun; Koksvik, J.I.; Ugedal, O; Jensen, AJ; Saksgard, L; Naesje, TF. Prey availability and juvenile Atlantic salmon feeding during winter in a regulated subarctic river subject to loss of ice cover. Hydrobiologia 2010; Volum 644 (1). ISSN 0018-8158.s 217 - 229.s doi: 10.1007/s10750-010-0118-x.

  • Halttunen, Elina; Rikardsen, Audun; Thorstad, Eva B.; Næsje, Tor F.; Jensen, Jenny Lovisa Alexandra; Aas, Øystein. Impact of catch-and-release practices on behavior and mortality of Atlantic salmon (Salmo salar L.) kelts. Fisheries Research 2010; Volum 105 (3). ISSN 0165-7836.s 141 - 147.s doi: 10.1016/j.fishres.2010.03.017.

  • Chittenden, Cedar Marget; Biagi, Carlo; Davidsen, Jan Grimsrud; Grimsrud, anette sophie; Kondo, Hidehiro; McKnight, Allison; Pedersen, ole petter; Raven, Peter; Rikardsen, Audun; Shrimpton, Mark; Zuehlke, Brett; McKinley, Scott; Devlin, Robert. Genetic versus Rearing-Environment Effects on Phenotype: Hatchery and Natural Rearing Effects on Hatchery-and Wild-Born Coho Salmon. PLoS ONE 2010; Volum 5 (8). ISSN 1932-6203.s doi: 10.1371/journal.pone.0012261.

  • Halttunen, Elina; Rikardsen, Audun; Davidsen, Jan Grimsrud; Thorstad, Eva B.; Dempson, Brian J.. Survival, migration speed and swimming depth of Atlantic salmon kelts during sea entry and fjord migration. Springer 2009; Volum 9 (Part 1) ISBN 978-1-4020-9640-2. ISSN 1571-3075.s 35 - 49.

  • Hvidsten, N. A.; Jensen, AJ; Rikardsen, Audun; Finstad, B.; Aure, J.; Stefansson, S.; Fiske, P; Johnsen, B. O.. Influence of sea temperature and initial marine feeding on survival of Atlantic salmon Salmo salar post-smolts from the Rivers Orkla and Hals, Norway. Journal of Fish Biology 2009; Volum 74 (7). ISSN 0022-1112.s 1532 - 1548.s doi: 10.1111/j.1095-8649.2009.02219.x.

  • Davidsen, Jan Grimsrud; Rikardsen, Audun; Halttunen, Elina; Thorstad, EB; Økland, F.; Letcher, B.H,; Skardhamar, Jofrid; Næsje, Tor. Migratory behaviour and survival rates of wild northern Atlantic salmon Salmo salar post-smolts: effects of environmental factors. Journal of Fish Biology 2009; Volum 75 (7). ISSN 0022-1112.s 1700 - 1718.s doi: 10.1111/j.1095-8649.2009.02423.x.

  • Davidsen, Jan Grimsrud; Plantalech, Nùria; Okland, F; Diserud, Ola H.; Thorstad, EB; Finstad, B.; SivertsgÅrd, rolf; McKinley, R. S.; Rikardsen, Audun. Changes in swimming depths of Atlantic salmon Salmo salar post-smolts relative to light intensity. Journal of Fish Biology 2008; Volum 73 (4). ISSN 0022-1112.s 1065 - 1074.s doi: 10.1111/j.1095-8649.2008.02004.x.

  • Jensen, Jenny; Rikardsen, Audun. Do northern riverine anadromous Arctic charr Salvelinus alpinus and sea trout Salmo trutta overwinter in estuarine and marine waters?. Journal of Fish Biology 2008; Volum 73. ISSN 0022-1112.s 1810 - 1818.s doi: 10.1111/j.1095-8649.2008.02042.x.

  • Rikardsen, Audun; Hansen, LP; Jensen, A; Vollen, Tone; Finstad, Bengt. Do Norwegian Atlantic salmon feed in the northern Barents Sea? Tag recoveries from 70 to 78 degrees N. Journal of Fish Biology 2008; Volum 73 (4). ISSN 0022-1112.s 1065 - 1074.s doi: 10.1111/j.1095-8649.2008.02004.x.

  • Knudsen, Rune; Adolfsen, Pål; Sandring, Stig; Kristoffersen, Roar; Siikavuopio, Sten Ivar; Rikardsen, Audun. The suitability of anadromous Arctic charr as host and vector of the monogenean Gyrodactylus salaris. Ecology of Freshwater Fish 2007; Volum 16 (1). ISSN 0906-6691.s 99 - 104.s doi: 10.1111/j.1600-0633.2006.00184.x.

  • Rikardsen, Audun; Dempson, J Brian; Amundsen, Per-Arne; Bjørn, Pål Arne; Finstad, B.; Jensen, AJ. Temporal variability in marine feeding of sympatric Arctic charr and sea trout. Journal of Fish Biology 2007; Volum 70. ISSN 0022-1112.s 837 - 852.s doi: 10.1111/j.1095-8649.2007.01345.x.

  • Bjørn, P.A.; Finstad, B; Kristoffersen, Roar; McKinley, R. S.; Rikardsen, Audun. Differences in risks and consequences of salmon louse, Lepeophtheirus salmonis (Kroyer), infestation on sympatric populations of Atlantic salmon, brown trout, and Arctic charr within northern fjords. ICES Journal of Marine Science 2007; Volum 64. ISSN 1054-3139.s 386 - 393.s doi: 10.1093/icesjms/fsl029.

  • Rikardsen, Audun; Diserud, Ola H.; Elliott, J. Malcolm; Dempson, J Brian; Sturlaugsson, Johannes; Jensen, Arne J. The marine temperature and depth preferences of Arctic charr (Salvelinus alpinus) and sea trout (Salmo trutta), as recorded by data storage tags. Fisheries Oceanography 2007; Volum 16. ISSN 1054-6006.s 436 - 447.s doi: 10.1111/j.1365-2419.2007.00445.x.

  • Rikardsen, Audun; Amundsen, Per-Arne; Knudsen, Rune; Sandring, Stig. Seasonal marine feeding and body condition of sea trout (Salmo trutta) at its northern distribution. ICES Journal of Marine Science 2006; Volum 63. ISSN 1054-3139.s 466 - 475.

  • Rikardsen, Audun; Sandring, Stig. Diet and size-selective feeding by escaped hatchery rainbow trout Oncorhynchus mykiss (Walbaum). ICES Journal of Marine Science 2006; Volum 63. ISSN 1054-3139.s 460 - 465.

  • Rikardsen, Audun; Thorstad, EB. External attachment of data storage tags increases probability of being recaptured in nets compared to internal tagging. Journal of Fish Biology 2006; Volum 68. ISSN 0022-1112.s 963 - 968.

  • Rikardsen, Audun; Amundsen, Per-Arne. Pelagic marine feeding of Arctic charr and sea trout. Journal of Fish Biology 2005; Volum 66. ISSN 0022-1112.

  • Rikardsen, Audun H.; Haugland, M.; Bjørn, Pål Arne; Finstad, Bengt; Knudsen, Rune; Dempson, Brian J.; Holst, Jens Christian; Hvidtsten, N.A.; Holm, Marianne. Geographical differences in marine feeding of Atlantic salmon post-smolts in Norwegian fjords. Journal of Fish Biology 2004; Volum 64. ISSN 0022-1112.s 1655 - 1679.s doi: 10.1111/j.1095-8649.2004.00425.

  • Rikardsen, Audun; Svenning, Martin-Arne; Klemetsen, Anders. The relationship between anadromy, parr growth and sex ratio of arctic charr Salvelinus alpinus in a lake in northern Norway. Journal of Fish Biology 1997; Volum 51. ISSN 0022-1112.s 447 - 461.

  • Edvardsen, Roar; Karlsen, Malvin; Heitmann, Arild; Salomonsen, Ole C; Ingvaldsen, Øystein Lunde; Rikardsen, Audun H.; Samuelsen, Roy. Nordlys Aurora Borealis http://northernlightsbook.com/. 2012 ISBN 978-82-93178-03-3.

  • Rikardsen, Audun H.. Villaksen Salamon – og den store reisen. Vigmostad & Bjørke 2012 ISBN 978-82-419-0867-5.

  • Vaaler, Andre; Rikardsen, Audun H.. Villaksen Salomon og den store reisen. Vigmostad & Bjørke 2012 ISBN 978-82-419-0867-5.

  • Hedger, Richard David; Rikardsen, Audun H.; Strøm, John Fredrik; Righton, David; Thorstad, Eva Bonsak; Næsje, Tor. Diving behaviour of Atlantic salmon in the Norwegian and Barents Seas. 50th Aniversary Symposium of the Fisheries Society of the British Isles 2017-07-03 - 2017-07-07 2017.

  • Davidsen, Jan Grimsrud; Flaten, Anne Cathrine; Thorstad, Eva Bonsak; Sjursen, Aslak Darre; Rønning, Lars; Whoriskey, Frederick G.; Rikardsen, Audun H.; Finstad, Bengt; Arnekleiv, Jo Vegar. Marine vandringer og habitatbruk til postsmolt av sjøørret i Hemnfjorden, Sør-Trøndelag. 2015 (2015-9) ISBN 978-82-8322-058-2. ISSN 1894-0056.

  • Davidsen, Jan Grimsrud; Eldøy, Sindre Håvarstein; Flaten, Anne Cathrine; Bordeleau, Xavier; Sjursen, Aslak Darre; Thorstad, Eva Bonsak; Whoriskey, Frederick G.; Aarestrup, Kim; Næsje, Tor; Rønning, Lars; Rikardsen, Audun H.; Arnekleiv, Jo Vegar. Marine migration and habitat use of sea trout Salmo trutta in two fjords in Central Norway. 2nd international sea trout symposium 2015-10-20 - 2015-10-22 2015.

  • Flaten, Anne Cathrine; Davidsen, Jan Grimsrud; Thorstad, Eva Bonsak; Rikardsen, Audun H.. Migration and habitat use of sea trout post-smolts Salmo trutta in a Norwegian fjord system. (fulltekst) 2015.

  • Davidsen, Jan Grimsrud; Eldøy, Sindre Håvarstein; Sjursen, Aslak Darre; Rønning, Lars; Thorstad, Eva Bonsak; Næsje, Tor; Aarestrup, Kim; Whoriskey, F.; Rikardsen, Audun H.; Daverdin, Marc; Arnekleiv, Jo Vegar. Habitatbruk og vandringer til sjøørret i Hemnfjorden og Snillfjorden. Foredrag for Formandskapet i Hemne Kommune 2015-02-10 - 2015.

  • Rikardsen, Audun H.. NRK nett - Fotopris til professor i Europamesterskapet i naturfoto: http://www.nrk.no/nordnytt/sjekk-den-orna_-1.11321965. 2014.

  • Righton, David; Rikardsen, Audun H.; Hedger, Richard David; Chittenden, Cedar; Davidsen, Jan Grimsrud; Økland, Finn; Næsje, Tor; Gargan, Patrik; Thorstad, Eva Bonsak; Halttunen, Elina; Aarestrup, Kim; McKinley, Robert S.. Spatial segregation of ocean migrating Atlantic salmon. The 5th Bio-logging science symposium 2014-09-22 - 2014-09-26 2014.

  • Davidsen, Jan Grimsrud; Eldøy, Sindre Håvarstein; Sjursen, Aslak Darre; Rønning, Lars; Thorstad, Eva Bonsak; Næsje, Tor; Aarestrup, K.; Whoriskey, F.; Rikardsen, Audun H.; Daverdin, Marc; Arnekleiv, Jo Vegar. Habitatbruk og vandringer til sjøørret i Hemnfjorden og Snillfjorden. (fulltekst) 2014 (6) ISBN 978-82-7126-996-8. ISSN 1894-0056.

  • Thorstad, Eva Bonsak; Rikardsen, Audun H.; Alp, Ahmet; Økland, Finn. The Use of Electronic Tags in Fish Research – An Overview of Fish Telemetry Methods. (data) Turkish Journal of Fisheries and Aquatic Sciences 2013; Volum 13. ISSN 1303-2712.s 881 - 896.s doi: 10.4194/1303-2712-v13_5_13.

  • Rikardsen, Audun H.. “Mitt ville og våte Svalbardeventyr” (6s)- Natur og Foto nr 1 2013:. 2013.

  • Rikardsen, Audun H.. Årets naturbilde 2013 - Nettmagasinet Harvest: http://harvest.as/artikkel/arets-naturfoto. 2013.

  • Rikardsen, Audun H.. Профессор потеснил фотографов благодаря орлану (Artikkel i Metro (Moskva største avis, Russland): Om kombinasjonen forskning og foto (på russisk!): http://www.metronews.ru/novosti/professor-stal-luchshim-fotografom-blagodarja-orlanu/TpomkB---TkluSxQiXRU/. 2013.

  • Rikardsen, Audun H.. Slik tok han den høythengende fotoprisen (Nordlys: papirutgave og nett): http://www.nordlys.no/nyheter/article6606058.ece. 2013.

  • Rikardsen, Audun H.. Lærer å ta bilder (Byavisa/Nordlys, pair og nett): http://www.nordlys.no/nyheter/byavisa_tromso/article6941007.ece. 2013.

  • Rikardsen, Audun H.. Kvalene er tilbake (papirutgave og nett) http://www.nordlys.no/nyheter/article6968873.ece. 2013.

  • Rikardsen, Audun H.. Debatten raser mot lille Salomon .. Men barneboken er faktisk formidling av ny forskning Avisa Nordlys: Barnebok i konflikt med oppdrettsnæringa: http://www.nordlys.no/nyheter/article6463167.ece. 2013.

  • Rikardsen, Audun H.. Satellittmerker kval utenfor Tromsø. Avisa Nordlys (pairutgave og nett): http://www.nordlys.no/nyheter/article7016050.ece. 2013.

  • Rikardsen, Audun H.. Denne sjørøya ga Audun tittelen Norges beste naturfotograf. Nordlys (avis og nett): Foto og forskning: http://www.nordlys.no/nyheter/article6995258.ece. 2013.

  • Rikardsen, Audun H.. Naturfotograf fra Tromsø tok storeslem i NM. Nordlys (papirutgave og nett): Foto og forskning: http://www.nordlys.no/nyheter/article6997083.ece (+ femsiders reportasje i papirutgaven). 2013.

  • Rikardsen, Audun H.; Biuw, Martin. Dagbladet november 2013: To siders artikkel om kvalforskning (papirutgave, se pdf). 2013.

  • Rikardsen, Audun H.. Professor brukte tre år på å ta dette bildet - http://www.aftenposten.no/viten/Professoren-brukte-tre-ar-pa-a-ta-dette-bildet-7370649.html#.Uukq80fKxjs. 2013.

  • Rikardsen, Audun H.. Flørtende kval (VG papirutgave og VGTV): http://www.vg.no/nyheter/innenriks/artikkel.php?artid=10148934. 2013.

  • Rikardsen, Audun H.. Kvalfart til Kvaløya: Papirartikkel (tre helsider) og VG+ TV og artikkel: http://pluss.vg.no/2013/11/22/1430/1430_22641921. 2013.

  • Rikardsen, Audun H.. NRK - Barnebok provoserer oppdrettsnæringa (se svaret mitt i Nordlys!): http://www.nrk.no/nordland/barnebok-skaper-reaksjoner-1.10883241. 2013.

  • Rikardsen, Audun H.. NRK Radio – villaksen Salomon: Forskning og foto: http://radio.nrk.no/serie/distriktsprogram-troms-og-finnmark/dkfi02011813/21-11-2013. 2013.

  • Rikardsen, Audun H.. NRK nett - Svømmer med knølhvaler: http://www.nrk.no/video/tett_pa_knolhvalen/BD61B45B59BE8D10/emne/Audun%20Rikardsen/. 2013.

  • Rikardsen, Audun H.. NRK - Uvanlig studentekskursjon (NRK- Nordnytt): http://tv.nrk.no/serie/distriktsnyheter-nordnytt/dktr99100413/04-10-2013 (10 min og 10 sek ut i sendinga). 2013.

  • Rikardsen, Audun H.. NRK - Ut i Naturen (kval i mørketid): http://tv.nrk.no/serie/ut-i-naturen/dvna60000113/26-02-2013. 2013.

  • Rikardsen, Audun H.; Acquarone, Mario. Hvalfart til Kvaløya. 2013.

  • Rikardsen, Audun H.. Kommer helt iopp til båten min http://www.nrk.no/nyheter/distrikt/troms_og_finnmark/1.10863600. 2013.

  • Rikardsen, Audun H.. Fotopris gikk til Professor ved Universitetet i Tromsø. 2013.

  • Rikardsen, Audun H.. NRK Ut i Naturen. Hvaleventyr utenfor Tromsø. 2013.

  • Rikardsen, Audun H.. Laks og forskere på Grønlandseventyr. Julebord for administrasjonen ved BFE 2012-12-17 - 2012-12-17 2012.

  • Rikardsen, Audun H.. Arktisk kyst. Fotomesse 2012-05-10 - 2012-05-12 2012.

  • Rikardsen, Audun H.. Min vei til NNPC…. Prisutdeling NNPC 2012-03-26 - 2012-03-26 2012.

  • Rikardsen, Audun H.. Vår arktiske foto- og lekeplass. BioFoto Midt-Norge 2012-11-18 - 2012-11-18 2012.

  • Rikardsen, Audun H.. "Friluftsliv i Tromsø" (http://debutuka.net/node/280). DebutUka 2012-08-16 - 2012-08-16 2012.

  • Rikardsen, Audun H.. Fotopris til Steigen-mann. 2012.

  • Rikardsen, Audun H.. Ukas utflytter - Audun Rikardsen. 2012.

  • Rikardsen, Audun H.. Debatten raser mot lille Salomon http://www.nordlys.no/nyheter/article6463167.ece. 2012.

  • Rikardsen, Audun H.; Bjerke, Jarle Werner. Bjerke og Rikardsen vant Framsenterprisene http://uit.no/nyheter/artikkel?p_document_id=321468. 2012.

  • Rikardsen, Audun H.. Satellite Tags Help Unravel Mysteries of Atlantic Salmon Migration at Sea http://www.nefsc.noaa.gov/press_release/2012/SciSpot/SS1202/. 2012.

  • Rikardsen, Audun H.. Atlantic salmon: A polar and deep water explorer. Norsk polarinstitutts seminarserie 2012-10-19 - 2012-10-19 2012.

  • Rikardsen, Audun H.. Audun Rikardsen på ut i Naturen http://uit.no/ansatte/organisasjon/nyhetsartikkel?p_document_id=302660&p_dimension_id=88165&p_menu=28723&p_lang=2. 2012.

  • Rikardsen, Audun H.. Man and nature - European natore photography contest (GDT) http://wodumedia.com/gdt-european-wildlife-photographer-of-the-year-2012. 2012.

  • Rikardsen, Audun H.. Kvalfest på yttersia. 2012.

  • Rikardsen, Audun H.. Jakter kval med kamera. 2012.

  • Rikardsen, Audun H.. Fotopris til Tromsømann http://www.nordlys.no/nyheter/article5987403.ece. 2012.

  • Rikardsen, Audun H.. Hjertet mitt gjorde et ekstra hopp http://www.nrk.no/nyheter/distrikt/troms_og_finnmark/1.8397954. 2012.

  • Rikardsen, Audun H.. Tagging wild salmon into the deep north http://sciencenordic.com/tagging-wild-salmon-deep-north. 2012.

  • Rikardsen, Audun H.. Opplevde kvaleventyr på yttersia. 2012.

  • Rikardsen, Audun H.. Måtte kjøre sikksakk mellom 100 kjempehvaler http://www.nordlys.no/nyheter/article6341970.ece. 2012.

  • Rikardsen, Audun H.. Det var mitt "lucky moment". 2012.

  • Borch, Trude Kristin; Ferter, Keno; Rikardsen, Audun H.; Vølstad, Jon Helge. Et bærekraftig og etisk turistfiske. Fiskeribladet 2012. ISSN 0805-5289.

  • Rikardsen, Audun H.. Hvordan fanger man nordlyset?. Villmarksliv 2012 (3). ISSN 0332-7442.

  • Rikardsen, Audun H.. Se nordens beste naturbilder http://ut.no/artikkel/1.8051931. 2012.

  • Rikardsen, Audun H.. Lakseprofessor er årets nordiske naturfotograf http://www.akam.no/artikler/lakseprofessor-er-arets-nordiske-naturfotograf/107937. 2012.

  • Rikardsen, Audun H.. Årets nordiske naturfotograf kåret - ttp://www.fotomagasinet.no/2012/03/arets-nordiske-naturfotograf-karet/. 2012.

  • Rikardsen, Audun H.. professor ble årets nordiske naturfotograf. 2012.

  • Rikardsen, Audun H.. Spekkhugger ville gi dykker en sild!. 2012.

  • Rikardsen, Audun H.. Forskning har blitt til barnebok om laks. 2012.

  • Rikardsen, Audun H.. Undervannsfilming av spekkhugger. 2012.

  • Rikardsen, Audun H.. Jakter kval med kamera - under vann!. 2012.

  • Rikardsen, Audun H.. NRK En naturlig helaften - Satelittmerking av laks (tilbakeblikk). 2012.

  • Rikardsen, Audun H.. NRK Ut i Naturen - Forskning på havets dronning, kveita. 2012.

  • Rikardsen, Audun H.. Laks minutt for minutt. NRK Ut i Naturen Se 1 t 20 min og 45 sek ut i sendingen: http://www.nrk.no/nett-tv/klipp/850583/. 2012.

  • Jensen, Jenny; Rikardsen, Audun H.; Thorstad, Eva Bonsak. Spatial niche segregation of Arctic charr and brown trout during their marine feeding migration. International Char Symposium 2012-09-11 - 2012-09-18 2012.

  • Thorstad, Eva *; Rikardsen, Audun; Davidsen, Jan Grimsrud; Chittenden, Cedar; Fiske, Peder; Staldvik, Frode. Nytt fra lakseforskningen. Lakseseminar for elver i Nord-Trøndelag 2011-02-05 - 2011.

  • Rikardsen, Audun H.. Tracking Atlantic salmon migration at sea by use of pop-up satellite tags – surprises, world records and mysteries..!. Salmon at Sea: Scientific Advances and their Implications for Management 2011-10-11 - 2011-10-13 2011.

  • Chittenden, Cedar; Rikardsen, Audun H.; Fauchald, Per; Jensen, Jenny; Halttunen, Elina; Davidsen, Jan Grimsrud. Tracking Fish in the Open Ocean and Polar Regions. Seminar Series 2011-10-21 - 2011.

  • Chittenden, Cedar; Rikardsen, Audun H.; Fauchald, Per; Davidsen, Jan Grimsrud; Halttunen, Elina; Jensen, Jenny. Tracking Fish in the Open Ocean and Polar Regions. First International Conference on Fish Telemetry 2011-06-12 - 2011-06-18 2011.

  • Uglem, Ingebrigt; Økland, Finn; Rikardsen, Audun H.. Overlevelse, spredning og vandring i sjøen for simulert rømt lakseparr og smolt fra et landbasert settefiskanlegg. (data) 2011 (705) ISBN 978-82-426-2292-1. ISSN 1504-3312.

  • Ugedal, Ola; Næsje, Tor; Saksgård, Laila M.; Thorstad, Eva Bonsak; Jensen, Jenny; Chittenden, Cedar; Cowley, Paul D.; Rikardsen, Audun H.. Fiskebiologiske undersøkelser i Altaelva 2010. 2011 (728) ISBN 978-82-426-2315-7. ISSN 1504-3312.

  • Jensen, Jenny; Rikardsen, Audun H.. The use of ambient temperature to study seasonal migrations of anadromous Arctic charr and sea trout. 1st International conference on Fish Telemetry 2011-06-12 - 2011-06-18 2011.

  • Halttunen, Elina; Rikardsen, Audun H.; Ugedal, Ola; Thorstad, Eva Bonsak; Jensen, Jenny; Næsje, Tor. The significance of repeat spawning to the production and stability of an Atlantic salmon population. 1st International Conference on Fish Telemetry 2011-06-12 - 2011-06-18 2011.

  • Halttunen, Elina; Rikardsen, Audun H.; Aas, Øystein. Staying alive - the survival and importance of Atlantic salmon post-spawners. 2011 ISBN 978-82-8266-013-6.

  • Davidsen, Jan Grimsrud; Thorstad, Eva Bonsak; Baktoft, Henrik; Aune, S.; Økland, Finn; Rikardsen, Audun H.. Vandringsatferd hos sjøørret i estuarie og nedre deler av Vefsna under dosering av CFT-Legumin (rotenon). (fulltekst) 2011; Volum 2011 (8) ISBN 978-82-7126-936-4. ISSN 1504-503X.

  • Davidsen, Jan Grimsrud; Finstad, B.; Økland, F.; Thorstad, E.B.; Mo, TA; Rikardsen, Audun H.. Early marine migration of European silver eel Anguilla anguilla in northern Norway. 1st international conference on fish telemetry 2011-06-13 - 2011-06-18 2011.

  • Thorstad, Eva B.; Finstad, Bengt; Davidsen, Jan Grimsrud; Uglem, Ingebrigt; Rikardsen, Audun; Kroglund, F.; Økland, Finn. Laksesmolten fra elv til fjord: med tilbedende og kritisk blikk på telemetriundersøkelser. Seminar om smoltens økologi hos laks, sjøaure og sjørøye 2010-03-24 - 2010.

  • Aas-Hansen, Øyvind; Stien, Lars Helge; Gytre, Trygve; Tennøy, Torodd; Bjørnsen, Jan Eyolf; Evensen, Tor Hatten; Sæther, Bjørn-Steinar; Damsgård, Børge; Brataas, Ragnar; Finne, Dag Einar; Koren, Christian; Alfredsen, Jo Arve; Rikardsen, Audun H.; Kristiansen, Tore S. Ny teknologi for overvåking av oppdrettsmiljø og fiskevelferd i oppdrettsmerder. Sluttrapport for FHF prosjekt 900085. (fulltekst) 2010 (3/2010) ISBN 978-82-7251-743-3. ISSN 1890-579X.

  • Rikardsen, Audun H.. NRK Nordnytt 14. januar 2010: Lakselus kan øke i nord (direktesending): http://www.nrk.no/nyheter/distrikt/troms_og_finnmark/1.6945274. 2010.

  • Rikardsen, Audun H.. NRK dagsrevyen: http://www.nrk.no/nett-tv/indeks/212735/. 2010.

  • Rikardsen, Audun H.. NRK Ut i Naturen 12. oktober: http://www.nrk.no/nett-tv/klipp/674321/ (ca 19:15 ut i sendingen, laksens vandring del 1). 2010.

  • Rikardsen, Audun H.. NRK Ut i naturen (en naturlig helaften 21.12.2010) Laksens vandringer del 2 (33.20 ut i programmet) http://www.nrk.no/nett-tv/klipp/695124/. 2010.

  • Ugedal, Ola; Næsje, Tor F.; Thorstad, Eva B.; Saksgård, Laila; Jensen, Jenny; Chittenden, Cedar; Cowley, Paul; Rikardsen, Audun H.. Fiskebiologiske undersøkelser i Altaelva 2009. 2010 (585) ISBN 978-82-426-2162-7. ISSN 1504-3312.

  • Jensen, Jenny; Rikardsen, Audun H.; Næsje, Tor F.; Thorstad, Eva B.; Halttunen, Elina; Suhr, Amund; Leinan, Ivar. Fangstrater, oppvandring og fordeling av laks i Altaelva. 2010 (595) ISBN 978-82-426-2172-6. ISSN 1504-3312.

  • Halttunen, Elina; Rikardsen, Audun; Chittenden, Cedar; Davidsen, Jan Grimsrud; Thorstad, Eva B.; Næsje, Tor Fredrik; Jensen, Jenny Lovisa Alexandra. Staying alive - the importance of repeat spawners for the production of Altantic Salmon. intern seminar 2010-03-01 - 2010.

  • Halttunen, Elina; Rikardsen, Audun; Chittenden, Cedar; Davidsen, Jan Grimsrud; Thorstad, Eva B.; Næsje, Tor Fredrik; Jensen, Jenny Lovisa Alexandra. Staying alive - the importance of repeat spawners for the production of Altantic Salmon. intern seminar 2010-01-19 - 2010.

  • Halttunen, Elina; Rikardsen, Audun; Næsje, Tor; Jensen, Jenny Lovisa Alexandra; Thorstad, Eva B.. The return rate of Atlantic salmon repeat spawners and their significance to production. Estimating Fitness of Stream Fishes in the Wild: Combining Mark-Recapture and Genotype-Based Pedigree Data 2010-05-22 - 2010-05-23 2010.

  • Halttunen, Elina; Jensen, Jenny Lovisa Alexandra; Davidsen, Jan Grimsrud; Næsje, Tor; Thorstad, Eva B.; Chittenden, Cedar Marget; Rikardsen, Audun. The riverine survival and behaviour of post spawned Atlantic salmon. Advances in the Population Ecology of Stream Salmonids, International symposium 2010-05-17 - 2010-05-21 2010.

  • Chittenden, Cedar Marget; Halttunen, Elina; Davidsen, Jan Grimsrud; Jensen, Jenny Lovisa Alexandra; Rikardsen, Audun; Pedersen, ole petter; McKinley, Scott. Survivor North Pacific: Can Coho Outlast?. Centre for Aquaculture and Environmental Research 2010-07-10 - 2010-07-10 2010.

  • Rikardsen, Audun; Davidsen, Jan Grimsrud; Chittenden, Cedar Marget; Økland, Finn; Næsje, Tor; Thorstad, Eva B.; Halttunen, Elina; McKinley, Scott; Aarestrup, Kim. Open ocean migration behaviour of northern Atlantic salmon (Salmo salar) – as recorded by satellite pop-up and standard archival tags. 8th Conference on Fish Telemetry 2009-09-14 - 2009-09-18 2009.

  • Chittenden, Cedar Marget; Rikardsen, Audun; Skilbrei, Ove; Davidsen, Jan Grimsrud; Halttunen, Elina; McKinley, Scott. Dispersal behaviour and recapture rates of escaped adult farmed Atlantic salmon in northern Norway. 8th Conference on Fish Telemetry 2009-09-14 - 2009-09-18 2009.

  • Halttunen, Elina; Rikardsen, Audun; Chittenden, Cedar Marget; Davidsen, Jan Grimsrud; Thorstad, Eva B.; Næsje, Tor; Jensen, Jenny Lovisa Alexandra. Staying alive - the importance of repeat spawners for the production of Altantic Salmon. Earth and Ocean Sciences seminar series 2009-12-09 - 2009.

  • Halttunen, Elina; Rikardsen, Audun; Chittenden, Cedar Marget; Davidsen, Jan Grimsrud; Thorstad, Eva B.; Næsje, Tor; Jensen, Jenny Lovisa Alexandra. Staying alive – the importance of repeat spawners to the production of Atlantic salmon. Fisheries Research Seminar series FISH500 2009-12-04 - 2009.

  • Halttunen, Elina; Rikardsen, Audun; Chittenden, Cedar Marget; Davidsen, Jan Grimsrud; Thorstad, Eva B.; Næsje, Tor; Jensen, Jenny Lovisa Alexandra. Staying alive - the importance of repeat spawners to the porduction of Atlantic salmon. PBS 2009 seminar series 2009-11-27 - 2009.

  • Halttunen, Elina; Rikardsen, Audun; Thorstad, EB; Næsje, Tor; Jensen, Jenny Lovisa Alexandra; Aas, Øystein. Is the releasing of angled Atlantic salmon kelts a successful management strategy?. 8th Conference on Fish Telemetry held in Europe 2009-09-14 - 2009-09-18 2009.

  • Davidsen, Jan Grimsrud; Rikardsen, Audun; Halttunen, Elina; Mitamura, H; Thorstad, EB; Præbel, Kim; Skardhamar, Jofrid; Næsje, Tor. Homing behaviour of Atlantic salmon during final marine phase and river entry. 8th Conference on Fish Telemetry held in Europe 2009-09-14 - 2009-09-18 2009.

  • Davidsen, Jan Grimsrud; Rikardsen, Audun; Halttunen, Elina; Thorstad, EB; Økland, F.; Letcher, B.H,; Skardhamar, Jofrid; Næsje, Tor. Migratory behaviour and survival rates of wild northern Atlantic salmon Salmo salar post-smolts: effects of environmental factors. 8th Conference on Fish Telemetry held in Europe 2009-09-14 - 2009-09-18 2009.

  • Thorstad, EB; Finstad, B.; Økland, F.; Bjørn, P.A.; Davidsen, Jan Grimsrud; Jensen, AJ; McKinley, R. S.; Rikardsen, Audun; Plantalech, Nùria; SivertsgÅrd, rolf. I smoltens kjøvann. Nytt om vandring av postsmolt i fjorder. Fiskesymposiet 2008 2008-02-13 - 2008.

  • Kristoffersen, Roar; Winger, Anja C; Knudsen, Rune; Rikardsen, Audun. Gyrodactylus salaris - laksedreper og røyeplager. Ottar 2008; Volum 5 (273). ISSN 0030-6703.s 69 - 72.

  • Rikardsen, Audun; Davidsen, Jan Grimsrud; Halttunen, Elina; Jensen, Jenny; Gjelland, Karl øystein. Datateknologi avslører fiskens hemmligheter!. Ottar 2008; Volum 273 (5). ISSN 0030-6703.s 45 - 51.

  • Halttunen, Elina; Rikardsen, Audun; Davidsen, Jan Grimsrud. Salmon Kelt Migration in a North-Norwegian Fjord. Nowpas-network meeting 2008-02-14 - 2008-02-17 2008.

  • Thorstad, EB; Finstad, B.; Økland, F.; Bjørn, P.A.; Davidsen, Jan Grimsrud; Jensen, AJ; McKinley, R. S.; Rikardsen, Audun; Plantalech, Nùria; SivertsgÅrd, rolf. Smolten er så liten og havet er så stort - vi følger postsmoltens vandringer i norske fjordsystemer. Lunsjseminar, NINA, 2008-04-23 - 2008-04-23 2008.

  • Halttunen, Elina; Rikardsen, Audun; Davidsen, Jan Grimsrud. Fjord and open ocean migrations of Atlantic salmon kelts. Tagging and Tracking Marine Fish with Electronic Devices 2007-10-08 - 2007-10-11 2007.

  • Rikardsen, Audun H.. NRK Kveldsnytt (om rømt oppdrettslaks): http://www1.nrk.no/nett-tv/indeks/97988 (ca 1:30 ut i sendingen). 2007.

  • Rikardsen, Audun; Kanck, Marte; Winger, Anja; Kristoffersen, Roar; Kanstad Hansen, Øyvind; Knudsen, Rune; Johnsen, Bjørn Ove. Spredningsveier for Gyrodactylus salaris østfra: Undersøkelse av infeksjon på fisk over lakseførende strekning i Signaldalsvassdraget. Side 16 - 20 i Johnsen, B.O. (red.): Økologiske undersøkelser av Gyrodactylus salaris og fisk i norske vassdrag. Årsrapport 2006. 2007 (183).

  • Davidsen, Jan Grimsrud; Rikardsen, Audun; Økland, F.; Thorstad, EB. Mapping short and long term migration pattern of North Norwegian Atlantic salmon at sea. NOWPAS annual workshop 2007 2007-03-22 - 2007-03-25 2007.

  • Davidsen, Jan Grimsrud; Plantalech, Nùria; Økland, F.; SivertsgÅrd, rolf; McKinley, R. S.; Rikardsen, Audun. Change in swimming depths of Atlantic salmon post-smolts in relation to light intensity. The 7th conference on fish telemetry held in Europe 2007-06-17 - 2007-06-21 2007.

  • Kristoffersen, Roar; Rikardsen, Audun; Langseth, Per E.. Occurrence and possible effects of salmon lice in a population of anadromous Arctic charr in northern Norway. 5th International Charr Symposium 2006-08-02 - 2006-08-05 2006.

  • Kristoffersen, Roar; Rikardsen, Audun; Winger, Anja; Adolfsen, Pål; Knudsen, Rune. Røye som langtidsvert og smittereservoar for Gyrodactylus salaris i Skibotnelva i Troms. 2005 (36) ISBN 82-426-1559-4. ISSN 1504-3312.

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