Universitetet i Tromsø - Startsida Universitetet i Tromsø - Startsida
 
Department of Arctic and Marine Biology

Faculty of Biosciences, Fisheries and Economics


In Norwegian


Stokkan, Karl-Arne

Department of Arctic and Marine Biology

Phone
(+47) 776 44870

E-mail

Office/visiting address
Arktisk Biologi
AB 3.114

Mobile private
41695235

Publications in Cristin
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Publications in CRIStin

  • John, Lees; Folkow, Lars; Stokkan, Karl-Arne; Jonathan, Codd. The metabolic cost of incline locomotion in the Svalbard rock ptarmigan (Lagopus muta hyperborea): the effects of incline grade and seasonal fluctuations in body mass. Journal of Experimental Biology 2013; Volum 216. ISSN 0022-0949.s 1355 - 1363.s doi: 10.1242/jeb.078709.
  • Lees, John J; Nudds, Robert L.; Folkow, Lars; Stokkan, Karl-Arne; Codd, Jonathan R. Understanding sex differences in the cost of terrestrial locomotion. Proceedings of the Royal Society of London. Biological Sciences 2012; Volum 279 (1729). ISSN 0962-8452.s 826 - 832.s doi: 10.1098/rspb.2011.1334.
  • Lees, John J; Stokkan, Karl-Arne; Folkow, Lars; Codd, Jonathan R. Locomotor development in the Svalbard rock ptarmigan (Lagopus muta hyperborea). Polar Biology 2012; Volum 35 (6). ISSN 0722-4060.s 867 - 874.s doi: 10.1007/s00300-011-1131-x.
  • Wareing, K; Tickle, PG; Stokkan, Karl-Arne; Codd, JR; Sellers, William R.. The musculoskeletal anatomy of the reindeer (Rangifer tarandus): fore- and hindlimb. Polar Biology 2011; Volum 34 (10). ISSN 0722-4060.s 1571 - 1578.s doi: 10.1007/s00300-011-1017-y.
  • Nudds, RL; Folkow, Lars; Lees, JJ; Tickle, PG; Stokkan, Karl-Arne; Codd, JR. Evidence for energy savings from aerial running in the Svalbard rock ptarmigan (Lagopus muta hyperborea). Proceedings of the Royal Society of London. Biological Sciences 2011; Volum 278 (1718). ISSN 0962-8452.s 2654 - 2661.s doi: 10.1098/rspb.2010.2742.
  • Hogg, Christopher; Neveu, Magella; Stokkan, Karl-Arne; Folkow, Lars; Cottrill, Phillippa; Douglas, Ronald; Hunt, David M; Jeffery, Glen. Arctic reindeer extend their visual range into the ultraviolet. Journal of Experimental Biology 2011; Volum 214 (12). ISSN 0022-0949.s 2014 - 2019.s doi: 10.1242/jeb.053553.
  • Lu, Weiqun; Meng, Qing-Jun; Tyler, N. J. C.; Stokkan, Karl-Arne; Loudon, Andrew S.I.. A Circadian Clock Is Not Required in an Arctic Mammal. Current Biology 2010; Volum 20 (6). ISSN 0960-9822.s 533 - 537.s doi: 10.1016/j.cub.2010.01.042.
  • Lees, J; Nudds, R; Stokkan, Karl-Arne; Folkow, Lars; Codd, J. Reduced Metabolic Cost of Locomotion in Svalbard Rock Ptarmigan (Lagopus muta hyperborea) during Winter. PLoS ONE 2010; Volum 5 (11). ISSN 1932-6203.s doi: 10.1371/journal.pone.0015490.
  • Silverin, Bengt; Wingfield, John; Stokkan, Karl-Arne; Massa, Renato; Järvinen, Antero; Andersson, Nils-Åke; Lambrechts, Marcel; Sorace, Alberto; Blomqvist, Donald. Ambient temperature effects on photo induced gonadal cycles and lehormonal secretion patterns in Great Tits from three different breeding latitudes. Hormones and Behavior 2008; Volum 54. ISSN 0018-506X.s 60 - 68.s doi: 10.1016/j.yhbeh.2008.01.015.
  • Stokkan, Karl-Arne; van Oort, Bob Eric H.; Tyler, N. J. C.; Loudon, Andrew S.I.. Adaptations for life in the Arctic: evidence that melatonin rhythms in reindeer are not driven by a circadian oscillator but remain acutely sensitive to environmental photoperiod. Journal of Pineal Research 2007; Volum 43. ISSN 0742-3098.s 289 - 293.s doi: 10.1111/j.1600-079X.2007.00476.x.
  • van Oort, Bob Eric H.; Tyler, N. J. C.; Gerkema, Menno P; Folkow, Lars; Stokkan, Karl-Arne. Where clocks are redundant: weak circadian mechanisms in reindeer living under polar photic conditions. Die Naturwissenschaften 2007; Volum 94. ISSN 0028-1042.s doi: DOI 10.1007/s00114-006-0174-2.
  • van Oort, Bob Eric H.; Tyler, N. J. C.; Gerkema, M.P.; Folkow, Lars; Blix, Arnoldus S; Stokkan, Karl-Arne. Circadian organization in reindeer. Nature 2005; Volum 438. ISSN 0028-0836.s 1095 - 1096.
  • van Oort, Bob Eric H.; Tyler, Nicholas; Storeheier, Pål Vegar; Stokkan, Karl-Arne. The performance and validation of a data logger for long-term determination of activity in free-ranging reindeer, Rangifer tarandus L.. Applied Animal Behaviour Science 2004; Volum 89 (3-4). ISSN 0168-1591.s 299 - 308.s doi: 10.1016/j.applanim.2004.06.009.
  • Stokkan, Karl-Arne; van Oort, Bob Eric H.; Tyler, Nicholas. Biological rhythms in reindeer. Journal of Animal and Feed Sciences 2004; Volum 13. ISSN 1230-1388.s 715 - 716.
  • Stokkan, Karl-Arne; Aarseth, Jo Jorem. Melatonin reduces noradrenaline-induced vasoconstriction in the uterine artery of pregnant hooded seals (Chrystophora cristata). Pflügers Archiv: European Journal of Physiology 2004; Volum 447. ISSN 0031-6768.s 405 - 407.
  • Aarseth, Jo Jorem; Stokkan, Karl-Arne. Quantitative differences in the pineal ultrastructure of perinatal and adult harp (Phoca groenlandica) and hooded seals (Cystophora cristata).. Journal of Pineal Research 2003; Volum 35. ISSN 0742-3098.s 188 - 195.
  • Aarseth, Jo Jorem; Van't hof, T j; Stokkan, Karl-Arne. Melatonin is rhythmic in newborn seals exposed to continuous light.. Journal of Comparative Physiology. B, Biochemical, Systemic, and Environmental Physiology 2003; Volum 173. ISSN 0174-1578.s 37 - 42.
  • Reierth, eirik; Stokkan, Karl-Arne. Biological rhythms in Arctic animals. 2002 ISBN 81-7319-385-1.s 216 - 223.
  • Davidson, AJ; Stokkan, karl-arne; Yamazaki, S; Menaker, M. Food-anticipatory activity and liver per1-luc activity in diabetic transgenic rats. Physiology and Behavior 2002; Volum 76. ISSN 0031-9384.s 21 - 26.
  • Stokkan, Karl-Arne; Yamazaki, S; Tei, H; Sakaki, Y; Menaker, M. Entrainment of the circadian clock in the liver by feeding.. Science 2001; Volum 291. ISSN 0036-8075.s 490 - 493.
  • Aarseth, Jo J; Nordøy, Erling Sverre; Stokkan, Karl-Arne. Melatonin potentiates the vasoconstrictive effect of noradrenaline in renal artery from newborn hooded seals (Cystophora cristata) and harp seals (Phoca groenlandica).. Journal of Comparative Physiology. B, Biochemical, Systemic, and Environmental Physiology 2001; Volum 171. ISSN 0174-1578.s 491 - 496.
  • Van Oort, B. E. H.; Tyler, Nicholas; Reierth, E.; Stokkan, Karl-Arne. Biological rhythms in Arctic vertebrates.. Rangifer 2000; Volum 20. ISSN 0333-256X.s 99 - 112.
  • Reierth, eirik; Van't hof, T j; Stokkan, Karl-Arne. Seasonal and daily variation in plasma melatonin in the high-Arctic Svalbard ptarmigan (Lagopus mutus hyperboreus).. Journal of Biological Rhythms 1999; Volum 14. ISSN 0748-7304.s 314 - 319.
  • Reierth, eirik; Stokkan, Karl-Arne. Activity rhythms in high-Arctic Svalbard ptarmigan.. Canadian Journal of Zoology 1998; Volum 7. ISSN 0008-4301.s 2031 - 2039.
  • Reierth, eirik; Stokkan, Karl-Arne. Dual Entrainment by Light and Food in the Svalbard Ptarmigan (Lagopus mutus hyperboreus). Journal of Biological Rhythms 1998; Volum 13. ISSN 0748-7304.s 393 - 402.
  • Stokkan, Karl-Arne; Lindgård, Kjell; Reierth, eirik. Photoperiodic and ambient temperature control of the annual body mass cycle in Svalbard ptarmigan. Journal of Comparative Physiology. B, Biochemical, Systemic, and Environmental Physiology 1995; Volum 165. ISSN 0174-1578.s 359 - 365.
  • Stokkan, Karl-Arne. Pineal functions in newborn seals. Elsevier 1995 ISBN 0-444-82070-1.s 377 - 382.
  • Lindgård, Kjell; Näslund, Svein; Stokkan, Karl-Arne. Annual changes in body mass in captive Svalbard ptarmigan: role of changes in locomotor activity and food intake. Journal of Comparative Physiology. B, Biochemical, Systemic, and Environmental Physiology 1995; Volum 165. ISSN 0174-1578.s 445 - 449.
  • Stokkan, Karl-Arne; Vaughan, M.K.; REITER, RJ; Folkow, Lars; Mårtensson, P.E.; Sager, Georg; Lydersen, Christian; Blix, Arnoldus S. Pineal and thyroid functions in newborn seals. General and Comparative Endocrinology 1995; Volum 98. ISSN 0016-6480.s 321 - 331.
  • Stokkan, Karl-Arne; REITER, RJ. Melatonin rhythms in arctic urban residents. Journal of Pineal Research 1994; Volum 16. ISSN 0742-3098.s 33 - 36.
  • Stokkan, Karl-Arne; Tyler, N. J. C.; REITER, RJ. The pineal gland signals autumn to reindeer (Rangifer tarandus tarandus) exposed to the continous daylight of the Arctic summer.. Canadian Journal of Zoology 1994; Volum 72. ISSN 0008-4301.s 904 - 909.
  • Silverin, Bengt; Massa, Renato; Stokkan, Karl-Arne. Photoperiodic adaptation to breeding at different latitudes in great tits. General and Comparative Endocrinology 1993; Volum 90. ISSN 0016-6480.s 14 - 22.
  • Lerchl, A; Stokkan, Karl-Arne; Nonaka, K.O.; Vaughan, M.K.; REITER, RJ. Type II iodothyronine 5'deiodinase in mouse brown adipose tissue is stimulated by a single injection of isoproterenol in an oil/water emulsion. Experimental and clinical endocrinology & diabetes 1993; Volum 101. ISSN 0947-7349.s 197 - 199.
  • Lindgård, Kjell; Le Maho, Y; Groscolas, R; Stokkan, Karl-Arne. Protein utilization during starvation in fat and lean Svalbard ptarmigan (Lagopus mutus hyperboreus). Journal of Comparative Physiology. B, Biochemical, Systemic, and Environmental Physiology 1992; Volum 162. ISSN 0174-1578.s 607 - 613.
  • Stokkan, Karl-Arne. Energetics and adaptations to cold in ptarmigan in winter. Ornis Scandinavica 1992; Volum 23. ISSN 0030-5693.s 366 - 370.
  • Withyachumnarnkul, B; REITER, RJ; Lerchl, A; Nonaka, K.O.; Stokkan, Karl-Arne. Evidence that interferon-gamma alters pineal metabolism both indirectly via sympathetic nerves and directly on the pinealocytes. International journal of biochemistry 1991; Volum 23. ISSN 0020-711X.s 1397 - .
  • REITER, RJ; White, T; Lerchl, A; Stokkan, Karl-Arne; Rodriguez, C. Attenuated nocturnal rise in pineal and serum melatonin in a genetically cardiomyopathic Syrian hamster with a deficient calcium pump. Journal of Pineal Research 1991; Volum 11. ISSN 0742-3098.s 156 - 162.
  • Lerchl, A; REITER, RJ; Howes, K.A.; Nonaka, K.O.; Stokkan, Karl-Arne. Evidence that extremely low frequency Ca2+-cyclotron resonance depress pineal melatonin synthesis in vitro. Neuroscience Letters 1991; Volum 124. ISSN 0304-3940.s 213 - 215.
  • Attia, A.M.; REITER, RJ; Stokkan, Karl-Arne; Mostafa, M.H.; Soliman, S.E.; El-Sebae, A.H.. Parathion (O,O-Dimethyl-O-p-Nitrophenyl Phosphorothioate) induces pineal melatonin synthesis at night. Brain Research Bulletin 1991; Volum 26. ISSN 0361-9230.s 553 - 557.
  • Stokkan, Karl-Arne; REITER, RJ; Nonaka, K.O.; Lerchl, A; Yu, B.P.; Vaughan, M.K.. Food restriction retards aging of the pineal gland. Brain Research 1991; Volum 545. ISSN 0006-8993.s 66 - 72.
  • Stokkan, Karl-Arne; Nonaka, K.O.; Lerchl, A; Vaughan, M.K.; REITER, RJ. Low temperature stimulates pineal activity in Syrian hamsters. Journal of Pineal Research 1991; Volum 10. ISSN 0742-3098.s 43 - 48.
  • Stokkan, Karl-Arne; Vaughan, M.K.; Nonaka, K.O.; Lerchl, A; REITER, RJ. Endocrine and metabolic effects of life-long food restriction in rats. Acta Endocrinologica 1991; Volum 125. ISSN 0001-5598.s 93 - 100.
  • Henden, thale; Stokkan, Karl-Arne; REITER, RJ; Rodriguez, C; Nonaka, K.O.; Lerchl, A; Jones, D.J.. The age-associated reduction in pineal ß-adrenergic receptor density is prevented by life-long food restriction in rats. Biological signals and receptors 1991; Volum 1. ISSN 1422-4933.s 34 - 39.
  • Nonaka, K.O.; REITER, RJ; Withyakumnarnkul, B; Stokkan, Karl-Arne; Lerchl, A. Adenosine effects on the rat pineal gland in vitro: Cyclic adenosine monophosphate levels, N-Acetyltransferase and thyroxine type II 5'-deiodinase activities and melatonin production. Journal of Pineal Research 1991; Volum 11. ISSN 0742-3098.s 1 - 6.
  • Lerchl, A; Nonaka, K.O.; Stokkan, Karl-Arne; REITER, RJ. Marked rapid alterations in nocturnal pineal serotonin metabolism in mice and rats exposed to weak intermittent magnetic fields. Biochemical and Biophysical Research Communications - BBRC 1990; Volum 169. ISSN 0006-291X.s 102 - 108.
  • Lindgård, Kjell; Stokkan, Karl-Arne. Daylength control of food intake and body weight in Svalbard ptarmigan. Ornis Scandinavica 1989; Volum 20. ISSN 0030-5693.s 176 - 180.
  • Stokkan, Karl-Arne; Sharp, P.J.; Dunn, I; Lea, R.W.. Endocrine changes in photostimulated willow ptarmigan and Svalbard ptarmigan. General and Comparative Endocrinology 1988; Volum 70. ISSN 0016-6480.s 169 - 177.
  • Stokkan, Karl-Arne; Sharp, P.J.; Unander, Sigmund. The annual breeding cycle of the high-arctic Svalbard ptarmigan. General and Comparative Endocrinology 1986; Volum 61. ISSN 0016-6480.s 446 - 451.
  • Stokkan, Karl-Arne; Mortensen, Atle; Blix, Arnoldus S. Food intake, feeding rhythm, and body mass regulation in the Svalbard rock ptarmigan. American Journal of Physiology. Regulatory Integrative and Comparative Physiology 1986; Volum 251. ISSN 0363-6119.s R264 - R267.
  • Stokkan, Karl-Arne; Harvey, S; Klandorf, H; Unander, Sigmund; Blix, Arnoldus S. Endocrine changes associated with fat deposition and mobilization in Svalbard ptarmigan. General and Comparative Endocrinology 1985; Volum 58. ISSN 0016-6480.s 76 - 80.
  • Stokkan, Karl-Arne; Sharp, P.J.; Moss, R. Seasonal breeding in grouse and ptarmigan. Hong Kong University Press 1985 ISBN 9622090397.s 711 - 714.
  • Stokkan, Karl-Arne; Sharp, P.J.. The development of photorefractoriness in castrated willow ptarmigan. General and Comparative Endocrinology 1984; Volum 54. ISSN 0016-6480.s 402 - 409.
  • Gaudernack, G; Skorping, Arne; Stokkan, Karl-Arne; Halvorsen, Odd. The role of host immunity on seasonal fluctuations of Elaphostrongylus rangiferii in chronically infected reindeer. Journal of Helminthology 1984; Volum 58. ISSN 0022-149X.s 13 - 18.
  • Stokkan, Karl-Arne; Sharp, P.J.; Moss, R. Development of photorefractoriness in willow ptarmigan (Lagopus lagopus lagopus) and red grouse (Lagopus lagopus scoticus) exposed to different photoperiods. General and Comparative Endocrinology 1982; Volum 46. ISSN 0016-6480.s 281 - 287.
  • Klandorf, H; Stokkan, Karl-Arne; Sharp, P.J.. Plasma T4 and T3 levels during the development of photo-refractoriness in willow ptarmigan exposed to different photoperiods. General and Comparative Endocrinology 1982; Volum 47. ISSN 0016-6480.s 64 - 69.
  • Stokkan, Karl-Arne; Sharp, P.J.. The development of photorefractoriness in male willow ptarmigan (Lagopus lagopus lagopus) after the suppression of photoinduced LH release with implants of testosterone. General and Comparative Endocrinology 1980; Volum 41. ISSN 0016-6480.s 527 - 530.
  • Stokkan, Karl-Arne; Sharp, P.J.. The roles of daylength and the testes in the regulation of plasma LH levels in photosensitive and photorefractory willow ptarmigan (Lagopus lagopus lagopus). General and Comparative Endocrinology 1980; Volum 41. ISSN 0016-6480.s 520 - 526.
  • Stokkan, Karl-Arne; Sharp, P.J.. Seasonal changes in the concentrations of plasma luteinizing hormone and testosterone in willow ptarmigan (Lagopus lagopus lagopus) with observations on the effects of permanent short days. General and Comparative Endocrinology 1980; Volum 40. ISSN 0016-6480.s 109 - 115.
  • Stokkan, Karl-Arne; Steen, J.B.. Age determined feeding behaviour in willow ptarmigan chicks (Lagopus lagopus lagopus). Ornis Scandinavica 1980; Volum 11. ISSN 0030-5693.s 75 - 76.
  • Stokkan, Karl-Arne; Hove, K; Carr, B. Plasma concentrations of testosterone and luteinizing hormone in rutting reindeer bulls. Canadian Journal of Zoology 1980; Volum 28. ISSN 0008-4301.s 2081 - 2083.
  • Stokkan, Karl-Arne. Testosterone and daylength-dependent development of comb size and breeding plumage of male willow ptarmigan (Lagopus lagopus lagopus).. The AUK: A Quarterly Journal of Ornithology 1979; Volum 96. ISSN 0004-8038.s 105 - 115.
  • Stokkan, Karl-Arne. The effect of permanent short days and castration on plumage and comb growth in male willow ptarmigan (Lagopus lagopus lagopus).. The AUK: A Quarterly Journal of Ornithology 1979; Volum 96. ISSN 0004-8038.s 682 - 687.
  • Allen H.M., H.M.; Stokkan, Karl-Arne; Stalsberg, Helge. Egg incubation by a willow grouse cock. Astarte : journal of arctic biology 1978; Volum 11. ISSN 0044-9768.s 1 - 5.
  • Blix, Arnoldus S; Rettedal, A; Stokkan, Karl-Arne. On the elicitation of the diving responses in ducks. Acta Physiologica Scandinavica 1976; Volum 98. ISSN 0001-6772.s 478 - 483.
  • Jeffery, Glen; Hogg, Christopher; Neveu, Magella; Folkow, Lars; Stokkan, Karl-Arne; Hodge, Anne Marie. A skill better than Rudolph's. 2012.
  • Andersen, Lars Åke; Stokkan, Karl-Arne. Strålende gjensyn. 2012.
  • Codd, Jonathan R; Lees, John J; Folkow, Lars; Stokkan, Karl-Arne; Svalbard Science Forum, SSF. Ptarmigans on treadmills. 2011.
  • Stokkan, Karl-Arne. Timing biological rhythms in Arctic animals: clock challenged by an extreme photic environment. Scandinavian Physiological Society Annual Meeting 2011-08-12 - 2011.
  • Sohn, Emily; Stokkan, Karl-Arne. Forget the Nose, 'Rudolph' Has Keen Eyes. 2011.
  • Grønli, Kristen Straumsheim; Stokkan, Karl-Arne. Reinsdyr i Arktis ser i ultrafiolett. 2011.
  • Stokkan, Karl-Arne. Timing of biological rhythms in Arctic animals: clocks challenged by an extreme photic environment. 2nd ”in-house” Symposium at Department of Arctic and Marine Biology 2011-11-16 - 2011-11-16 2011.
  • Stokkan, Karl-Arne. Timing biological rhythms in Arctic animals: clock challenged by an extreme photic environment. Acta Physiologica 2011; Volum 202. ISSN 1748-1708.s 21 - .
  • Stokkan, Karl-Arne; Blix, Arnoldus Schytte. The long days of spring stimulate appetite in reindeer. 13th Arctic Ungulate Conference 2011-08-22 - 2011-08-26 2011.
  • Sundset, Monica Alterskjær; Stokkan, Karl-Arne; Kittl, Beate. Mit Schaufelhuf und Nasenkühling. 2011.
  • Neveu, Magella M; Hogg, Chris R; Stokkan, Karl-Arne; Folkow, Lars; Jeffery, Glen. Seasonal variations in the visual sensitivity of arctic reindeer. Annual visual electrophysiology meeting 2010-11-01 - 2010.
  • Hogg, Chris R; Neveu, Magella M; Stokkan, Karl-Arne; Folkow, Lars; Cottril, P; Douglas, R; Hunt, D; Jeffery, Glen. Arctic reindeer extend their visual sensitivity into the ultraviolet. Annual visual electrophysiology meeting 2010-11-01 - 2010.
  • Stokkan, Karl-Arne. Arctic light, clocks/rhythms, and ophthalmology. XXXVIII Nordic Congress of Ophthalmology 2008-06-14 - 2008-06-17 2008.
  • Stokkan, Karl-Arne. Biological clocks. Telling the time in the Arctic.. Biological Sciences Review 2008; Volum 21 (2). ISSN 0953-5365.s 14 - 17.
  • Stokkan, Karl-Arne. Arctic light, clocks/rhythms, and ophthalmology. ACTA OPHTHALMOLOGICA 2008; Volum 86. ISSN 1755-375X.s 14 - 14.
  • Stokkan, Karl-Arne. Life at extreme latitudes. Lecture Series; BS 3431 Chronobiology 2007-10-31 - 2007.
  • Stokkan, Karl-Arne. Biological clocks in the Arctic. Departmental Seminar 2007-04-17 - 2007.
  • Stokkan, Karl-Arne. Living next to the Pole. Arctic adaptations in reindeer and ptarmigan. Biology Department Seminar Series 2007-12-04 - 2007.
  • Stokkan, Karl-Arne; Folkow, Lars; Jeffery, Glen; Stockman, Andrew. Reindeer eyes differ in summer and winter. Polar Research in Tromsø 2007.s 9 - 10.
  • Owen, James; Stokkan, Karl-Arne. Reindeer Change Their Eyes for Summer and Winter, Study Finds. 2007.
  • Stokkan, Karl-Arne. Daglengden er klokke og kalender. Hva skjer når det er mørketid og midnattssol?. Lys og mørke i naturens verden 2006-09-27 - 2006-09-27 2006.
  • Van Oort, B. E. H.; Tyler, N. J. C.; Gerkema, M.P.; Folkow, Lars; Stokkan, karl-arne. Photic modulation of the temporal pattern and rate of activity in reindeer.. Sixth International Deer Biology Congress 2006-08-10 - 2006-08-12 2006.
  • Stokkan, Karl-Arne. Biological clocks in the Arctic. IMB Seminar 2006-03-03 - 2006.
  • Stokkan, karl-arne; Waterson, Natasha. Reindeer on flying form despite Arctic dark. 2005.
  • Stokkan, Karl-Arne; Carey, Bjorn. How Reindeer Deal with Endless Winter Nights. 2005.
  • Stokkan, karl-arne; Mrasek, Volker. Schlaflos auf Schlittenfahrt. 2005.
  • Stokkan, karl-arne; Herbst, Klaus. Rudis nördlichste Verwandte ticken anders Die innere Uhr der Rentiere in der Polarregion.. 2005.
  • Stokkan, karl-arne; Vincde, Gaia. How Santa's reindeers work through the night. 2005.
  • Stokkan, karl-arne; Vogel, Gretchen. Reindeer Rhythms Run Free. 2005.
  • Stokkan, karl-arne; Highfield, Roger. Reindeer shed light on sleep disorders. 2005.
  • Stokkan, karl-arne; Mundell, E J. Why Rudolph's No Red-Eyed Reindeer. 2005.
  • Stokkan, karl-arne; Spilde, Ingrid. Reinsdyr uten døgnrytme. 2005.
  • Stokkan, karl-arne; Færevåg, Henrik. Rudolf kan klare jobben. 2005.
  • Stokkan, Karl-Arne. Regulerende lys: Lys og biologiske rytmer. Ottar 2005 (256). ISSN 0030-6703.s 55 - 60.
  • Stokkan, karl-arne; Solhaug, Randi. Slik klarer Rudolf julerushet. 2005.
  • Stokkan, karl-arne. Highlights in comparative physiology - Scaling. 2004.
  • Stokkan, karl-arne. Highlights in comparative physiology - Chronobiology. 2004.
  • Aarseth, Jo J; Stokkan, Karl-Arne. Melatonin hos sel: et viktig hormon for fosteret?. Fauna 2001; Volum 54. ISSN 0014-8881.s 84 - 89.
  • Van Oort, B. E. H.; Stokkan, Karl-Arne; Van't Hof, T. J.; Tyler, Nicholas. Photoperiodic history and melatonin secretion in reindeer.. 7th SRBR 2000-01-01 - 1999.
  • Van Oort, B. E. H.; Stokkan, Karl-Arne; Tyler, Nicholas. Long-term patterns of activity in relation to photoperiod in free-ranging reindeer and sheep.. 10th Arctic Ungulate Conference 1999-08-09 - 1999-08-12 1999.
  • Van Oort, B. E. H.; Stokkan, Karl-Arne; Reierth, E.; Tyler, Nicholas. Biological rhythms in Arctic vertebrates.. 10th Arctic Ungulate Conference 1999-08-09 - 1999-08-12 1999.
  • Van Oort, B. E. H.; Vik-Strønen, A.; Barnes, B. M.; Tobler, I.; Stokkan, Karl-Arne; Tyler, Nicholas. Activity loggers for reindeer.. 4th International Deer Biology Congress 1998-01-01 - 1998.
  • Stokkan, Karl-Arne. Lyset bestemmer tiden. Ottar 1986; Volum 159. ISSN 0030-6703.s 38 - 43.
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