Arbeider i CRIStin


  • Tyler, N. J. C.; Stokkan, Karl-Arne; Hogg, Christopher; Nellemann, C; Vistnes, Arnt Inge. Cryptic impact: Visual detection of corona light and avoidance of power lines by reindeer. Wildlife Society bulletin 2016; Volum 40 (1). ISSN 0091-7648.s 50 - 58.s doi: 10.1002/wsb.620.

  • Tyler, Nicholas J. C.; Jacobsen, Karl-Otto; Blix, Arnoldus S. Behavioural Responses of Moulting Barnacle Geese to Experimental Helicopter Noise and a Predator. (fulltekst) Canadian Wildlife Biology & Management 2016; Volum 5 (1). ISSN 1929-3100.

  • Tyler, Nicholas J.C.; Gregorini, Pablo; Forchhammer, Mads C.; Stokkan, Karl-Arne; van Oort, Bob; Hazlerigg, David. Behavioral timing without clockwork: Photoperiod-dependent trade-off between predation hazard and energy balance in an Arctic ungulate. Journal of Biological Rhythms 2016; Volum 31 (5). ISSN 0748-7304.s 522 - 533.s doi: 10.1177/0748730416662778.

  • Blix, Arnoldus S; Kvadsheim, Petter Helgevold; Kholodova, Marina V.; Sokolov, Vladimir E.; Messelt, Edvard Berger; Tyler, N. J. C.. Superb Winter fur insulation in the small Siberian musk deer (Moschus moschiferus). Rangifer 2015; Volum 35 (1). ISSN 0333-256X.s 53 - 60.s doi: 10.7557/2.35.1.3575.

  • Hendrichsen, Ditte Katrine; Tyler, N. J. C.. How the timing of weather events influences early development in a large mammal. Ecology 2014; Volum 95 (7). ISSN 0012-9658.s 1737 - 1745.s doi: 10.1890/13-1032.1.

  • Tyler, N. J. C.; Stokkan, Karl-Arne; Hogg, Chris; Nellemann, Christian; Vistnes, Arnt Inge; Jeffery, Glen. Ultraviolet vision and avoidance of power lines in birds and mammals. Conservation Biology 2014; Volum 28 (3). ISSN 0888-8892.s 630 - 631.s doi: 10.1111/cobi.12262.

  • Tyler, N. J. C.; Jeffery, Glen; Hogg, C R; Stokkan, Karl-Arne. Ultraviolet Vision May Enhance the Ability of Reindeer to Discriminate Plants in Snow. Arctic 2014; Volum 67 (2). ISSN 0004-0843.s 159 - 166.s doi: 10.14430/arctic4381.

  • 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.

  • Tyler, N. J. C.. Climate, snow, ice, crashes, and declines in populations of reindeer and caribou (Rangifer tarandus L.). Ecological Monographs 2010; Volum 80 (2). ISSN 0012-9615.s 197 - 219.

  • Post, E.; Forchhammer, M.C.; Bret-Harte, M.S.; Callaghan, T.V.; Christensen, T.R.; Elberling, Bo; Fox, A.D.; Gilg, O.; Hik, D.S.; Høye, T.T.; Ims, R.A.; Jeppesen, E.; Jeppesen, Erik; Klein, D.R.; Madsen, J.; McGuire, A.D.; Rysgaard, S.; Schindler, D.E.; Stirling, I.; Tamstorf, Mikkel P.; Tyler, N.J.C.; Wal, Rene van der; van der Wal, Rene; Welker, J.; Wookey, P.A.; Schmidt, N.M.; Aastrup, P.. Ecological Dynamics Across the Arctic Associated with Recent Climate Change. Science 2009; Volum 325 (5946). ISSN 0036-8075.s 1355 - 1358.s doi: 10.1126/science.1173113.

  • Tyler, N. J. C.; Forchhammer, Mads C.; Øritsland, N. A.. Nonlinear effects of climate and density in the dynamics of a fluctuating population of reindeer. Ecology 2008; Volum 89 (6). ISSN 0012-9658.s 1675 - 1686.

  • Tyler, N. J. C.; Bull, Kirsti Strøm; Turi, J.M.; Sundset, Monica Alterskjær; Bull, KS; Strøm Bull, K.; Sara, M.N.; Reinert, E.; Oskal, N.; Nellemann, C.; McCarthy, J.J.; Mathiesen, Svein D.; Martello, M.L.; Magga, Ole Henrik; Hovelsrud, Grete K.; Hanssen-Bauer, I.; Eira, Nils Isak; Eira, Inger Marie Gaup; Corell, R.W.. Saami reindeer pastoralism under climate change: Applying a generalized framework for vulnerability studies to a sub-arctic social-ecological system. (fulltekst) Global Environmental Change 2007; Volum 17. ISSN 0959-3780.s 191 - 206.s doi: 10.1016/j.gloenvcha.2006.06.001.

  • 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: 10.1007/s00114-006-0174-2.

  • 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.

  • Flood, PF; Tyler, Nicholas; Read, EK; Rodway, MJ; Chedrese, PJ. Ovarian and placental production of progesterone and oestradiol during pregnancy in reindeer. Animal Reproduction Science 2005; Volum 85. ISSN 0378-4320.

  • McCARTHY, JJ; LONG-MARTELLO, M; CORRELL, RW; ECKLEY, N; FOX, S; HOVELSRUD, GK; MATHIESEN, SD; POLSKY, C; SELIN, H; Tyler, N. J. C.; STRØM-BULL, K; SIEGEL-CAUSEY, D; EIRA, IMG; EIRA, NI; ERIKSEN, S; HANSEN-BAUER, I; KALSTAD, JK; NELLEMANN, C; OSKAL, N; REINERT, ES; STOREHEIER, PV; TURI, JM. Chapter 17 Climate change in the context of multiple stressors and resilience. Arctic Climate Impact Assessment 2005.

  • van Oort, Bob Eric H.; Tyler, N. J. C.; Gerkema, M.P.; Folkow, Lars; Blix, Arnoldus S; Stokkan, Karl-Arne. Circadian organization in reindeer. (omtale) 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.

  • Flood, PF; Tyler, N. J. C.; HOARE, EK; RODWAY, MJ; CHEDRESE, PJ. Ovarian and placental production of progesterone and oestradiol during pregnancy in reindeer. Animal Reproduction Science 2004; Volum 85. ISSN 0378-4320.s 147 - 162.

  • TURNER, BL; MATSON, PA; McCARTHY, JJ; CORELL, RW; CHRISTENSEN, L; ECKLEY, N; HOVELSRUD, GK; KASPERSON, JX; KASPERSON, RE; LUERS, A; MARTELLO, ML; MATHIESEN, SD; NAYLOR, S; POLSKY, C; PULSIPHER, A; SCHILLER, A; Tyler, N. J. C.. Illustrating the coupled human-environment system for vulnerability analysis: three case studies. Proceedings of the National Academy of Sciences of the United States of America 2003; Volum 100. ISSN 0027-8424.s 8080 - 8085.

  • Storeheier, Pål Vegar; Mathiesen, Svein Dish; Tyler, Nicholas; Olsen, Monica Alteskjær. Nutritive value of terricolous lichens for reindeer in winter. The Lichenologist 2002; Volum 34. ISSN 0024-2829.s 247 - 257.s doi: 10.1006/lich.2002.0394.

  • STOREHEIER, PV; MATHIESEN, SD; Tyler, N. J. C.; SCHJELDERUP, I; OLSEN, MA. Utilization of nitrogen- and mineral-rich vascular forage plants by reindeer in winter. Journal of Agricultural Science 2002; Volum 139. ISSN 0021-8596.s 1 - 10.

  • Mathiesen, Svein Dish; Sørmo, Wenche; Haga, Øyvind E.; Nordberg, Harry J; Utsi, Tove Aagnes; Tyler, N. J. C.. The oral anatomy of Arctic ruminants: coping with seasonal changes. (data) (sammendrag) Journal of Zoology 2000; Volum 251 (01). ISSN 0952-8369.

  • Gotaas, G.; Milne, E.; Haggarty, P.; Tyler, Nicholas. Loss of deuterium in faecal solids and by sequestration in reindeer: effect on doubly labelled water studies. Rangifer 2000; Volum 20. ISSN 0333-256X.s 31 - 41.

  • Gotaas, G.; Milne, E.; Haggarty, P.; Tyler, Nicholas. Energy expenditure in free-living reindeer estimated by the doubly labelled water method. Rangifer 2000; Volum 20. ISSN 0333-256X.s 211 - 220.

  • Mathiesen, S. D.; Haga, Ø. E.; Kaino, T.; Tyler, Nicholas. Diet composition, rumen papillation and maintenance of carcass mass in female Norwegian reindeer (Rangifer tarandus tarandus) in winter. Journal of Zoology 2000; Volum 251. ISSN 0952-8369.s 129 - 138.

  • Mathiesen, S. D.; Sørmo, W.; Haga, Ø. E.; Norrberg, H. J.; Utsi, T. H. A.; Tyler, Nicholas. The oral anatomy of Arctic ruminants: coping with seasonal changes. Journal of Zoology 2000; Volum 251. ISSN 0952-8369.s 119 - 128.

  • Mathiesen, S. D.; Sørmo, W.; Haga, Ø. E.; Vader, Marit Arianne; Rædergård, V. B.; Tyler, Nicholas; Hofmann, R. R.. Functional anatomy of the omasum in high Arctic Svalbard reindeer (Rangifer tarandus platyrhynchus) and Norwegian mainland reindeer (Rangifer t. tarandus). Acta Veterinaria Scandinavica 2000; Volum 41. ISSN 0044-605X.s 25 - 40.

  • Mesteig, K.; Tyler, Nicholas; Blix, Arnoldus S. Seasonal changes in heart rate and food intake in reindeer (Rangifer tarandus tarandus). Acta Physiologica Scandinavica 2000; Volum 170. ISSN 0001-6772.s 145 - 151.

  • 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.

  • Tyler, Nicholas; Fauchald, Per; Johansen, O.; Christiansen, H. R.. Seasonal inappetance and weight loss in female reindeer in winter. Ecological bulletins 1999; Volum 47. ISSN 0346-6868.s 105 - 116.

  • Storheier, P. V.; Mathiesen, S. D.; Tyler, Nicholas; Olsen, M. A.. Digestiblity of fresh and dried lichens in reindeer. South African Journal or Animal Science 1999; Volum 29. ISSN 0375-1589.s 181 - 182.

  • Mathiesen, S. D.; Rædergård, V. B.; Vader, Marit Arianne; Haga, Ø. E.; Norberg, H. J.; Sørmo, W.; Tyler, Nicholas. Salivary glands in Svalbard reindeer (Rangifer tarandus platyrhynchus) and in Norwegian (Rangifer t. tarandus). Rangifer 1999; Volum 19. ISSN 0333-256X.s 25 - 32.

  • Lincoln, G. A.; Tyler, Nicholas. Role of oestradiol in the regulation of the seasonal antler cycle in female reindeer, Rangifer tarandus. Journal of Reproduction and Fertility 1999; Volum 115. ISSN 0022-4251.s 167 - 174.

  • Ranheim, B.; Horsberg, T. E.; Nymoen, U.; Søli, N. E.; Tyler, Nicholas; Arnemo, J. M.. Reveral of Medetomedine- Induced Sedation in Reindeer (Rangifer tarandus tarandus) with Atipamezole Increases the Medetomedine Concentration in Plasma. Journal of Veterinary Pharmacology and Therapeutics 1997; Volum 20. ISSN 0140-7783.s 350 - 354.

  • Gotaas, G.; Milne, E.; Haggarty, P.; Tyler, Nicholas. Use of Faeces to Estimate Isotopic Abundance in Doubly Labelled Water Studies in Reindeer in Summer and Winter. American Journal of Physiology. Regulatory Integrative and Comparative Physiology 1997; Volum 273. ISSN 0363-6119.s 1451 - 1456.

  • GOTAAS, G; Tyler, N. J. C.. Faeces is a reliable source of body water for measuring tritium in reindeer in summer and in winter. Rangifer 1995; Volum 15 (2). ISSN 0333-256X.s 63-70 - .

  • LINCOLN, GA; Tyler, N. J. C.. Role of gonadal hormones in the regulation of the seasonal antler cycle in female reindeer, Rangifer tarandus. Journal of Reproduction and Fertility 1994; Volum 101. ISSN 0022-4251.s 129 - 138.

  • 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.

  • Pond, C M; Mattacks, C A; Colby, R H; Tyler, N. J. C.. The anatomy, chemical composition and maximum glycolytic capacity of adipose tissue in wild Svalbard reindeer (Rangifer tarandus platyrhynchus). Journal of Zoology 1993; Volum 229. ISSN 0952-8369.s 17 - 40.

  • Tyler, N. J. C.; Stuen, Snorre; Krogsrud, J; Hyllseth, Berit. Serosurvey of three virus infections in reindeer in northern Norway and Svalbard. Rangifer 1993; Volum 13 (4). ISSN 0333-256X.s 215 - 219.

  • Cunningham, A A; Tyler, N. J. C.; Leverne, A. Cholangioma in a Svalbard reindeer (Rangifer tarandus platyrhynchus). The Veterinary Record 1993; Volum 132. ISSN 0042-4900.s 112 - 112.

  • Tyler, N. J. C.. Body composition of female Svalbard reindeer: the effects of age and reproductive status. 1992 ISBN 0387975764.s 233 - 237.

  • Lincoln, G A; Tyler, N. J. C.. Antler growth in male and female reindeer calves (Rangifer tarandus) occurs in the absence of the gonads. 1992 ISBN 0387975764.s 493 - 498.

  • Tyler, N. J. C.. Short term behavioural responses of Svalbard reindeer to direct provocation by a snowmobile. Biological Conservation 1991; Volum 56. ISSN 0006-3207.s 179 - 194.

  • Tyler, N. J. C.; Blix, A S. Survival strategies in Arctic ungulates. Rangifer Special Issue 1990; Volum 3. ISSN 0801-6399.s 211 - 230.

  • Tyler, N. J. C.; Hotvedt, R.; Blix, A S; Sørensen, D. Immobilization of Norwegian reindeer (Rangifer tarandus tarandus) and Svalbard reindeer (Rangifer tarandus platyrhynchus) with medetomidine and metetomidine-ketamine and reversal of immobilization with atipamezole. Acta Veterinaria Scandinavica 1990; Volum 31 (4). ISSN 1751-0147.s 479 - 488.

  • Callaghan, T V; Carlsson, B A; Tyler, N. J. C.. Historical records of climate-related growth in Cassiope tetragona from the high Arctic. Journal of Ecology 1989; Volum 77. ISSN 0022-0477.s 823 - 837.

  • Tyler, N. J. C.; Øritsland, N A. Why don't Svalbard reindeer migrate?. Holarctic Ecology 1989; Volum 12. ISSN 0105-9327.s 369 - 376.

  • Tyler, N. J. C.. Estimating the daily dry matter intake of Svalbard reindeer in late winter. Rangifer 1987; Volum 7 (1). ISSN 0333-256X.s 29 - 32.

  • Tyler, N. J. C.. Fertility in female reindeer: the effects of nutrition and growth. Rangifer 1987; Volum 7 (2). ISSN 0333-256X.s 37 - 44.

  • Tyler, N. J. C.. Sexual dimorphism in the pelvic bones of Svalbard reindeer. Journal of Zoology 1987; Volum 231. ISSN 0952-8369.s 147 - 152.

  • Tyler, N. J. C.. The relationship between the fat content of Svalbard reindeer in autumn and their death from starvation in winter. Rangifer Special Issue 1986; Volum 1. ISSN 0801-6399.s 311 - 314.

  • Edwards, G E; Robinson, S P; Tyler, N. J. C.; Walker, D A. A requirement for chelation in obtaining functional chloroplasts of sunflower and wheat. Archives of Biochemistry and Biophysics 1978; Volum 190 (2). ISSN 0003-9861.s 421 - 433.

  • Edwards, G E; Robinson, S P; Tyler, N. J. C.; Walker, D A. Photosynthesis by isolated protoplasts, protoplast extracts, and chloroplasts of wheat – influence of ortho-phosphate, pyrophosphate and adenylates. Plant Physiology 1978; Volum 62 (2). ISSN 0032-0889.s 313 - 319.

  • Tyler, N. J. C.. Body composition of female Svalbard reindeer: the effects of age and reproductive status. 1992 ISBN 0387975764.s 493 - 498.

  • Tyler, N. J. C.. Body composition and energy balance of pregnant and non-pregnant Svalbard reindeer during winter. 1987 ISBN 0198540051.

  • Tyler, N. J. C.. Å frykte massedød. Svalbardposten 2015.

  • Tyler, N. J. C.; Vistnes, Arnt-Inge; Stokkan, Karl Arne; Hogg, Chris R; Nellemann, Christian; Jeffery, Glen. Power lines, reindeer and UV: A reply to Reimers et al.. Biological Conservation 2015; Volum 184. ISSN 0006-3207.s 472 - 472.

  • Hendrichsen, Ditte Katrine; Tyler, N. J. C.. Dynamics and life histories of northern ungulates in changing environments. AGU Fall meeting 2011 2011-12-05 - 2011-12-09 2011.

  • 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.

  • McCarthy, James J.; Martello, Marybeth L.; Corell, Robert; Eckley, Noelle; Fox, Shari; Hovelsrud-Broda, Grete K.; Mathiesen, Svein Dish; Polsky, Colin; Selin, Henrik; Tyler, N. J. C.; Strøm Bull, Kirsti; Siegel-Causey, Douglas; Eira, Inger Maria Gaup; Eira, Nils Isak; Eriksen, Siri E H; Hansen-Bauer, Inger; Kalstad, Johan Klemet Hætta; Nellemann, Christian; Oskal, Nils; Reinert, Erik S.; Storeheier, Paal Vegar; Turi, Johan Mathis. Climate Change in the Context of Multiple Stressors and Resilience. Cambridge University Press 2005.

  • Tyler, N. J. C.. Basis for determining an upper limit on reindeer numbers. Reindeer Husbandry Seminar 2004-11-11 - 2004-11-12 2004.

  • Bull, Kirsti Strøm; Corell, Robert; Eira, Inger Marie Gaup; Eira, Nils Isak; hansen Bauer, Inger; Hovelsrud, Grete K.; Mathiesen, Svein Disch; McCARTHY, JJ; LONG-MARTELLO, M; Nellemann, Cristian; Oskal, Nils; POLSKY, C; Reinert, Erik; Storheier, P. V.; Tyler, Nicholas J. C.; Turi, Johan Mathis. Assessing vulnerabilities: a new strategy for the Arctic. ACIA International Scientific Symposium on Climate Change 2004-11-01 - 2004-11-07 2004.

  • Tyler, N. J. C.. Reindeer Herding. 2004.

  • Tyler, N. J. C.. Reindeer Herding. 2004.

  • Tyler, N. J. C.. Noe begrenset hva vi kan finne ut. 2004.

  • Tyler, N. J. C.. For mange dyr. 2004.

  • BULL, KS; CORRELL, RW; EIRA, IG; EIRA, NI; ERIKSEN, S; HANSEN-BAUER, I; HOVELSRUD, GK; MATHIESEN, SD; McCARTHY, JJ; LONG-MARTELLO, M; NELLEMANN, C; OSKAL, N; POLSKY, C; REINERT, E; STOREHEIER, PV; Tyler, N. J. C.; TURI, JM. Assessing vulnerabilities: a new strategy for the Arctic. ACIA International Scientific Symposium on Climate Change 2004-11-01 - 2004-11-07 2004.

  • Rødven, Rolf; Tveraa, Torkild; Forchhammer, Mads C.; Tyler, N. J. C.. Selfish mothers: Density related changes of maternal investment in reindeer. 11th Arctic Ungulate Congress 2003-08-24 - 2003-08-28 2003.

  • Rødven, Rolf; Forchhammer, Mads C.; Tveraa, Torkild; Tyler, N. J. C.. Life history consequences of variation in early development in female reindeer calves. 5th International Deer Biology Congress 2002-08-25 - 2002-08-30 2002.

  • Tyler, Nicholas. ukjent. Den 9. Nord-amerikanske caribou workshopen. NRL's informasjon 2001-08-08 - 2001-08-10 2001.

  • Tyler, Nicholas; Rædergård, V. B.. Lokalbedøvelse ved kastrering av rein: en undersøkelse av anvendelse og gjennomførbarhet i felt. 2001.

  • Tyler, Nicholas. The Falkland Islands Programme. 2001.

  • Tyler, Nicholas. Reintap og forstyrrelse. 2001.

  • Tyler, Nicholas. Young reindeer herders on Svalbard. 2001.

  • Tyler, Nicholas. Video: "Vidda". 2001.

  • Tyler, Nicholas; Rødven, Rolf. Use and abuse of live body mass data. 9th North American Caribou Workshop 2001-03-23 - 2001-03-27 2001.

  • Tyler, Nicholas. Use of dataloggers in reindeer research. Special course for teachers 2001-10-01 - 2001.

  • Tyler, Nicholas. Overgrazing? No, thanks!. National Public Research Presentation (Forskningsdagene 2001) 2001-09-01 - 2001.

  • Tyler, Nicholas. Reindeer management in an unpredictable environment. Agriculture students (Norwegian Agricultural University) 2001-08-01 - 2001.

  • Tyler, Nicholas. ukjent. Cuobbojeaggi Projec 2001-03-01 - 2001.

  • Rødven, Rolf; Forchhammer, M. C.; Tyler, Nicholas. Environmental variability and live body mass of reindeer calves at weaning. 9th North American Caribou Workshop. 2001-04-23 - 2001-04-27 2001.

  • Rødven, Rolf; Tyler, Nicholas. Short-term loss in live body mass in reindeer Rangifer tarandus tarandus. 11th Nordic Conference on Reindeer Research 2001-01-01 - 2001.

  • Ropstad, E.; Albon, S. D.; Johansen, O.; Dahl, E.; Tyler, Nicholas. Reproductive success of reindeer associated with climate variability. 11th Nordic Conference on Reindeer Research 2001-01-01 - 2001.

  • Pentha, S. M.; Tyler, Nicholas; Wookey, P. A.; Mathiesen, S. D.. Experimental warming of reindeer forage plants in situ increases their growth. 11th Nordic Conference on Reindeer Research 2001-01-01 - 2001.

  • Tyler, N. J. C.; Rødven, Rolf. Fertility is not a function of mean live body mass in adult female reindeer. 11th Nordic Conference on Reindeer and Reindeer Husbandry Research 2001-06-18 - 2001-06-20 2001.

  • Tyler, Nicholas. Who loses their calf? Pregnancy, calf losses and the age and live body mass of females. Open meeting on 'The Predator Problem' 2000-02-01 - 2000.

  • Tyler, Nicholas. Reindeer studies in Svalbard: demography of reindeer in Adventdalen. 2000.

  • Tyler, Nicholas. Worlds Apart: Arctic and Antarctic. 2000.

  • Tyler, Nicholas. Rapport fra Sameland. 2000.

  • Tyler, Nicholas. Recruitment stipend for young Saami. 2000.

  • Tyler, Nicholas. Rapport fra Sameland. 2000.

  • Tyler, Nicholas. Sahkavaibmosis. 2000.

  • Tyler, Nicholas. 22 år med reinsdyrtellinger. 2000.

  • Tyler, Nicholas; Rædergård, V. B.; Vader, Marit Arianne. Fetal growth and timing of conception in Svalbard reindeer. 14th International Congress on Animal Reproduction 2000-07-01 - 2000.

  • Tyler, Nicholas; Rædergård, V. B.; Vader, Marit Arianne. Early reproductive failure in female Svalbard reindeer in relation to age, fat and body mass. 14th International Congress on Animal Reproduction 1999-07-01 - 2000.

  • Tyler, Nicholas. Persistent Instability. Saami Reindeer Herders' Association Board Meeting 2000-05-01 - 2000.

  • Tyler, Nicholas. Persistent Instability. Store Norske 2000-08-01 - 2000.

  • Tyler, Nicholas. Ukjent. Nordisk Reinforskermøte (Eleventh Nordic Reindeer Research Meeting) 2001-01-01 - 2000.

  • Tyler, Nicholas. ukjent. 9th North American Caribou Workshop 2001-01-01 - 2000.

  • Tyler, Nicholas. ukjent. Reindriftskole 2001-01-01 - 2000.

  • Tyler, Nicholas; Flood, P. F.; Hoare, E. K.; Rodway, M. J.; Chedrese, P. J.. Progesterone production during pregnancy in reindeer. 10th Arctic Ungulate Conference 1999-08-09 - 1999-08-12 1999.

  • Mathiesen, Svein Dish; Sørmo, Wenche; Utsi, Tove Aagnes; Sundset, Monica Alterskjær; Vader, Marit Arianne; Rædergård, V. B.; Tyler, N. J. C.. Comparative digestion in two-species of reindeer. The10th Arctic Ungulate Conference (data) (sammendrag) 1999-08-09 - 1999-08-13 1999.

  • Tyler, Nicholas; Øritsland, N. A.. Varig ustabilitet og bestandsregulering hos svalbardrein. Meddelelser / Norsk polarinstitutt 1999; Volum 150. ISSN 0373-5605.s 125 - 138.

  • Tyler, Nicholas. Recruitment stipend for young Saami. 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.; 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; Van't Hof, T. J.; Tyler, Nicholas. Photoperiodic history and melatonin secretion in reindeer. 7th SRBR 2000-01-01 - 1999.

  • Storheier, P. V.; Mathiesen, S. D.; Tyler, Nicholas; Olsen, M. A.. Factors influencing the in vitro digestibility of lichens in reindeer. 10th Arctic Ungulate Conference 1999-08-09 - 1999-08-12 1999.

  • Mathiesen, S. D.; Sørmo, W. S.; Utsi, T. H. A.; Olsen, M. A.; Vader, Marit Arianne; Rædergård, V. B.; Tyler, Nicholas. Comparative digestion in two subspecies of reindeer. 10th Arctic Ungulate Conference 1999-08-09 - 1999-08-12 1999.

  • Tyler, Nicholas; Rædergård, V. B.; Vader, Marit Arianne. Early reproductive failure in female Svalbard reindeer in relation to age, fat and body mass. 10th Arctic Ungulate Conference 1999-08-09 - 1999-08-12 1999.

  • Tyler, Nicholas; Forchhammer, M. C.; Øritsland, N. A.. Persistent instability in Svalbard reindeer dynamics: tension between intrinsic and climatic processes. 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.

  • Tyler, Nicholas. Reindeer pastures at disequilibrium. Pro-ceedings of the 4th International Deer Biology Congress 1998-01-01 - 1998.

  • Christiansen, H. R.; Johansen, O.; Tyler, Nicholas. Female reindeer grow fatter in winter. 4th International Deer Biology Congress 1998-01-01 - 1998.

  • Tyler, Nicholas. A World Catalogue of Reindeer Husbandry. Foredrag på Congress of World Reindeer Peoples 1997-03-01 - 1997.

  • Tyler, Nicholas. Reindeer Research: The Overgrazing Problem. Foredrag møte i Association of Reindeer Herders 1997-09-01 - 1997.

  • Mesteig, K.; Tyler, Nicholas; Blix, Arnoldus S. Heart Rate and Food Intake in Norwegian Reindeer. Experimental biology meeting (FASEB) 1997-01-01 - 1997.

  • Tyler, Nicholas. Reindeer studies in Svalbard: demography of reindeer in Adventdalen. 1996.

  • Christiansen, H. R.; Tyler, Nicholas; Johansen, O.. Bruker simler i Finnmark kroppsreserver om vinteren?. Reindriftsnytt : Boazodoallu-Oddasat 1996; Volum 3. ISSN 0333-4031.s 15 - 19.