Eigil Reimers

• Reimers, Eigil; Eftestøl, Sindre & Colman, Jonathan Edward (2021). Vigilance in reindeer (Rangifer tarandus); evolutionary history, predation and human interference. Polar Biology. ISSN 0722-4060. 44, p. 997–1007. doi: 10.1007/s00300-021-02857-w. Full text in Research Archive
• Reimers, Eigil; Eftestøl, Sindre; Alemu, Diress Tsegaye & Granum, Knut (2020). Reindeer fidelity to high quality winter pastures outcompete power line barrier effects. Rangifer. ISSN 0333-256X. 40(1), p. 27–40. doi: 10.7557/2.40.1.4968. Full text in Research Archive
• White, Robert G. & Reimers, Eigil (2020). Phenotypic plasticity following weaning: winter body mass trends and food intake in relation to temperature by an arctic ungulate. Polar Biology. ISSN 0722-4060. 43(3), p. 193–205. doi: 10.1007/s00300-020-02623-4.
• Flydal, Kjetil; Tsegaye, Diress; Eftestøl, Sindre; Reimers, Eigil & Colman, Jonathan Edward (2019). Rangifer within areas of human influence: understanding effects in relation to spatiotemporal scales. Polar Biology. ISSN 0722-4060. 42(1), p. 1–16. doi: 10.1007/s00300-018-2410-6.
• Stankowich, Theodore & Reimers, Eigil (2015). Escape decisions prior to pursuit: Mammals. In Cooper Jr., W. E. & Blumstein, D. T. (Ed.), Escaping from Predators: An Integrative Review of Escape Decisions. Cambridge University Press. ISSN 1107060540. p. 63–87. doi: 10.1017/cbo9781107447189.004.
• Panzacchi, Manuela; Van Moorter, Bram F. A.; Strand, Olav; Loe, Leif Egil & Reimers, Eigil (2015). Searching for the fundamental niche using individual-based habitat selection modelling across populations. Ecography. ISSN 0906-7590. 38(7), p. 659–669. doi: 10.1111/ecog.01075. Full text in Research Archive Show summary

  Strictly speaking, fundamental niches are inestimable. Nevertheless, ecologists attempt approximating them to understand species ’ distribution and plasticity to environmental changes, with invaluable repercussions on both theoretical and applied ecology. So far, individual-based habitat selection models only characterized realized niches of populations delimited by physical (e.g. fences), historical (colonization) and biotic (competition) barriers constraining access to a subset of resources available to the species. As populations with diff erent realized niches share the same fundamental niche, we developed a novel framework to scale-up response curves from population-scale habitat selection models to approximate the species ’ optimal habitat choices, unbiased by barriers constraining accessibility. We used GPS-locations from 147 wild mountain reindeer Rangifer t. tarandus , belonging to 7 of the remaining populations scattered throughout the subspecies ’ range. We linked individual choices to accessible habitat features using conditional-logistic regression with log-link function in a use-available design. Focal variables were modeled using 2nd degree polynomials on log-scale, which correspond to a Gaussian curve used to approximate the fundamental niche optimum (curve mean) and breadth (variance). Using both real and simulated data we demonstrate that robust approximations of a fundamental niche optimum and breadth can be estimated using a relatively small number of representative populations with relatively few individuals. While each classical realized niche model had strong predictive power for the focal population but poorly predicted across populations, the approximation of the fundamental niche allowed for robust inter-population comparisons in habitat quality. Th e proposed approach brings individual-based habitat selection models forward along the continuum from investigating the realized niche of a population towards investigating a species ’ fundamental niche, and allows us to quantify empirically the relationship between realized and fundamental niches. Th is allows improving the understanding of diff erences in fi tness among populations, the prediction of species ’ distributions and plasticity to environmental changes, and suggestions for mitigation priorities.

• Bjerketvedt, Dag Kjartan; Reimers, Eigil; Parker, Howard & Borgstrøm, Reidar (2014). The Hardangervidda wild reindeer herd: a problematic management history. Rangifer. ISSN 0333-256X. 34(1), p. 57–72. doi: 10.7557/2.34.1.2951.
• Reimers, Eigil; Tsegaye, Diress; Colman, Jonathan Edward & Eftestøl, Sindre (2014). Activity patterns in reindeer with domestic vs. wild ancestry. Applied Animal Behaviour Science. ISSN 0168-1591. 150, p. 74–84. doi: 10.1016/j.applanim.2013.10.010.
• Reimers, Eigil; Nieminen, Mauri & Tsegaye, Diress (2013). Antler casting in relation to parturition in semi-domesticated female reindeer. Rangifer. ISSN 0333-256X. 33(1), p. 17–24. doi: 10.7557/2.33.1.2722.
• Reimers, Eigil & Eftestøl, Sindre (2012). Response Behaviors of Svalbard Reindeer towards Humans and Humans Disguised as Polar Bears on Edgeoya. Arctic, Antarctic and Alpine research. ISSN 1523-0430. 44(4), p. 483–489. doi: 10.1657/1938-4246-44.4.483.
• Colman, Jonathan Edward; Lilleeng, Marte Synnøve; Tsegaye, Diress; Vigeland, Magnus Dehli & Reimers, Eigil (2012). Responses of wild reindeer (Rangifer tarandus tarandus) when provoked by a snow-kiter or skier: A model approach. Applied Animal Behaviour Science. ISSN 0168-1591. 142(1-2), p. 82–89. doi: 10.1016/j.applanim.2012.08.009.
• Reimers, Eigil (2012). Svalbard reindeer population size and trends in four sub-areas of Edgeøya. Polar Research. ISSN 0800-0395. 31. doi: 10.3402/polar.v31i0.11089.
• Colman, Jonathan Edward; Alemu, Diress Tsegaye; Pedersen, Christian; Eidesen, Ruben; Arntsen, Herbjørg & Holand, Øystein [Show all 9 contributors for this article] (2012). Behavioral Interference Between Sympatric Reindeer and Domesticated Sheep in Norway. Rangeland Ecology & Management. ISSN 1550-7424. 65(3), p. 299–308. doi: 10.2111/REM-D-11-00094.1. Show summary

  Interspecific interaction among sympatric ungulates is important in management and conservation. We investigated behavioral interference between sympatric wild or semidomestic reindeer (Rangifer tarandus tarandus) and sheep (Ovis aries) in two field studies and one enclosure experiment. For free-ranging wild and semidomestic reindeer, interference between the two species increased with decreasing distances, occurring only at less than 200 m and 30 m, for wild and semidomestic reindeer, respectively, and neither species consistently dominated the other. In a controlled, duplicated experiment we tested interference and confrontations at the feeding patch level among semidomestic reindeer and sheep within 40 × 50 m enclosures. When new reindeer or sheep were introduced into enclosures already occupied by reindeer, new reindeer resulted in significantly more interference and confrontations among individuals compared to new sheep; i.e., intraspecific interference was more prevalent than interspecific interference at equal densities. For all study areas, confrontations decreased with time after “first encounter,” indicating cohabituation. A sympatric use of pastures was not visually disruptive for recorded grazing behavior for either species.

• Reimers, Eigil; Røed, Knut H. & Colman, Jonathan Edward (2012). Persistence of vigilance and flight response behaviour in wild reindeer with varying domestic ancestry. Journal of Evolutionary Biology. ISSN 1010-061X. 25(8), p. 1543–1554. doi: 10.1111/j.1420-9101.2012.02538.x.
• Holand, Øystein; Weladji, Robert B.; Mysterud, Atle; Røed, Knut H.; Reimers, Eigil & Nieminen, Mauri (2012). Induced orphaning reveals post-weaning maternal care in reindeer. European Journal of Wildlife Research. ISSN 1612-4642. 58(3), p. 589–596. doi: 10.1007/s10344-012-0608-4.
• Reimers, Eigil; Lund, Steinar & Ergon, Torbjørn (2011). Vigilance and fright behaviour in the insular Svalbard reindeer (Rangifer tarandus platyrhynchus). Canadian Journal of Zoology. ISSN 0008-4301. 89(8), p. 753–764. doi: 10.1139/Z11-040.
• Reimers, Eigil; Røed, Knut H.; Flaget, Øystein & Lurås, Eivind (2010). Habituation responses in wild reindeer exposed to recreational activities. Rangifer. ISSN 0333-256X. 30(1), p. 45–59.
• Reimers, Eigil; Loe, Leif Egil; Eftestøl, Sindre; Colman, Jonathan Edward & Dahle, Bjørn (2009). Effects of Hunting on Response Behaviors of Wild Reindeer. Journal of Wildlife Management. ISSN 0022-541X. 73(6), p. 844–851. doi: 10.2193/2008-133. Show summary

  Because wild reindeer (Rangifer tarandus) are hunted in southern Norway, reindeer may perceive all recreationists as threats. Potential adverse effects of hunting on reindeer behavior may be exacerbated by other forms of recreation because the number of skiers and hikers in areas inhabited by reindeer has also increased. The Norefjell–Reinsjøfjell wild reindeer area is used extensively for recreation and tourism. Reindeer hunting was introduced in the area in 1992, and harvest rate has been stable at about 38% of winter herd size. We recorded behavioral responses of reindeer to a person approaching directly on foot or skis during 1992 and again in 2002–2006. Compared to 1992, flight-initiation distance increased and fewer groups assessed the observer before taking flight during 2002–2006. In winter, when reindeer are usually comparably more vigilant than in other seasons, flight-initiation distance increased from only 60 m to 115 m and escape distance decreased from 400 m to 210 m. Neither alert distance, calf carcass weights (23.6 6 0.7 [SE] kg to 22.4 6 0.2 kg), nor reindeer herd size (661 6 73 to 579 6 15) changed during the 15 years of our study. Reindeer appeared to habituate to the observer because they initiated flight at shorter distances as the number of approaches on the same day increased. In Norefjell–Reinsjøfjell, encounters with a person on foot or skis did not result in behavioral responses likely to entail substantial energy costs for reindeer; therefore, hunting at current levels appears compatible with other recreational activities.

• Flydal, Kjetil; Korslund, Lars; Reimers, Eigil; Johansen, Frode Berntin & Colman, Jonathan Edward (2009). Effects of power lines on area use and behaviour of semi-domestic reindeer in enclosures. International Journal of Ecology. ISSN 1687-9708. 2009. doi: 10.1155/2009/340953. Show summary

  We conducted large-scale, replicated experiments to test the effects of two parallel power lines on area use, behaviour, and activity of semidomestic reindeer in enclosures. Yearling female reindeer were released into four 50×400?m enclosures; two treatment enclosures with power lines and two control enclosures. Reindeer from two herds, one from Kautokeino (domestic tame) and one from Vågå, (domestic wild) were tested separately and compared. Individual location within the enclosures was not affected by the power lines. Effects on restless behaviour were ambiguous, with slightly more restless behaviour in the treatment enclosures for the domestic tame reindeer, while the domestic wild reindeer maintained a stable level in the treatment enclosures, increasing with time in the control enclosures. Activity changes were slightly more common among animals within treatment enclosures for both herds, with no indication of habituation during the experiment. The domestic wild reindeer had more than three times the amount of restless behaviour than the domestic tame reindeer. Our study indicates that for reindeer in enclosures, the disturbance from a power line construction is negligible. This suggests that power lines are a minor disturbing factor compared to human handling when using fenced in areas like grazing gardens in reindeer husbandry.

• Dahle, Bjørn; Reimers, Eigil & Colman, Jonathan Edward (2008). Reindeer (Rangifer tarandus) avoidance of a highway as revealed by lichen measurements. European Journal of Wildlife Research. ISSN 1612-4642. 54, p. 27–35. doi: 10.1007/s10344-007-0103-5. Show summary

  Reindeer and caribou Rangifer tarandus are reported to avoid human infrastructure such as roads, high-voltage power lines, pipelines, and tourist resorts. Lichens are important forage for reindeer during winter, and their relatively slow growth rates make them vulnerable to overgrazing. Height and volume of lichens are often used as an indicator of grazing pressure by reindeer and, thus, as an indirect measure of Rangifer avoidance of human infrastructure. We sampled lichen height in Cetraria nivalis-dominated communities along 4 and 3 parallel transects located on two parallel mountain ridges in Hardangervidda, south central Norway. The lichen measurements were analyzed in relation to altitude and the distance from four tourist cabins in the area and a highway (Rv7) running perpendicular to the 7 transects. The mountain ridge with 4 transects is part of a much used migratory corridor for wild reindeer R. tarandus tarandus. Along the nonmigratory ridge, lichen height decreased 35% over an 8-km distance from Rv7 and a tourist cabin, indicating reindeer aversion toward Rv7 and/or a tourist cabin. No similar relationship was found for the migration ridge in relation to distance from Rv7 or the tourist cabins. Our results suggest that avoidance of human infrastructure by wild reindeer might be limited where reindeer use of winter pastures is influenced by herd traditions and/or motivation to follow established migration corridors. This has important implications for addressing the use of similar pasture measurements when testing for Rangifer aversion toward human disturbances.

• Reimers, Eigil (2007). Wild reindeer in Norway - population ecology, management and harvest. Rangifer. ISSN 0333-256X. 12, p. 35–45.
• Reimers, Eigil (2007). Villrein i Norge; Populasjonsøkologi, forvaltning og jakt. Rangifer Report. ISSN 0808-2359. p. 35–45.
• Reimers, Eigil; Dahle, Bjørn; Eftestøl, Sindre; Colman, Jonathan Edward & Gaare, Eldar (2007). Effect of a power line on migration and range use of wild reindeer. Biological Conservation. ISSN 0006-3207. 134, p. 484–494. doi: 10.1016/j.biocon.2006.08.034. Show summary

  Linear infrastructures such as roads, pipelines and power lines can hinder Rangifer migration and reduce the total amount of area available for foraging. We studied the barrier and aversion effect of a 66 kV power line transecting the range of wild reindeer in North Ottadalen, south central Norway using aerial surveys of reindeer distribution (direct measurement of reindeer use) and lichen measurements (indirect measurement of reindeer use) at varying distances from both sides of the power line. We present a clear definition of the expected barrier and aversion effects, and present specific hypotheses and predictions based on these two terms that are often used unclearly in the literature. The aerial surveys and ground observations showed that reindeer crossed underneath and grazed under and on both sides of the power line during 14 out of the 22 years (63.6%) surveys were conducted over the last 31 years. This behaviour was confirmed by the lichen measurements, indicating a higher use of lichen pastures along ridges close to and under the power line compared to those at increasing distances and up to 3 km from both sides of the power line. This winter grazing pattern probably reflects the topographical channeling of reindeer to the ridges along an 8 km wide topographical corridor encompassing the power line and cannot be attributed to the power line itself. We found that direct measurement data (visual observations such as ours or GPS/telemetry tracking) provide less ambiguous information for testing barrier and aversion effects than indirect measurement data (pasture/ lichen measurements) that are likely influenced by numerous uncontrollable environmental variables independent of reindeer grazing. Our results contrast with recent studies indicating strong barrier and aversion effects of similar power lines for Rangifer migration and grazing behaviour in alpine terrain. (c) 2006 Elsevier Ltd. All rights reserved.

• Reimers, Eigil (2006). Calf recruitment variations; Biology or methodology. Rangifer. ISSN 0333-256X. 26, p. 1–8.
• Reimers, Eigil & Colman, Jonathan Edward (2006). Reindeer and caribou (Rangifer tarandus)response towards human activities. Rangifer. ISSN 0333-256X. 26(2), p. 55–71. doi: 10.7557/2.26.2.188.
• Reimers, Eigil; Miller, Frank L.; Eftestøl, Sindre; Colman, Jonathan Edward & Dahle, Bjørn (2006). Flight by feral reindeer Rangifer tarandus tarandus in response to a directly approaching human on foot or on skis. Wildlife Biology. ISSN 0909-6396. 12, p. 403–413. doi: 10.2981/0909-6396(2006)12%5B403:FBFRRT%5D2.0.CO;2.
• Reimers, Eigil (2006). Wild reindeer calf recruitment variations; biology or methodology? Rangifer. ISSN 0333-256X. 26(1), p. 7–14.
• Reimers, Eigil; Holmengen, Nina & Mysterud, Atle (2005). Life-history variation of wild reindeer (Rangifer tarandus) in the highly productive North Ottadalen region, Norway. Journal of Zoology. ISSN 0952-8369. 265(1), p. 53–62. Show summary

  Variation in life history is a central key to understanding population dynamics, and density dependence and climate are important factors in shaping life-history variation in ungulates. Early growth is often sensitive to adverse conditions and this may in turn affect juvenile survival and age at first reproduction. We report variation in body weight of 5079 reindeer Rangifer tarandus from North Ottadalen. a very productive reindeer area in Norway sampled over 14 years in the period 1967-1989. The North Ottadalen reindeer herd was established in 1964 from a winter herd of some 500 semi-domestic reindeer, and allowed to grow to a peak of over 3300 reindeer in 1974, after which increased harvest decreased the population size. The proportion of lactating yearling females varied between 0% and 50%. Lactating females had lower autumn body weights than non-lactating females. A decline it, body weight with age, i.e. senescence, was evident in both males and females front around 7 to 9 years of age. Body weights of all age and sex groups as well as the proportion of yearling females lactating decreased over time, and more so in younger than older males, although the population size declined markedly after the population peat. in 1974. We found no effect of the North Atlantic Oscillation or local weather on body weight. The possible causes of the marked decline in performance with time in the North Ottadalen reindeer herd are discussed and it is suggested that this may be related to the transition from being managed as semi-domestic to wild (i.e. hunted).

• Reimers, Eigil; Holmengen, Nina & Mysterud, Atle (2005). Life-history variation of wild reindeer (Rangifer tarandus) in the highly productive North Ottadalen region, Norway. Journal of Zoology. ISSN 0952-8369. 265.
• Flydal, Kjetil; Eftestøl, Sindre; Reimers, Eigil & Colman, Jonathan Edward (2004). Effects of wind turbines on area use and behaviour of semi-domestic reindeer in enclosures. Rangifer. ISSN 0333-256X. 24, p. 55–66. doi: 10.7557/2.24.2.301.
• Colman, Jonathan Edward; Eidesen, Ruben; Hjermann, Dag Øystein; Gaup, Mathis A.; Holand, Øystein & Moe, Stein R. [Show all 7 contributors for this article] (2004). Reindeer 24-hr within and between group synchronicity in summer versus environmental variables. Rangifer. ISSN 0333-256X. 24(1), p. 25–30. doi: 10.7557/2.24.1.298.
• Flydal, Kjetil; Rogstad Kilde, Ingrid; Enger, Per S. & Reimers, Eigil (2003). Reindeer (Rangifer tarandus tarandus) perception of noise from power lines. Rangifer. ISSN 0333-256X. 23(1), p. 21–24. doi: 10.7557/2.23.1.310.
• Colman, Jonathan Edward; Pedersen, Christian; Hjermann, Dag Øystein; Holand, Øystein; Moe, Stein Ragnar & Reimers, Eigil (2003). Do wild reindeer exhibit grazing compensation during insect harassment? Journal of Wildlife Management. ISSN 0022-541X. 67(1), p. 11–19. doi: 10.2307/3803056. Show summary

  We studied wild reindeer (Rangifer tarandus tarandus) to determine whether a wild ungulate can sufficiently increase its grazing time to compensate for loss of ingestion and rumination caused by insect harassment. We also tested the effect that insect harassment may have on autumn carcass weights. During summer 1997 and 1998, we recorded 24-hr activity budgets and frequency of change in activity bouts for wild reindeer. Following diurnal periods' insect harassment and decreased grazing, animals did not compensate by increasing grazing time or intensity during the night when insect harassment was low. Adult females and calves weighed significantly less in autumn 1997 following a summer of diurnal insect harassment, compared to autumn 1998 following a summer of little insect harassment. This indicates that the effect of daily insect harassment on activity budgets and grazing intensity had a negative effect on the body weights of adult females and calves. For reindeer, as for most wild ungulates, reduced body weight indicates poor condition and can jeopardize survival, reproduction, and calf recruitment.

• Reimers, Eigil; Eftestøl, Sindre & Colman, Jonathan Edward (2003). Behavior responses of wild reindeer towards direct provocation by a snowmobile or skier. Journal of Wildlife Management. ISSN 0022-541X. 67, p. 747–754. doi: 10.2307/3802681.
• Colman, Jonathan Edward; Storlien, Svein; Moe, Stein R.; Holand, Øystein & Reimers, Eigil (2003). Reindeer avoidance of pasture contaminated with sheep and reindeer feces. Rangifer. ISSN 0333-256X. 23, p. 313–320. doi: 10.7557/2.23.5.1716.
• Reimers, Eigil (2002). Calving time and foetus growth among wild reindeer in Norway. Rangifer. ISSN 0333-256X. 22, p. 61–66.
• Høymork, Amund & Reimers, Eigil (2002). Antler development in reindeer in relation to age and sex. Rangifer. ISSN 0333-256X. 22, p. 75–82.
• Reimers, Eigil; Colman, Jonathan; Holand, Øystein & Moe, Stein Ragnar (2001). Rein og sau - klauv mot klauv. In Jaren, Vemund & Løvstad, John Petter (Ed.), Utmarksbeite og store rovdyr. Norges forskningsråd. ISSN 82-12-01535-1. p. 19–26.
• Colman, Jonathan; Pedersen, Christian; Hjermann, Dag Øystein; Holand, Øystein; Moe, Stein Ragnar & Reimers, Eigil (2001). Twenty-four-hour feeding and lying patterns of wild reindeer Rangifer tarandus tarandus in summer. Canadian Journal of Zoology. ISSN 0008-4301. 79, p. 2168–2175. doi: 10.1139/z01-186.
• Colman, Jonathan Edward; Jacobsen, Bente W. & Reimers, Eigil (2001). Summer response distances of Svalbard reindeer to provocation by humans on foot. Wildlife Biology. ISSN 0909-6396. 7, p. 275–283.
• Holand, Øystein; Bergmann, Cecilie; Bjåen, Ragnhild; Colman, Jonathan Edward; Moe, Stein R. & Pedersen, Christian [Show all 8 contributors for this article] (1999). Rein og sau. In Frøstrup, Johan Christian & Bang-Andersen, Sveinung (Ed.), I villreinens rike. Setesdal Vesthei - Ryfylkeheiene - Setesdal Austhei. Friluftsforlaget. ISSN 82-91495-14-9. p. 215–225.
• Moe, Stein Ragnar; Holand, Øystein; Colman, Jonathan Edward & Reimers, Eigil (1999). Reindeer (Rangifer tarandus) response to feces and urine from sheep (Ovis aries) and reindeer. Rangifer. ISSN 0333-256X. 19(2), p. 55–60. doi: 10.7557/2.19.2.280.
• Jacobsen, Bente W.; Colman, Jonathan Edward & Reimers, Eigil (1998). The frequency of antlerless females among Svalbard reindeer. Rangifer. ISSN 0333-256X. 18(2), p. 81–84. doi: 10.7557/2.18.2.1449.

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• Gjems, Sven R.; Pedersen, Paul Harald; Ree, Viggo; Reimers, Eigil; Swang, Ole & Søilen, Per [Show all 7 contributors for this article] (2003). ABC for jegerprøven. Landbruksforlaget. ISBN 8252927394.

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• Borgstrøm, Reidar; Reimers, Eigil & Viskjer, Jarle (2020). Stor sommarvassføring i Kvenna eit viktig vandringshinder for fostringsflokkar på Hardangervidda. Villreinen. ISSN 0801-6321. 35, p. 94–96.
• Reimers, Eigil; Borgstrøm, Reidar; Hjeljord, Olav; Lundin, Knut Erik Aslaksen & Karlsen, Tom Hemming (2019). Faglig uforsvarlig tiltak mot skrantesyke. Dagens næringsliv. ISSN 0803-9372.
• Bjerketvedt, Dag Kjartan; Borgstrøm, Reidar & Reimers, Eigil (2018). Er sau viktigere enn føre var-prinsippet? . Hjorteviltet. ISSN 1502-3729. 28, p. 31–33.
• Hjeljord, Olav; Reimers, Eigil & Borgstrøm, Reidar (2018). En rype er ikke en elg. Klassekampen. ISSN 0805-3839.
• Bjerketvedt, Dag Kjartan; Borgstrøm, Reidar & Reimers, Eigil (2018). Er sau viktigere enn føre var-prinsippet? . Nationen. ISSN 0805-3782.
• Bjerketvedt, Dag Kjartan; Reimers, Eigil & Borgstrøm, Reidar (2018). Villreinforvaltningen på Hardangervidda. En historisk tilbakeblikk. Villreinen. ISSN 0801-6321. 33, p. 32–37.
• Borgstrøm, Reidar & Reimers, Eigil (2016). Det er vindretninga som påverkar jaktutøvinga på Vestvidda. Villreinen. ISSN 0801-6321. 32, p. 65–67.
• Reimers, Eigil; Flydal, Kjetil; Korslund, Lars; Eftestøl, Sindre; Colman, Jonathan Edward & Alemu, Diress Tsegaye (2015). Power lines, reindeer and UV. Biological Conservation. ISSN 0006-3207. 184, p. 471–471. doi: 10.1016/j.biocon.2014.12.026.
• Reimers, Eigil (2010). Virkningen av jakt på villreinens frykt og fluktatferd. Villreinen. ISSN 0801-6321. 25, p. 109–111.
• Strand, Olav & Reimers, Eigil (2010). 25 år med forskning over tregrensen. Villreinen. ISSN 0801-6321. 25, p. 20–27.
• Reimers, Eigil (2009). Villrein og kraftlinjer. Villreinen. ISSN 0801-6321. 24, p. 17–19.
• Borgstrøm, Reidar & Reimers, Eigil (2004). Enighet om bestandsmålene. ?. 133(3), p. 62–63.
• Jorgensen, Nicolai; Colman, Jonathan Edward; Moe, Stein R.; Gaup, Mathis A.; Jensen, Ingebjørg & Reimers, Eigil (2004). Do reindeer prefer pasture grazed by sheep?
• Colman, Jonathan Edward; Eidesen, R.; Hjerman, Dag; Gaup, M.A.; Holand, Øystein & Moe, Stein Ragnar [Show all 7 contributors for this article] (2003). Inter versus intraspecific competition – aggression amongst reindeer and sheep.
• Colman, Jonathan Edward; Eidesen, R.; Hjerman, Dag; Gaup, M.A.; Holand, Øystein & Moe, Stein Ragnar [Show all 7 contributors for this article] (2003). Reindeer 24-hr Within and Between Group Synchronicity Versus Environmental Variables.
• Borgstrøm, Reidar; Larsen, Thor S.; Larsen, Thor S. & Reimers, Eigil (2003). Direktoratets villreinforvaltning på Hardangervidda – et tap for bygdene og landet Artikkel i. Hardanger folkeblad.
• Borgstrøm, Reidar; Larsen, Thor S. & Reimers, Eigil (2003). Villreinforvaltningen et tap for bygdene og landet. Aftenposten (morgenutg. : trykt utg.). ISSN 0804-3116.
• Reimers, Eigil; Eftestøl, Sindre & Colman, Jonathan Edward (2003). Villrein, skiløpere og snøscootere. Villreinen. ISSN 0801-6321.
• Flydal, Kjetil; Eftestøl, Sindre; Reimers, Eigil & Colman, Jonathan Edward (2003). Effects of wind turbines on area use and behaviour of semi-domestic reindeer Rangifer tarandus in enclosures.
• Colman, Jonathan Edward; Eidesen, R.; Hjermann, Dag Øystein; Gaup, Mathis A.; Holand, Øystein & Moe, Stein R. [Show all 7 contributors for this article] (2003). Reindeer 24-hr within and between group synchronicity versus environmental variables.
• Colman, Jonathan Edward; Moe, Stein R.; Elgvin, Dag T.; Holand, Øystein; Jensen, A. & Gaup, Mathis A. [Show all 8 contributors for this article] (2003). Grazing facilitation or delayed competition between reindeer and sheep? A multi-disciplinary research project for optimal dual-species management.
• Colman, Jonathan Edward; Eidesen, R.; Hjermann, Dag Øystein; Gaup, Mathis A.; Holand, Øystein & Moe, Stein R. [Show all 7 contributors for this article] (2003). Inter versus intraspecific competition – aggression amongst reindeer and sheep.
• Colman, Jonathan Edward; Moe, Stein Ragnar; Elgvin, Dag T.; Holand, Øystein; Jensen, A. & Gaup, Mathis A. [Show all 8 contributors for this article] (2003). Grazing facilitation or delayed competition between reindeer and sheep? A multi-disciplinary research project for optimal dual-species management. Rangifer Report. ISSN 0808-2359. p. 22–22.
• Borgstrøm, Reidar & Reimers, Eigil (2001). Villreinforvaltning på viddene. Aftenposten (morgenutg. : trykt utg.). ISSN 0804-3116.
• Borgstrøm, Reidar & Reimers, Eigil (2001). Forvaltningen på viddene? Bergens Tidende. ISSN 0804-8983.
• Storlien, Svein; Colman, Jonathan Edward; Moe, Stein R.; Holand, Øystein & Reimers, Eigil (2001). Reindeer aversion towards pasture contaminated with feces from sheep and reindeer.
• Reimers, Eigil; Colman, Jonathan Edward; Eftestøl, Sindre; Kind, J.; Dervo, L. & Muniz, A. (2000). Frykt- og fluktavstander hos villrein og forvillet tamrein i Sør-Norge. Reindriftsnytt : Boazodoallu-Oddasat. ISSN 0333-4031. 2(3).
• Flydal, Kjetil; Reimers, Eigil; Enger, Per S.; Eftestøl, Sindre; Hermansen, A. & Johansen, F. B. [Show all 8 contributors for this article] (2000). Effekter av kraftlinjer og vindmøller på reinens atferd og arealbruk. Reindriftsnytt : Boazodoallu-Oddasat. ISSN 0333-4031. 2(3).
• Reimers, Eigil; Colman, Jonathan Edward; Eftestøl, Sindre; Kind, J.; Dervo, L. & Muniz, A. (2000). Frykt- og fluktavstander hos villrein i Sør-Norge. Villreinen. ISSN 0801-6321.
• Reimers, Eigil; Colman, Jonathan Edward; Eftestøl, Sindre; Kind, J.; Dervo, L. & Muniz, A. (2000). Fright response of reindeer in four geographical areas in Southern Norway after disturbance by humans on foot or skis.
• Colman, Jonathan Edward; Jordhøy, P.; Nellemann, C.; Strand, O. & Reimers, Eigil (2000). Fragmentation, overgrazing and anthropogenic disturbance in Norwegian reindeer ranges.
• Eftestøl, Sindre; Colman, Jonathan Edward & Reimers, Eigil (2000). Fright distances of Forelhogna reindeer after disturbance by humans on foot or skis.
• Colman, Jonathan Edward; Pedersen, Christian; Reimers, Eigil; Holand, Øystein & Moe, Stein Ragnar (2000). 24-h activity pattern of wild reindeer in summer with emphasis on behavior compensation at night due to limited grazing during the day. Rangifer Special Issue. ISSN 0801-6399. 20(12), p. 143–143.
• Colman, Jonathan Edward; Pedersen, Christian; Reimers, Eigil; Holand, Øystein; Moe, Stein R. & Hjermann, Dag (1999). Possible energy compensation at night as an adaption to severe energy use and limitations during day due to parasitic insect harasssment.
• Colman, Jonathan Edward; Pedersen, Christian; Bjaaen, Ragnhild; Reimers, Eigil; Holand, Øystein & Moe, Stein. R. [Show all 7 contributors for this article] (1999). Behaviour interactions between reindeer and sheep on shared summer range.
• Eftestøl, Sindre; Colman, Jonathan Edward & Reimers, Eigil (1999). Fright distances of Forelhogna reindeer after disturbance by humans on foot or skis.
• Birkeland, C.; Colman, Jonathan Edward & Reimers, Eigil (1999). Antlerless females in Svalbard reindeer – nutrition or genetics?
• Colman, Jonathan Edward; Pedersen, Christian; Bjaaen, R.; Reimers, Eigil; Holand, Øystein & Moe, Stein R. [Show all 7 contributors for this article] (1999). Behavior interactions between reindeer and sheep on shared summer range.
• Colman, Jonathan Edward; Pedersen, Christian; Reimers, Eigil; Holand, Øystein; Moe, Stein R. & Hjermann, Dag Øystein (1999). Possible energy compensation at night as an adaptation to severe energy use and limitations during day due to parasitic insect harassment.
• Colman, Jonathan Edward; Pedersen, Christian; Reimers, Eigil; Holand, Øystein; Moe, Stein R. & Hjermann, Dag Øystein (1999). Activity patterns of wild reindeer in summer; 24-hour periodicity?
• Holand, Øystein; Moe, Stein R.; Colman, Jonathan Edward & Reimers, Eigil (1998). Aversjon mot møkk - skyr rein og sau områder med mye møkk.
• Colman, Jonathan Edward; Bjaen, Ragnhild; Pedersen, Christian; Holand, Øystein; Reimers, Eigil & Moe, Stein R. (1998). Beiteinteraksjoner sau-rein. Villreinen. ISSN 0801-6321. 13, p. 56–59.
• Colman, Jonathan Edward; Bjaen, Ragnhild; Pedersen, Christian; Holand, Øystein; Reimers, Eigil & Moe, Stein R. (1998). 24-h activity pattern of wild reindeer in summer with emphasis on behavior compensation at night due to limited grazing during the day.
• Smedshaug, Christian Anton & Reimers, Eigil (1998). Rype og skogsfugl i Skottland. Villmarksliv. ISSN 0332-7442. p. 70–73.
• Holand, Øystein; Moe, Stein R.; Colman, Jonathan Edward & Reimers, Eigil (1998). Aversjon mot møkk - skyr rein og sau områder med mye møkk?
• Colman, Jonathan Edward & Reimers, Eigil (1998). Beiteinteraksjoner sau – rein samarbeidsprosjekt UiO og NLH.
• Pedersen, Åshild Ønvik; Paulsen, Ingrid M.; Albon, Steven; Arntsen, Gustav Busch; Hansen, Brage Bremset & Langvatn, Rolf [Show all 25 contributors for this article] (2019). Svalbard reindeer (Rangifer tarandus platyrhynchus). A status report. Norsk Polarinstitutt. ISSN 978-82-7666-427-0.
• Bråtå, Hans Olav; Ericsson, Birgitta; Reimers, Eigil & Skjeggedal, Terje (2014). Regionale planer for bruk og vern av villreinfjellene. Evaluering av prosess og planer. Østlandsforskning. ISSN 978-82-7356-729-1.
• Eftestøl, Sindre; Colman, Jonathan Edward; Gaup, Mathis A. & Reimers, Eigil (2004). Tyven vindpark, Hammerfest kommune -Konsekvensutredning for reindriften. Biologisk inst..
• Colman, Jonathan Edward; Eftestøl, Sindre; Gaup, Mathis A.; Reimers, Eigil & Flydal, Kjetil (2003). Skallhalsen vindpark, Vadsø kommune - Konsekvensutredning for reindriften. Biologisk inst.
• Colman, Jonathan Edward; Eftestøl, Sindre; Gaup, Mathis A.; Reimers, Eigil & Flydal, Kjetil (2003). Magerøya vindpark, Nordkapp kommune - Konsekvensutredning for reindriften. Biologisk inst..
• Flydal, Kjetil; Vistnes, Ingunn; Nellemann, Christian; Jordhøy, Per; Reimers, Eigil & Strand, Olav (2002). Rapport fra REIN-prosjektet. Norges forskningsråd. ISSN 8212016919.
• Colman, Jonathan Edward; Eftestøl, Sindre; Gaup, Mathis A.; Reimers, Eigil & Flydal, Kjetil (2002). Kjøllefjord vindpark, Lebesby kommune - Konsekvensutredning for reindriften. Biologisk inst.
• Colman, Jonathan Edward; Eftestøl, Sindre; Gaup, Mathis A.; Reimers, Eigil & Flydal, Kjetil (2002). Berlevåg vindpark, Berlevåg kommune - Konsekvensutredning for reindriften. Biologisk inst.
• Reimers, Eigil; Colman, Jonathan Edward; Holand, Øystein & Moe, Stein R. (2000). Rein og sau - Klauv mot Klauv. NFR finale report. NFR Bruk of forvaltning av utmark. Innsatsområde III: Interaksjoner mellom husdyr og vilt.
• Moe, Stein R.; Holand, Øystein; Colman, Jonathan Edward; Reimers, Eigil & Ådnøy, Tormod (1999). Effekt av beite på produksjon og kvalitet av stivstarr (Carex bigelòwii) i Setesdal Vesthei. Universitetet i Oslo.

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