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End-user involvement to improve predictions and management of populations with complex dynamics and multiple drivers.

Henden JA, Ims RA, Yoccoz NG, Asbjørnsen EJ, Stien A, Mellard JP, Tveraa T, Marolla F, Uhd Jepsen J.

Ecol Appl. 2020 Mar 11:e02120. doi: 10.1002/eap.2120. [Epub ahead of print]


Dietary variation in Icelandic arctic fox (Vulpes lagopus) over a period of 30 years assessed through stable isotopes.

Carbonell Ellgutter JA, Ehrich D, Killengreen ST, Ims RA, Unnsteinsdóttir ER.

Oecologia. 2020 Feb;192(2):403-414. doi: 10.1007/s00442-019-04580-0. Epub 2019 Dec 21.


Correction to: Documenting lemming population change in the Arctic: Can we detect trends?

Ehrich D, Schmidt NM, Gauthier G, Alisauskas R, Angerbjörn A, Clark K, Ecke F, Eide NE, Framstad E, Frandsen J, Franke A, Gilg O, Giroux MA, Henttonen H, Hörnfeldt B, Ims RA, Kataev GD, Kharitonov SP, Killengreen ST, Krebs CJ, Lanctot RB, Lecomte N, Menyushina IE, Morris DW, Morrisson G, Oksanen L, Oksanen T, Olofsson J, Pokrovsky IG, Popov IY, Reid D, Roth JD, Saalfeld ST, Samelius G, Sittler B, Sleptsov SM, Smith PA, Sokolov AA, Sokolova NA, Soloviev MY, Solovyeva DV.

Ambio. 2020 Mar;49(3):801-804. doi: 10.1007/s13280-019-01262-2.


Documenting lemming population change in the Arctic: Can we detect trends?

Ehrich D, Schmidt NM, Gauthier G, Alisauskas R, Angerbjörn A, Clark K, Ecke F, Eide NE, Framstad E, Frandsen J, Franke A, Gilg O, Giroux MA, Henttonen H, Hörnfeldt B, Ims RA, Kataev GD, Kharitonov SP, Killengreen ST, Krebs CJ, Lanctot RB, Lecomte N, Menyushina IE, Morris DW, Morrisson G, Oksanen L, Oksanen T, Olofsson J, Pokrovsky IG, Popov IY, Reid D, Roth JD, Saalfeld ST, Samelius G, Sittler B, Sleptsov SM, Smith PA, Sokolov AA, Sokolova NA, Soloviev MY, Solovyeva DV.

Ambio. 2020 Mar;49(3):786-800. doi: 10.1007/s13280-019-01198-7. Epub 2019 Jul 22. Erratum in: Ambio. 2019 Oct 11;:.


Circumpolar status of Arctic ptarmigan: Population dynamics and trends.

Fuglei E, Henden JA, Callahan CT, Gilg O, Hansen J, Ims RA, Isaev AP, Lang J, McIntyre CL, Merizon RA, Mineev OY, Mineev YN, Mossop D, Nielsen OK, Nilsen EB, Pedersen ÅØ, Schmidt NM, Sittler B, Willebrand MH, Martin K.

Ambio. 2020 Mar;49(3):749-761. doi: 10.1007/s13280-019-01191-0. Epub 2019 May 9.


Rodent population cycle as a determinant of gastrointestinal nematode abundance in a low-arctic population of the red fox.

Mørk T, Ims RA, Killengreen ST.

Int J Parasitol Parasites Wildl. 2019 Mar 22;9:36-41. doi: 10.1016/j.ijppaw.2019.03.002. eCollection 2019 Aug.


Contrasting changes in space use induced by climate change in two Arctic marine mammal species.

Hamilton CD, Vacquié-Garcia J, Kovacs KM, Ims RA, Kohler J, Lydersen C.

Biol Lett. 2019 Mar 29;15(3):20180834. doi: 10.1098/rsbl.2018.0834.


Spatial synchrony in sub-arctic geometrid moth outbreaks reflects dispersal in larval and adult life cycle stages.

Vindstad OPL, Jepsen JU, Yoccoz NG, Bjørnstad ON, Mesquita MDS, Ims RA.

J Anim Ecol. 2019 Aug;88(8):1134-1145. doi: 10.1111/1365-2656.12959. Epub 2019 Mar 12.


Habitats and movement patterns of white whales Delphinapterus leucas in Svalbard, Norway in a changing climate.

Vacquié-Garcia J, Lydersen C, Ims RA, Kovacs KM.

Mov Ecol. 2018 Oct 24;6:21. doi: 10.1186/s40462-018-0139-z. eCollection 2018.


Transferability of biotic interactions: Temporal consistency of arctic plant-rodent relationships is poor.

Soininen EM, Henden JA, Ravolainen VT, Yoccoz NG, Bråthen KA, Killengreen ST, Ims RA.

Ecol Evol. 2018 Sep 17;8(19):9697-9711. doi: 10.1002/ece3.4399. eCollection 2018 Oct.


Seasonal difference in temporal transferability of an ecological model: near-term predictions of lemming outbreak abundances.

Kleiven EF, Henden JA, Ims RA, Yoccoz NG.

Sci Rep. 2018 Oct 15;8(1):15252. doi: 10.1038/s41598-018-33443-6.


Rangifer management controls a climate-sensitive tundra state transition.

Bråthen KA, Ravolainen VT, Stien A, Tveraa T, Ims RA.

Ecol Appl. 2017 Dec;27(8):2416-2427. doi: 10.1002/eap.1618. Epub 2017 Nov 3.


Why Do the Boreal Forest Ecosystems of Northwestern Europe Differ from Those of Western North America?

Boonstra R, Andreassen HP, Boutin S, Hušek J, Ims RA, Krebs CJ, Skarpe C, Wabakken P.

Bioscience. 2016 Sep 1;66(9):722-734. doi: 10.1093/biosci/biw080. Epub 2016 Jul 20.


An Arctic predator-prey system in flux: climate change impacts on coastal space use by polar bears and ringed seals.

Hamilton CD, Kovacs KM, Ims RA, Aars J, Lydersen C.

J Anim Ecol. 2017 Sep;86(5):1054-1064. doi: 10.1111/1365-2656.12685. Epub 2017 May 22.


Continental-scale travelling waves in forest geometrids in Europe: an evaluation of the evidence.

Jepsen JU, Vindstad OP, Barraquand F, Ims RA, Yoccoz NG.

J Anim Ecol. 2016 Mar;85(2):385-90. doi: 10.1111/1365-2656.12444. Epub 2016 Jan 16.


Predictions replaced by facts: a keystone species' behavioural responses to declining arctic sea-ice.

Hamilton CD, Lydersen C, Ims RA, Kovacs KM.

Biol Lett. 2015 Nov;11(11). pii: 20150803. doi: 10.1098/rsbl.2015.0803.


Identification and Evaluation of 21 Novel Microsatellite Markers from the Autumnal Moth (Epirrita autumnata) (Lepidoptera: Geometridae).

Aarnes SG, Fløystad I, Schregel J, Vindstad OP, Jepsen JU, Eiken HG, Ims RA, Hagen SB.

Int J Mol Sci. 2015 Sep 17;16(9):22541-54. doi: 10.3390/ijms160922541.


Seasonal, Oceanographic and Atmospheric Drivers of Diving Behaviour in a Temperate Seal Species Living in the High Arctic.

Blanchet MA, Lydersen C, Ims RA, Kovacs KM.

PLoS One. 2015 Jul 21;10(7):e0132686. doi: 10.1371/journal.pone.0132686. eCollection 2015.


Rough-legged buzzards, Arctic foxes and red foxes in a tundra ecosystem without rodents.

Pokrovsky I, Ehrich D, Ims RA, Kondratyev AV, Kruckenberg H, Kulikova O, Mihnevich J, Pokrovskaya L, Shienok A.

PLoS One. 2015 Feb 18;10(2):e0118740. doi: 10.1371/journal.pone.0118740. eCollection 2015.


Phenology and cover of plant growth forms predict herbivore habitat selection in a high latitude ecosystem.

Iversen M, Fauchald P, Langeland K, Ims RA, Yoccoz NG, Bråthen KA.

PLoS One. 2014 Jun 27;9(6):e100780. doi: 10.1371/journal.pone.0100780. eCollection 2014.


Numerical responses of saproxylic beetles to rapid increases in dead wood availability following geometrid moth outbreaks in sub-arctic mountain birch forest.

Vindstad OP, Schultze S, Jepsen JU, Biuw M, Kapari L, Sverdrup-Thygeson A, Ims RA.

PLoS One. 2014 Jun 9;9(6):e99624. doi: 10.1371/journal.pone.0099624. eCollection 2014.


Sources of variation in small rodent trophic niche: new insights from DNA metabarcoding and stable isotope analysis.

Soininen EM, Ehrich D, Lecomte N, Yoccoz NG, Tarroux A, Berteaux D, Gauthier G, Gielly L, Brochmann C, Gussarova G, Ims RA.

Isotopes Environ Health Stud. 2014;50(3):361-81. doi: 10.1080/10256016.2014.915824. Epub 2014 May 15.


Bears are simply voles writ large: social structure determines the mechanisms of intrinsic population regulation in mammals.

Odden M, Ims RA, Støen OG, Swenson JE, Andreassen HP.

Oecologia. 2014 May;175(1):1-10. doi: 10.1007/s00442-014-2892-z. Epub 2014 Jan 31.


Haul-out behaviour of the world's northernmost population of harbour seals (Phoca vitulina) throughout the year.

Hamilton CD, Lydersen C, Ims RA, Kovacs KM.

PLoS One. 2014 Jan 22;9(1):e86055. doi: 10.1371/journal.pone.0086055. eCollection 2014.


Antiparasite treatments reduce humoral immunity and impact oxidative status in raptor nestlings.

Hanssen SA, Bustnes JO, Schnug L, Bourgeon S, Johnsen TV, Ballesteros M, Sonne C, Herzke D, Eulaers I, Jaspers VL, Covaci A, Eens M, Halley DJ, Moum T, Ims RA, Erikstad KE.

Ecol Evol. 2013 Dec;3(16):5157-66. doi: 10.1002/ece3.891. Epub 2013 Nov 22.


Indirect food web interactions mediated by predator-rodent dynamics: relative roles of lemmings and voles.

Ims RA, Henden JA, Thingnes AV, Killengreen ST.

Biol Lett. 2013 Oct 30;9(6):20130802. doi: 10.1098/rsbl.2013.0802. Print 2013.


Demographic responses of a site-faithful and territorial predator to its fluctuating prey: long-tailed skuas and arctic lemmings.

Barraquand F, Høye TT, Henden JA, Yoccoz NG, Gilg O, Schmidt NM, Sittler B, Ims RA.

J Anim Ecol. 2014 Mar;83(2):375-87. doi: 10.1111/1365-2656.12140. Epub 2013 Oct 15.


Plasma concentrations of organohalogenated pollutants in predatory bird nestlings: associations to growth rate and dietary tracers.

Bustnes JO, Bårdsen BJ, Herzke D, Johnsen TV, Eulaers I, Ballesteros M, Hanssen SA, Covaci A, Jaspers VL, Eens M, Sonne C, Halley D, Moum T, Nøst TH, Erikstad KE, Ims RA.

Environ Toxicol Chem. 2013 Nov;32(11):2520-7. doi: 10.1002/etc.2329. Epub 2013 Sep 6.


Arctic Small Rodents Have Diverse Diets and Flexible Food Selection.

Soininen EM, Ravolainen VT, Bråthen KA, Yoccoz NG, Gielly L, Ims RA.

PLoS One. 2013 Jun 27;8(6):e68128. doi: 10.1371/journal.pone.0068128. Print 2013.


How spatial variation in areal extent and configuration of labile vegetation states affect the riparian bird community in Arctic tundra.

Henden JA, Yoccoz NG, Ims RA, Langeland K.

PLoS One. 2013 May 14;8(5):e63312. doi: 10.1371/journal.pone.0063312. Print 2013.


Ecological and spatial factors drive intra- and interspecific variation in exposure of subarctic predatory bird nestlings to persistent organic pollutants.

Eulaers I, Jaspers VL, Bustnes JO, Covaci A, Johnsen TV, Halley DJ, Moum T, Ims RA, Hanssen SA, Erikstad KE, Herzke D, Sonne C, Ballesteros M, Pinxten R, Eens M.

Environ Int. 2013 Jul;57-58:25-33. doi: 10.1016/j.envint.2013.03.009. Epub 2013 Apr 28.


Outbreaks by canopy-feeding geometrid moth cause state-dependent shifts in understorey plant communities.

Karlsen SR, Jepsen JU, Odland A, Ims RA, Elvebakk A.

Oecologia. 2013 Nov;173(3):859-70. doi: 10.1007/s00442-013-2648-1. Epub 2013 Apr 9.


Europe-wide dampening of population cycles in keystone herbivores.

Cornulier T, Yoccoz NG, Bretagnolle V, Brommer JE, Butet A, Ecke F, Elston DA, Framstad E, Henttonen H, Hörnfeldt B, Huitu O, Imholt C, Ims RA, Jacob J, Jędrzejewska B, Millon A, Petty SJ, Pietiäinen H, Tkadlec E, Zub K, Lambin X.

Science. 2013 Apr 5;340(6128):63-6. doi: 10.1126/science.1228992.


The role of colonization in the dynamics of patchy populations of a cyclic vole species.

Glorvigen P, Gundersen G, Andreassen HP, Ims RA.

Oecologia. 2013 Sep;173(1):161-7. doi: 10.1007/s00442-013-2614-y. Epub 2013 Feb 27.


Local and regional determinants of colonisation-extinction dynamics of a riparian mainland-island root vole metapopulation.

Glorvigen P, Andreassen HP, Ims RA.

PLoS One. 2013;8(2):e56462. doi: 10.1371/journal.pone.0056462. Epub 2013 Feb 20.


Climate events synchronize the dynamics of a resident vertebrate community in the high Arctic.

Hansen BB, Grøtan V, Aanes R, Sæther BE, Stien A, Fuglei E, Ims RA, Yoccoz NG, Pedersen AØ.

Science. 2013 Jan 18;339(6117):313-5. doi: 10.1126/science.1226766.


Congruent responses to weather variability in high arctic herbivores.

Stien A, Ims RA, Albon SD, Fuglei E, Irvine RJ, Ropstad E, Halvorsen O, Langvatn R, Loe LE, Veiberg V, Yoccoz NG.

Biol Lett. 2012 Dec 23;8(6):1002-5. doi: 10.1098/rsbl.2012.0764. Epub 2012 Sep 26.


Response of an arctic predator guild to collapsing lemming cycles.

Schmidt NM, Ims RA, Høye TT, Gilg O, Hansen LH, Hansen J, Lund M, Fuglei E, Forchhammer MC, Sittler B.

Proc Biol Sci. 2012 Nov 7;279(1746):4417-22. Epub 2012 Sep 12.


The nature of lemming cycles on Wrangel: an island without small mustelids.

Menyushina IE, Ehrich D, Henden JA, Ims RA, Ovsyanikov NG.

Oecologia. 2012 Oct;170(2):363-71. doi: 10.1007/s00442-012-2319-7. Epub 2012 Apr 15.


Blood plasma clinical-chemical parameters as biomarker endpoints for organohalogen contaminant exposure in Norwegian raptor nestlings.

Sonne C, Bustnes JO, Herzke D, Jaspers VL, Covaci A, Eulaers I, Halley DJ, Moum T, Ballesteros M, Eens M, Ims RA, Hanssen SA, Erikstad KE, Johnsen TV, Rigét FF, Jensen AL, Kjelgaard-Hansen M.

Ecotoxicol Environ Saf. 2012 Jun;80:76-83. doi: 10.1016/j.ecoenv.2012.02.012. Epub 2012 Mar 24.


Climate change and the ecology and evolution of Arctic vertebrates.

Gilg O, Kovacs KM, Aars J, Fort J, Gauthier G, Grémillet D, Ims RA, Meltofte H, Moreau J, Post E, Schmidt NM, Yannic G, Bollache L.

Ann N Y Acad Sci. 2012 Feb;1249:166-90. doi: 10.1111/j.1749-6632.2011.06412.x. Epub 2012 Feb 13. Review.


Patterns and processes of dispersal behaviour in arvicoline rodents.

Le Galliard JF, Rémy A, Ims RA, Lambin X.

Mol Ecol. 2012 Feb;21(3):505-23. doi: 10.1111/j.1365-294X.2011.05410.x. Epub 2011 Dec 29.


The importance of willow thickets for ptarmigan and hares in shrub tundra: the more the better?

Ehrich D, Henden JA, Ims RA, Doronina LO, Killengren ST, Lecomte N, Pokrovsky IG, Skogstad G, Sokolov AA, Sokolov VA, Yoccoz NG.

Oecologia. 2012 Jan;168(1):141-51. doi: 10.1007/s00442-011-2059-0. Epub 2011 Jul 21.


Intrapopulation variability shaping isotope discrimination and turnover: experimental evidence in arctic foxes.

Lecomte N, Ahlstrøm O, Ehrich D, Fuglei E, Ims RA, Yoccoz NG.

PLoS One. 2011;6(6):e21357. doi: 10.1371/journal.pone.0021357. Epub 2011 Jun 23.


Phenological diversity in the interactions between winter moth (Operophtera brumata) larvae and parasitoid wasps in sub-arctic mountain birch forest.

Vindstad OP, Hagen SB, Jepsen JU, Kapari L, Schott T, Ims RA.

Bull Entomol Res. 2011 Dec;101(6):705-14. doi: 10.1017/S0007485311000277. Epub 2011 Jun 8.


The importance of marine vs. human-induced subsidies in the maintenance of an expanding mesocarnivore in the arctic tundra.

Killengreen ST, Lecomte N, Ehrich D, Schott T, Yoccoz NG, Ims RA.

J Anim Ecol. 2011 Sep;80(5):1049-60. doi: 10.1111/j.1365-2656.2011.01840.x. Epub 2011 Apr 8.


Determinants of lemming outbreaks.

Ims RA, Yoccoz NG, Killengreen ST.

Proc Natl Acad Sci U S A. 2011 Feb 1;108(5):1970-4. doi: 10.1073/pnas.1012714108. Epub 2011 Jan 18.


Are population outbreaks in sub-arctic geometrids terminated by larval parasitoids?

Schott T, Hagen SB, Ims RA, Yoccoz NG.

J Anim Ecol. 2010 May;79(3):701-8. doi: 10.1111/j.1365-2656.2010.01673.x. Epub 2010 Mar 5.


Spatially mismatched trophic dynamics: cyclically outbreaking geometrids and their larval parasitoids.

Hagen SB, Jepsen JU, Schott T, Ims RA.

Biol Lett. 2010 Aug 23;6(4):566-9. doi: 10.1098/rsbl.2009.1002. Epub 2010 Jan 27.

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