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References

  • Aerts, R. & Chapin, F.S. (2000) The mineral nutrition of wild plants revisited: a re-evaluation of processes and patterns. Advances in Ecological Research, 30, 167.
  • Anonymous (2004) Ressursregnskap for Reindriftsforvaltningen. Reindriftsforvaltningen, Alta, Norway.
  • Beyer, H.L., Merrill, E.H., Varley, N. & Boyce, M.S. (2007) Willow on yellowstone's northern range: evidence for a trophic cascade? Ecological Applications, 17, 15631571.
  • Blok, D., Sass-Klaassen, U., Schaepman-Strub, G., Heijmans, M.M.P.D., Sauren, P. & Berendse, F. (2011) What are the main climate drivers for shrub growth in Northeastern Siberian tundra? Biogeosciences, 8, 11691179.
  • Bråthen, K.A., Ims, R.A., Yoccoz, N.G., Fauchald, P., Tveraa, T. & Hausner, V. (2007) Induced shift in ecosystem productivity? Extensive scale effects of abundant large herbivores. Ecosystems, 10, 773789.
  • Bryant, J.P. (1987) Feltleaf willow-snowshoe hare interactions - plant carbon nutrient balance and floodplain succession. Ecology, 68, 13191327.
  • Butler, L.G. & Kielland, K. (2008) Acceleration of vegetation turnover and element cycling by mammalian herbivory in riparian ecosystems. Journal of Ecology, 96, 136144.
  • Chapin, F.S., Sturm, M., Serreze, M.C., McFadden, J.P., Key, J.R., Lloyd, A.H. et al. (2005) Role of land-surface changes in Arctic summer warming. Science, 310, 657660.
  • Côté, S.D., Rooney, T.P., Tremblay, J.P., Dussault, C. & Waller, D.M. (2004) Ecological impacts of deer overabundance. Annual Review of Ecology Evolution and Systematics, 35, 113147.
  • Crête, M. & Doucet, G.J. (1998) Persistent suppression in dwarf birth after release from heavy summer browsing by caribou. Arctic and Alpine Research, 30, 126132.
  • Crête, M., Ouellet, J.P. & Lesage, L. (2001) Comparative effects on plants of caribou/reindeer, moose and white-tailed deer herbivory. Arctic, 54, 407417.
  • Ehrich, D., Henden, J.A., Ims, R.A., Doronina, L.O., Killengren, S.T., Lecomte, N. et al. (2012) The importance of willow thickets for ptarmigan and hares in shrub tundra: the more the better? Oecologia, 168, 141151.
  • Forbes, B.C. (2010) Reindeer herding. Artic Biodiversity Trends 2010: Selected Indicators of Change (eds T. Kurvits, B. Alfthan & E. Mork), pp. 8688. CAFF International secretariat, Akureyri, Iceland.
  • Forbes, B.C., Fauria, M.M. & Zetterberg, P. (2010) Russian Arctic warming and ‘greening’ are closely tracked by tundra shrub willows. Global Change Biology, 16, 15421554.
  • Forsyth, D.M., Barker, R.J., Morriss, G. & Scroggie, M.P. (2007) Modeling the relationship between fecal pellet indices and deer density. The Journal of Wildlife Management, 71, 964970.
  • Gelman, A. & Hill, J. (2007) Data Analysis Using Regression and Multilevel/Hierarchical Models. Cambridge University Press, Cambridge.
  • Gilg, O., Sittler, B., Sabard, B., Hurstel, A., Sane, R., Delattre, P. & Hanski, L. (2006) Functional and numerical responses of four lemming predators in high arctic Greenland. Oikos, 113, 193216.
  • Gunn, A., Russell, D., White, R.G. & Kofinas, G. (2009) Facing a future of change: wild migratory caribou and reindeer. Arctic, 62, IiiVi.
  • Henden, J.A., Ims, R.A., Yoccoz, N.G. & Killengreen, S.T. (2011a) Declining willow ptarmigan populations: the role of habitat structure and community dynamics. Basic and Applied Ecology, 12, 413422.
  • Henden, J.A., Ims, R.A., Yoccoz, N.G., Sorensen, R. & Killengreen, S.T. (2011b) Population dynamics of tundra voles in relation to configuration of willow thickets in southern arctic tundra. Polar Biology, 34, 533540.
  • den Herder, M., Virtanen, R. & Roininen, H. (2004) Effects of reindeer browsing on tundra willow and its associated insect herbivores. Journal of Applied Ecology, 41, 870879.
  • den Herder, M., Virtanen, R. & Roininen, H. (2008) Reindeer herbivory reduces willow growth and grouse forage in a forest-tundra ecotone. Basic and Applied Ecology, 9, 324331.
  • Ims, R.A. & Fuglei, E. (2005) Trophic interaction cycles in tundra ecosystems and the impact of climate change. BioScience, 55, 311322.
  • Ims, R.A. & Henden, J.-A. (2012) Collapse of an arctic bird community resulting from ungulate-induced loss of erect shrubs. Biological Conservation, 149, 25.
  • Ims, R.A., Yoccoz, N.G. & Killengreen, S. (2011) Determinants of lemming outbreaks. Proceedings of the National Academy of Sciences of the United States of America, 108, 19701974.
  • Keigley, R.B., Frisina, M.R. & Fager, C. (2003) A method for determining the onset year of intense browsing. Journal of Range Management, 56, 3338.
  • Killengreen, S., Ims, R.A., Yoccoz, N.G., Brathen, K.A., Henden, J.-A. & Schott, T. (2007) Structural characteristics of a low Arctic tundra ecosystem and the retreat of the Arctic fox. Biological Conservation, 135, 475488.
  • Kitti, H., Forbes, B.C. & Oksanen, J. (2009) Long- and short-term effects of reindeer grazing on tundra wetland vegetation. Polar Biology, 32, 253261.
  • Lantz, T.C., Gergel, S.E. & Kokelj, S.V. (2010) Spatial heterogeneity in the shrub tundra ecotone in the Mackenzie Delta Region, Northwest Territories: implications for Arctic environmental change. Ecosystems, 13, 194204.
  • Macias-Fauria, M., Forbes, B.C., Zetterberg, P. & Kumpula, T. (2012) Eurasian Arctic greening reveals teleconnections and the potential for structurally novel ecosystems. Nature Climate Change, 2, 613618.
  • Manson, R.H., Ostfeld, R.S. & Canham, C.D. (2001) Long-term effects of rodent herbivores on tree invasion dynamics along forest-field edges. Ecology, 82, 33203329.
  • Moen, J. & Oksanen, L. (1998) Long-term exclusion of folivorous mammals in two arctic-alpine plant communities: a test of the hypothesis of exploitation ecosystems. Oikos, 82, 333346.
  • Myers-Smith, I.H., Forbes, B.C., Wilmking, M., Hallinger, M., Lantz, T., Blok, D. et al. (2011) Shrub expansion in tundra ecosystems: dynamics, impacts and research priorities. Environmental Research Letters, 6, 045509.
  • Naito, A.T. & Cairns, D.M. (2011) Patterns and processes of global shrub expansion. Progress in Physical Geography, 35, 423442.
  • Olofsson, J., Oksanen, L., Callaghan, T., Hulme, P.E., Oksanen, T. & Suominen, O. (2009) Herbivores inhibit climate-driven shrub expansion on the tundra. Global Change Biology, 15, 26812693.
  • Ostfeld, R.S. & Canham, C.D. (1993) Effects of meadow vole population-density on tree seedling survival in old fields. Ecology, 74, 17921801.
  • Pajunen, A., Virtanen, R. & Roininen, H. (2008) The effects of reindeer grazing on the composition and species richness of vegetation in forest-tundra ecotone. Polar Biology, 31, 12331244.
  • Pajunen, A.M., Kaarlejarvi, E.M., Forbes, B.C. & Virtanen, R. (2010) Compositional differentiation, vegetation-environment relationships and classification of willow-characterised vegetation in the western Eurasian Arctic. Journal of Vegetation Science, 21, 107119.
  • Post, E. & Pedersen, C. (2008) Opposing plant community responses to warming with and without herbivores. Proceedings of the National Academy of Sciences of the United States of America, 105, 1235312358.
  • Post, E., Forchhammer, M.C., Bret-Harte, M.S., Callaghan, T.V., Christensen, T.R., Elberling, B. et al. (2009) Ecological dynamics across the Arctic associated with recent climate change. Science, 325, 13551358.
  • Ravolainen, V.T., Yoccoz, N.G., Brathen, K.A., Ims, R.A., Iversen, M. & Gonzalez, V.T. (2010) Additive partitioning of diversity reveals no scale-dependent impacts of large ungulates on the structure of tundra plant communities. Ecosystems, 13, 157170.
  • Ravolainen, V.T., Bråthen, K.A., Ims, R.A., Yoccoz, N.G., Henden, J.A. & Killengreen, S.T. (2011) Rapid, landscape scale responses in riparian tundra vegetation to exclusion of small and large mammalian herbivores. Basic and Applied Ecology, 12, 643653.
  • Ravolainen, V., Bråthen, K.A., Ims, R.A., Yoccoz, N.G. & Soininen, E. (2013) Shrub patch configuration at the landscape scale is related to diversity of adjacent herbaceous vegetation. Plant Ecology & Diversity, 6, 257268.
  • Ripple, W.J. & Beschta, R.L. (2006) Linking wolves to willows via risk-sensitive foraging by ungulates in the northern Yellowstone ecosystem. Forest Ecology and Management, 230, 96106.
  • Ripple, W.J. & Beschta, R.L. (2012) Trophic cascades in Yellowstone: the first 15 years after wolf reintroduction. Biological Conservation, 145, 205213.
  • Roininen, H., Nyman, T. & Zinovjev, A.G. (2005) Biology, ecology, and evolution of gall-inducing sawflies (Hymenoptera: Tenthredinidae and Xyelidae). Biology, Ecology, and Evolution of Gall-inducing Arthropods (eds A. Raman, C.W. Schaefer & T.M. Withers), pp. 467494. Science Publishers, Inc., Enfield, NH.
  • Schickhoff, U., Walker, M.D. & Walker, D.A. (2002) Riparian willow communities on the Arctic Slope of Alaska and their environmental relationships: a classification and ordination analysis. Phytocoenologia, 32, 145204.
  • Sipura, M., Ikonen, A., Tahvanainen, J. & Roininen, H. (2002) Why does the leaf beetle Galerucella lineola F. attack wetland willows? Ecology, 83, 33933407.
  • Soininen, E., Ravolainen, V., Bråthen, K.A., Yoccoz, N.G., Gielly, L. & Ims, R.A. (2013) Arctic small rodents have diverse diets and flexible food selection. PLoS One, 8, e68128.
  • Speed, J.D.M., Austrheim, G., Hester, A.J. & Mysterud, A. (2010) Experimental evidence for herbivore limitation of the treeline. Ecology, 91, 34143420.
  • Speed, J.D.M., Austrheim, G., Hester, A.J. & Mysterud, A. (2011) Growth limitation of mountain birch caused by sheep browsing at the altitudinal treeline. Forest Ecology and Management, 261, 13441352.
  • Speed, J.D.M., Austrheim, G., Hester, A.J. & Mysterud, A. (2013) The response of alpine Salix shrubs to long-term browsing varies with elevation and herbivore density. Arctic, Antarctic, and Alpine Research, 45, 584593.
  • Sturm, M. (2010) Arctic plants feel the heat. Scientific American, 302, 6673.
  • Sturm, M., Douglas, T., Racine, C. & Liston, G.E. (2005) Changing snow and shrub conditions affect albedo with global implications. Journal of Geophysical Research: Biogeosciences, 110, G01004, doi:10.1029/2005JG000013.
  • Taillon, J., Brodeur, V., Festa-Bianchet, M. & Cote, S.D. (2011) Variation in body condition of migratory caribou at calving and weaning: which measures should we use? Ecoscience, 18, 295303.
  • Tape, K., Sturm, M. & Racine, C. (2006) The evidence for shrub expansion in Northern Alaska and the Pan-Arctic. Global Change Biology, 12, 686702.
  • Tape, K.D., Lord, R., Marshall, H.P. & Ruess, R.W. (2010) Snow-mediated ptarmigan browsing and shrub expansion in arctic Alaska. Ecoscience, 17, 186193.
  • Tape, K.D., Hallinger, M., Welker, J.M. & Ruess, R.W. (2012) Landscape heterogeneity of shrub expansion in Arctic Alaska. Ecosystems, 15, 711724.
  • Tast, J. (1966) The root vole, Microtus oeconomus (Pallas), as an inhabitant of seasonally flooded land. Annales Zoologici Fennici, 3, 127171.
  • Vors, L.S. & Boyce, M.S. (2009) Global declines of caribou and reindeer. Global Change Biology, 15, 26262633.
  • Walker, M.D., Wahren, C.H., Hollister, R.D., Henry, G.H.R., Ahlquist, L.E., Alatalo, J.M. et al. (2006) Plant community responses to experimental warming across the tundra biome. Proceedings of the National Academy of Sciences of the United States of America, 103, 13421346.
  • Walker, D.A., Epstein, H.E., Raynolds, M.K., Kuss, P., Kopecky, M.A., Frost, G.V. et al. (2012) Environment, vegetation and greenness (NDVI) along the North America and Eurasia Arctic transects. Environmental Research Letters, 7, 015504.
  • Wookey, P.A., Aerts, R., Bardgett, R.D., Baptist, F., Bråthen, K.A., Cornelissen, J.H.C. et al. (2009) Ecosystem feedbacks and cascade processes: understanding their role in the responses of Arctic and alpine ecosystems to environmental change. Global Change Biology, 15, 11531172.