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References

  • ACIA. 2005. Arctic climate impact assessment. Cambridge, UK: Cambridge University Press, 1042.
  • Arft AM, Walker MD, Gurevitch J, Alatalo JM, Bret-Harte MS, Dale M, Diemer M, Gugerli F, Henry GHR, Jones MH et al . 1999. Responses of tundra plants to experimental warming: meta-analysis of the International Tundra Experiment. Ecological Monographs 69: 491511.
  • Atkinson D. 2000. Root characteristics: Why and what to measure. In: SmitAL, BengoughAG, EngelsC, Van NoordwijkM, PellerinS, Van De GeijnSC, eds. Root methods: a handbook. Heidelberg, Germany: Springer, 132.
  • Bäckman JSK, Kasimir Klemedtsson Å. 2003. Increased nitrification in acid coniferous forest soil due to high nitrogen deposition and liming. Scandinavian Journal of Forest Research 18: 514524.
  • BassiriRad H. 2000. Kinetics of nutrient uptake by roots: responses to global change. New Phytologist 147: 155169.
  • Beylich AA, Kolstrup E, Linde N, Pedersen LB, Thyrsted T, Gintz D, Dynesius L. 2003. Assessment of chemical denudation rates using hydrological measurements, water chemistry analysis and electromagnetic geophysical data. Permafrost and Periglacial Processes 14: 387397.
  • Billings WD, Mooney HA. 1968. The ecology of arctic and alpine plants. Biology Reviews 43: 481530.
  • Björk RG, Klemedtsson L, Molau U, Harndorf J, Ödman A, Giesler R. 2007. Linkages between N turnover and plant community structure in a tundra landscape. Plant and Soil 294: 247261.
  • Callaghan TV, Headley AD, Lee JA. 1991. Root function related to the morphology, life history and ecology of tundra plants. In: AtkinsonD, ed. Plant root growth: an ecological perspective. Oxford, UK: Blackwell, 311340.
  • Carter TR. 1998. Changes in the thermal growing season in Nordic countries during the past century and prospects for the future. Agricultural and Food Science in Finland 7: 161179.
  • Chapin FS III. 1980. The mineral nutrition of wild plants. Annual Review of Ecology and Systematics 11: 233260.
  • Chapin FS III, Shaver GR. 1985. Individualistic growth response of tundra plant species to environmental manipulations in the field. Ecology 66: 564576.
  • Chapin FS III, Shaver GR. 1996. Physiological and growth responses of arctic plants to a field experiment simulating climatic change. Ecology 77: 822840.
  • Chapin FS III, Shaver GR, Giblin AE, Nadelhoffer KJ, Laundre JA. 1995. Responses of arctic tundra to experimental and observed changes in climate. Ecology 76: 694711.
  • De Boer W, Duyts H, Laanbroek HJ. 1988. Autotrophic nitrification in a fertilized acid heath soil. Soil Biology and Biochemistry 20: 845850.
  • Eissenstat DM. 1992. Costs and benefits of constructing roots of small diameter. Journal of Plant Nutrition 15: 763782.
  • Grime JP. 1979. Plant strategies and vegetation processes. Chichester, UK: Wiley.
  • Guo DL, Mitchell RJ, Hendricks JJ. 2004. Fine root branch orders respond differently to carbon source-sink manipulations in a longleaf pine forest. Oecologia 140: 450457.
  • Harper JL, Jones M, Sackville Hamilton NR. 1991. The evolution of roots and the problems of analysing their behaviour. In: AtkinsonD, ed. Plant root growth: an ecological perspective. Oxford, UK: Blackwell, 322.
  • Hill JO, Simpson RJ, Moore AD, Chapman DF. 2006. Morphology and response of roots of pasture species to phosphorus and nitrogen nutrition. Plant and Soil 286: 719.
  • Hodge A. 2004. The plastic plant: root responses to heterogeneous supplies of nutrients. New Phytologist 162: 924.
  • Hollister RD, Webber PJ. 2000. Biotic validation of small open-top chambers in a tundra ecosystem. Global Change Biology 6: 835842.
  • Jackson LE, Schimel JP, Firestone MK. 1989. Short-term partitioning of ammonium and nitrate between plants and microbes in an annual grassland. Soil Biology and Biochemistry 21: 409415.
  • Jackson RB, Candell J, Ehleringer JR, Mooney HA, Sala OE, Schulze ED. 1996. A global analysis of root distribution for terrestrial biomes. Oecologia 108: 389411.
  • Jackson RB, Mooney HA, Schulze ED. 1997. A global budget for fine root biomass, surface area, and nutrient contents. Proceedings of the National Academy of Sciences, USA 94: 73627366.
  • Jägerbrand AK. 2005. Subarctic bryophyte ecology: phenotypic variation and responses to simulated environmental change. PhD thesis, Göteborg University, Göteborg, Sweden.
  • Jiang Q-Q, Bakken LR. 1999. Nitrous oxide production and methane oxidation by different ammonia-oxidizing bacteria. Applied and Environmental Microbiology 65: 26792684.
  • Johnson DW, Edwards NT. 1979. The effects of stem girdling on biochemical cycles within mixed deciduous forest in eastern Tennessee: soil nitrogen mineralization and nitrification rates. Oecologia 40: 259271.
  • Joslin JD, Gaudinski JB, Torn MS, Riley WJ, Hanson PJ. 2006. Fine-root turnover patterns and their relationship to root diameter and soil depth in a 14C-labeled hardwood forest. New Phytologist 172: 523535.
  • Klemedtsson L, Kasimir Klemedtsson Å, Moldan F, Weslien P. 1997. Nitrous oxide emission from Swedish forest soils in relation to liming and simulated increased N-deposition. Biology and Fertility of Soils 25: 290295.
  • Klemedtsson L, Svensson BH, Lindberg T, Rosswall T. 1977. The use of acetylene inhibition of nitrous oxide reductase in quantifying denitrification. Swedish Journal of Agricultural Research 7: 179185.
  • Kuzyakov Y. 2002. Factors affecting rhizosphere priming effects. Journal of Plant Nutrition and Soil Science 165: 382396.
  • Lensi R, Gourbière F, Josserand A. 1985. Measurement of small amounts of nitrate in an acid soil by N2O production. Soil Biology and Biochemistry 17: 733734.
  • Lensi R, Mazurier F, Gourbière F, Josserand A. 1986. Rapid determination of the nitrification potential of an acid forest soil and assessment of its variability. Soil Biology and Biochemistry 18: 239240.
  • Lindblad KEM. 2007. Tundra landscape ecology: diversity across scales. PhD thesis, Göteborg University, Göteborg, Sweden.
  • Lõhmus K, Oja T, Lasn R. 1989. Specific root area: a soil characteristic. Plant and Soil 119: 245249.
  • Majdi H. 2001. Changes in fine root production and longevity in relation to water and nutrient availability in a Norway spruce stand in northern Sweden. Tree Physiology 21: 10571061.
  • Majdi H, Öhrvik J. 2004. Interactive effects of soil warming and fertilization on root production, mortality, and longevity in Norway spruce stand in Northern Sweden. Global Change Biology 10: 182188.
  • Majdi H, Viebke C-G. 2004. Effects of fertilization with dolomite lime + PK or wood ash on root distribution and morphology in a Norway spruce stand in Southwest Sweden. Forest Science 50: 802809.
  • Marion GM, Bockheim JG, Brown J. 1997a. Arctic soils and the ITEX experiment. Global Change Biology 3: 3343.
  • Marion GM, Henry GHR, Freckman DW, Johnstone J, Jones G, Jones MH, Lévesque E, Molau U, Mølgaard P, Parson AN et al . 1997b. Open-top designs for manipulating field temperature in high latitude ecosystems. Global Change Biology 3: 2032.
  • Molau U, Alatalo JM. 1998. Responses of subarctic-alpine plant communities to simulated environmental change: biodiversity of bryophytes, lichens, and vascular plants. Ambio 27: 322329.
  • Molau U, Kling J, Lindblad K, Björk R, Dänhardt J, Ließ A. 2003. A GIS assessment of alpine biodiversity at a range of scales. In: NagyL, GrabherrG, KörnerC, ThompsonDBA, eds. Alpine biodiversity in Europe. Berlin, Germany: Springer, 221229.
  • MolauU, MølgaardP (eds). 1996. ITEX manual. Copenhagen, Denmark: Danish Polar Center.
  • Molau U, Nordenhäll U, Eriksen B. 2005. Onset of flowering and climate variability in an alpine landscape: a 10-year study from Swedish Lapland. American Journal of Botany 92: 422431.
  • Myrold DD. 1999. Transformation of nitrogen. In: SylviaDM, FuhrmannJJ, HartelPG, ZubererDA, eds. Principles and applications of soil microbiology. Upple Saddle River, NJ, USA: Prentice Hall, 259294.
  • Økland RH, Økland T, Rydgren K. 2001. Vegetation-environment relationships of boreal spruce swamp forest in Østmarka Nature Reserve, SE Norway. Sommerfeltia 29: 1190.
  • Ostonen I, Lõhmus K, Lasn R. 1999. The role of soil conditions in fine root ecomorphology in Norway spruce (Picea abies (L.) Karst.). Plant and Soil 208: 283292.
  • Pendall E, Bridgham S, Hanson PJ, Hungate B, Kicklighter DW, Johnson DW, Law BE, Luo Y, Megonigal JP, Olsrud M et al . 2004. Below-ground process responses to elevated CO2 and temperature: a discussion of observations, measurement methods, and models. New Phytologist 162: 311322.
  • Pregitzer KS, DeForest JL, Burton AJ, Allen MF, Ruess RW, Hendrick RL. 2002. Fine root architecture of nine North American trees. Ecological Monographs 72: 293309.
  • Pregitzer KS, King JS, Burton AJ, Brown SE. 2000. Responses of tree fine roots to temperature. New Phytologist 147: 105115.
  • Pregitzer KS, Laskowski MJ, Burton AJ, Lessard VC, Zak DR. 1998. Variation in sugar maple root respiration with root diameter and soil depth. Tree Physiology 18: 665670.
  • Reich PB, Walters MB, Tjoelker MG, Vanderklein D, Buschena C. 1998. Photosynthesis and respiration rates depend on leaf and root morphology and nitrogen concentration in nine boreal tree species differing in relative growth rate. Functional Ecology 12: 395405.
  • Rinnan R, Keinänen MM, Kasurinen A, Asikainen J, Kekki TK, Holopainen T, Ro-Poulsen H, Mikkelsen TN, Michelsen A. 2005. Ambient ultraviolet radiation in the Arctic reduces root biomass and alters microbial community composition but has no effects on microbial biomass. Global Change Biology 11: 564574.
  • Rustad LE, Campbell JL, Marion GM, Norby RJ, Mitchell MJ, Hartley AE, Cornelissen JHC, Gurevitch J, GCTE-NEWS. 2001. A meta-analysis of the response of soil respiration, net nitrogen mineralization, and aboveground plant growth to experimental ecosystem warming. Oecologia 126: 543562.
  • SAS Institute. 2002. Users guide: statistics, version 8.02 edition. Cary, NC, USA: SAS Institute.
  • Schimel JP, Weintraub MN. 2003. The implications of exoenzyme activity on microbial carbon and nitrogen limitation in soil: a theoretical model. Soil Biology and Biochemistry 35: 549563.
  • SMHI. 2006. Klimat I Förändring – en Jämförelse av Temperatur och Nederbörd 1991–2005 Med 1961–90. Faktablad Nr 29. Direkt offset AB, Norrköping, Sweden: Swedish Meteorological and Hydrological Institute (in Swedish).
  • Smith MS, Tiedje JM. 1979. Phases of denitrification following oxygen depletion in soil. Soil Biology and Biochemistry 1: 261267.
  • Soil Survey Staff. 1994. Keys to soil taxonomy, 6th edn. Washington, DC, USA: US Department of Agriculture, Soil Conservation Service.
  • Sokal RR, Rohlf FJ. 1994. Biometry. New York, NY, USA: W. H. Freeman.
  • Sullivan PF, Welker JM. 2005. Warming chambers stimulate early season growth of an arctic sedge: results of a minirhizotron field study. Oecologia 142: 616626.
  • Tiedje JM. 1994. Denitrifiers. In: WeaverRW, AngleJS, BottomleyPS, eds. Methods of soil analysis, Part Two: Microbiological and biochemical properties. Madison, WI, USA: Soil Science Society of America, 245267.
  • Walker MD, Wahren CH, Hollister RD, Henry GHR, Ahlquist LE, Alatalo JM, Bret-Harte MS, Calef MP, Callaghan TV, Carroll AB et al . 2006. Plant community responses to experimental warming across the tundra biome. Proceedings of the National Academy of Sciences, USA 103: 13421346.
  • Welker JM, Fahnestock JT, Henry GHR, O'dea KW, Chimner RA. 2004. CO2 exchange in three Canadian High Arctic ecosystems: response to long-term experimental warming. Global Change Biology 10: 19811995.
  • Welker JM, Fahnestock JT, Jones MH. 2000. Annual CO2 flux in dry and moist arctic tundra: field responses to increases in summer temperatures and winter snow depth. Climatic Change 44: 139150.
  • Welker JM, Molau U, Parsons AN, Robinson CH, Wookey PA. 1997. Response of Dryas octopetala to ITEX manipulations: a synthesis with circumpolar comparisons. Global Change Biology 3: 6173.
  • Wells CE, Eissenstat DM. 2001. Marked differences in survivorship among apple roots of different diameters. Ecology 82: 882892.
  • Van Wijk MT, Williams M, Gough L, Hobbie SE, Shaver GR. 2003. Luxury consumption of soil nutrients: a possible competitive strategy in above-ground and below-ground biomass allocation and root morphology for slow-growing arctic vegetation? Journal of Ecology 91: 664676.
  • Zak DR, Groffman PM, Pregitzer KS, Christensen S, Tiedje JM. 1990. The vernal dam plant–microbe competition for nitrogen in northern Michigan USA hardwood forests. Ecology 71: 651656.
  • Zak DR, Pregitzer KS, King JS, Holmes WE. 2000. Elevated atmospheric CO2, fine roots and the response of soil microorganisms: a review and hypothesis. New Phytologist 47: 201222.