Range Expansion of Thermophilic Aspen (Populus tremula L.) in the Swedish Subarctic

References Cited

• ACIA 2005. Arctic Climate Impact Assessment. Cambridge, U.K Cambridge University Press. 1042 pp.
   Google Scholar
• Alexandersson, H. , C. Karlström , and S. Larsson-McCann . 1991. Temperature and precipitation in Sweden, 1961–90. Reference normals. SMHI Reports, Meteorology and Climatology 81:1–87.
   Google Scholar
• Barnekow, L. 1999. Holocene tree-line dynamics and inferred climatic changes in the Abisko area, northern Sweden, based on macrofossil and pollen records. The Holocene 9:253–265.
   Web of Science ®Google Scholar
• Berglund, B. E. , L. Barnekow , D. Hammarlund , P. Sandgren , and I. F. Snowball . 1996. Holocene forest dynamics and climate changes in the Abisko area, northern Sweden—The Sonesson model of vegetation history reconsidered and confirmed. Ecological Bulletins 45:15–30.
   Google Scholar
• Bigler, C. , I. Larocque , S. M. Peglar , H. J. B. Birks , and R. I. Hall . 2002. Quantitative multiproxy assessment of long-term patterns of Holocene environmental change from a small lake near Abisko, northern Sweden. The Holocene 12:481–496.
   Web of Science ®Google Scholar
• Børset, O. 1960. Silviculture of aspen. Scottish Forestry 14:68–80.
   Google Scholar
• Butler, D. R. , G. P. Malanson , and D. M. Cairns . 1994. Stability of alpine treeline in Glacier National Park, Montana, U.S.A. Phytocoenologia 22:485–500.
   Google Scholar
• Cairns, D. , C. Lafon , J. Moen , and A. Young . 2007. Influences of animal activity on treeline position and pattern: implications for treeline responses to climate change. Physical Geography 28:419–433.
   Web of Science ®Google Scholar
• Callaghan, T. V. , R. M. M. Crawford , M. Eronen , A. Hofgaard , S. Payette , W. G. Rees , O. Skre , J. Sveinbjornsson , T. K. Vlassova , and B. R. Werkman . 2002. The dynamics of the tundra-taiga boundary: an overview and suggested coordinated and integrated approach to research. Ambio 12:3–5.
   Google Scholar
• Callaghan, T. V. , L. O. Bjorn , F. I. Chapin , Y. Chernov , T. Christensen , B. Huntley , R. Ims , et al . 2005. Chapter 7: Arctic tundra and polar desert ecosystems. In Berner, J. , C. Symon , L. Arris , and O. W. Heal . (eds.). ACIA: Arctic Climate Impact Assessment. Cambridge Cambridge University Press. 243–352.
   Google Scholar
• Callaghan, T. V. , F. Bergholm , T. R. Christensen , C. Jonasson , U. Kokfelt , and M. Johansson . in press. A new climate era in the sub-Arctic: Accelerating climate changes and multiple impacts. Geophysical Research Letters.
   Google Scholar
• Camarero, J. and E. Gutiérrez . 2007. Response of Pinus uncinata recruitment to climate warming and changes in grazing pressure in an isolated population of the Iberian System (NE Spain). Arctic, Antarctic, and Alpine Research 39:210–217.
   Web of Science ®Google Scholar
• Carlsson, BÅ , P. S. Karlsson , and B. M. Svensson . 1999. Alpine and subalpine vegetation. In Sjögren, E. (ed.). Swedish Plant Geography. Uppsala Acta Phytogeographica Suecica. 84:75–89.
   Google Scholar
• Chapin, F. S. I. , T. V. Callaghan , Y. Bergeron , M. Fukuda , J. F. Johnstone , G. Juday , and S. A. Zimov . 2004. Global change and the boreal forest: thresholds, shifting states or gradual change? Ambio 33:361–365.
   Web of Science ®Google Scholar
• Chapin, F. S. I. , M. Berman , T. V. Callaghan , P. Convey , A-S. Crepin , K. Danell , H. Ducklow , B. Forbes , G. Kofinas , A. D. McGuire , M. Nuttall , R. Virginia , O. Young , and S. Zimov . 2005. Polar systems. In Hassan, H. , R. Scholes , and N. Ash . (eds.). Millennium Ecosystem Assessment: Ecosystems and Human Well-being: Current State and Trends. Washington Island Press. 717–743.
   Google Scholar
• Dalen, L. and A. Hofgaard . 2005. Differential regional treeline dynamics in the Scandes Mountains. Arctic, Antarctic, and Alpine Research 37:284–296.
   Web of Science ®Google Scholar
• Danby, R. and D. Hik . 2007. Evidence of recent treeline dynamics in southwest Yukon from aerial photographs. Arctic 60:411–420.
   Web of Science ®Google Scholar
• Davis, M. B. 1986. Climatic instability, time lags, and community disequilibrium. In Diamond, J. and T. J. Case . (eds.). Community Ecology. New York Harper and Row. 269–284.
   Google Scholar
• Davis, M. B. 1987. Invasions of forest communities during the Holocene: beech and hemlock in the Great Lakes region. In Gray, A. J. , M. J. Crawley , and P. J. Edwards . (eds.). Colonization, Succession and Stability. Oxford Blackwell Scientific Publications. 373–393.
   Google Scholar
• Eckstein, D. , J. Hoogesteger , and R. L. Holmes . 1991. Insect-related differences in growth of birch and pine at northern treeline in Swedish Lapland. Holarctic Ecology 14:18–23.
   Web of Science ®Google Scholar
• Elliott, G. P. and W. L. Baker . 2004. Quaking aspen ( Populus tremuloides Michx. ) at treeline: a century of change in the San Juan Mountains, Colorado, USA. Journal of Biogeography 31:733–745.
   Web of Science ®Google Scholar
• ESRI Inc. 2005. ArcGIS 9.0. Redlands, California.
   Google Scholar
• Fries, T. C. E. 1913. Botanische Untersuchungen im nördlichsten Schweden (Botanical studies in northernmost Sweden) PhD thesis. Uppsala University, Uppsala: Flora och Fauna. 361 pp.
   Google Scholar
• Fries, T. C. E. 1925. The vertical distribution of some plants on Nuolja (Torne Lappmark). Botaniska Notiser 126:207–238.
   Google Scholar
• Fritts, H. C. 1976. Tree Rings and Climate. New York Academic Press. 576 pp.
   Google Scholar
• Green, R. F. and D. L. Noakes . 1995. Is a little bit of sex as good as a lot? Journal of Theoretical Biology 174:87–96.
   Web of Science ®Google Scholar
• Grime, J. P. , J. D. Fridley , A. P. Askew , K. Thompson , J. G. Hodgson , and C. R. Bennett . 2008. Long-term resistance to simulated climate change in an infertile grassland. Proceedings of the National Academy of Sciences 105:10028–10032.
   PubMed Web of Science ®Google Scholar
• Grudd, H. , K. R. Briffa , W. Karlen , T. S. Bartholin , P. D. Jones , and B. Kromer . 2002. A 7400-year tree-ring chronology in northern Swedish Lapland: natural climatic variability expressed on annual to millennial timescales. The Holocene 12:657–665.
   Web of Science ®Google Scholar
• Hagen, S. B. , J. U. Jepsen , R. A. Ims , and N. G. Yoccoz . 2007. Shifting altitudinal distribution of outbreak zones of winter moth Operophtera brumata in sub-arctic birch forest: a response to recent climate warming? Ecography 30:299–307.
   Web of Science ®Google Scholar
• Hammarlund, D. , L. Barnekow , H. J. B. Birks , B. Buchardt , and T. W. D. Edwards . 2002. Holocene changes in atmospheric circulation recorded in the oxygen-isotope stratigraphy of lacustrine carbonates from northern Sweden. The Holocene 12:339–351.
   Web of Science ®Google Scholar
• Hedenås, H. and L. Ericson . 2008. Species occurrences at stand level cannot be understood without considering the landscape context: cyanolichens on aspen in boreal Sweden. Biological Conservation 141:710–718.
   Web of Science ®Google Scholar
• Heinrichs, M. L. , S. M. Peglar , C. Bigler , and H. J. B. Birks . 2005. A multi-proxy palaeoecological study of Alanen Laanijärvi, a boreal-forest lake in Swedish Lapland. Boreas 34:192–206.
   Web of Science ®Google Scholar
• Hofgaard, A. 1997. Inter-relationships between treeline position, species diversity, land use and climate change in the central Scandes Mountains of Norway. Global Ecology and Biogeography Letters 6:419–429.
   Web of Science ®Google Scholar
• Holmgren, B. and M. Tjus . 1996. Summer air temperatures and tree-line dynamics at Abisko. Ecological Bulletins 45:159–169.
   Google Scholar
• Holtmeier, F. , G. Broll , A. Müterthies , and K. Anschlag . 2003. Regeneration in the treeline ecotone: northern Finnish Lapland. Fennia 181:103–128.
   Google Scholar
• Holtmeier, F. K. and G. Broll . 2005. Sensitivity and response of northern hemisphere altitudinal and polar treelines to environmental change at landscape and local scales. Global Ecology and Biogeography 14:395–410.
   Web of Science ®Google Scholar
• Høye, T. T. , E. Post , H. Meltofte , N. M. Schmidt , and M. C. Forchhammer . 2007. Rapid advancement of spring in the High Arctic. Current Biology 17:R449–R451.
   Web of Science ®Google Scholar
• Ims, R. , N. Yoccoz , K. Bråthen , P. Fauchald , T. Tveraa , and V. Hausner . 2007. Can reindeer overabundance cause a trophic cascade? Ecosystems 10:607–622.
   Web of Science ®Google Scholar
• Jepsen, J. U. , S. B. Hagen , R. A. Ims , and N. G. Yoccoz . 2008. Climate change and outbreaks of the geometrids Operophtera brumata and Epirrita autumnata in subarctic birch forest: evidence of a recent outbreak range expansion. Journal of Animal Ecology 77:257–264.
   PubMed Web of Science ®Google Scholar
• Jobling, J. 1990. Poplars for Wood Production and Amenity. London HMSO. 75 pp.
   Google Scholar
• Johansson, T. 2002. Increment and biomass in 26- to 91-year-old European aspen and some practical implications. Biomass and Bioenergy 23:245–255.
   Web of Science ®Google Scholar
• Karlsson, P. S. , O. Tenow , H. Bylund , J. Hoogesteger , and M. Weih . 2004. Determinants of mountain birch growth in situ: effects of temperature and herbivory. Ecography 27:659–667.
   Web of Science ®Google Scholar
• Kay, C. 1993. Aspen seedlings in recently burned areas of Grand Teton and Yellowstone National Parks. Northwest Science 67:94–104.
   Web of Science ®Google Scholar
• Kharuk, V. I. , K. J. Ranson , S. T. Im , and M. M. Naurzbaev . 2006. Forest-tundra larch forests and climatic trends. Russian Journal of Ecology 37:291–298.
   Web of Science ®Google Scholar
• Kulakowski, D. , T. T. Veblen , and S. Drinkwater . 2004. The persistence of quaking aspen ( Populus tremuloides ) in the Grand Mesa area Colorado. Ecological Applications 14:1603–1614.
   Web of Science ®Google Scholar
• Kullman, L. 1983. Past and present tree-lines of different species in the Handölan Valley, central Sweden. Nordicana 47:25–45.
   Google Scholar
• Kullman, L. 2002. Rapid recent range-margin rise of tree and shrub species in the Swedish Scandes. Journal of Ecology 90:68–77.
   Web of Science ®Google Scholar
• Kullman, L. and L. Kjällgren . 2006. Holocene pine tree-line evolution in the Swedish Scandes: Recent tree-line rise and climate change in a long-term perspective. Boreas 35:159–168.
   Web of Science ®Google Scholar
• Kullman, L. and L. Öberg . 2009. Post–Little Ice Age tree line rise and climate warming in the Swedish Scandes: a landscape ecological perspective. Journal of Ecology 97:415–429.
   Web of Science ®Google Scholar
• Latva-Karjanmaa, T. M. , L. I. Suvanto , K. Leinonen , and H. Rita . 2003. Emergence and survival of Populus tremula seedlings under varying moisture conditions. Canadian Journal of Forest Research 33:2081–2088.
   Web of Science ®Google Scholar
• Lloyd, A. H. and C. L. Fastie . 2002. Spatial and temporal variability in the growth and climate response of treeline trees in Alaska. Climatic Change 52:481–509.
   Web of Science ®Google Scholar
• Lloyd, A. H. and C. L. Fastie . 2003. Recent changes in treeline forest distribution and structure in interior Alaska. Ecoscience 10:176–185.
   Web of Science ®Google Scholar
• Manier, D. J. and R. D. Laven . 2002. Changes in landscape patterns associated with the persistence of aspen ( Populus tremuloides Michx.) on the western slope of the Rocky Mountains, Colorado. Forest Ecology and Management 167:263–284.
   Web of Science ®Google Scholar
• Masek, J. G. 2001. Stability of boreal forest stands during recent climate change: evidence from Landsat satellite imagery. Journal of Biogeography 28:967–976.
   Web of Science ®Google Scholar
• McDonough, W. T. 1985. Sexual reproduction, seeds and seedlings. In DeByle, N. V. and R. P. Winokur . (eds.). Aspen: Ecology and Management in the Western United States. Fort Collins, Colorado USDA Forest Service Technical Report. 119:25–28.
   Google Scholar
• Myneni, R. B. , C. D. Keeling , C. J. Tucker , G. Asrar , and R. R. Nemani . 1997. Increased plant growth in the northern high latitudes from 1981 to 1991. Nature 386:698–702.
   Web of Science ®Google Scholar
• Neuvonen, S. , H. Bylund , and H. Tømmervik . 2005. Forest defoliation risks in birch forest by insects under different climate and land use scenarios in northern Europe. In Wielgolaski, F. (ed.). Plant Ecology, Herbivory, and Human Impact in Nordic Mountain Birch Forests. New York Springer. 125–138.
   Google Scholar
• Nilssen, A. and O. Tenow . 1990. Diapause, embryo growth and supercooling capacity of Epirrita autumnata eggs from northern Fennoscandia. Entomologia Experimentalis et Applicata 57:39–55.
   Web of Science ®Google Scholar
• Östlund, L. , O. Zackrisson , and A-L. Axelsson . 1997. The history and transformation of a Scandinavian boreal forest landscape since the 19th century. Canadian Journal of Forestry Research 27:1198–1206.
   Web of Science ®Google Scholar
• Payette, S. 2007. Contrasted dynamics of northern Labrador tree lines caused by climate change and migrational lag. Ecology 88:770–780.
   PubMed Web of Science ®Google Scholar
• Peros, M. C. , K. Gajewski , and A. E. Viau . 2008. Continental-scale tree population response to rapid climate change, competition and disturbance. Global Ecology and Biogeography 17:658–669.
   Web of Science ®Google Scholar
• Persson, E. 1952. Träd-och skoggränsstudier på nordsidan av Torneträsk (Tree- and forestline studies on the northern side of Lake Torneträsk). M.Sc. thesis. Lund University. 24 pp.
   Google Scholar
• Post, E. , M. C. Forchhammer , M. S. Bret-Harte , T. V. Callaghan , T. R. Christensen , B. Elberling , A. D. Fox , O. Gilg , D. S. Hik , T. T. Hoye , R. A. Ims , E. Jeppesen , D. R. Klein , J. Madsen , A. D. McGuire , S. Rysgaard , D. E. Schindler , I. Stirling , M. P. Tamstorf , N. J. C. Tyler , R. van der Wal , J. Welker , P. A. Wookey , N. M. Schmidt , and P. Aastrup . 2009. Ecological dynamics across the Arctic associated with recent climate change. Science 325:1355–1358.
   PubMed Web of Science ®Google Scholar
• Räisänen, J. and H. Alexandersson . 2003. A probabilistic view on recent and near future climate change in Sweden. Tellus 55:113–125.
   Google Scholar
• Rickebusch, S. , H. Lischke , H. Bugmann , A. Guisan , and N. E. Zimmermann . 2007. Understanding the low-temperature limitations to forest growth through calibration of a forest dynamics model with tree-ring data. Forest Ecology and Management 246:251–263.
   Web of Science ®Google Scholar
• Romme, W. H. , M. G. Turner , R. H. Gardner , W. W. Hargrove , G. A. Tuskan , D. G. Despain , and R. A. Renkin . 1997. A rare episode of sexual reproduction in aspen ( Populus tremuloides Michx.) following the 1988 Yellowstone fires. Natural Areas Journal 17:17–25.
   Web of Science ®Google Scholar
• Saelthun, N. R. and L. J. Barkved . 2003. Climate Change Scenarios for the SCANNET Region Norwegian Institute for Water Research (NIVA) Rep. SNO 4663.
   Google Scholar
• Schier, G. A. , J. R. Jones , and R. P. Winokur . 1985. Vegetative regeneration. In DeByle, N. V. and R. P. Winokur . (eds.). Aspen: Ecology and Management in the Western United States. Fort Collins, Colorado USDA Forest Service Technical Report. 119:29–33.
   Google Scholar
• Schmölcke, U. and F. E. Zachos . 2005. Holocene distribution and extinction of the moose ( Alces alces , Cervidae) in Central Europe. Mammalian Biology 70:329–344.
   Web of Science ®Google Scholar
• Schweingruber, F. , D. Eckstein , F. Serre-Bachet , and O. Braker . 1990. Identification, presentation and interpretation of event years and pointer years in dendrochronology. Dendrochronologia 8:9–38.
   Google Scholar
• Seppä, H. 1998. Postglacial trends in palynological richness in the northern Fennoscandian tree-line area and their ecological interpretation. The Holocene 8:43–53.
   Web of Science ®Google Scholar
• Seppä, H. and H. J. B. Birks . 2001. July mean temperature and annual precipitation trends during the Holocene in the Fennoscandian tree-line area: pollen-based climate reconstructions. The Holocene 11:527–539.
   Web of Science ®Google Scholar
• Shiyatov, S. , M. Terent'ev , V. Fomin , and N. Zimmermann . 2007. Altitudinal and horizontal shifts of the upper boundaries of open and closed forests in the Polar Urals in the 20th century. Russian Journal of Ecology 38:223–227.
   Web of Science ®Google Scholar
• Sitch, S. , C. Huntingford , N. Gedney , P. E. Levy , M. Lomas , S. L. Piao , R. Betts , P. Ciais , P. Cox , P. Friedlingstein , C. D. Jones , I. C. Prentice , and F. I. Woodward . 2008. Evaluation of the terrestrial carbon cycle, future plant geography and climate-carbon cycle feedbacks using five Dynamic Global Vegetation Models (DGVMs). Global Change Biology 14:2015–2039.
   Web of Science ®Google Scholar
• Skre, O. 2001. Climate change impacts on mountain birch ecosystems. In Wielgolaski, F. E. (ed.). Nordic Mountain Birch Ecosystems. Paris UNESCO and Carnforth: Parthenon. 343–357.
   Google Scholar
• Sonesson, M. 1970. Studies on mire vegetation in the Torneträsk area, northern Sweden. III. Communities of the poor mires. Opera Botanica 26:1–122.
   Google Scholar
• Sonesson, M. and J. Hoogesteger . 1983. Recent tree-line dynamics ( Betula pubescens Ehrh. ssp. tortuosa (Ledeb.) Nyman) in northern Sweden. Nordicana 47:47–54.
   Google Scholar
• SPSS Inc. 2006. SPSS version 15.0. Chicago, Illinois, SPSS Inc.
   Google Scholar
• Suvanto, L. I. and T. B. Latva-Karjanmaa . 2005. Clone identification and clonal structure of the European aspen ( Populus tremula ). Molecular Ecology 14:2851–2860.
   PubMed Web of Science ®Google Scholar
• Sylvén, N. 1904. Studier över vegetationen i Torne lappmarks björkregion (Vegetation studies in Torne Lapland's birch woodland area). Arkiv för Botanik 3:1–28.
   Google Scholar
• Sylvén, S. 2003. Management and regulated harvest of moose ( Alces alces ) in Sweden. PhD thesis. Uppsala University:. 36 pp.
   Google Scholar
• Tape, K. , M. Sturm , and C. Racine . 2006. The evidence for shrub expansion in northern Alaska and the Pan-Arctic. Global Change Biology 12:686–702.
   Web of Science ®Google Scholar
• Tenow, O. , H. Bylund , A. C. Nilssen , and P. S. Karlsson . 2005. Long-term influence of herbivores on northern birch forests. In Wielgolaski, F. E. (ed.). Plant Ecology, Herbivory, and Human Impact in Nordic Mountain Birch Forests. Berlin Springer-Verlag. 166–181.
   Google Scholar
• Tømmervik, H. , B. Johansen , I. Tombre , D. Thannheiser , K. Høgda , E. Gaare , and F. Wielgolaski . 2004. Vegetation changes in the Nordic mountain birch forest: the influence of grazing and climate change. Arctic, Antarctic, and Alpine Research 36:323–332.
   Web of Science ®Google Scholar
• Van Bogaert, R. , D. Walker , G. J. Jia , O. Grau , M. Hallinger , M. De Dapper , C. Jonasson , and T. V. Callaghan . 2007. Recent changes in vegetation. In Richter-Menge, J. (ed.). Arctic Report Card 2007. Washington NOAA. 33–40.
   Google Scholar
• Van Bogaert, R. , C. Jonasson , M. De Dapper , and T. V. Callaghan . 2009. Competitive interaction between aspen and birch moderated by invertebrate and vertebrate herbivores and climate warming. Plant Ecology & Diversity 2:221–232.
   Web of Science ®Google Scholar
• Von Holle, B. , H. R. Delcourt , D. Simberloff , and P. Harcombe . 2003. The importance of biological inertia in plant community resistance to invasion. Journal of Vegetation Science 14:425–432.
   Web of Science ®Google Scholar
• Wielgolaski, F. E. 2005. History and environment of the Nordic mountain birch. In Wielgolaski, F. E. (ed.). Plant Ecology, Herbivory, and Human Impact in Nordic Mountain Birch Forests. New York Springer. 3–18.
   Google Scholar
• Wolf, A. , M. Kozlov , and T. Callaghan . 2008. Impact of non-outbreak insect damage on vegetation in northern Europe will be greater than expected during a changing climate. Climatic Change 87:91–106.
   Web of Science ®Google Scholar
• Worrell, R. 1995. European aspen ( Populus tremula L.): a review with particular reference to Scotland I. Distribution, ecology and genetic variation. Forestry 68:93–105.
   Web of Science ®Google Scholar
• Worrell, R. , A. G. Gordon , R. S. Lee , and A. McInroy . 1999. Flowering and seed production of aspen in Scotland during a heavy seed year. Forestry 72:27–34.
   Web of Science ®Google Scholar
• Wright, S. 1984. Evolution and the Genetics of Populations. Chicago University of Chicago Press. 590 pp.
   Google Scholar
• Zhou, L. , C. J. Tucker , R. K. Kaufmann , D. Slayback , N. V. Shabanov , I. Fung , and R. B. Myneni . 2001. Variations in northern vegetation activity inferred from satellite data of vegetation index during 1981 to 1999. Journal of Geophysical Research 106:20069–20083.
   Web of Science ®Google Scholar