Abstract
Snow is an important environmental factor in alpine ecosystems, which influences plant phenology, growth and species composition in various ways. With current climate warming, the snow-to-rain ratio is decreasing, and the timing of snowmelt advancing. In a 2-year field experiment above treeline in the Swiss Alps, we investigated how a substantial decrease in snow depth and an earlier snowmelt affect plant phenology, growth, and reproduction of the four most abundant dwarf-shrub species in an alpine tundra community. By advancing the timing when plants started their growing season and thus lost their winter frost hardiness, earlier snowmelt also changed the number of low-temperature events they experienced while frost sensitive. This seemed to outweigh the positive effects of a longer growing season and hence, aboveground growth was reduced after advanced snowmelt in three of the four species studied. Only Loiseleuria procumbens, a specialist of wind exposed sites with little snow, benefited from an advanced snowmelt. We conclude that changes in the snow cover can have a wide range of species-specific effects on alpine tundra plants. Thus, changes in winter climate and snow cover characteristics should be taken into account when predicting climate change effects on alpine ecosystems.
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References
Bilbrough CJ, Welker JM, Bowman WD (2000) Early spring nitrogen uptake by snow-covered plants: a comparison of arctic and alpine plant function under the snowpack. Arct Antarct Alp Res 32:404–411
Campbell JL, Mitchell MJ, Groffman PM et al (2005) Winter in northeastern North America: an often overlooked but critical period for ecological processes. Front Ecol Environ 3:314–322
Evans BM, Walker DA, Benson CS et al (1989) Spatial interrelationships between terrain, snow distribution and vegetation patterns at an arctic foothills site in Alaska. Holarct Ecol 12:270–278
Fitzhugh RD, Driscoll CT, Groffman PM et al (2001) Effects of soil freezing disturbance on soil solution nitrogen, phosphorus, and carbon chemistry in a northern hardwood ecosystem. Biogeochemistry 56:215–238
Galen C, Stanton ML (1993) Short-term responses of alpine buttercups to experimental manipulations of growing-season length. Ecology 74:1052–1058
Galen C, Stanton ML (1995) Responses of snowbed plant-species to changes in growing-season length. Ecology 76:1546–1557
Grabherr G (1980) Variability and ecology of the alpine dwarf shrub community Loiseleurio–Cetrarietum. Plant Ecol 41:111–120
Groffman PM, Driscoll CT, Fahey TJ et al (2001) Effects of mild winter freezing on soil nitrogen and carbon dynamics in a northern hardwood forest. Biogeochemistry 56:191–213
Harte J, Shaw R (1995) Shifting dominance within a montane vegetation community—results of a climate-warming experiment. Science 267:876–880
Inouye DW (2000) The ecological and evolutionary significance of frost in the context of climate change. Ecol Lett 3:457–463
Inouye DW (2008) Effects of climate change on phenology, frost damage, and floral abundance of montane wildflowers. Ecology 89:353–362
Inouye DW, Wielgolaski FE (2003) High altitude climates. In: Schwartz MD (ed) Phenology: an integrative environmental science. Kluwer, Dordrecht, The Netherlands, pp 195–214
Inouye DW, Morales MA, Dodge GJ (2002) Variation in timing and abundance of flowering by Delphinium barbeyi Huth (Ranunculaceae): the roles of snowpack, frost, and La Niña, in the context of climate change. Oecologia 130:543–550
IPCC (ed) (2007) Climate change 2007: the physical science basis. Contribution of working group I to the fourth assessment report of the intergovernmental panel on climate change. Cambridge University Press, Cambridge, New York
Jones MH, Fahnestock JT, Walker DA et al (1998) Carbon dioxide fluxes in moist and dry arctic tundra during the snow-free season: responses to increases in summer temperature and winter snow accumulation. Arct Alp Res 30:373–380
Jordan DN, Smith WK (1995) Microclimate factors influencing the frequency and duration of growth season frost for sub-alpine plants. Agric For Meteorol 77:17–30
Keller F, Korner C (2003) The role of photoperiodism in alpine plant development. Arct Antarct Alp Res 35:361–368
Koerner C (1999) Alpine plant life. Springer, Berlin
Laternser M, Schneebeli M (2003) Long-term snow climate trends of the Swiss Alps (1931–99). J Climatol 23:733–750
Lopez-Moreno JI (2005) Recent variations of snowpack depth in the central Spanish Pyrenees. Arct Antarct Alp Res 37:253–260
Molau U (1997) Phenology and reproductive success in arctic plants: susceptibility to climate change. In: Oechel WC, Callaghan T, Gilmanov TG et al (eds) Global change and arctic terrestrial ecosystems. Springer, New York, pp 153–170
Molgaard P, Christensen K (1997) Response to experimental warming in a population of Papaver radicatum in Greenland. Global Change Biol 3:116–124
Mote PW, Hamlet AF, Clark MP et al (2005) Declining mountain snowpack in western North America. Bull Am Meteorol Soc 86:39–49
Oberbauer SF, Starr G, Pop EW (1998) Effects of extended growing season and soil warming on carbon dioxide and methane exchange of tussock tundra in Alaska. J Geophys Res 103:29075–29082
Odland A, Munkejord HK (2008) Plants as indicators of snow layer duration in southern Norwegian mountains. Ecological Indicators 8(1):57–68
Pomeroy JW, Brun E (2001) Physical properties of snow. In: Jones HG, Pomeroy JW, Walker DA et al (eds) Snow ecology. Cambridge University Press, Cambridge, pp 45–126
Price MV, Waser NM (1998) Effects of experimental warming on plant reproductive phenology in a subalpine meadow. Ecology 79:1261–1271
Roy BA, Gusewell S, Harte J (2004) Response of plant pathogens and herbivores to a warming experiment. Ecology 85:2570–2581
Saavedra F (2002) Testing climate change predictions with the subalpine species Delphinium nuttallianum. In: Schneider SH, Root TL (eds) Wildlife responses to climate change. Island Press, Washington, pp 201–249
Seastedt TR, Vaccaro L (2001) Plant species richness, productivity, and nitrogen and phosphorus limitations across a snowpack gradient in alpine tundra, Colorado, USA. Arct Antarct Alp Res 33:100–106
Siffi C (2007) Effetto della variazione della copertura nevosa in una brughiera soprasilvatica dell’Appennino Settentrionale. PhD Thesis, Università degli Studi di Ferrara
SPSS Inc (2001) SPSS 11.0.0. Chicago
Stinson KA (2004) Natural selection favors rapid reproductive phenology in Potentilla pulcherrima (Rosaceae) at opposite ends of a subalpine snowmelt gradient. Am J Bot 91:531–539
Sturm M, Schimel J, Michaelson G et al (2005) Winter biological processes could help convert arctic tundra to shrubland. BioScience 55:17–26
Taschler D, Neuner G (2004) Summer frost resistance and freezing patterns measured in situ in leaves of major alpine plant growth forms in relation to their upper distribution boundary. Plant Cell Environ 27:737–746
Tierney GL, Fahey TJ, Groffman PM et al (2001) Soil freezing alters fine root dynamics in a northern hardwood forest. Biogeochemistry 56:175–190
Ulmer W (1937) Ueber den Jahresgang der Frosthaerte einiger immergruener Arten der alpinen Stufe, sowie Zirbe und Fichte. Jahrbuecher fuer wissenschaftliche Botanik 84:553–592
Walker DA, Halfpenny JC, Walker MD et al (1993) Long-term studies of snow–vegetation interactions. BioScience 43:287–301
Weih M, Karlsson PS (2002) Low winter soil temperature affects summertime nutrient uptake capacity and growth rate of mountain birch seedlings in the Subarctic, Swedish Lapland. Arct Antarct Alp Res 34:434–439
Welch D, Scott D, Thompson DBA (2005) Changes in the composition of Carex bigelowii–Racomitrium lanuginosum moss heath on Glas Maol, Scotland, in response to sheep grazing and snow fencing. Biol Conserv 122:621–631
Wipf S, Rixen C, Fischer M et al (2005) Effects of ski piste preparation on alpine vegetation. J Appl Ecol 42:306–316
Wipf S, Rixen C, Mulder CPH (2006) Advanced snowmelt causes shift towards positive neighbour interactions in a subarctic tundra community. Glob Chang Biol 12:1496–1506
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Wipf, S., Stoeckli, V. & Bebi, P. Winter climate change in alpine tundra: plant responses to changes in snow depth and snowmelt timing. Climatic Change 94, 105–121 (2009). https://doi.org/10.1007/s10584-009-9546-x
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DOI: https://doi.org/10.1007/s10584-009-9546-x