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Phenology, growth, and fecundity of eight subarctic tundra species in response to snowmelt manipulations

Abstract

The snow cover extent is an important factor for the structure and composition of arctic and alpine tundra communities. Over the last few decades, snowmelt in many arctic and alpine regions has advanced, causing the growing season to start earlier and last longer. In a field experiment in subarctic tundra in Interior Alaska, I manipulated the timing of snowmelt and measured the response in mortality, phenology, growth, and reproduction of the eight dominant plant species. I then tested whether the phenological development of these species was controlled by snowmelt date or by temperature (in particular growing degree days, GDD). In order to expand our understanding of plant sensitivity to snowmelt timing, I explored whether the response patterns can be generalized with regard to the temporal niche of each species. Differences in the phenology between treatments were only found for the first stages of the phenological development (=phenophases). The earlier the temporal niche (i.e., the sooner after snowmelt a species develops) the more its phenology was sensitive to snowmelt. Later phenophases were mostly controlled by GDD, especially in late-developing species. In no species did an earlier snowmelt and a longer growing season directly enhance plant fitness or fecundity, in spite of the changes in the timing of plant development. In conclusion, the temporal niche of a species’ phenological development could be a predictor of its response to snowmelt timing. However, only the first phenophases were susceptible to changes in snowmelt, and no short-term effects on plant fitness were found.

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References

  1. ACIA (2004) Impacts of a warming Arctic: Arctic climate impact assessment. Cambridge University Press, Cambridge

  2. Aerts R, Cornelissen JHC, Dorrepaal E, van Logtestijn RSP, Callaghan TV (2004) Effects of experimentally imposed climate scenarios on flowering phenology and flower production of subarctic bog species. Global Change Biol 10:1599–1609

  3. Arft AM, Walker MD, Gurevitch J, Alatalo JM, Bret-Harte MS, Dale M, Diemer M, Gugerli F, Henry GHR, Jones MH, Hollister RD, Jonsdottir IS, Laine K, Levesque E, Marion GM, Molau U, Molgaard P, Nordenhall U, Raszhivin V, Robinson CH, Starr G, Stenstrom A, Stenstrom M, Totland O, Turner PL, Walker LJ, Webber PJ, Welker JM, Wookey PA (1999) Responses of tundra plants to experimental warming: meta-analysis of the international tundra experiment. Ecol Monogr 69:491–511

  4. Bliss LC (1971) Arctic and alpine plant life cycles. Annu Rev Ecol Syst 2:405–438

  5. Borner A, Kielland K, Walker M (2008) Effects of simulated climate change on plant phenology and nitrogen mineralization in Alaskan arctic tundra. Arct Antarct Alp Res 40:27–38

  6. Dormann CF, Woodin SJ (2002) Climate change in the Arctic: using plant functional types in a meta-analysis of field experiments. Funct Ecol 16:4–17

  7. Dunne JA, Harte J, Taylor KJ (2003) Subalpine meadow flowering phenology responses to climate change: integrating experimental and gradient methods. Ecol Monogr 73:69–86

  8. Dye DG (2002) Variability and trends in the annual snow-cover cycle in Northern Hemisphere land areas, 1972–2000. Hydrol Process 16:3065–3077

  9. Galen C, Stanton ML (1993) Short-term responses of alpine buttercups to experimental manipulations of growing-season length. Ecology 74:1052–1058

  10. Galen C, Stanton ML (1995) Responses of snowbed plant-species to changes in growing-season length. Ecology 76:1546–1557

  11. Harshberger JW (1929) Preliminary notes on American snow patches and their plants. Ecology 10:275–281

  12. Heide OM (2001) Photoperiodic control of dormancy in Sedum telephium and some other herbaceous perennial plants. Physiol Plant 113:332–337

  13. Hollister RD, Webber PJ, Bay C (2005) Plant response to temperature in Northern Alaska: implications for predicting vegetation change. Ecology 86:1562–1570

  14. Huelber K, Gottfried M, Pauli H, Reiter K, Winkler M, Grabherr G (2006) Phenological responses of snowbed species to snow removal dates in the Central Alps: implications for climate warming. Arct Antarct Alp Res 38:99–103

  15. Inouye DW (2000) The ecological and evolutionary significance of frost in the context of climate change. Ecol Lett 3:457–463

  16. Inouye DW (2008) Effects of climate change on phenology, frost damage, and floral abundance of montane wildflowers. Ecology 89:353–362

  17. 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

  18. Keller F, Körner C (2003) The role of photoperiodism in alpine plant development. Arct Antarct Alp Res 35:361–368

  19. Knight DH, Weaver SW, Starr CR, Romme WH (1979) Differential response of subalpine meadow vegetation to snow augmentation. J Range Manage 32:356–359

  20. Kudo G (1993) Relationship between flowering time and fruit-set of the entomophilous alpine shrub, Rhododendron aureum (Ericaceae), inhabiting snow patches. Am J Bot 80:1300–1304

  21. Kudo G, Suzuki S (1999) Flowering phenology of alpine plant communities along a gradient of snowmelt timing. Polar Biosci 12:100–113

  22. Kudo G, Suzuki S (2002) Relationships between flowering phenology and fruit-set of dwarf shrubs in alpine Fellfields in northern Japan: a comparison with a subarctic heathland in northern Sweden. Arct Antarct Alp Res 34:185–190

  23. Molau U (1993) Relationships between flowering phenology and life-history strategies in tundra plants. Arct Alp Res 25:391–402

  24. Molau U (1997) Phenology and reproductive success in arctic plants: susceptibility to climate change. In: Oechel WC, Callaghan T, Gilmanov TG, Holten JI, Maxwell B, Molau U, Sveinbjornsson B (eds) Global change and arctic terrestrial ecosystems. Springer, New York, pp 153–170

  25. Molau U, Nordenhall U, Eriksen B (2005) Onset of flowering and climate variability in an alpine landscape: a 10-year study from Swedish Lapland. Am J Bot 92:422–431

  26. Mote PW, Hamlet AF, Clark MP, Lettenmaier DP (2005) Declining mountain snowpack in western North America. Bull Amer Meteorol Soc 86:39–49

  27. NOAA (2002–2003) Local climatological data for Fairbanks, AK. National Climatic Data Center, Asheville

  28. R Development Core Team (2008) R: A language and environment for statistical computing. R Foundation for Statistical Computing, Vienna, Austria

  29. Rikiishi K, Hashiya E, Imai M (2004) Linear trends of the length of snow-cover season in the Northern Hemisphere as observed by the satellites in the period 1972–2000. Ann Glaciol 38:229–237

  30. Rixen C, Stoeckli V, Huovinen C, Huovinen K (2001) The phenology of four subalpine herbs in relation to snow cover characteristics. In: Proceedings of the sixth IAHS Symposium 2001. Soil-Vegetation-Atmosphere Transfer Schemes and Large Scale Hydrological Models. IAHS Publications, Maastricht, pp 359–362

  31. Roy BA, Gusewell S, Harte J (2004) Response of plant pathogens and herbivores to a warming experiment. Ecology 85:2570–2581

  32. Saavedra F (2000) Potential impact of climate change on the phenology and reproduction of Delphinium nuttallianum (Ranunculaceae). University of Maryland, Baltimore, p 185

  33. 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

  34. Scott PA, Rouse WR (1995) Impacts of increased winter snow cover on upland tundra vegetation—A case example. Clim Res 5:25–30

  35. 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

  36. Shabanov NV, Zhou LM, Knyazikhin Y, Myneni RB, Tucker CJ (2002) Analysis of interannual changes in northern vegetation activity observed in AVHRR data from 1981 to 1994. IEEE Trans Geosci Remote Sens 40:115–130

  37. Sieg B, Daniels FJA (2005) Altitudinal zonation of vegetation in continental West Greenland with special reference to snowbeds. Phytocoenologia 35:887–908

  38. Starr G, Oberbauer SF, Pop EW (2000) Effects of lengthened growing season and soil warming on the phenology and physiology of Polygonum bistorta. Global Change Biol 6:357–369

  39. 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

  40. Sturges DL (1989) Response of mountain big sagebrush to induced snow accumulation. J Appl Ecology 26:1035–1041

  41. van der Wal R, Madan N, van Lieshout S, Dormann C, Langvatn R, Albon SD (2000) Trading forage quality for quantity? Plant phenology and patch choice by Svalbard reindeer. Oecologia 123:108–115

  42. Wahren C-HA, Walker MD, Bret-Harte MS (2005) Vegetation responses in Alaskan arctic tundra after 8 years of a summer warming and winter snow manipulation experiment. Global Change Biol 11:537–552

  43. Walker DA, Halfpenny JC, Walker MD, Wessman CA (1993) Long-term studies of snow-vegetation interactions. Bioscience 43:287–301

  44. Walker MD, Ingersoll RC, Webber PJ (1995) Effects of interannual climate variation on phenology and growth of two alpine forbs. Ecology 76:1067–1083

  45. Walker MD, Walker DA, Welker JM, Arft AM, Bardsley T, Brooks PD, Fahnestock JT, Jones MH, Losleben M, Parsons AN, Seastedt TR, Turner PL (1999) Long-term experimental manipulation of winter snow regime and summer temperature in arctic and alpine tundra. Hydrol Process 13:2315–2330

  46. Walsh NE, McCabe TR, Welker JM, Parsons AN (1997) Experimental manipulations of snow-depth: effects on nutrient content of caribou forage. Global Change Biol 3:158–164

  47. Wielgolaski FE (2003) Climatic factors governing plant phenological phases along a Norwegian fjord. Int J Biometeorol 47:213–220

  48. Wipf S, Rixen C, Mulder CPH (2006) Advanced snowmelt causes shift towards positive neighbour interactions in a subarctic tundra community. Global Change Biol 12:1496–1506

  49. Wipf S, Stoeckli V, Bebi P (2009) Winter climate change in alpine tundra: plant responses to changes in snow depth and snowmelt timing. Clim Change 94:105–121

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Acknowledgements

I am grateful to C. Rixen for help throughout this study, C·P.H. Mulder for temperature data, P. Bebi, V. Stoeckli, and anonymous reviewers for helpful comments on an earlier version of the manuscript, the Swiss Academy of Natural Sciences for travel grants, and the Institute of Arctic Biology, University of Alaska, Fairbanks for allowing me to use its facilities. This study was financed by the WSL Institute for Snow and Avalanche Research SLF.

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Correspondence to Sonja Wipf.

Appendix

Appendix

See Tables 2 and 3.

Table 2 Results of the linear mixed-effects models (LMEs) analyzing the impact of snowmelt date and snowmelt treatments on the mortality, the timing of the vegetative phenology, and the growing temperature sums accumulated until the start of each phenophase (GDD growing degree day sums > 5°C), and the shoot growth of eight subarctic tundra species in Interior Alaska
Table 3 Results of the linear mixed-effects models (LMEs) analyzing the impact of snowmelt date and snowmelt treatments on the timing of the reproductive phenology, growing temperature sums accumulated until the start of the respective phenophase (GDD growing degree days sums > 5°C), and the fecundity of four subarctic tundra species in Interior Alaska

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Wipf, S. Phenology, growth, and fecundity of eight subarctic tundra species in response to snowmelt manipulations. Plant Ecol 207, 53–66 (2010). https://doi.org/10.1007/s11258-009-9653-9

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Keywords

  • Dwarf shrub heath
  • Growth
  • Phenology
  • Reproduction
  • Snow ecology
  • Winter climate change