Mass Foliar Damage at Subalpine-Timberline Ecotone in Western Himalaya Due to Extreme Climatic Events


Glimpses of unusual climatic conditions such as high summer temperature, heavy rainfall as well as snowfall and low winter temperature were noticed during 2010-2011 in subalpine-timberline (2700 - 3600 m) zones of Western Himalaya. Abundant winter injury to the current year (2010) foliage and shoot of Rhododendron arboretum and Quercus semecarpifolia became apparent in winters of 2010-2011. The foliar and bud mortality both increased with elevation beyond 2800 m and maximum along the edges of forest. Rhododendron campanulatum was another species which also got affected throughout the Western Himalaya. Such events were not reported earlier from the region and current observations indicate the high sensitivity of the plant species to the extreme inter-annual climatic variations.

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I. Rai, B. Adhikari and G. Rawat, "Mass Foliar Damage at Subalpine-Timberline Ecotone in Western Himalaya Due to Extreme Climatic Events," American Journal of Climate Change, Vol. 1 No. 2, 2012, pp. 104-107. doi: 10.4236/ajcc.2012.12008.

Conflicts of Interest

The authors declare no conflicts of interest.


[1] M. Beniston, H. F. Diaz and R. S. Bradley, “Climate Change at High Elevation Sites,” Climate Change, Vol. 36, No. 3-4, 1997, pp. 233-251.
[2] J. A. Patz, D. Campbell-Lendrum, T. Holloway and J. A. Foley, “Impact of Regional Climate Change on Human Health,” Nature, Vol. 438, No. 7066, 2005, pp. 310-317. doi:10.1038/nature04188
[3] P. Forst, J. Caban and P. Michahk, “Protection of Forests and Environment,” Statnizemidilskenakladatelstvi, Praha, 1985.
[4] P. Wardle and M. C. Coleman, “Evidence for Rising Upper Limits of 4 Native New Zealand Forest Trees,” New Zealand Journal of Botany, Vol. 30, No. 3, 1992, pp. 303314. doi:10.1080/0028825X.1992.10412909
[5] L. Kullman, “20th Century Climate Warming and Tree Limit Rise in the Southern Scandes of Sweden,” Ambio, Vol. 30, No. 2, 2001, pp. 72-80.
[6] D. R. Cayan, S. A. Kammerdiener, M. D. Dettinger, J. M. Caprio and D. H. Peterson, “Changes in the Onset of Spring in the Western United States,” Bulletin of the American Meteorological Society, Vol. 82, No. 3, 2001, pp. 399-415. doi:10.1175/1520-0477(2001)082<0399:CITOOS>2.3.CO;2
[7] R. Ahas, A. Aasa, A. Menzel, V. G. Fedotova and H. Scheifinger, “Changes in European Spring Phenology,” International Journal of Climatology, Vol. 22, No. 14, 2002, pp. 1727-1738. doi:10.1002/joc.818
[8] T. H. Sparks, B. Jaroszewicz, K. M. Marta and P. Tryjanowski, “Advancing Phenology in Europe’s Last Lowland Primeval Forest: Non-Linear Temperature Response,” Climate Research, Vol. 39, No. 3, 2009, pp. 221-226. doi:10.3354/cr00812
[9] A. Menzel and P. Fabian, “Growing Season Extended in Europe,” Nature, Vol. 397, No. 6721, 1999, p. 659. doi:10.1038/17709
[10] B. E. Lazarus, P. G. Schaberg, D. H. DeHayes and G. J. Hawley, “Severe Red Spruce Winter Injury in 2003 Creates Unusual Ecological Event in the Northeastern United States,” Canadian Journal of Forestry Research, Vol. 34, No. 8, 2004, pp. 1784-1788.
[11] S. K. Uniyal and A. Uniyal, “Climate Change and LargeScale Degradation of Spruce: Common Pattern across the Globe,” Climate Research, Vol. 38, No. 3, 2009, pp. 261263. doi:10.3354/cr00792
[12] B. S. Adhikari, G. S. Rawat, I. D. Rai, S. Bhattacharyya and R. R. Bharti,” Ecological Assessment of Timberline Ecotone in Western Himalaya with Special Reference to Climate Change and Anthropogenic Pressures,” IV Annual Report, Wildlife Institute of India, Dehradun, 2011.
[13] W. Tranquillini, “Physiological Ecology of the Alpine Timberlines,” Springer-Verlag, Berlin, 1979. doi:10.1007/978-3-642-67107-4
[14] R. W. Katz and B. G. Brown, “Extreme Events in a Changing Climate: Variability Is More Important than Averages,” Climate Change, Vol. 21, No. 3, 1992, pp. 289-302.
[15] J. L. Innes, “The Impacts of Climatic Extremes on Forests: An Introduction,” In: M. Beniston and J. L. Innes, Eds., The Impacts of Climatic Variability on Forests, SpringerBerlag, Berlin, 1998, pp. 1-18.
[16] J. L. Hadley and W. K. Smith, “Wind Effect on Needles of Timberline Conifers: Seasonal Influence on Mortality,” Ecology, Vol. 67, No. 1, 1986, pp. 12-19.
[17] A. Sakai and W. Larcher, “Frost Survival of Plants: Responses and Adaptation to Freezing Stress,” SpringerVerlag, Berlin, 1987.
[18] B. S. Adhikari, Y. S. Rawat and S. P. Singh, “Structure and Function of High Altitude Forests of Central Himalaya II. Nutrient Dynamics,” Annals of Botany, Vol. 75, No. 3, 1995, pp. 249-258. doi:10.1006/anbo.1995.1018
[19] IPCC, “Climate Change 2007: The Physical Science Basis,” Cambridge University Press, Cambridge, 2007.

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