Plant and Vegetation Dynamics on Disko Island, West Greenland: Snapshots Separated by Over 40 Years
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We report on a revisit in 2009 to sites where vegetation was recorded in 1967 and 1970 on Disko Island, West Greenland. Re-sampling of the same clones of the grass Phleum alpinum after 39 years showed complete stability in biometrics but dramatic earlier onset of various phenological stages that were not related to changes in population density. In a fell-field community, there was a net species loss, but in a herb-slope community, species losses balanced those that were gained. The type of species establishing and increasing in frequency and/or cover abundance at the fell-field site, particularly prostrate dwarf shrubs, indicates a possible start of a shift towards a heath, rather than a fell-field community. At the herb-slope site, those species that established or increased markedly in frequency and/or cover abundance indicate a change to drier conditions. This is confirmed both by the decrease in abundance of Alchemilla glomerulans and Epilobium hornemanii, and the drying of a nearby pond. The causes of these changes are unknown, although mean annual temperature has risen since 1984.
KeywordsVegetation change Arctic West Greenland Phenology Biometrics
This study formed part of the IPY project ‘Back to the Future’ (http://www.btf.utep.edu/). and the authors are grateful to our colleagues Professor Pat Webber and Dr. Craig Tweedie for collaboration in the establishment of this project. Dr. Thomas Bjoernebo Berg kindly helped with arrangements for the field visit and we would like to thank the Arctic Station for welcoming us and providing facilities. Of course the project would have been impossible without the formative studies of the others who established the IBP Tundra Biome Bi-Polar Botanical Project—Dr. S.W. Greene, Mrs. D.M. Greene and Dr. M.C. Lewis (all now deceased), and Dr. G.C.S. Clarke and B. Philipps. The project was financed by a grant from the Swedish Research Council (Vetenskapsrådet) 327-2007-833 as part of the International project ‘Retrospective and prospective vegetation change in the polar regions: Back to the Future’ Project (BTF; IPY Project number ID No 512).
- ACIA. 2005. Arctic climate impact assessment. Cambridge: Cambridge University Press.Google Scholar
- Anisimov, O.A., D.G. Vaughan, T.V. Callaghan, C. Furgal, H. Marchant, T.D. Prowse, H. Vilhjálmsson, and J.E. Walsh. 2007. Polar regions (Arctic and Antarctic). In Climate Change 2007: Impacts, adaptation and vulnerability. Contribution of Working Group II to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change, ed. M.L. Parry, O.F. Canziani, J.P. Palutikof, C.E. Hanson, and P.J. van der Linden, 655–685. Cambridge: Cambridge University Press.Google Scholar
- Arft, A.M., M.D. Walker, J. Gurevitch, J.M. Alatalo, M.S. Bret-Harte, M. Dale, M. Diemer, F. Gugerli, et al. 1999. Responses of tundra plants to experimental warming: Meta-analysis of the international tundra experiment. Ecological Monographs 69: 491–511.Google Scholar
- Bliss, L.C., O.W. Heal, and J.J. Moore. 1981. Tundra ecosystems: A comparative analysis. Cambridge, UK: Cambridge University Press.Google Scholar
- Böcher, T.W., K. Holmen, and K. Jacobsen. 1968. The flora of Greenland. Copenhagen: P. Haase & Son.Google Scholar
- Callaghan, T.V. 1972. Ecophysiological and taxonomic studies on bipolar Phleum alpinum L. PhD thesis, University of Birmingham.Google Scholar
- Callaghan, T.V., and C.E. Tweedie (eds.) 2011. Multi-decadal changes in Tundra environments and ecosystems—The International Polar Year Back to the Future Project. Ambio Special Issue 40(6).Google Scholar
- Callaghan, T.V., C.E. Tweedie, and P.J. Webber. 2011. Multi-decadal changes in Tundra environments and ecosystems: The International Polar Year Back to the Future Project (IPY-BTF). Ambio. doi: 10.1007/s13280-011-0162-4.
- Callaghan, T.V., L.O. Björn, Y. Chernov, F.S. Chapin, T.R. Christensen, B. Huntley, R. Ims, S. Jonasson, et al. 2005. Tundra and polar desert ecosystems. In ACIA Arctic climate impacts assessment, ed. C. Symon, L. Arris, and B. Heal, 243–352. Cambridge: Cambridge University Press.Google Scholar
- Callaghan, T.V., R.I.L. Smith, and D.W.H. Walton. 1976. The IBP bipolar botanical project. Philosophical Transactions of the Royal Society London Biological Sciences 274: 15–319.Google Scholar
- Campioli, M., L.E. Street, A. Michelse, G.R. Shaver, T. Maere, R. Samson, and R. Lemeur. 2009. Determination of Leaf Area Index, total foliar nitrogen, and Normalised Difference Vegetation Index for arctic ecosystems dominated by Cassiope tetragona L. Arctic, Antarctic, and Alpine Research 41 (4): 426–433.CrossRefGoogle Scholar
- Chapin III, F.S., M. Berman, T.V. Callaghan, P. Convey, A.S.E. Crepin, K. Danell, H. Ducklow, and B. Forbes. 2005. Polar ecosystems. In Ecosystems, human well-being: Current state, trends, vol. 1, ed. R. Hassan, R. Scholes, and N. Ash, 719–743. Washington: Island Press.Google Scholar
- Chapin III, F.S., R.L. Jefferies, J.F. Reynolds, G.R. Shaver, and J. Svoboda. 1992. Arctic ecosystems in a changing climate: An ecophysiological perspective. San Diego: Academic Press.Google Scholar
- Clarke, G.C.S., S.W. Greene, and D.M. Greene. 1971. Productivity of bryophytes in polar regions. Annals of Botany 35: 99–108.Google Scholar
- Daniëls, F.J.A., and J.G. de Molenaar. 2011. Flora and vegetation of Tasiilaq, Formerly Angmagssalik, Southeast Greenland—a comparison of data from between around 1900 and 2007. Ambio. doi: 10.1007/s13280-011-0171-3.
- Forbes, B., M. Fauria, and P. Zetterberg. 2009. Russian Arctic warming and greening are closely tracked by tundra shrub willows. Global Change Biology 15 (7): 1–13.Google Scholar
- Goswami, S., J.A. Gamon, and C.E. Tweedie. 2011. Surface hydrology of an arctic ecosystem: Multiscale analysis of a flooding and draining experiment using spectral reflectance. Journal of Geophysical Research 116: G00I07. doi: 10.1029/2010JG001346.
- Hansen, B.U., B. Elberling, O. Humlum, and N. Nielsen. 2006. Meteorological trends (1991–2004) at Arctic Station, Central West Greenland (69°15′N) in a 130 year perspective. Danish Journal of Geography 106 (1): 45–55.Google Scholar
- Hinzman, L.D., N.D. Bettez, W.R. Bolton, F.S. Chapin, N.B. Dyurgerov, C.L. Fastie, B. Griffith, R.D. Hollister, et al. 2005. Evidence and implications of recent climate change in northern Alaska and other arctic regions. Climatic Change 72: 251–298.Google Scholar
- Kaplan, J.O., N.H. Bigelow, I.C. Prentice, S.P. Harrison, P.J. Bartlein, T.R. Christensen, W. Cramer, N.V. Matveyeva, et al. 2003. Climate change and Arctic ecosystems: 2. Modeling, paleodata-model comparisons, and future projections. Journal of Geophysical Research 108 (D19): 8171. doi: 10.1029/2002JD002559.CrossRefGoogle Scholar
- Lewis, M.C., and T.V. Callaghan. 1970. Bipolar botanical project: Primary productivity studies on Disko Island, West Greenland. In Tundra biome working meeting on analysis of ecosystems, Kevo, Finland, ed. O.W. Heal, 34–50. London: Tundra Biome Steering Committee.Google Scholar