Abstract
Wet sedge-dominated communities (sedge meadows) were sampled in five lowland oases in the Queen Elizabeth Islands of the Canadian High Arctic to assess species-environment relationships. The sites spanned 4° of latitude, and varied in lithology and intensity of grazing by muskoxen (Ovibos moschatus). A suite of 8 vascular species were common in all meadow stands, with an additional 4–6 species found in most stands. The position of these species in dominance-diversity curves was not significantly different between grazed and ungrazed meadows however, the grazed sites appeared to follow a log-normal distribution, while the ungrazed sites were more geometric. Redundancy analysis indicated that grazing intensity is important in determining structure in arctic sedge meadows, largely through increasing the cover of bryophytes and the availability of nitrogen. Greatest species richness was found in the more southerly sites which were moderately grazed and had diversity in microtopography. Abbreviations: AF – Alexandra Fiord, PBP – Polar Bear Pass, PMB – Princess Marie Bay, TL – Truelove Lowland, SP – Sverdrup Pass Nomenclature: Porsild, A.E. & Cody, W.J. 1980. Vascular plants of continental Northwest Territories. National Museums of Canada, Ottawa.
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References
Babb, T. A. & Bliss, L. C. 1974. Effects of physical disturbance on arctic vegetation in the Queen Elizabeth Islands. J. Appl. Ecol. 11: 549–562.
Bell, K. L. & Bliss, L. C. 1980. Plant reproduction in a high arctic environment. Arc. Alp. Res. 12: 1–10.
Bergeron, J.-F. 1988. Plant communities of Sverdrup Pass (79° N), Ellesmere Island, N.W.T., Canada. M.Sc. thesis, University of Toronto, Toronto.
Bliss, L. C. (ed.). 1977. Truelove Lowland, Devon Island, Canada: a high arctic ecosystem. University of Alberta Press, Edmonton.
Bliss, L. C. & Matveyeva, N.V. 1992. Circumpolar arctic vegetation. In: Chapin, F. S., III, Jefferies, R. L., Reynolds, J. F., Shaver, G. R. & Svoboda, J. (eds), Arctic Ecosystems in a Changing Climate. Academic Press, San Diego.
Bliss, L. C. & Svoboda, J. 1984. Plant communities and plant production in the western Queen Elizabeth Islands. Holarc. Ecol. 7: 325–344.
Chapin, F. S., III. 1980. Nutrient allocation and response to defoliation in tundra plants. Arc. Alp. Res. 12: 553–563.
Chapin, D.M. & Bledsoe, C. S. 1992. Nitrogen fixation in arctic plant communities. In: Chapin, F. S., III, Jefferies, R. L., Reynolds, J. F., Shaver, G. R. & Svoboda, J. (eds), Arctic Ecosystems in a Changing Climate. Academic Press, San Diego.
Chapin, F. S., III, Shaver, G. R., Giblin, A. E., Nadelhoffer, K. J. & Laundre, J. A. 1995. Responses of arctic tundra to experimental and observed changes in climate. Ecol. 76: 694–711.
Dennis, J. G., Tieszen, L. L. & Vetter, M. A. 1978. Seasonal dynamics of above-and belowground production of vascular plants at Barrow, Alaska. In: Tieszen, L. L. (ed.), Vegetation and Production Ecology of an Alaskan Arctic Tundra. Springer-Verlag, New York.
Edlund, S. A., & Alt, B. T. 1989. Regional congruence of vegetation and summer climate patterns in the Queen Elizabeth Islands, Northwest Territories, Canada. Arctic 42: 3–23.
Freedman, B., Hill, N., Svoboda, J. & Henry, G. 1982. Seed banks and seedling occurrence in a high arctic oasis at Alexandra Fjord, Ellesmere Island, Canada. Can. J. Bot. 60: 2112–2118.
French, D. D. 1981. Multivariate comparisons of IBP Tundra Biome site characteristics. In: Bliss, L. C., Heal, O. W. & Moore, J. J. (eds), Tundra ecosystems: a comparative analysis. Cambridge University Press, Cambridge.
French, D. D. & Smith, V. R. 1985. A comparison between northern and southern hemisphere tundras and related ecosystems. Polar Biol. 5: 5–21.
Gould, A. J. 1985. Plant communities in the Lake Hazen area, Ellesmere Island, N.W.T. M.Sc. thesis, University of Toronto, Toronto.
Gray, D. R. 1987. The muskoxen of Polar Bear Pass. Fitzhenry and Whiteside, Markham, Ontario, and National Museums of Canada, Ottawa.
Grime, J. P. 1979. Plant Strategies and Vegetation Processes. Wiley, New York.
Henry, G. H. R. 1987. Ecology of sedge meadow communities of a polar desert oasis: Alexandra Fiord, Ellesmere Island, Canada. Ph.D. thesis, University of Toronto, Toronto.
Henry, G. H. R. & Svoboda, J. 1986. Dinitrogen fixation (acetylene reduction) in high arctic sedge meadow communities. Arc. & Alp. Res. 18: 181–187.
Henry, G. H. R. & Svoboda, J. 1994. Comparison of grazed and nongrazed high arctic sedge meadows. In: Svoboda, J. & Freedman, B. (eds), Ecology of a polar oasis. Alexandra Fiord, Ellesmere Island, Canada. Captus University Publications, Toronto.
Henry, G. H. R., Svoboda, J. & Freedman, B. 1986a. Survey of vegetated areas and muskox populations in central Ellesmere Island. Arctic 39: 78–81.
Henry, G. H. R., Freedman, B. & Svoboda, J. 1986b. Effects of fertilization on three tundra plant communities of a polar desert oasis. Can. J. Bot. 64: 2502–2507.
Henry, G. H. R., Svoboda, J. & Freedman, B. 1990. Standing crop and net production of ungrazed sedge meadows of a polar desert oasis. Can. J. Bot. 68: 2660–2667.
Hubert, B. A.1977. Estimated productivity of muskox on Truelove Lowland. In: Bliss, L. C. (ed), Truelove Lowland, Devon Island, Canada: a high arctic ecosystem. University of Alberta Press, Edmonton.
Krupicka, J. 1977. Bedrock geology of the Truelove River area. In: Bliss, L. C. (ed), Truelove Lowland, Devon Island, Canada: a high arctic ecosystem. University of Alberta Press, Edmonton.
Labine, C. 1994. Meteorology and climatology of the lowland: Alexandra Fiord. In: Svoboda, J. & Freedman, B. (eds), Ecology of a polar desert oasis. Alexandra Fiord, Ellesmere Island, Canada. Captus University Publications, Toronto (in press).
Magurran, A. E. 1988. Ecological Diversity and Its Measurement. Princeton University Press, Princeton, N.J.
Muc, M. 1976. Ecology and primary production of high arctic sedgemoss meadows, Devon Island, N.W.T., Canada. Ph.D. thesis, University of Alberta, Edmonton.
Muc, M. 1977. Ecology and primary production of sedge moss communities, Truelove Lowland. In: Bliss, L. C. (ed), Truelove Lowland, Devon Island, Canada: A High Arctic Ecosystem. University of Alberta Press, Edmonton.
Muc, M., Freedman, B. & Svoboda, J. 1989. Vascular plant communities of a polar oasis at Alexandra Fiord (79° N), Ellesmere Island. Can. J. Bot. 67: 1126–1136.
Muc, M., Svoboda, J. & Freedman, B. 1994. Soils of a high arctic polar desert oasis. In: Svoboda, J. & Freedman, B. (eds), Ecology of a polar desert oasis. Alexandra Fiord, Ellesmere Island, Canada. Captus University Publications, Toronto.
Pastor J. 1995. Diversity of biomass and nitrogen distribution among plant species in arctic and alpine ecosystem. In: Chapin, F. S., III & Körner, C. (eds), Arctic and alpine biodiversity. Springer-Verlag, Berlin.
Sokal, R. R. & Rohlf, F. J. 1981. Biometry. 2nd ed. W. H. Freeman Co., San Francisco. Statistical Graphics Corporation. 1985. Statgraphics users manual (Version 2.1). STSG Inc., Rockville, MD.
Sheard, J. W. & Geale, D. W. 1983a. Vegetation studies at Polar Bear Pass, Bathurst Island, N.W.T. I. Classification of plant communities. Can. J. Bot. 61: 1618–1636.
Sheard, J. W. & Geale, D. W. 1983b. Vegetation studies at Polar Bear Pass, Bathurst Island, N.W.T. II. Vegetation-environment Relationships. Can. J. Bot. 61: 1637–1646.
Sheldrick, B. H. (ed.). 1984. Analytical methods manual. LRRI Contribution No. 84–30. Land Resource Research Institute, Agriculture Canada, Ottawa.
Sterenberg, V. J. & Stone, W. E. 1994. Geology of the Alexandra Fiord Lowland area, Ellesmere Island, N.W.T. In: Svoboda, J. and Freedman, B. (eds), Ecology of a polar desert oasis, Alexandra Fiord, Ellesmore Island, Canada. Captus University Publications, Toronto.
Svoboda, J. & Freedman, B. (eds). 1994. Ecology of a polar oasis. Alxandra Fiord, Ellesmere Island, Canada. Captus University Publications, Toronto.
ter Braak, C. J. F. 1987a. CANOCO-a FORTRAN program for canonical community ordination by [partial] [detrended] [canonical] correspondence analysis, principal components analysis and redundancy analysis (version 2.1). TNO Institute of Applied Computer Science, Statistics Department Wageningen, The Netherlands.
ter Braak, C. J. F. 1987b. Ordination. In: Jongman, R. H. G., ter Braak, C. J. F. & van Tongeren, O. F. R. (eds), Data analysis in community and landscape ecology. Pudoc, Wageningen, The Netherlands.
ter Braak, C. J. F. 1990. Update notes: CANOCO version 3.10. Agricultural Mathematics Group, Wageningen, The Netherlands.
Walker, B. D. & Peters, T. 1977. Soils of the Truelove Lowland and plateau. In: Bliss, L. C. (ed), Truelove Lowland, Devon Island, Canada: a high arctic ecosystem. University of Alberta Press, Edmonton.
Webber, P. J. 1978. Spatial and temporal variation of the vegetation and its production, Barrow, Alaska. In: Tieszen, L. L. (ed.), Vegetation and Production Ecology of an Alaskan Arctic Tundra. Springer-Verlag, New York.
Wielgolaski, F. E., Bliss, L. C., Svoboda, J. & Doyle, G. 1981. Primary production of tundra. In: Bliss, L. C., Heal, O. W. & Moore, J. J. (eds), Tundra ecosystems: a comparative analysis. Cambridge University Press, Cambridge.
Yodzis, P. 1986. Competition, mortality, and community structure. In: Diamond, J. & Case, T. J. (eds), Community Ecology. Harper & Row Publishers, New York.
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Henry, G.H. Environmental influences on the structure of sedge meadows in the Canadian High Arctic. Plant Ecology 134, 119–129 (1998). https://doi.org/10.1023/A:1009731615304
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DOI: https://doi.org/10.1023/A:1009731615304