Abstract
Patchy wetlands are commonly found in the polar desert at localities where ample water supply is available during the thawed season. These wetlands can occur on a wide range of topography, and they support more luxuriant vegetation than their surrounding areas. Snowbank wetlands are characterized by a zonation of vegetation, with increasingly rich plant coverage away from the snowbed edge. Ground-water wetlands usually occupy topographic concavities or depressions, with exfiltration of subsurface water to sustain a high water table and to provide an enrichment of nutrients. Riverine wetlands experience prolonged flooding during the peak snowmelt season, and their vascular plant cover is low owing to inundation by the cold, turbulent stream water. Lakes and ponds are associated with topographic depressions, receiving surfaceand ground-water inputs from catchment areas larger than the surface extent of the water bodies. Their evaporation rates are high, but the open water season is curtailed by ice cover. Lake outflow wetlands are supported by spillage and seepage from lakes, and they maintain a relatively lush vegetation cover. Coastal wetlands form narrow strips enclosed by raised beaches, with high salinity that limits plant diversity. Strong interactions exist among the water and heat fluxes to the wetland, the vegetation, and the hydrogeomorphology. Locally enhanced water supply and shallow permafrost enable frequent saturation, augmenting nutrient enrichment and encouraging vegetation development. Slow vegetation decay in a cold environment facilitates the formation of peat. The saturated soil conditions give rise to large ground-ice content in the winter, requiring much latent heat for ground thaw in subsequent summers. This, together with the insulating properties of the organic layer, creates shallow frost tables during the summer and produces a positive feedback that maintains high water tables in the wetlands to favor plant growth.
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Literature Cited
Batten, D. S. and J. Svoboda. 1994. Plant communities in the uplands in the vicinity of the Alexandra Fiord Lowland. p. 97–110. In J. Svoboda and B. Freedman (eds.) Ecology of a Polar Oasis, Alexandra Fiord, Ellesmere Island. Captus University Publications, Toronto, Ontario, Canada.
Bliss, L. C. 1977. Truelove Lowland, Devon Island, Canada: a High Arctic Ecosystem. University of Alberta Press, Edmonton, AB, CANADA.
Bliss, L. C. and K. M. Peterson. 1992. Plant succession, competition and the physiological constraints of species in the Arctic. p. 111–133. In F. S. Chapin III, R. L. Jefferies, J. F. Reynolds, G. R. Shaver, J. Svoboda, and E. W. Chu (eds.) Arctic Ecosystems in a Changing Climate, an Ecophysiological Perspective. Academic Press, New York, NY, USA.
Brown, J., S. L. Dingman, and R. I. Llewellyn. 1968. Hydrology of a drainage basin on the Alaska coastal plain. U.SS. Army Corp of Engineers, Hanover, NH, USA. CRREL Research Report 240.
Buttle, J. M. and K. E. Fraser. 1992. Hydrochemical fluxes in a High Arctic wetland basin during spring melt. Arctic and Alpine Research 24:153–164.
Carey, S. K. and M. K. Woo. 1998. A case study of active layer thaw and its controlling factors. Proceedings, 7th International Conference on Permafrost, Yellowknife, NWT, Canada: 127–132.
Church, M. 1974. Hydrology and permafrost with reference to northern North America. Proceedings, Workshop Seminar on Permafrost Hydrology. Canadian National Committee, IHD., Ottawa, ON, CANADA:7–20.
Cruickshank, J. 1971. Soil and terrain units around Resolute, Cornwallis Island. Arctic 24:195–209.
Douglas, S. V., J. P. Smol, and W. Blake. 1994. Marked post-18th century environmental change in High Arctic ecosystems. Science 266:416–419.
Edlund, S. A. 1991. Preliminary surficial geology of Cornwallis and adjacent islands, Northwest Territories. Geological Survey of Canada Paper 89–12:30.
Edlund, S. A. 1992. Vegetation of Cornwallis Island and adjacent islands, Northwest Territories: relationships between vegetation and surficial materials. Geological Survey of Canada Paper 89–26:124.
French, H. M. 1996. The Periglacial Environment, second edition. Addison Wesley Longman, Edinburgh Gate, UK.
Glenn, M. S. and M. K. Woo. 1997. Spring and summer hydrology of a valley-bottom wetland, Ellesmere Island, Northwest Territories, Canada. Wetlands 17:321–329.
Gorham, E., J. K. Underwood, J. A. Jassens, B. Freedman, M. Wolfgang, D. H. Waller, and J. G. Ogden III. 1998. The chemistry of streams in southwestern and central Nova Scotia, with particular reference to catchment vegetation and the influence of dissolved organic carbon primarily from wetlands. Wetlands 18:115–132.
Hay, M. B., J. P. Smol, K. J. Pipke, and F. W. Lesack. 1997. A diatom-based paleohydrological model for the Mackenzie Delta, Northwest Territories, Canada. Arctic and Alpine Research 29: 430–444.
Heron, R. and M. K. Woo. 1994. Decay of a High Arctic lake ice cover: observations and modelling. Journal of Glaciology 40:283–292.
Kielland, K. and F. S. Chapin III. 1992. Nutrient absorption and accumulation in arctic plants. p. 321–333. In F. S. Chapin III, R. L. Jefferies, J. F. Reynolds, G. R. Shaver, J. Svoboda, and E. W. Chu (eds.) Arctic Ecosystems in a Changing Climate, an Ecophysiological Perspective. Academic Press, New York, NY, USA.
Luthin, J. N. 1966. Drainage Engineering. John Wiley and Sons. London, UK.
Marsh, P. and M. K. Woo. 1977. The water balance of a small pond in the High Arctic. Arctic 30:109–117.
Muller-Dombois, D. and H. Ellenberg. 1974. Aims and Methods of Vegetation Ecology, John Wiley and Sons, New York, NY, USA.
Polunin, N. 1948. Botany of the Canadian Eastern Arctic, part III, vegetation and ecology. Department of Mines and Resources, Ottawa, ON, CANADA. Bulletin No. 104.
Porsild, A. E. 1951. Plant Life in the Arctic. Reprinted from the Canadian Geographical Journal, March, 1951:127.
Porsild, A. E. and W. J. Cody. 1980. Vascular plants of Continental Northwest Territories, Canada. National Museum of Natural Sciences, Ottawa, ON, CANADA.
Roulet, N. T. and M. K. Woo. 1986a. Hydrology of a wetland in the continuous permafrost region. Journal of Hydrology 89:73–91.
Roulet, N. T. and M. K. Woo. 1986b. Low Arctic wetland hydrology. Canadian Water Resources Journal 11:69–75.
Rovansek, R. J., L. D. Hinzman, and D. L. Kane. 1996. Hydrology of a tundra wetland complex on the Alaskan arctic coastal plain, U.S.A. Arctic and Alpine Research 28:311–317.
Stutz, R. C. and L. C. Bliss. 1975. Nitrogen fixation in soils of Truelove Lowland, Devon Island, Northwest Territories. Canadian Journal of Botany 53:1387–1399.
Tarnocai, C. and S. C. Zoltai. 1988. Wetlands of Arctic Canada. p. 27–53. In C. Tarnocai and S. C. Zoltai (eds.) Wetlands of Canada: Ecological Land Classification Series No. 24. Environment Canada and Polysciences Publications Inc., Montreal, PQ, CANADA.
Thorsteinsson, R. 1958. Cornwallis and Little Cornwallis islands, District of Franklin, Northwest Territories. Geological Survey of Canada Memoir 294:1134
Washburn, A. L. 1979. Geocryology: a Survey of Periglacial Processes and Environments. Wiley and Sons, New York, NY, USA.
Washburn, A. L. 1983. Palsas and continuous permafrost. Proceedings, 4th International Conference in Permafrost, Fairbanks, Alaska, National Academy Press, Washington, DC, USA: 1372–1377.
Woo, M. K. 1988. Wetland runoff regime in northern Canada. Proceedings, 5th International Conference on Permafrost, Trondheim, Norway: 644–649.
Woo, M. K. 1998. Arctic snowcover information for hydrological investigations at various scales. Nordic Hydrology 29:331–346.
Woo, M. K., R. L. Heron, P. Marsh, and P. Steer. 1983. Comparison of weather station snowfall with winter, snow accumulation in High Arctic Basins. Atmosphere-Ocean 2:235–252.
Woo, M. K., R. L. Heron, and P. Steer. 1981. Catchment hydrology of a High Arctic lake. Cold Regions Science and Technology 5: 29–41.
Woo, M. K. and J. Sauriol. 1980. Channel development in snow-filled valleys, Resolute, N.W.T., Canada. Geografiska Annaler 62A:37–56.
Woo, M. K. and P. Steer. 1982. Occurrence of surface flow on arctic slopes, southwestern Cornwallis Island. Canadian Journal of Earth Sciences 19:2368–2377.
Woo, M. K. and P. Steer. 1983. Slope hydrology as influenced by thawing of the active layer, Resolute, N.W.T. Canadian Journal of Earth Sciences 20:978–986.
Woo, M. K. and Z. J. Xia. 1995. Suprapermafrost ground water seepage in gravely terrain, Resolute, N.W.T., Canada. Permafrost and Periglacial Processes 6:57–72.
Woo, M. K. and K. L. Young. 1997. Hydrology of a small drainage basin with polar oasis environment, Fosheim Peninsula, Ellesmere Island, Canada. Permafrost and Periglacial Processes 8:257–277.
Woo, M. K. and K. L. Young. 1998. Characteristics of patchy wetlands in a polar desert environment, arctic Canada. Proceedings, 7th International Conference on Permafrost, Yellowknife, N.W.T., Canada: 1141–1146.
Young, K. L. and M. K. Woo. 2000. Hydrological response of a patchy High Arctic wetland. Nordic Hydrology 31:317–338.
Young, K. L. and M. K. Woo. 2003. Thermo-hydrological responses to an exceptionally warm, dry summer in a High Arctic environment. Nordic Hydrology 34:51–70.
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Woo, Mk., Young, K.L. Hydrogeomorphology of patchy wetlands in the high arctic, polar desert environment. Wetlands 23, 291–309 (2003). https://doi.org/10.1672/8-20
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DOI: https://doi.org/10.1672/8-20