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Vegetatio

, Volume 118, Issue 1–2, pp 131–137 | Cite as

Canadian wetlands: Environmental gradients and classification

  • S. C. Zoltai
  • D. H. Vitt
Article

Abstract

The Canadian Wetland Classification System is based on manifestations of ecological processes in natural wetland ecosystems. It is hierarchical in structure and designed to allow identification at the broadest levels (class, form, type) by non-experts in different disciplines. The various levels are based on broad physiognomy and hydrology (classes); surface morphology (forms); and vegetation physiognomy (types). For more detailed studies, appropriate characterization and subdivisions can be applied. For ecological studies the wetlands can be further characterized by their chemical environment, each with distinctive indicator species, acidity, alkalinity, and base cation content. For peatlands, both chemical and vegetational differences indicate that the primary division should be acidic, Sphagnum-dominated bogs and poor fens on one hand and circumneutral to alkaline, brown moss-dominated rich fens on the other. Non peat-forming wetlands (marshes, swamps) lack the well developed bryophyte ground layer of the fens and bogs, and are subject to severe seasonal water level fluctuations. The Canadian Wetland Classification System has been successfully used in Arctic, Subarctic, Boreal and Temperate regions of Canada.

Key words

Bogs Ecological gradients Fens Marshes Peatlands Shallow lakes Swamps Vegetation classification Water chemistry 

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References

  1. Airphoto Analysis Associates Consultants Limited. 1975. Wetlands-peatlands resources, New Brunswick. Prepared for New Brunswick Department of Natural Resources, Fredericton, New Brunswick. Unpublished Report, 188 pp.Google Scholar
  2. Anon. 1989. Inventory of peatlands in northern Quebec. In: Peatlands and Remote Sensing. Québec Ministère de l'Énergie et des Ressources, Service de la cartographie & Service géologique de Québec. 4 pp.Google Scholar
  3. Bayley, S. E., Vitt, D. H., Newbury, R. W., Beaty, K. G., Behr, R. & Miller, C. 1987. Experimental acidification of a Sphagnum-dominated peatland. Canadian Journal of Fisheries and Aquatic Sciences (Suppl.) 44: 194–205.Google Scholar
  4. Bond, W. K., Cox, K. W., Heberlin, T., Manning, E. W., Witty, D. R. & Young, D. A. 1992. Wetland evaluation guide. North American Wetlands Conservation Council (Canada), Issues Paper No. 1992-1, 121 pp.Google Scholar
  5. Buteau, P. 1989. Atlas des tourbières du Québec méridional. Service géologique de Québec. Gouvernement du Québec, Québec.Google Scholar
  6. Canada Soil Survey Committee. 1978. The Canadian system of soil classification. Publication No. 1646, Canada Department of Agriculture, Ottawa, Canada. 164 pp.Google Scholar
  7. Cowardin, L. M., Carter, V., Golet, F. C. & LaRoe, E. T. 1979. Classification of wetlands and deepwater habitats of the United States. FWS/OBS-79/31. US Fish & Wildlife Service, Washington, D.C. 103 pp.Google Scholar
  8. Damman, A. W. H. 1986. Hydrology, development, and biochemistry of ombrogenous peat bogs with special reference to nutrient relocation in a western Newfoundland bog. Canadian Journal of Botany 64: 384–394.Google Scholar
  9. Dansereau, P. & Segadas-Vianna, F. 1952. Ecological study of the peat bogs of eastern North America. Structure and evolution of vegetation. Canadian Journal of Botany 30: 490–520.Google Scholar
  10. Duk-Rodkin, A. & Hughes, O. L. 1992. Surficial geology, Fort McPherson-Bell River (Map 1745A), Arctic Red River (Map 1746A), Travaillant Lake (Map 1747A), Canot Lake (Map 1478A), Trail River-Eagle River (Map 1744A), Martin House (Map 1743A), Ontaratue River (Map 1742A), Fort Good Hope (Map 1741A), Sans Sault Rapids (Map 1784A). Geological Survey of Canada, Ottawa, Ontario.Google Scholar
  11. Gauthier, R. 1980. La végétation des tourbières et les sphaignes du parc des Laurentides, Québec. Forest Ecology Laboratory, Laval University. Études écologiques No. 3. Québec, Québec. 634 pp.Google Scholar
  12. Gauthier, R. & Grandtner, M. M. 1975. Étude phytosociologique des tourbières du Bas Saint-Laurent, Québec. Naturaliste canadien 102: 109–153.Google Scholar
  13. Hemond, H. F. 1980. Biogeochemistry of Thoreau's Bog, Concord, Massachusetts. Ecological Monographs 50: 507–526.Google Scholar
  14. Jeglum, J. K., Boissonneau, A. N. & Haavisto, V. F. 1974. Toward a wetland classification for Ontario. Dept. of Environment, Canadian Forestry Service, Information Report 0-X-215, 54 pp.Google Scholar
  15. Malmer, N., Horton, D. G. & Vitt, D. H. 1992. Element concentrations in mosses and surface waters of western Canadian mires relative to precipitation chemistry and hydrology. Ecography 15: 114–128.Google Scholar
  16. Millar, J. B. 1976. Wetland classification in western Canada. Environment Canada, Canadian Wildlife Service. Report Series No. 37. 37 pp.Google Scholar
  17. National Wetlands Working Group. 1986. Canada: Distribution of wetlands. In: National Atlas of Canada. Energy, Mines and Resources Canada, Ottawa. 5th edition, Map MCR 4107.Google Scholar
  18. Nicholson, B. H. 1992. The Wetlands of Elk Island National Park: Vegetation, Development and Chemistry. Ph.D. Dissertation. University of Alberta, Edmonton.Google Scholar
  19. Osvald, H. 1925. Die Hochmoortypen Europas. Veroff. Geobot. Inst. Eidg. Tech. Hochsch. Volume 3. Rubel. Zürich, Switzerland 707–723.Google Scholar
  20. Pala, S. & Boissonneau, A. 1982. Wetland classification maps for the Hudson Bay Lowlands. Naturaliste canadien 109: 653–659.Google Scholar
  21. Radforth, N. W. 1969. Classification of muskeg. In: Muskeg Engineering Handbook. I. C. MacFarlane, editor. University of Toronto Press. Toronto, Ontario: 31–52.Google Scholar
  22. Sjörs, H. 1952. On the relation between vegetation and electrolytes in North Swedish mire waters. Oikos 2(1950): 241–258.Google Scholar
  23. Sjörs, H. 1969. Bogs and fens of the Hudson Bay Lowlands. Arctic 12: 3–19.Google Scholar
  24. Tarnocai, C. (chairman). 1988. The Canadian Wetland Classification System. In: Wetlands of Canada. Rubec, C.D.A. (coordinator). Polyscience Publications Inc., Montréal, Québec: 413–427.Google Scholar
  25. Vitt, D. H. 1990. Growth and production dynamics of boreal mosses over climatic, chemical, and topographic gradients. Botanical Journal of the Linnean Society 104: 35–59.Google Scholar
  26. Vitt, D. H. (project leader). 1992. The Peatlands of Alberta: A 1:1 000 000 summary map. Nicholson, B. H. & Halsey, L. H. (eds.) Alberta Forestry, Lands and Wildlife, Edmonton.Google Scholar
  27. Vitt, D. H. & Slack, N. G. 1975. An analysis of the vegetation of Sphagnum-dominated kettle hole bogs in relation to environmental gradients. Canadian Journal of Botany 53: 332–359.Google Scholar
  28. Vitt, D. H., Achuff, P. & Andrus, R. E. 1975. The vegetation and chemical properties of patterned fens in the Swan Hills, north central Alberta. Canadian Journal of Botany 53: 2776–2795.Google Scholar
  29. Zoltai, S. C. & Johnson, J. D. 1987. Relationships between nutrients and vegetation in peatlands of the Prairie Provinces. In: Proceedings, Symposium '87: Wetlands/Peatlands. Rubec, C. D. A. & Overend, R. P. (compilers). Edmonton, August 23–27, 1987: 535–542.Google Scholar
  30. Zoltai, S. C., Pollett, F. C., Jeglum, J. K., & Adams, G. D. 1975. Developing a wetland classification for Canada. In: Forest soils and forest land management. Bernier, B. & Winget, C. H. (eds). Proc. 4th North American Forest Soils Conference, Québec, August, 1973: 497–511.Google Scholar

Copyright information

© Kluwer Academic Publishers 1995

Authors and Affiliations

  • S. C. Zoltai
    • 1
  • D. H. Vitt
    • 2
  1. 1.Northern Forestry CentreForestry CanadaEdmontonCanada
  2. 2.Devonian Botanic GardenThe University of AlbertaEdmontonCanada

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