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PEATLANDS AND MARSHES IN THE WETLAND REGIONS OF CANADA

Published online by Cambridge University Press:  31 May 2012

S.C. Zoltai
S.C. Zoltai*
Affiliation:
Canadian Forestry Service, Northern Forestry Centre, 5320-122 Street, Edmonton, Alberta, Canada T6H 3S5
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Abstract

Peatland development in Canada is influenced by climatic conditions, specifically a north–south temperature and an east–west precipitation gradient, resulting in specific and characteristic kinds of wetlands. The wetland classes (bogs, fens, marshes) are broad ecological units, each composed of distinctive groups of vegetation growing in appropriate habitats. Bogs usually develop in nutrient-poor areas where there is little movement of groundwater, whereas fens occur in more mineral-rich environments having a slowly moving water table. Marshes develop in areas that are periodically inundated by oxygen-rich water. Included within the peatlands are water environments ranging from small puddles to pools, each with a water quality that is influenced by the surrounding peatland.

Résumé

Le développement de tourbières au Canada dépend des conditions climatiques, et plus spécifiquement de gradients de température selon l'axe nord–sud et de précipitation selon l'axe est–ouest, créant des milieux humides spécifiques et caractérisés. Les types reconnus ici de milieux humides (tourbières ombrotrophes, tourbières minérotrophes, marécages) sont des unités écologiques globales, chacun étant défini par des groupes végétaux caractéristiques croissant dans des habitats appropriés. Les tourbières ombrotrophes se développent normalement dans les endroits pauvres en nutriments où il y a absence presque totale de mouvement des eaux souterraines, alors que les tourbières minérotrophes apparaissent dans les endroits riches en nutriments où la table d'eau se déplace lentement. Les marécages se développent dans les endroits périodiquement inondés d'eau bien oxygénée. Intégrés aux tourbières se trouvent des habitats aquatiques allant de petits trous d'eau à des mares de grande taille, et dont la qualité de l'eau dépend de la tourbière environnante.

Type
Research Article
Information
The Memoirs of the Entomological Society of Canada , Volume 119 , Supplement S140 , 1987 , pp. 5 - 13
Copyright
Copyright © Entomological Society of Canada 1987

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References

Anonymous. 1962. The climate of Canada, pp. 21–51in The Canada Yearbook, 1959–1960. Dominion Bureau of Statistics, Ottawa.Google Scholar
Dirschl, H.J. 1972. Geobotanical processes in the Saskatchewan River Delta. Can. J. Earth Sci. 9: 1529–1549.Google Scholar
Glooschenko, W.A. 1980. Coastal salt marshes in Canada, pp. 39–47in Rubec, C.D.A., and Pollett, F.C. (Eds.), Proc. Workshop on Canadian Wetlands. Ecol. Land Classif. Ser. Environ. Can. 12.Google Scholar
Leffingwell, E. De K. 1915. Ground-ice wedges; the dominant form of ground-ice on the north coast of Alaska. J. Geol. 23: 635–654.Google Scholar
Millar, J.B. 1976 Wetland classification in western Canada. Rep. Ser. Can. Wildl. Serv. 37. 38 pp.Google Scholar
Raup, H.M. 1935. Botanical investigations in Wood Buffalo National Park. Bull. natn. Mus. Can. 74 (Biol. Ser. 20). 174 pp.Google Scholar
Tarnocai, C. 1980. Canadian wetland registry, pp. 9–38in Rubec, C.D.A., and Pollett, F.C. (Eds.), Proc. Workshop on Canadian Wetlands. Ecol. Land Classif. Ser. Environ. Can. 12.Google Scholar
Walker, J.M. 1965. Vegetation changes with falling water levels in the Delta Marsh, Manitoba. Ph.D. thesis, University of Manitoba, Winnipeg. 272 pp.Google Scholar
Wells, E.D. 1981. Peatlands of eastern Newfoundland: distribution, morphology, vegetation, and nutrient status. Can. J. hot. 59: 1978–1997.Google Scholar
Wells, E.D., and Pollett, F.C.. 1983. Peatlands. pp. 207–265in South, G.R. (Ed.), Biogeography and Ecology of the Island of Newfoundland. Junk Publ., The Hague.Google Scholar
Zoltai, S.C. 1980. An outline of the wetland regions of Canada, pp. 1–8in Rubec, C.D.A., and Pollett, F.C. (Eds.), Proc. Workshop on Canadian Wetlands. Ecol. Land Classif. Ser. Environ. Can. 12.Google Scholar
Zoltai, S.C., and Pollett, F.C.. 1983. Wetlands in Canada: their classification, distribution, and use. pp. 245–268in Gore, A.J.P. (Ed.), Ecosystems of the World. Vol. 4B. Mires: Swamp, Bog, Fen and Moor. Regional Studies. Elsevier, Amsterdam.Google Scholar
Zoltai, S.C., Pollett, F.C., Jeglum, J.K., and Adams, G.D.. 1973. Developing a wetland classification for Canada. pp. 497–511in Bernier, B., and Winget, C.H. (Eds.), Proc. 4th N. Am. Forest Soils Conf. Les Presses de L'Université Laval, Québec.Google Scholar
Zoltai, S.C., and Tarnocai, C.. 1975. Perennially frozen peatlands in the western Arctic and Subarctic of Canada. Can. J. Earth Sci. 12: 28–43.Google Scholar