Environmental change in the Great Whale River region, Hudson Bay: Five decades of multidisciplinary research by Centre d'études nordiques (CEN)
- 1 September 2011
- journal article
- Published by Taylor & Francis in Écoscience
- Vol. 18 (3), 182-203
- https://doi.org/10.2980/18-3-3469
Abstract
The Great Whale River region on the eastern shore of Hudson Bay, Canada, encompasses the villages of Whapmagoostui (Cree First Nation) and Kuujjuarapik (Inuit) and surrounding areas. The principal field station of Centre d'études nordiques (CEN: Centre for Northern Studies) has operated at Whapmagoostui-Kuujjuarapik (W-K; 55° 15′ N, 77° 45′ w) since the 1970s, with diverse research projects on past and present environments. The climate at W-K is strongly influenced by the proximity of Hudson Bay, and the recent pronounced loss of sea ice in this sector of northern Canada has been accompanied by large increases in air temperature. Discontinuous or scattered permafrost occurs throughout the region and is degrading rapidly. The W-K region continues to experience particularly rapid isostatic uplift in response to the retreat of the Laurentide Ice Sheet. Parabolic dunes occur along the coast and are strongly influenced by the plant cover. Paleoecological studies have documented the Holocene evolution... Résumé : La région de la Grande rivière de la Baleine, sur la côte est de la baie d'Hudson, Canada, comprend les villages Cri (Whapmagoostui) et Inuit (Kuujjuarapik), ainsi que les zones environnantes. Le Centre d'études nordiques (CEN) opère à Whapmagoostui-Kuujjuarapik (W-K : 55° 15′ N, 77° 45′ o) sa principale station de recherche depuis la décennie 1970. De nombreuses recherches portant sur l'étude des environnements passés et actuels y ont été menées. Le climat de la région est fortement influencé par la proximité de la baie d'Hudson où, depuis quelques décennies, la diminution de la glace de mer a été accompagnée d'une augmentation significative de la température de l'air. Le pergélisol est discontinu ou dispersé et présentement en dégradation. La région est caractérisée par un taux de relèvement isostatique particulièrement rapide en réponse au retrait de l'Inlandsis laurentidien. Des dunes paraboliques, situées le long de la côte, progressent en étroite relation avec le couvert végétal. Des études...Keywords
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