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Typologie des lacs polaires: une démarche de géographie limnologique

Abstract : The major typological criterion for classifying polar lakes is the isolation by the ice cover. The significance of this phenomenon depends on the inter-annual regularity of the ice regime. Continental glaciers are the main obstacle between water and atmosphere; perennially frozen lakes are largely isolated too. The seasonally frozen lakes are either shallow and deep lakes. Polar ponds and shallow lakes, which may completely freeze and disappear each year, are biologically poor, whereas deep polar lakes present a complete trophic cycle despite the great water level fluctuations.
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Submitted on : Tuesday, April 16, 2019 - 2:26:04 PM
Last modification on : Tuesday, October 12, 2021 - 5:20:33 PM

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Laurent Touchart. Typologie des lacs polaires: une démarche de géographie limnologique. Norois, Presses universitaires de Rennes, 2005, pp.97-107. ⟨10.4000/norois.665⟩. ⟨hal-02101044⟩



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