Atlas of Alberta Lakes by Patricia Mitchell, Ellie E. Prepas

By Patricia Mitchell, Ellie E. Prepas

The Atlas of Alberta Lakes makes a speciality of a hundred of Alberta's best, most well-liked or such a lot studied lakes. It presents the entire details lake clients, scientists and lake managers may wish. an in depth advent explains the clinical phrases and ideas utilized in every one bankruptcy and contains a full-page colour map exhibiting the site of the lakes in accordance with drainage basins.

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Water in lakes described in the Atlas is generally rich in calcium and magnesium from weathering of carbonates. Carbonates are part of the natural buffering capacity in lake water, and consequently protect lakes from acidification by neutralizing acids. In some cases the water may have a strong flavour; in extreme cases such as some of the saline lakes in southeastern Alberta, the shore may even look crusty or salty. Salinity Because anions and cations carry electrical charges, water containing them can conduct electricity, and its ability to do so gives a measure of the total quantity of charged particles (ions) dissolved in it.

20). Studies during the 1980s on 20 lakes located from north of Peace River to south of Kinsella, Alberta, indicate that maximum ice thickness can vary from a minimum of 40 cm to almost 1 m, although the average maximum ice thickness is approximately 60 cm. In Alberta, the duration of ice cover is approximately five months, ranging from more than six months in the mountain lakes and in the northeastern part of the province, to no more than four months in saline lakes and many shallow lakes and reservoirs in southern Alberta.

Higher up in the mountains is the Subalpine Ecore- gion which supports lodgepole pine and Engelmann spruce as the dominant vegetation. Lakes in this ecoregion include the Kananaskis Lakes, Rock Lake and Spray Lakes Reservoir. The highest area is the Alpine Ecoregion where the climate is too harsh for tree growth and vegetation is limited to heaths and shrubby willows. Rocky peaks are barren of all vegetation and glaciers top many mountains. No alpine lakes are discussed in detail in the Atlas, but runoff and glacial meltwater from the Alpine Ecoregion provide inflow to several lakes and to most of the large onstream reservoirs such as Ghost and St.

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