LIMNOLOGICAL FEATURES OF CIRQUE LAKES ON MOSKENESØY, LOFOTEN, NORTHERN NORWAY
Physical and chemical features of four cirque lakes situated in the Precambrian Basement north of the Arctic Circle are studied. Temperature, oxygen, water colour, turbidity and CODMn profiles together with transparency and lake colour indicate that the lakes are dimictic and oligotrophic. Deficiency of phosphorus are probably the main factor limiting primary production. The total amounts of electrolytes are low and precipitation turn out to be the most important factor in supplying major ions to the lakes. Loss of alkalinity indicates that an acidification process is going on even in this remote area.