BIOL 2903 Lecture Notes - Lecture 19: Southern Ridges, Lake Superior, Polypodium

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Largest freshwater lake in the world is lake superior: contains more water than all lakes combined. Lake effect: once water is warm, it helps moderate temperature for nearest land, great lake depresses summer temperatures while increasing winter temperature, north shore of ls has some of the highest elevations in ontario. Xanthoria lichen: calcium is present here because . Bird droppings land on xanthoria lichen and the birds had a fish diet. The highest elevation/ vertical rise in ontario is the sleeping giant (1200 feet= 380 m: altitude brings a decrease in temperature, cold winds from lake. Subarctic flora- grows along superiors north shore of superior boreal and on islands. Alpine woodsia a subarctic species is present. Xanthoria lichen is an example of subarctic flora. Ninebark, shrubby cinquefoil, kalms robelia all like calcium and are calciphillic. Basalt islands: volcanic rocks like basalt formed from magma.

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