BIOL 2903 Lecture Notes - Lecture 20: Atlantic Ocean, Typha, Lake Superior
11 Apr 2017
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Document Summary
Lies on canadian shield (metamorphic rock) which is hard and acidic. Balsam fir more common because there is more moisture here that is not found in western (prairie) boreal. Why: prairie winds coming in and dropping moisture that was picked up from the great lakes, glacial deposits that hold water. Big clay deposits were left behind by glacial deposits. Fens- peatlands with more nutrients than bogs (remember there is more nutrients here from moving water, clay and lots of sedges) Clay belt supports many plants that like basic ph soils. Showy lady slipper found in cedar swampls because it likes calcium. Paddle ducks apparent here in clay belt. Virginia rail: has longer toes for walking in water, marsh birds that are rare in western boreal forest but apparent here because of the rich waters and cattail marshes. Pink lady"s slipper: acidic forests, coniferous woods. Sparrow"s egg: cold climates, calcium, on hbl rivers, lake superior.
