White Birch

Cognitive

Comprehension

Application

Synthesis / Modelling

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Educational Fun

Comprehension based activities

The Trout Lake watershed and the geographical area just North of it is the home of giant white birch trees. Straight, knot-free, and very large, they were sought by native people from afar as raw materials for the construction of birch bark canoes. Centuries ago a local group of aboriginal people made and traded birch bark canoes for other goods such as furs from the North and grains from the South.

1. Explain the following terms: aquatic ecosystem, terrestrial ecosystem, watershed.
2. Examine the following photograph carefully. What kind of bass is this? Why ?

What kind of bass is this?

3. From 1980 to 1990 over 100 000 small lake trout were stocked in Trout Lake. Yet in 1991, the angling season for lake trout was closed. Explain how this came to be. What fisheries management strategies could we have used in the 1980's to ward off the need to close the fishery in 1991?
4. Why do you think scientists usually refer to fish species using their latin names, when they write about them ?
5. Bass lay much fewer eggs than walleye, yet both species manage to survive. Explain the different strategies that are used by these two fish species when it comes to laying eggs and rearing their young
6. Explain how, over the last ten thousand years, Lake Huron (one of the Great Lakes) stopped draining east, and started draining south.


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