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FOR 101 Trees of the Week

Explore the historical changes in the area of aspen-paper birch type in Michigan, with a focus on Quaking Aspen (Populus tremuloides) and Bigtooth Aspen (P. grandidentata). Discover the natural range and characteristics of these trees, including their xeric, dry mesic, mesic, wet mesic, and hydric habitats. Learn about the significant increase in acreage for aspen forests over the years and the presence of "suckers" and hybrid poplar varieties.

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FOR 101 Trees of the Week

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  1. FOR 101 Trees of the Week Quaking aspen Populus tremuloides Bigtooth aspen P. grandidentata

  2. Aspen or “popple” 1

  3. 2

  4. Quaking Bigtooth 3

  5. 4

  6. Ripe capsules Ripening capsules 5

  7. Aspen “suckers” 6

  8. 7

  9. 8

  10. 9

  11. Quaking Bigtooth Xeric… Dry mesic… Mesic… Wet mesic… Hydric 10

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  16. Circa 1800 ~ 280 thousand acres 1935 ~ 5.1 million acres Historical changes in the area of the aspen-paper birch type in Michigan Today ~ 3.0 million acres 15

  17. Historic forest composition changes at a location in Cheboygan County Michigan (Data from Palik & Pregitzer 1992) 16

  18. 17

  19. “Hybrid poplar” 18

  20. 19

  21. Natural range of trembling aspen 20

  22. Natural range of bigtooth aspen 21

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