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Trees of Oregon
- 5. SUGAR PINE
- 7. DOUGLAS FIR
- 8. WHITE FIR
- 9. RED FIR (MT. ASHLAND & CRATER LAKE) Difficult to tell from noble fir due to hybridization
- 10. NOBLE FIR (GROWS IN CASCADES) Hybridizes with white fir and red fir
- 11. PACIFIC YEW
- 12. MOUNTAIN HEMLOCK
- 13. BIG LEAF MAPLE
- 14. OREGON ASH
- 15. WILLOWS
- 16. BLACK COTTONWOOD
- 17. WHITE ALDER
- 18. OREGON WHITE OAK
- 20. PACIFIC MADRONE
- 22. WHAT IS SUCCESSION? •The natural, gradual change of an area
- 23. WHAT’S THE DIFFERENCE BETWEEN PRIMARY AND SECONDARY SUCCESSION? • Primary= Everything obliterated. Starting without soil. • Secondary= Major disturbance but didn’t wipe out everything living; happens much faster
- 24. WHAT TWO ORGANISMS HAVE A MUTUALISTIC RELATIONSHIP TO CREATE LICHEN? •Algae and Fungus!
- 25. WHAT THREE FORMS DO LICHEN TAKE? •Crustose •Fruticose •Foliose
- 27. WHAT ARE THE FIRST ORGANISMS TO COLONIZE AN AREA CALLED? •Pioneer species
- 28. LABEL THIS DIAGRAM WITH THE CORRECT STAGES OF FOREST SUCCESSION
- 29. GOT THAT ONE? TRY THIS ONE:
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Editor's Notes
- Lichen morphology Lichens are divided into three growth forms: crustose (crusty), fruticose (shrubby) and foliose (leafy). Crustose lichens form crusts on surfaces such as tree bark, rocks, and sidewalks. Fruticose lichens are branched and shrub-like, often resembling miniature tree branches (Letharia) or long beards (Usnea and Bryoria). Fruticose lichens can be found on tree branches and trunks and hold onto the tree a central sucker-like holdfast. Foliose lichens are leaf like and attach to tree branches and trunks by their lower surface (Platismatia).