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Whole-plant plasticity of balsam fir and paper birch on extreme sites in eastern Cape Breton

Whole-plant plasticity of balsam fir and paper birch on extreme sites in eastern Cape Breton. Jeff Clements. What is Balsam Fir?. Coniferous Christmas Trees Abundant in Cape Breton Flat needles Symmetrical shape Shade Tolerant Wide variety of sites (moist lowlands). What is Balsam Fir?.

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Whole-plant plasticity of balsam fir and paper birch on extreme sites in eastern Cape Breton

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  1. Whole-plant plasticity of balsam fir and paper birch on extreme sites in eastern Cape Breton Jeff Clements

  2. What is Balsam Fir? • Coniferous • Christmas Trees • Abundant in Cape Breton • Flat needles • Symmetrical shape • Shade Tolerant • Wide variety of sites (moist lowlands)

  3. What is Balsam Fir? http://www.itascaswcd.org/Tree%20and%20Shrub%20Indiv.%20Pics/Balsam%20Fir%20-%20Needles.jpg http://www.tree-city.net/images/FraserFir1.jpg

  4. What is Balsam Fir? • Atlantic, Quebec, Ontario, Prairies, USA http://www.survivaltopics.com/survival/balsam-fir-pitch/

  5. Introduction • Resources important for growth • Tilman 1985 • Resource Ratio Hypothesis

  6. Introduction • Resource Ratio Hypothesis • High resources • Growth • Decreased resources • Death • Returned resources • Equilibrium • Competition

  7. Introduction • Biomass Allocation • Energy from resources • Different organs • Conditions • Competition

  8. Introduction • Different sites (conditions) • Shoot (branches) with no competition • Roots with competition

  9. Materials and Methods • Balsam Fir and Paper Birch • Small & large canopy openings • Extremely rocky ground • Presence and absence of competition

  10. Materials and Methods • Competition • CC=free growing • No Competition • NC=dug and wrapped

  11. Materials and Methods • 40 trees • Mass of needles, stem, branches, coarse/fine root • RSR, BSR, LMR • 2 tailed T-tests

  12. Results

  13. Results

  14. Results

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