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Temporal and Spatial Invasion

Temporal and Spatial Invasion. Time. Generation and ‘a half’. Field invasion Large fires First generation poor wood quality “wolf trees”. Cohort.

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Temporal and Spatial Invasion

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  1. Temporal and Spatial Invasion

  2. Time

  3. Generation and ‘a half’ • Field invasion • Large fires • First generation poor wood quality • “wolf trees”

  4. Cohort Cohort = all trees that initiate after a disturbance. Oldest trees in a cohort are those that initiate first; youngest trees are those that initiate just before all growing space is occupied.

  5. Cohorts Number of trees Age

  6. Space

  7. CLUMPINESS • Variable density • Microsite

  8. Stem maps? • Asymmetric crowns • Leaning trees

  9. Including the 3rd dimension • Lower strata can be clumped at a different spatial scale

  10. Scale • Grain size

  11. Random? A B C D E F G H

  12. Basic Stocking

  13. Basic Stocking

  14. Basic Stocking

  15. Basic Stocking

  16. Basic Stocking

  17. Basic Stocking

  18. Basic Stocking and Yield 1.0 Relative Yield 0.0 Stocking

  19. Elements of Regeneration Stocking Basic • Are there enough trees to occupy all of the available growing space? Enhanced • Is the growing space allocated in a manner that we will achieve our desired future forest condition?

  20. Allocation of Growing Space- a simple case -

  21. Allocation of Growing Space- a more complex case - • Species composition • Species Intermingling • Spatial Pattern • Vertical Structure • Scale • Stand Density

  22. Succession - Conifers

  23. Succession - Conifers

  24. Succession - Conifers

  25. Succession - Conifers

  26. Succession - Conifers

  27. Succession - Mixedwoods

  28. The Conifer Free-Growing Paradigm Not OK OK

  29. The Conifer Free-Growing Paradigm Mixedwoods are a continuum of competitive conditions

  30. C CD DC D New Mixedwood Paradigmfor Regeneration Standards

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