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Using SIMPPLLE to address questions: Has our management altered how a landscape is developing?

SIMPPLLE. Using SIMPPLLE to address questions: Has our management altered how a landscape is developing? How would a landscape have changed without our actions? Can the managed landscape ever return to “historic conditions”. *Work was originally done in Feb 04, modifications made to show

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Using SIMPPLLE to address questions: Has our management altered how a landscape is developing?

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  1. SIMPPLLE Using SIMPPLLE to address questions: Has our management altered how a landscape is developing? How would a landscape have changed without our actions? Can the managed landscape ever return to “historic conditions” *Work was originally done in Feb 04, modifications made to show potential to address cumulative impacts

  2. SIMPPLLE Using FRAGSTATS with SIMPPLLE output to provide quantification of landscape patterns. Three metrics selected for comparison purposes only

  3. SIMPPLLE Fortine drainage – Kootenai National Forest approximately 25,000 acres

  4. SIMPPLLE Current landscape is the result of significant level of clearcut harvest systems.

  5. SIMPPLLE How do Fragstats metrics of the current landscape compare to what existed prior to harvests What will be the metrics of a future landscape as a result of the harvesting and the continued application of fire suppression? Would the metrics of a future landscape without the harvesting (but with disturbance processes) be different? What are possible values of historic landscapes that include levels of mountain pine beetle and fire processes? How different is the future landscape as described by the metrics from possible historic landscapes?

  6. Very large Medium Openings Large pole Current size class converted to a grid of 5 acre cells

  7. Very large Medium Openings Large pole Future size classes from a 50 year SIMPPLLE simulation with harvest (5 acre cells)

  8. Very large Medium Openings Large pole Preharvest size classes converted to 5 acre cells

  9. Very large Medium Openings Large pole need to simulate forward without harvest but with expected natural processes Preharvest size classes converted to 5 acre cells

  10. Simulated mpb activity that has occurred with harvesting. Simulated mpb activity that would have occurred without harvesting

  11. Simulated stand replacing fire with harvest. Simulated stand replacing fire without harvest – but with fire suppression. Modeling of fire suppression may be too effective so ---

  12. Simulation of fire without suppression showing impact of mpb activity without harvest on the fire processes

  13. Very large Medium Openings Large pole Three historic size classes from SIMPPLLE simulations Created historic starting with preharvest conditions

  14. SIMPPLLE Would need to add what the current and a future would be without the past harvest With harvest The “shape range” metric for the entire landscape of the current and future fall well below that of any simulated historic landscape. The trend from the current to the future is for a continued decrease.

  15. SIMPPLLE Would need to add what the current and a future would be without the past harvest With harvest The harvesting created a class metric for “shape range” greater than any simulated historic value. However the future trend is for a rapid decrease below any simulated historic value.

  16. SIMPPLLE Would need to add what the current and a future would be without the past harvest With harvest The harvesting created a class metric for “area range” greater than any simulated historic value. However the future trend is for a rapid decrease below any simulated historic value.

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