evaluating approaches to ecosystem management using fvs n.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
Evaluating Approaches to “Ecosystem Management” Using FVS PowerPoint Presentation
Download Presentation
Evaluating Approaches to “Ecosystem Management” Using FVS

Loading in 2 Seconds...

play fullscreen
1 / 86

Evaluating Approaches to “Ecosystem Management” Using FVS - PowerPoint PPT Presentation


  • 173 Views
  • Updated on

Evaluating Approaches to “Ecosystem Management” Using FVS. Steve McConnell NWIFC August 29, 2002. Ecosystem Management Principles. Multiple scales Ecosystem processes Humans Sustainability Biodiversity Boundaries Adaptive. Challenges Facing EM. Tradeoffs remain unknown. Tradeoffs?.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

Evaluating Approaches to “Ecosystem Management” Using FVS


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
    Presentation Transcript
    1. Evaluating Approaches to “Ecosystem Management” Using FVS Steve McConnell NWIFC August 29, 2002

    2. Ecosystem Management Principles Multiple scales Ecosystem processes Humans Sustainability Biodiversity Boundaries Adaptive

    3. Challenges Facing EM Tradeoffs remain unknown

    4. Tradeoffs? Timber Removed • volume • species • piece size • variability • predictability

    5. Tradeoffs? Residual Landscape • snags • old-growth • relative density • species composition

    6. Tradeoffs? Ecological Changes • bird habitat • insects • pathogens • crown fire risk

    7. Demonstration Project Citizen partners Landscape planning Long history of management 10 years ago 60 years ago

    8. Landscape Planning for Ecosystem Sustainability • Develop a landscape planning method that: • 1) incorporates social, economic and ecological considerations, and • 2) integrates between stands and landscape

    9. Landscape Planning for Ecosystem Sustainability • Identify landscape management zones • Develop silvicultural Rx’s • Quantify outcomes using the Forest Vegetation Simulation (FVS) model

    10. Site Characteristics Warm moist forest at low elevation Very productive Diverse

    11. Previous Management

    12. Previous Management

    13. Change in Species Composition by Shade Tolerance Grouping

    14. Diverse Social Values • Recreation • Roads and fire risk • Visuals • Old-growth • Increase early seral • Biological diversity • Water quality • Change (economic, population, social)

    15. Plan • With Citizen Partners, develop an EM approach • Compare against a commodity and custodial approach

    16. What Really Happened • FACA • All approaches can be part of an EM approach, scale-dependent • Our EM ~ active approach to maintaining ecological integrity • Conservative cutting approaches

    17. Contrasting Management Scenarios Custodial: reserve Commodity: timber production Active: ecological integrity

    18. Custodial Scenario • Objective: Reserve area • Method: Monitor • Practices: hazard tree removal along highway - cut 5% of trees 37m+ tall from stands adjacent to the highway

    19. Commodity Scenario • Objectives: Timber production / Area-regulated forest • Method: Even-aged intensive management • Practices: clearcut, overstory removal, commercial thinning, pre-commercial thinning, prescribed burning, planting

    20. Commodity Scenario:Stand Priority for Clearcuts • Relative density • Basal area • Merchantable bdft volume • Species composition - % of basal area in shade-tolerant species • Mortality/accretion ratio

    21. Commodity Scenario:Stand Priority for Commercial Thinning • Mortality/accretion ratio • Relative density • Species composition: % of basal area in shade-intolerant species • Age (after year 20) - younger stands with higher priority • Minimum 3000 bdft/acre

    22. Active Scenario • Objective: Ecological integrity • Method: Intensive partial cutting to direct structure and species composition • Practices: partial cuts (35% maxim), conversion cuts (70-75%), composition control cuts, prescribed burning, planting

    23. Management Zones for Active Scenario 6 zones Current forest condition Biophysical site Connectivity Disturbance regimes Social values

    24. Active Scenario LMZ Goals • Dry-Ridge: Open stands with WL, PP • Multi-Resource: Structurally diverse, older, mesic site tree species, reestablish western white pine • Ridge: Brushfields, scattered dry-site trees

    25. Active Scenario LMZ Goals • Old-growth: Connected zone of old-growth conditions - structurally diverse, large trees • Riparian: Functional, shade-intolerant trees • Scenic Corridor: Protect visuals, avoid hazards, shade-intolerant trees

    26. Active ScenarioPrescription Generalizations • Target shade-tolerant trees for cut • Retain western larch • Retain relict overstory trees • Decrease relative density • Plant shade-intolerant species • Avoid windthrow • Remove 20, 35, or 70% of basal area

    27. LMZ Prescription Matrix