1. Forest Management Service Center Providing Biometric Services to the National Forest System Program Emphasis: We provide products and technical support for forest vegetation modeling and forest product measurements to the National Forests and our partners.

2. Biometric: Support Areas  Forest Products Measurement  develops and applies practical and efficient methods of timber cruising, scaling, volume and biomass estimation, and area determination  Forest Vegetation Modeling  enhances, maintains and supports the Forest Vegetation Simulator (FVS), a nationally supported framework for growth and yield modeling

3. Geographic Variants of FVS  Represent species commonly found in a geographic region  Local Data are used to create models that predict tree growth, mortality, and regeneration Under development

4. Stand Inventory Data  Location  Ecological Code: Ecoregion, Plant Assoc, Habtype  Slope  Aspect  Elevation  Site Index  Carrying Capacity (Max SDI/MaxBA)  Species  DBH  Height (total)  Crown Ratio  Past Growth Increment  Tree Count (from inventory design) Stand /Site ConditionsTree Characteristics

5. FVS is a distance-independent individual tree growth model comprised of empirical equations that predict diameter and height growth, crown change and mortality of individual trees over time. + 50 yrsFVS Inventory+ 100 yrs Forest Vegetation Simulator

6. FVS Extensions  Models that interact with base FVS variants  Simulate the effects of various ecological disturbances  Insects and diseases  Fire and Fuels (FFE)  Climate change

7. FVS Growth and Yield Modeling  Projects single or multiple stands in a single simulation  Models stand development with and without taking into consideration forest health concerns  Simulates common and user-defined management actions  thinning methods  regeneration methods  fuels and fire management

8. FVS-WRENSS Water Yield Post-Processor for FVS Calculates Water Yield Based on: WRENSS Regional Evapotranspiration Relationships Stand Elevation, Aspect, Forest Type FVS-Simulated Stand Density Dynamics Monthly Precipitation Data WRENSS - An Approach to Water Resources Evaluation of Non-Point Silvicultural Sources, Forest Service, USDA, EPA-IAG-D6-0660, 1980

10. FVS-WRENSS Processing Flow Chart FVS Output Parse the FVS main output (.out) file Vegetative Data WRENSS Precip. Data Water Yield Output Hydrologic Parameters

11. FVS-WRENSS Summary INPUT ANNUAL PRECIP.= 18.50 STAND ID= 0213011024050002 YEAR EFF. PRECIP. ET YIELD CHANGE BA F-TYPE 2010 17.715 13.259 4.456 0.000 133. 5 2020 17.600 13.485 4.115 0.000 153. 5 2030 18.110 12.531 5.580 1.892 66. 5 2040 18.075 12.602 5.472 0.000 72. 5 2050 18.033 12.686 5.347 0.000 79. 5 2060 17.984 12.786 5.198 0.000 87. 5 2070 17.928 12.898 5.030 0.000 96. 5 2080 17.872 12.997 4.876 0.000 105. 5 2090 17.810 13.101 4.709 0.000 115. 5 2100 17.747 13.205 4.541 0.000 125. 5 2110 17.692 13.296 4.397 0.000 134. 5

12. Alternate Management Scenarios 1) No Treatment 2) Thin from 0 – 16 inches DBH in 2030 3) Prescribed Fire in 2030 Initial Stand Composition ponderosa pine Douglas fir Gambel oak

14. FVS-WRENSS - Water Yield Postprocessor for FVS Robert Havis, FVS Staff