### Metadata for DDRP v3 plants ### Run date and time: 08/08/2026 04:55 ### Model Species Parameters ### Species Abbrev: BRTE Full name: Cheatgrass Pest of: rangelands Overwintering stage: OL Degree-day calculation method: triangle Developmental threshold temperatures Seed lower devel threshold: 0 Seed upper devel threshold: 35 Seedling lower devel threshold: 0 Seedling upper devel threshold: 35 Flower lower devel threshold: 0 Flower upper devel threshold: 35 Mature lower devel threshold: 0 Mature upper devel threshold: 35 Stage durations in degree-days (DDs) Seed DDs: 1000 Seedling DDs 440 Flower DDs: 175 Mature DDs: 315 Pest Event Map parameters Number of generations to make Pest Event Maps (PEMs): 1 Seed event DDs and label: 50 (seed dormancy) Seedling event DDs and label: 220 (flowering) Flower event DDs and label: 175 (seed set) Mature event DDs and label: 315 (senescence) Climate stress parameters Lower cold stress threshold: -32 Upper heat stress threshold: 45 Max cold units (lower bound): 100 Max cold units (upper bound): 150 Max heat stress units (lower bound): 90 Max heat stress units (upper bound): 120 Dry stress threshold: 0.03 Max dry stress units (lower bound): 80 Max dry stress units (upper bound): 100 Wet stress threshold: 0.8 Max wet stress units (lower bound): 15 Max wet stress units (upper bound): 25 ### Model Input Parameters ### Start Year: 2026 Weather data for forecasts: PRISM Start day-of-year: 1 End day-of-year: 365 Region: CONUS Climate stress exclusion maps: 1 Soil moisture applied: 1 Pest Event Maps: 1 Seed Event Maps: 1 Seedling Event Maps: 1 Flower Event Maps: 1 Mature Event Maps: 1 Output_Dir: BRTE_cohorts Output option: 1 No. of cohorts: 7 Mean of end of OW stage (DDs): 555 Low bound of end of OW stage (DDs), xdist: 425 High bound of end of OW stage (DDs), ydist: 685 Variance in end of OW stage (DDs): 10000 Shape of distribution of end of OW stage (DDs): normal ### Durations (in degree-days) of stages in each of 7 cohorts ### "cohort" "OL" "F" "M" "S" "L" "relpopsize" 1 445 175 315 1000 440 0.099 2 482 175 315 1000 440 0.138 3 518 175 315 1000 440 0.169 4 555 175 315 1000 440 0.179 5 592 175 315 1000 440 0.169 6 628 175 315 1000 440 0.137 7 665 175 315 1000 440 0.099