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Reconstructed WSBW outbreaks Interval Duration No. yrs (sd) Trees Site

Reconstructed WSBW outbreaks Interval Duration No. yrs (sd) Trees Site ALC 39 (23) 12.8 17.0 DMJ 44 (20) 15.5 20.0 FRN 45 (23) 15.4 20.9 JCK 44 (24) 12.5 18.8 LIM 39 (16) 13.5 19.6 LKB 32 (19) 12.5 15.8 MCK 34 (20) 12.7 17.3 PAL 36 (10) 11.9 13.5

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Reconstructed WSBW outbreaks Interval Duration No. yrs (sd) Trees Site

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  1. Reconstructed WSBW outbreaks Interval Duration No. yrs (sd) Trees Site ALC 39 (23) 12.8 17.0 DMJ 44 (20) 15.5 20.0 FRN 45 (23) 15.4 20.9 JCK 44 (24) 12.5 18.8 LIM 39 (16) 13.5 19.6 LKB 32 (19) 12.5 15.8 MCK 34 (20) 12.7 17.3 PAL 36 (10) 11.9 13.5 PTR 36 (10) 13.2 16.5 SMT 33 (12) 11.8 17.8 TRL 59 (28) 15.9 23.8

  2. RIO GRANDE vs northern NEW MEXICO RioGr nNM Duration 10-13 20 Interval 24 & 84 25 Synchrony high moderate Wet/dry wet wet Show similar patterns pre1900, growing dissimilar during the last century

  3. OUTBREAK PERIODS 1650 1657 1671 1685 1689 1703 1715 1735 1753 1778 1785 1805 1810 1824 1825 1846 1849 1876 1881 1898 1903 1932 1936 1952 1960 1977 1984 1997 3 4 4

  4. OUTBREAK PERIODS • Rio Grande n New Mexico • 1650 1657 • 1671 1685 • 1689 1703 • 1715 1735 1710 1735 • 1753 1778 1745 1775 • 1785 1805 1790 1840 • 1824 • 1825 1846 • 1849 1876 1850 1860 • 1870 1880 • 1881 1898 1885 1900 • 1903 1932 1910 1925 • 1936 1952 1940 1965 • 1977 • 1975 1985 • 1984 1997

  5. Northern New Mexico (Santa Fe & Carson) Rio Grande N.F.

  6. Northern New Mexico (Santa Fe & Carson) Rio Grande N.F.

  7. GENERAL CONDITIONS CONDUCIVE TO MORE SEVERE BUDWORM IMPACT STAND SITE Multi-storied canopy Warm High density Dry High proportion of host species High proportion of white fir Biotic & abiotic stress

  8. CONCLUSIONS High degree of synchrony Peaks on average every 24 yrs Larger peaks every 83 yrs WSBW activity corresponds to wet periods WSBW activity occurs during periods of above-normal growth 20th century outbreaks were short

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