Experimental Forest, Oregon - OR049 Additional Site Information James H. Speer and Thomas W. Swetnam Purpose of Collection: Ecology - insect outbreaks Detrend method: 40-year cubic smoothing spline Cores are stored at Laboratory of Tree-Ring Research, Tucson, AZ. This site was collected for a pandora moth outbreak study. We were able to demonstrate that much of the variance in the tree cores was explained by the effects of pandora moth defoliation, therefore, this chronology would not be useful for climate reconstruction. We used a 40-year cubic smoothing spline on the cores to remove long-term climate fluctuations and age trends. References: Speer, J.H. 1997. A dendrochronological record of pandora moth (Coloradia pandora, Blake) outbreaks in central Oregon. MS thesis, The Univeristy of Arizona. Tucson, 159pp. Speer, J.H., Swetnam, T.W., Wickman, B.E., and Youngblood, A., 2000. Changes in pandora moth outbreak dynamics during the past 622 years. Submitted to Ecology. COFECHA output: Chronology file name : OR049.CRN Measurement file name : OR049.RWL Date checked : 29MAR05 Checked by : H. ADAMS AND J. LUKAS Beginning year : 1334 Ending year : 1993 Principal investigators: James H. Speer and Thomas W. Swetnam Site name : Experimental Forest Site location : Oregon Species information : PIPO PONDEROSA PINE Latitude : +4343 Longitude : -12136 Elevation : 1530M Series intercorrelation: 0.547 Avg mean sensitivity : 0.206 Avg standard deviation : 0.438 Avg autocorrelation : 0.898 Number dated series : 24 Segment length tested : 50 Number problem segments: 33 Pct problem segments : 8.59 PART 5: CORRELATION OF SERIES BY SEGMENTS: or049.rwl 13:12 Tue 29 Mar 2005 Page 5 ------------------------------------------------------------------------------------------------------------------------------------ Correlations of 50-year dated segments, lagged 25 years Flags: A = correlation under .3281 but highest as dated; B = correlation higher at other than dated position Seq Series Time_span 1375 1400 1425 1450 1475 1500 1525 1550 1575 1600 1625 1650 1675 1700 1725 1750 1775 1800 1825 1850 1424 1449 1474 1499 1524 1549 1574 1599 1624 1649 1674 1699 1724 1749 1774 1799 1824 1849 1874 1899 --- -------- --------- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- 1 94EF01A3 1627 1993 .50 .55 .53 .42B .43 .51 .40 .29A .43 .55 2 94EF01B3 1658 1993 .67 .51 .51 .52 .61 .63 .52 .50 .46 3 94EF02A3 1696 1993 .25B .21B .37 .59 .65 .62 .59 .63 4 94EF02B3 1711 1993 .32A .33 .54 .67 .70 .74 .77 5 94EF03A3 1334 1993 .49 .46 .40 .53 .27B .34 .55 .51 .33A .44 .68 .70 .54 .48 .47 .54 .74 .65 .51 .60 6 94EF03B3 1381 1993 .49 .46 .43 .64 .32A .44 .80 .68 .49 .48 .61 .70 .66 .57 .45 .42 .58 .69 .63 .62 7 94EF04A3 1680 1993 .57 .65 .47 .38 .62 .72 .62 .57 8 94EF04B3 1680 1993 .38B .50 .59 .45 .56 .74 .63 .45 9 94EF05A3 1602 1993 .55 .58 .72 .70 .69 .43 .53 .81 .73 .60 .54 10 94EF05B3 1573 1993 .46 .51 .37B .59B .70 .56 .52 .44 .52 .75 .75 .55 .38 11 94EF06A3 1664 1993 .53B .45 .47B .40 .19B .42 .60 .58 .71 12 94EF06B3 1684 1993 .35B .50 .49 .59 .64 .56B .40B .50 13 94EF07A3 1454 1993 .66 .68 .69 .60 .48 .45 .65 .80 .68 .44 .23B .29A .53 .56 .56 .48 .50 14 94EF07B3 1475 1993 .54 .64 .51 .55 .62 .73 .79 .63 .59 .64 .60 .45 .55 .50 .35 .44 15 94EF08A3 1471 1993 .65 .64 .57 .51 .51 .44 .62 .74 .73 .56 .56 .56 .49 .55 .64 .60 .64 16 94EF08B3 1453 1993 .74 .75 .66 .57 .50 .55 .55 .50 .63 .66 .62 .57 .64 .78 .77 .64 .58 17 94EF09A3 1707 1993 .46 .58 .72 .84 .82 .58 .39 18 94EF09B3 1723 1993 .60 .61 .59 .74 .86 .74 .60 19 94EF10A3 1610 1993 .67 .70 .64 .66 .63 .34 .40 .72 .73 .45 .44 20 94EF10B3 1590 1993 .64 .59 .62 .66 .70 .58 .34 .37 .49 .44B .34B .42 21 94EF11A3 1548 1993 .23B .24B .34 .43 .62 .77 .56 .53 .45 .44 .56 .59 .55 .56 22 94EF11B3 1546 1993 .65 .59 .50 .47 .61 .77 .64 .54 .51 .57 .60 .47 .52 .58 23 94EF12A3 1552 1990 .44 .57 .59 .77 .77 .61 .60 .55 .50 .49 .58 .63 .63 24 94EF12B3 1591 1990 .36 .43 .74 .74 .64 .64 .58 .51 .68 .73 .57 .50 Av segment correlation .49 .46 .42 .64 .53 .56 .55 .50 .48 .54 .66 .68 .55 .52 .47 .50 .63 .64 .55 .54 PART 5: CORRELATION OF SERIES BY SEGMENTS: or049.rwl 13:12 Tue 29 Mar 2005 Page 6 ------------------------------------------------------------------------------------------------------------------------------------ Correlations of 50-year dated segments, lagged 25 years Flags: A = correlation under .3281 but highest as dated; B = correlation higher at other than dated position Seq Series Time_span 1875 1900 1925 1950 1924 1949 1974 1999 --- -------- --------- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- 1 94EF01A3 1627 1993 .46 .46 .54 .67 2 94EF01B3 1658 1993 .44 .55 .54 .47 3 94EF02A3 1696 1993 .63 .59 .58 .68 4 94EF02B3 1711 1993 .67 .59 .68 .85 5 94EF03A3 1334 1993 .71 .51 .45 .62 6 94EF03B3 1381 1993 .55 .30A .17B .63 7 94EF04A3 1680 1993 .57 .51 .50 .69 8 94EF04B3 1680 1993 .43 .42B .24B .38 9 94EF05A3 1602 1993 .47 .27B .37 .51 10 94EF05B3 1573 1993 .46 .50 .46 .60 11 94EF06A3 1664 1993 .70 .46 .51 .61 12 94EF06B3 1684 1993 .69 .49 .28A .59 13 94EF07A3 1454 1993 .58 .39 .27A .64 14 94EF07B3 1475 1993 .56 .47 .50 .66 15 94EF08A3 1471 1993 .58 .56 .54 .36 16 94EF08B3 1453 1993 .48 .51 .58 .58 17 94EF09A3 1707 1993 .35 .56 .39 .60 18 94EF09B3 1723 1993 .53 .56 .66 .76 19 94EF10A3 1610 1993 .41 .36 .60 .52 20 94EF10B3 1590 1993 .53 .46 .32A .40 21 94EF11A3 1548 1993 .64 .53 .37 .20B 22 94EF11B3 1546 1993 .55 .60 .53 .33 23 94EF12A3 1552 1990 .57 .56 .40 .49B 24 94EF12B3 1591 1990 .53 .68 .51 .71 Av segment correlation .55 .50 .46 .57 PART 7: DESCRIPTIVE STATISTICS: or049.rwl 13:12 Tue 29 Mar 2005 Page 9 ------------------------------------------------------------------------------------------------------------------------------------ Corr //-------- Unfiltered --------\\ //---- Filtered -----\\ No. No. No. with Mean Max Std Auto Mean Max Std Auto AR Seq Series Interval Years Segmt Flags Master msmt msmt dev corr sens value dev corr () --- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- -- 1 94EF01A3 1627 1993 367 14 2 .483 .88 2.47 .483 .880 .218 2.57 .351 -.017 1 2 94EF01B3 1658 1993 336 13 0 .536 1.02 2.62 .537 .887 .200 2.61 .370 -.009 1 3 94EF02A3 1696 1993 298 12 2 .562 1.18 4.09 .735 .948 .169 2.63 .427 -.036 1 4 94EF02B3 1711 1993 283 11 1 .640 1.13 4.03 .789 .948 .163 2.45 .282 -.048 1 5 94EF03A3 1334 1993 660 24 2 .505 .51 2.29 .404 .938 .197 2.49 .247 .008 5 6 94EF03B3 1381 1993 613 24 3 .537 .51 2.50 .387 .917 .206 2.65 .328 -.010 1 7 94EF04A3 1680 1993 314 12 0 .600 1.04 2.92 .655 .899 .207 2.49 .288 -.041 1 8 94EF04B3 1680 1993 314 12 3 .456 .76 2.55 .504 .917 .199 2.52 .359 -.012 1 9 94EF05A3 1602 1993 392 15 1 .565 .72 1.62 .293 .870 .167 2.71 .428 .021 2 10 94EF05B3 1573 1993 421 17 2 .530 .69 2.03 .321 .881 .175 2.56 .348 -.008 1 11 94EF06A3 1664 1993 330 13 3 .515 1.09 2.81 .627 .919 .201 2.52 .361 -.002 1 12 94EF06B3 1684 1993 310 12 4 .524 1.09 2.65 .706 .932 .183 2.49 .325 -.002 2 13 94EF07A3 1454 1993 540 21 3 .553 .63 2.18 .372 .898 .207 2.56 .304 .008 1 14 94EF07B3 1475 1993 519 20 0 .561 .53 1.96 .397 .940 .229 2.61 .302 -.019 1 15 94EF08A3 1471 1993 523 21 0 .546 .63 2.27 .373 .861 .265 2.57 .330 .001 1 16 94EF08B3 1453 1993 541 21 0 .622 .63 1.96 .352 .892 .228 2.62 .278 .043 1 17 94EF09A3 1707 1993 287 11 0 .588 1.22 2.49 .500 .894 .166 2.46 .307 .024 1 18 94EF09B3 1723 1993 271 11 0 .680 1.30 2.75 .489 .863 .163 2.66 .372 .051 1 19 94EF10A3 1610 1993 384 15 0 .533 .49 1.57 .217 .831 .222 2.46 .253 -.006 1 20 94EF10B3 1590 1993 404 16 3 .494 .43 1.20 .198 .846 .239 2.69 .330 .012 1 21 94EF11A3 1548 1993 446 18 3 .438 .80 2.39 .417 .889 .210 2.66 .363 .026 1 22 94EF11B3 1546 1993 448 18 0 .549 .60 1.68 .319 .883 .233 2.55 .263 .031 1 23 94EF12A3 1552 1990 439 17 1 .579 .79 2.72 .440 .904 .208 2.57 .342 -.045 1 24 94EF12B3 1591 1990 400 16 0 .600 .86 2.91 .544 .909 .210 2.52 .276 .003 1 --- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- -- Total or mean: 9840 384 33 .547 .76 4.09 .438 .898 .206 2.71 .322 .000