Diamond Lake, Oregon - OR054 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 : OR054.CRN Measurement file name : OR054.RWL Date checked : 29MAR05 Checked by : H. ADAMS AND J. LUKAS Beginning year : 1513 Ending year : 1995 Principal investigators: James H. Speer and Thomas W. Swetnam Site name : Diamond Lake Site location : Oregon Species information : PIPO PONDEROSA PINE Latitude : +4305 Longitude : -12157 Elevation : 1510M Series intercorrelation: 0.471 Avg mean sensitivity : 0.191 Avg standard deviation : 0.573 Avg autocorrelation : 0.896 Number dated series : 20 Segment length tested : 50 Number problem segments: 57 Pct problem segments : 18.63 PART 5: CORRELATION OF SERIES BY SEGMENTS: or054.rwl 13:13 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 1500 1525 1550 1575 1600 1625 1650 1675 1700 1725 1750 1775 1800 1825 1850 1875 1900 1925 1950 1549 1574 1599 1624 1649 1674 1699 1724 1749 1774 1799 1824 1849 1874 1899 1924 1949 1974 1999 --- -------- --------- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- 1 DLK02B 1730 1990 .29A .42 .54 .28A .07B .36B .63 .60 .35 .28A 2 DLK05A 1521 1995 .39 .34B .45 .48 .48 .50 .58 .58 .39 .31B .48 .62 .59 .55 .55 .59 .46 .27B .24A 3 DLK05B 1580 1995 .28B .47 .59 .78 .66 .58 .46 .40 .49 .60 .56 .62 .65 .57 .56 .66 4 DLK05C 1548 1995 .39 .38 .33 .41 .53 .63 .54 .38 .41B .57 .51 .51 .57 .61 .47 .30A .46 .34 5 DLK06A 1704 1995 .30A .62 .50 .47 .54 .45 .50 .49 .24B .20B .30A 6 DLK06B 1673 1995 .18B .20B .42 .53 .46 .36 .36 .47 .37 .33 .41 .60 .63 7 DLK06C 1776 1995 .42 .50 .63 .60 .63 .58 .51 .60 8 DLK07A 1517 1995 .66 .69 .63 .37 .39B .53 .55 .57 .48 .46 .48 .45 .58 .49 .51 .51 .37 .55 .54 9 DLK07B 1515 1995 .78 .81 .48B .14B .37 .63 .68 .54 .55 .63 .61 .53 .54 .41 .27B .45 .44 .37 .39 10 DLK07C 1519 1995 .68 .69 .61 .37 .43 .55 .65 .58 .42B .33 .41 .38 .35 .42B .54 .60 .62 .61 .41 11 DLK08A 1513 1995 .44 .37 .38 .29A .49 .80 .73 .50 .47 .44 .48 .61 .45 .43 .45 .49 .42 .20B .26A 12 DLK08B 1543 1995 .39 .40 .35 .47 .71 .79 .59 .50 .46 .43 .39 .46 .52 .30B .28A .29A .07B .32A 13 DLK09A 1587 1995 .26A .29B .59 .69 .61 .59 .50 .53 .57 .53 .57 .70 .59 .43 .22B .37B 14 DLK09B 1638 1995 .26A .16B .32A .40 .44 .54 .52 .37 .35 .53 .54 .44 .33A .52 15 DLK10A 1583 1995 .29A .38 .64 .79 .51 .54 .74 .55 .42 .58 .61 .60 .58 .44 .26B .36B 16 DLK10B 1571 1995 .19A .11B .23B .60 .62 .57 .52 .53 .50 .46 .58 .54 .59 .52 .32A .40 .41 17 DLK11A 1602 1995 .42 .62 .71 .67 .65 .50 .47 .40 .26B .26B .57 .53 .20B .33B .44B 18 DLK11B 1584 1995 .43 .42 .54 .64 .50 .35 .51 .56 .31B .15B .26A .48 .49 .41 .16B .36 19 DLK12A 1677 1995 .37 .46 .47 .58 .76 .52 .40 .68 .78 .66 .57 .38 20 DLK12B 1706 1995 .38 .55 .65 .64 .48 .33B .49 .65 .62 .60 .59 Av segment correlation .59 .53 .44 .31 .40 .58 .61 .52 .46 .48 .51 .49 .46 .44 .52 .54 .44 .38 .42 PART 7: DESCRIPTIVE STATISTICS: or054.rwl 13:13 Tue 29 Mar 2005 Page 8 ------------------------------------------------------------------------------------------------------------------------------------ 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 DLK02B 1730 1990 261 10 5 .362 1.35 2.65 .495 .748 .214 2.58 .416 -.040 4 2 DLK05A 1521 1995 475 19 4 .459 .80 3.77 .655 .929 .198 2.61 .317 .007 1 3 DLK05B 1580 1995 416 16 1 .535 .76 3.87 .650 .956 .178 2.53 .348 -.016 2 4 DLK05C 1548 1995 448 18 2 .454 .78 3.52 .677 .929 .204 2.62 .411 -.040 2 5 DLK06A 1704 1995 292 11 4 .414 1.42 3.22 .541 .842 .174 2.55 .361 -.007 2 6 DLK06B 1673 1995 323 13 2 .393 1.27 2.78 .511 .778 .199 2.63 .363 -.001 1 7 DLK06C 1776 1995 220 8 0 .561 1.72 4.53 .831 .889 .183 2.64 .376 -.017 1 8 DLK07A 1517 1995 479 19 1 .513 .89 3.14 .589 .913 .189 2.78 .435 .014 1 9 DLK07B 1515 1995 481 19 3 .503 .86 2.80 .526 .914 .199 2.66 .367 .010 1 10 DLK07C 1519 1995 477 19 2 .494 .71 1.80 .332 .916 .151 2.63 .446 -.018 2 11 DLK08A 1513 1995 483 19 3 .437 .90 3.92 .545 .904 .176 2.56 .370 -.037 1 12 DLK08B 1543 1995 453 18 5 .431 .95 3.16 .562 .933 .174 2.56 .372 -.020 1 13 DLK09A 1587 1995 409 16 4 .499 .94 3.39 .536 .925 .155 2.62 .318 -.018 2 14 DLK09B 1638 1995 358 14 4 .441 .53 1.53 .268 .893 .193 2.67 .375 -.032 3 15 DLK10A 1583 1995 413 16 3 .502 .97 3.76 .637 .920 .205 2.45 .302 -.023 1 16 DLK10B 1571 1995 425 17 4 .469 1.00 3.36 .509 .876 .213 2.62 .327 -.016 1 17 DLK11A 1602 1995 394 15 5 .467 .90 4.14 .641 .868 .220 2.58 .440 .004 1 18 DLK11B 1584 1995 412 16 4 .414 .99 4.23 .821 .910 .235 2.57 .319 -.005 1 19 DLK12A 1677 1995 319 12 0 .522 1.22 2.88 .563 .878 .177 2.65 .436 -.047 2 20 DLK12B 1706 1995 290 11 1 .536 1.41 3.72 .662 .855 .186 2.74 .429 .002 1 --- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- -- Total or mean: 7828 306 57 .471 .97 4.53 .573 .896 .191 2.78 .375 -.014