Platte Plains, Michigan Quercus rubra - MI018 Additional Site Information Thomas C. Wyse, P. Charles Goebel Purpose of Collection: Forest disturbance history and recruitment patterns. Cores are stored at: Forest Ecosystem Restoration & Ecology School of Natural Resources OARDC The Ohio State University 1680 Madison Avenue Wooster, OH 44691-4096 Description: The site is a sandy lake plain adjacent to Lake Michigan in northwest lower Michigan. These cores were used with others to investigate forest disturbance history and recruitment patterns. All ring width measurements were done with WinDENDRO. Cores were visually cross dated, and the cross dating was verified with COFECHA. COFECHA File_name Date Time_span Series Spline Seg Lag N_Seg Probs Prob% XCorr MnSens C/Var MnMsmt MnStDv MnACorr mi018.rwl 25May06 1892 2002 13 32 50 25 43 0 .00 .666 .298 52.60 1.307 .590 .599 Run PQURO Title: Platte Plains QURU PART 5: CORRELATION OF SERIES BY SEGMENTS: Platte Plains QURU 13:46 Thu 25 May 2006 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 1900 1925 1950 1975 1949 1974 1999 2024 --- -------- --------- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- 1 10-1 1927 2002 .81 .82 .82 2 5-3 1917 2002 .70 .72 .66 .65 3 12-2 1931 2002 .67 .70 .70 4 27-3 1907 2002 .61 .66 .79 .79 5 25-2 1988 2002 .76 6 4-1 1941 2002 .45 .65 .72 7 18-2 1946 2002 .74 .72 .71 8 3-3 1938 2002 .61 .74 .73 9 7-1 1913 2002 .75 .79 .83 .83 10 26-2 1901 2002 .54 .61 .70 .70 11 45-1 1947 2002 .50 .52 .53 12 15-2 1924 2002 .68 .68 .44 .44 13 9-3 1892 2002 .56 .61 .61 .58 Av segment correlation .64 .65 .68 .69 PART 7: DESCRIPTIVE STATISTICS: Platte Plains QURU 13:46 Thu 25 May 2006 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 10-1 1927 2002 76 3 0 .823 1.63 4.06 .784 .645 .329 2.74 .536 -.042 1 2 5-3 1917 2002 86 4 0 .668 1.42 3.09 .450 .356 .265 2.66 .404 .026 1 3 12-2 1931 2002 72 3 0 .676 .83 3.60 .553 .683 .343 2.69 .517 -.073 1 4 27-3 1907 2002 96 4 0 .696 .84 2.76 .595 .776 .388 2.76 .418 .024 1 5 25-2 1988 2002 15 1 0 .764 2.03 3.30 .671 .511 .331 2.47 .801 -.144 1 6 4-1 1941 2002 62 3 0 .538 2.34 4.92 .864 .547 .264 2.71 .487 .021 1 7 18-2 1946 2002 57 3 0 .749 .87 1.78 .353 .608 .292 2.74 .592 .017 1 8 3-3 1938 2002 65 3 0 .646 1.70 4.04 .855 .777 .294 2.55 .606 -.033 5 9 7-1 1913 2002 90 4 0 .798 1.27 2.29 .419 .535 .263 2.88 .588 .066 1 10 26-2 1901 2002 102 4 0 .622 1.25 2.82 .443 .426 .268 2.91 .580 .025 1 11 45-1 1947 2002 56 3 0 .504 1.61 4.07 .761 .671 .313 2.56 .476 -.030 1 12 15-2 1924 2002 79 4 0 .635 1.41 3.55 .557 .646 .286 2.78 .580 -.004 1 13 9-3 1892 2002 111 4 0 .578 .88 5.87 .603 .621 .271 2.80 .503 -.039 1 --- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- -- Total or mean: 967 43 0 .666 1.31 5.87 .590 .599 .298 2.91 .526 -.004