Platte Plains, Michigan Quercus alba - MI016 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 mi016.rwl 25May06 1888 2002 9 32 50 25 36 1 2.78 .652 .330 53.13 1.390 .598 .519 Run PQUAL Title: Platte Plains QUAL PART 5: CORRELATION OF SERIES BY SEGMENTS: Platte Plains QUAL 13:42 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 1875 1900 1925 1950 1975 1924 1949 1974 1999 2024 --- -------- --------- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- 1 38-3 1898 2002 .68 .66 .72 .81 .80 2 38-3 1898 2002 .68 .66 .72 .81 .80 3 33-2 1911 2002 .66 .69 .70 .67 4 47-1 1921 2002 .77 .76 .74 .74 5 32-2 1888 2002 .60 .58 .72 .72 .71 6 41-2 1911 2002 .50 .64 .65 .64 7 48-2 1940 2002 .61 .72 .76 8 13-2 1930 2002 .32B .57 .52 9 48-4 1940 2002 .75 .75 .74 Av segment correlation .65 .64 .66 .72 .71 PART 7: DESCRIPTIVE STATISTICS: Platte Plains QUAL 13:42 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 38-3 1898 2002 105 5 0 .734 1.35 2.79 .433 .553 .254 2.63 .584 .052 1 2 38-3 1898 2002 105 5 0 .734 1.35 2.79 .433 .553 .254 2.63 .584 .052 1 3 33-2 1911 2002 92 4 0 .674 1.71 4.74 .904 .570 .360 2.65 .502 -.026 1 4 47-1 1921 2002 82 4 0 .755 1.41 3.30 .596 .595 .306 2.76 .535 .043 1 5 32-2 1888 2002 115 5 0 .639 1.60 3.98 .693 .523 .359 2.54 .497 -.057 1 6 41-2 1911 2002 92 4 0 .568 1.45 3.89 .751 .453 .380 2.74 .507 .062 1 7 48-2 1940 2002 63 3 0 .611 1.01 2.24 .439 .482 .360 2.57 .514 .000 1 8 13-2 1930 2002 73 3 1 .395 1.17 2.41 .429 .403 .311 2.55 .470 -.048 1 9 48-4 1940 2002 63 3 0 .702 1.19 2.75 .658 .492 .432 2.84 .582 .084 1 --- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- -- Total or mean: 790 36 1 .652 1.39 4.74 .598 .519 .330 2.84 .531 .017