Good Harbor Plains, Michigan Acer - MI011 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 mi011.rwl 25May06 1892 2002 11 32 50 25 44 2 4.55 .499 .320 50.80 1.322 .667 .665 Run GACRU Title: Good Harbor Plains ACRU PART 5: CORRELATION OF SERIES BY SEGMENTS: Good Harbor Plains ACRU 13:34 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 92-2 1917 2002 .40 .42 .66 .63 2 95-2 1893 2002 .60 .67 .71 .60 .56 3 73-2 1911 2002 .50 .69 .52 .47 4 93-2 1898 2002 .54 .59 .74 .54 .52 5 14-2 1897 2002 .75 .77 .40 .06B .04B 6 99-4 1918 2002 .68 .68 .56 .54 7 58-1 1931 2002 .47 .52 .52 8 62-2 1938 2002 .50 .51 .52 9 95-3 1892 2002 .56 .58 .54 .46 .49 10 91-2 1907 2002 .37 .53 .57 .58 11 62-1 1951 2002 .54 .53 Av segment correlation .61 .57 .57 .50 .49 PART 7: DESCRIPTIVE STATISTICS: Good Harbor Plains ACRU 13:34 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 92-2 1917 2002 86 4 0 .460 .86 2.24 .490 .717 .289 2.75 .487 -.042 1 2 95-2 1893 2002 110 5 0 .580 1.77 4.40 .715 .641 .274 2.73 .510 -.055 1 3 73-2 1911 2002 92 4 0 .475 1.16 2.92 .621 .653 .328 2.87 .492 -.017 1 4 93-2 1898 2002 105 5 0 .514 .96 2.96 .639 .766 .399 2.67 .463 -.034 1 5 14-2 1897 2002 106 5 2 .388 1.41 3.56 .696 .666 .277 2.67 .521 .010 1 6 99-4 1918 2002 85 4 0 .611 .97 2.75 .604 .653 .334 2.78 .601 .069 1 7 58-1 1931 2002 72 3 0 .454 1.79 3.94 .856 .606 .311 2.64 .450 .016 1 8 62-2 1938 2002 65 3 0 .486 1.90 4.28 .911 .725 .265 2.72 .547 -.014 1 9 95-3 1892 2002 111 5 0 .521 1.40 2.60 .526 .626 .265 2.69 .454 -.013 1 10 91-2 1907 2002 96 4 0 .464 .96 3.13 .562 .472 .485 2.84 .574 -.034 1 11 62-1 1951 2002 52 2 0 .537 1.67 3.64 .969 .913 .246 2.59 .503 .020 1 --- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- -- Total or mean: 980 44 2 .499 1.32 4.40 .667 .665 .320 2.87 .508 -.012