Good Harbor Plains, Michigan Populus - MI012 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 mi012.rwl 25May06 1890 2002 5 32 50 25 18 0 .00 .467 .315 47.49 1.392 .713 .653 Run GPPGR Title: Good Harbor Plains PPGR PART 5: CORRELATION OF SERIES BY SEGMENTS: Good Harbor Plains PPGR 13:36 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 86-1 1939 2002 .46 .51 .43 2 68-1 1909 2002 .62 .55 .51 .45 3 82-2 1926 2002 .60 .61 .61 4 50-1 1906 2002 .39 .37 .47 .48 5 83-2 1890 2002 .35 .42 .41 .40 Av segment correlation .45 .48 .50 .47 PART 7: DESCRIPTIVE STATISTICS: Good Harbor Plains PPGR 13:36 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 86-1 1939 2002 64 3 0 .404 2.55 4.57 .957 .649 .267 2.81 .521 .022 1 2 68-1 1909 2002 94 4 0 .529 2.22 7.49 1.342 .795 .291 2.58 .432 -.023 2 3 82-2 1926 2002 77 3 0 .621 .91 2.52 .447 .528 .334 2.84 .478 -.041 1 4 50-1 1906 2002 97 4 0 .426 1.10 2.77 .608 .580 .381 2.75 .482 .006 1 5 83-2 1890 2002 113 4 0 .370 .63 1.54 .322 .684 .293 2.73 .476 .012 1 --- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- -- Total or mean: 445 18 0 .467 1.39 7.49 .713 .653 .315 2.84 .475 -.004