Duquette General Store QURU, Minnesota - MN032 Additional Site Information E.R. Larson G.P. Elliott Reference: Grant P. Elliott and Evan R. Larson. 2009. Disturbance and Successional Dynamics in an Old-Growth White Pine-Mixed Hardwood Forest in the Great Lakes Region of Minnesota. Geographical Bulletin, Vol. 50, No. 1, pp. 17-35, MAy 2009. Notes: These data were collected as part of a study documenting forest dynamics in a small, unlogged stand of white pine outside of Duquette, Minnesota. The trees in this collection were cored following a targeted sampling protocol intentionally seeking the oldest trees in the stand. Keywords: Pinus strobus, white pine, ring width, forest dynamics COFECHA output: Chronology file name : MN032.CRN Measurement file name : MN032.RWL Date checked : 12JUL21 Checked by : B. Bauer Beginning year : 1813 Ending year : 2006 Principal investigators: E.R. Larson G.P. Elliott Site name : Duquette General Store Site location : Minnesota Species information : QURU RED OAK Latitude : 4622 Longitude : -09233 Elevation : 349M Series intercorrelation: 0.625 Avg mean sensitivity : 0.195 Avg standard deviation : 0.666 Avg autocorrelation : 0.751 Number dated series : 19 Segment length tested : 50 Number problem segments: 1 Pct problem segments : 0.98 PART 5: CORRELATION OF SERIES BY SEGMENTS: Duquette General Store QURU 12:02 Mon 12 Jul 2021 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 1825 1850 1875 1900 1925 1950 1975 1874 1899 1924 1949 1974 1999 2024 --- -------- --------- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- 1 DGS901b 1891 2006 .69 .76 .70 .65 .52 2 DGS903A 1908 2006 .72 .70 .68 .63 3 DGS903b 1813 2006 .42 .65 .72 .74 .79 .81 .78 4 DGS904a 1925 2006 .77 .68 .60 5 DGS904b 1910 2006 .79 .83 .78 .71 6 DGS906a 1910 2005 .77 .76 .78 .74 7 DGS906b 1830 2005 .42 .58 .76 .79 .71 .75 .66 8 DGS907a 1916 2005 .75 .76 .72 .68 9 DGS907b 1917 2005 .73 .73 .56 .44 10 DGS908a 1887 2005 .64 .61 .46 .52 .58 11 DGS908b 1840 2005 .67 .67 .72 .74 .55 .47 .44 12 DGS910a 1874 2005 .74 .73 .71 .74 .71 .63 13 DGS910b 1865 2005 .40 .46 .69 .77 .70 .64 14 DGS911a 1852 2005 .56 .69 .73 .68 .62 .61 15 DGS911b 1872 2005 .69 .70 .70 .76 .75 .75 16 DGS141 1852 2006 .49 .67 .56 .64 .72 .64 17 DGS144 1865 2006 .38 .58 .56 .43 .44 .47 18 DGS201 1850 2006 .23B .63 .56 .54 .73 .66 19 DGScab 1852 2006 .57 .78 .69 .52 .72 .71 Av segment correlation .50 .54 .67 .70 .68 .67 .63 PART 7: DESCRIPTIVE STATISTICS: Duquette General Store QURU 12:02 Mon 12 Jul 2021 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 DGS901b 1891 2006 116 5 0 .639 1.71 3.23 .538 .751 .173 2.88 .522 -.033 2 2 DGS903A 1908 2006 99 4 0 .661 2.62 4.92 .801 .610 .202 2.65 .494 .061 1 3 DGS903b 1813 2006 194 7 0 .631 1.51 4.36 .888 .894 .200 2.64 .360 .021 1 4 DGS904a 1925 2006 82 3 0 .688 3.14 5.28 .972 .640 .238 2.47 .461 -.004 2 5 DGS904b 1910 2006 97 4 0 .748 2.49 4.83 .925 .724 .221 2.60 .460 .100 1 6 DGS906a 1910 2005 96 4 0 .752 2.34 3.78 .651 .685 .188 2.69 .483 -.012 1 7 DGS906b 1830 2005 176 7 0 .607 1.52 3.60 .556 .758 .203 2.69 .426 -.017 1 8 DGS907a 1916 2005 90 4 0 .718 2.33 3.80 .580 .565 .182 2.60 .548 -.007 1 9 DGS907b 1917 2005 89 4 0 .566 2.43 4.42 .878 .774 .178 2.57 .426 -.059 1 10 DGS908a 1887 2005 119 5 0 .591 1.46 2.65 .397 .670 .168 2.68 .472 -.052 1 11 DGS908b 1840 2005 166 7 0 .603 1.62 3.25 .522 .761 .176 2.53 .381 -.022 1 12 DGS910a 1874 2005 132 6 0 .708 1.90 3.60 .546 .711 .169 2.61 .434 -.019 2 13 DGS910b 1865 2005 141 6 0 .556 2.16 4.03 .753 .802 .176 2.56 .386 -.040 2 14 DGS911a 1852 2005 154 6 0 .626 1.44 2.67 .489 .771 .190 2.56 .401 -.020 2 15 DGS911b 1872 2005 134 6 0 .724 1.73 3.36 .582 .761 .177 2.63 .466 -.059 2 16 DGS141 1852 2006 155 6 0 .597 1.39 3.97 .990 .917 .224 2.51 .385 -.045 2 17 DGS144 1865 2006 142 6 0 .456 1.29 2.76 .468 .739 .206 2.71 .412 -.029 1 18 DGS201 1850 2006 157 6 1 .512 1.59 3.26 .787 .835 .235 2.64 .431 -.029 2 19 DGScab 1852 2006 155 6 0 .646 1.85 3.01 .504 .630 .190 2.47 .350 -.022 1 --- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- -- Total or mean: 2494 102 1 .625 1.83 5.28 .666 .751 .195 2.88 .427 -.017