Laurel Falls Trail, Tenessee - TN011 Additional Site information Stahle, D.W., M.K. Cleaveland, M.D. Therrell, D.A. Gay, P.J. Young and W. Blozan Stahle et al American Chestnut Chronologies Files NC010*-NC011* and TN011*-TN015* Reference Stahle, D.W., M.K. Cleaveland, M.D. Therrell, D.A. Gay, P.J. Young and W. Blozan. Submitted. A Retrospective Dendroecology of American Chestnut. Ecological Monographs, 1999. Detrending is double, with the first option being an exponential. If the exponential is fit, a spline with half power cutoff equal to the length of the series is then used detrend the 1st set of indices. If the exponential cannot be fit, then a regression line is fit, and a spline with stiffness equal to 67% of the series length is fit. In no case is a spline with stiffness specification less than 100 yrs fit. Indices are computed as the ratio of measurement to fitted curve. Multivariate autoregressive modeling, with model order initially chosen by Akaike Info Criterion(AIC) minimum, gives the pooled model. If the AIC first minimum is inadequate, the model order can be specified. The individual series are each modeled with the pooled model and the individual residual series are averaged to derive the residual chronology. If the residual chronology still contains an unacceptable amount of persistence, it is rewhitened. The variance of each chronology is detrended with a cubic spline of stiffness equal to the chronology length. COFECHA output: Chronology file name : TN011.CRN Measurement file name : TN011.RWL Date checked : 06APR05 Checked by : H. ADAMS AND J. LUKAS Beginning year : 1761 Ending year : 1929 Principal investigators: J.Young, W.Blozan Site name : Laurel Falls Trail Site location : Tennessee Species information : CADN AMERICAN CHESTNUT Latitude : 3541 Longitude : -08337 Elevation : 1095M Series intercorrelation: 0.556 Avg mean sensitivity : 0.159 Avg standard deviation : 0.805 Avg autocorrelation : 0.741 Number dated series : 16 Segment length tested : 50 Number problem segments: 2 Pct problem segments : 3.57 PART 5: CORRELATION OF SERIES BY SEGMENTS: tn011.rwl 13:41 Wed 06 Apr 2005 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 1775 1800 1825 1850 1875 1900 1824 1849 1874 1899 1924 1949 --- -------- --------- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- 1 LFC01A 1801 1913 .42 .53 .63 .67 2 LFC01B 1802 1911 .45 .51 .60 .57 3 LFC01C 1800 1911 .66 .66 .72 .76 4 LFC02A 1817 1874 .49 .55 5 LFC02B 1811 1912 .48 .55 .66 .65 6 LFC05A 1814 1904 .39 .58 .68 .64 7 LFC05B 1819 1901 .51 .65 .82 .81 8 LFC07A 1782 1898 .51 .45 .42 .57 9 LFC08A 1861 1920 .59 .58 10 LFC08B 1861 1917 .37 .44 11 LFC10B 1867 1908 .40 12 LFT01A 1815 1894 .57 .64 .71 13 LFT02A 1761 1918 .46 .58 .71 .76 .67 14 LFT02B 1813 1924 .58 .55 .58 .57 15 LFT03A 1832 1929 .55 .66 .66 .65 16 LFT04A 1820 1926 .29A .31A .54 .60 .59 Av segment correlation .48 .49 .56 .62 .64 .62 PART 7: DESCRIPTIVE STATISTICS: tn011.rwl 13:41 Wed 06 Apr 2005 Page 6 ------------------------------------------------------------------------------------------------------------------------------------ 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 LFC01A 1801 1913 113 4 0 .534 2.26 4.06 .819 .826 .157 2.80 .472 -.115 2 2 LFC01B 1802 1911 110 4 0 .511 2.43 4.53 .858 .827 .164 2.62 .424 .014 2 3 LFC01C 1800 1911 112 4 0 .696 2.12 3.45 .567 .817 .133 2.77 .564 -.002 1 4 LFC02A 1817 1874 58 2 0 .486 3.48 5.91 .913 .614 .186 2.51 .447 -.014 2 5 LFC02B 1811 1912 102 4 0 .541 2.34 3.95 .553 .290 .218 2.58 .412 -.004 2 6 LFC05A 1814 1904 91 4 0 .516 3.27 7.13 1.005 .632 .202 2.61 .507 -.006 1 7 LFC05B 1819 1901 83 4 0 .678 2.23 6.22 .950 .748 .212 2.66 .494 .028 1 8 LFC07A 1782 1898 117 4 0 .532 2.28 5.06 1.024 .940 .123 2.62 .416 -.031 2 9 LFC08A 1861 1920 60 2 0 .542 3.47 5.10 .846 .729 .139 2.52 .505 -.018 1 10 LFC08B 1861 1917 57 2 0 .420 4.30 6.57 1.001 .621 .164 2.60 .535 .001 1 11 LFC10B 1867 1908 42 1 0 .402 3.16 5.05 .879 .104 .289 2.47 .504 .020 1 12 LFT01A 1815 1894 80 3 0 .651 2.43 3.63 .575 .556 .181 2.55 .501 -.001 1 13 LFT02A 1761 1918 158 5 0 .599 2.11 5.16 .751 .825 .139 2.77 .474 -.031 1 14 LFT02B 1813 1924 112 4 0 .535 2.43 4.72 .961 .859 .149 2.57 .401 .006 1 15 LFT03A 1832 1929 98 4 0 .595 1.92 4.04 .579 .902 .098 2.64 .427 -.021 4 16 LFT04A 1820 1926 107 5 2 .496 1.98 4.15 .789 .913 .106 2.85 .449 -.049 1 --- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- -- Total or mean: 1500 56 2 .556 2.49 7.13 .805 .741 .159 2.85 .466 -.018