Forge Creek, Tennessee - tn030 Additional Information Neil Pederson, Kacie Tackett, 2007 NADEFW group Purpose of Collection: stand dynamics and carbon reconstruction Cores are stored at: Tree Ring Laboratory of Lamont-Doherty Earth Observatory and Columbia University NOTES: Project overview can be found as a part of the 2007 NADEFW Group project led by Neil Pederson - http://dendrolab.indstate.edu/nadef/ The site is along Forge Creek and the Gregory Mountain Bald Trail. It is a low elevation site with acidic soils. The purpose for the collection was a part of a stand dynamics and carbon reconstruction. Some of the data here are from trees sampled from random plots. Others, especially the oldest trees, were targeted for age characteristics. Dating prior to about 1650 should be considered preliminary; there is not enough replication for yellow-poplar in this region to be sure of the dating. Yellow-poplar is datable, but great attention is needed because of micro and locally absent rings. Samples that are not complete to the modern era or have gaps, like FC310a, had reaction rings or were severely suppressed and were not dated or measured. FC301A should likely be cut prior to 1850 if used for climatic studies. COFECHA output: Chronology file name : TN030.CRN Measurement file name : TN030.RWL Date checked : 15MAR11 Checked by : B. Bauer Beginning year : 1500 Ending year : 2006 Principal investigators: Neil Pederson Kacie Tackett 2007 NADEFW group Site name : Forge Creek Site location : Tennessee Species information : LITU TULIPTREE Latitude : 3532 Longitude : -08350 Elevation : 670M Series intercorrelation: 0.599 Avg mean sensitivity : 0.304 Avg standard deviation : 0.585 Avg autocorrelation : 0.625 Number dated series : 26 Segment length tested : 50 Number problem segments: 10 Pct problem segments : 3.91 PART 5: CORRELATION OF SERIES BY SEGMENTS: Forge Creek 15:17 Tue 15 Mar 2011 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 1575 1600 1625 1650 1675 1700 1725 1750 1775 1800 1825 1850 1875 1900 1925 1950 1975 1624 1649 1674 1699 1724 1749 1774 1799 1824 1849 1874 1899 1924 1949 1974 1999 2024 --- -------- --------- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- 1 FC223a 1896 2006 .50 .49 .60 .59 .52 2 FC223B 1878 2006 .63 .61 .58 .55 .45 3 FC301A 1737 2006 .17B .21B .38 .47 .63 .70 .53 .52 .61 .64 .67 4 FC301B 1757 2006 .61 .63 .58 .65 .76 .78 .68 .68 .61 .58 5 FC304a 1886 2006 .63 .77 .70 .74 .71 6 FC304B 1655 2006 .41 .36 .56 .53 .57 .76 .68 .75 .83 .80 .78 .77 .74 .63 7 FC310a 1622 1799 .50 .56 .68 .63 .70 .75 .67 8 FC310a 1829 2006 .44 .60 .71 .71 .73 .60 .63 9 FC310b 1664 2006 .65 .68 .64 .70 .70 .56 .55 .75 .75 .67 .70 .70 .53 .52 10 FCL01b 1745 2006 .56 .59 .45 .39 .68 .71 .62 .55 .46 .46 .45 11 FCL1Bx 1822 2006 .66 .67 .82 .79 .73 .70 .68 .68 12 FCL01X 1690 2006 .57 .56 .64 .64 .54 .55 .75 .70 .60 .73 .64 .28A .34 13 FCL10C 1849 1993 .54 .55 .72 .68 .57 .24A 14 FCL11A 1775 2006 .53 .50 .56 .67 .77 .79 .63 .55 .65 15 FCL11B 1730 2006 .62 .66 .61 .68 .73 .79 .84 .78 .62 .66 .65 16 FCL12a 1677 2006 .54 .62 .80 .82 .76 .65 .66 .66 .56 .56 .57 .44 .36 17 FCL12B 1624 2006 .50 .51 .21B .34 .56 .65 .73 .60 .60 .77 .80 .72 .60 .59 .46 .39 18 FCL13a 1592 2006 .41 .38 .60 .54 .52 .59 .74 .83 .74 .53 .61 .76 .75 .69 .56 .53 .58 19 FCL13b 1500 1919 .42 .36 .64 .72 .63 .54 .52 .67 .56 .30B .49 .59 .49 20 FCL14A 1806 2006 .69 .71 .60 .49 .69 .65 .51 .50 21 FCL14B 1789 2006 .45 .41 .64 .66 .66 .70 .65 .54 .57 22 FCL15a 1891 2006 .70 .71 .57 .57 .57 23 FCL15b 1674 2006 .66 .66 .45 .32A .51 .69 .70 .72 .83 .75 .58 .46 .51 .53 24 FCL16a 1747 2006 .20B .23B .41 .48 .57 .66 .63 .56 .56 .43 .34 25 FCL16b 1740 2006 .44 .45 .42 .49 .49 .59 .65 .59 .60 .68 .72 26 FCL28b 1949 2006 .34 .44 .22B Av segment correlation .42 .44 .58 .55 .55 .58 .55 .59 .57 .55 .64 .70 .67 .66 .61 .54 .53 PART 7: DESCRIPTIVE STATISTICS: Forge Creek 15:17 Tue 15 Mar 2011 Page 10 ----------------------------------------------------------------------------------------------------------------------------------- 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 FC223a 1896 2006 111 5 0 .521 1.73 4.83 1.064 .574 .430 2.85 .441 -.060 1 2 FC223B 1878 2006 129 5 0 .582 .36 1.04 .177 .585 .357 2.82 .530 -.007 1 3 FC301A 1737 2006 270 11 2 .487 .26 3.04 .204 .148 .314 2.98 .327 -.030 1 4 FC301B 1757 2006 250 10 0 .652 .30 .96 .145 .473 .374 2.67 .383 -.026 1 5 FC304a 1886 2006 121 5 0 .686 1.49 3.52 .636 .424 .368 2.76 .477 -.008 1 6 FC304B 1655 2006 352 14 0 .675 1.28 4.31 .496 .545 .291 2.56 .287 -.033 1 7 FC310a 1622 1799 178 7 0 .637 1.64 5.59 1.131 .812 .324 2.60 .398 -.011 1 8 FC310a 1829 2006 178 7 0 .596 .81 3.06 .457 .654 .311 2.88 .421 -.085 1 9 FC310b 1664 2006 343 14 0 .658 1.35 6.78 .962 .791 .309 2.50 .250 -.026 1 10 FCL01b 1745 2006 262 11 0 .560 .81 3.55 .481 .739 .301 2.68 .337 -.035 1 11 FCL1Bx 1822 2006 185 8 0 .701 1.98 4.68 .737 .488 .283 2.76 .416 -.008 1 12 FCL01X 1690 2006 317 13 1 .583 1.44 3.86 .578 .452 .300 2.73 .444 .042 3 13 FCL10C 1849 1993 145 6 1 .474 1.50 4.91 .941 .821 .248 2.79 .434 -.047 1 14 FCL11A 1775 2006 232 9 0 .618 1.87 5.11 .824 .567 .318 2.60 .368 -.036 2 15 FCL11B 1730 2006 277 11 0 .685 1.49 5.53 1.048 .778 .324 2.50 .366 -.064 1 16 FCL12a 1677 2006 330 13 0 .621 .85 2.31 .272 .612 .207 2.82 .343 -.012 1 17 FCL12B 1624 2006 383 16 1 .592 .83 3.00 .344 .686 .240 2.69 .336 .018 2 18 FCL13a 1592 2006 415 17 0 .618 .65 3.21 .354 .714 .309 2.61 .368 -.026 1 19 FCL13b 1500 1919 420 13 1 .569 .60 2.36 .312 .668 .330 2.66 .335 -.028 1 20 FCL14A 1806 2006 201 8 0 .605 2.39 5.97 .960 .387 .358 2.70 .449 .004 1 21 FCL14B 1789 2006 218 9 0 .576 2.24 6.33 1.113 .605 .337 2.80 .421 -.084 3 22 FCL15a 1891 2006 116 5 0 .601 1.24 3.02 .473 .675 .220 2.77 .544 -.025 1 23 FCL15b 1674 2006 333 14 1 .646 1.26 3.42 .474 .667 .233 2.57 .328 -.006 1 24 FCL16a 1747 2006 260 11 2 .485 1.01 3.55 .639 .784 .342 2.62 .342 -.029 2 25 FCL16b 1740 2006 267 11 0 .566 .93 3.52 .619 .783 .343 2.72 .364 -.031 1 26 FCL28b 1949 2006 58 3 1 .184 3.23 6.99 1.320 .723 .234 2.57 .403 .038 2 --- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- -- Total or mean: 6351 256 10 .599 1.16 6.99 .585 .625 .304 2.98 .369 -.023