Poison Cove Bog, Alaska - AK157 Additional Site Information Colin Beier Scott Sink Notes: Study of declining Alaska yellow-cedar populations across the southeastern region of Alaska. Full set of declining stand data available at: https://www1.ncdc.noaa.gov/pub/data/paleo/treering/beier2008/ References: Beier CM, Sink SE, Hennon PE, D'Amore DV, Juday GP. 2008. Twentieth-century warming and the dendroclimatology of declining yellow-cedar forests in southeastern Alaska.  Canadian Journal of Forest Research 38(6): 1319-1334. COFECHA output: Chronology file name : AK157.CRN Measurement file name : AK157.RWL Date checked : 13NOV17 Checked by : B. Bauer Beginning year : 1700 Ending year : 2004 Principal investigators: Colin Beier Scott Sink Site name : Poison Cove Bog Site location : Alaska Species information : CHNO ALASKA YELLOW-CEDAR Latitude : 5732 Longitude : -13535 Elevation : M Series intercorrelation: 0.359 Avg mean sensitivity : 0.199 Avg standard deviation : 0.225 Avg autocorrelation : 0.827 Number dated series : 10 Segment length tested : 50 Number problem segments: 27 Pct problem segments : 32.93 PART 5: CORRELATION OF SERIES BY SEGMENTS: Poison Cove Bog 16:05 Mon 13 Nov 2017 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 1700 1725 1750 1775 1800 1825 1850 1875 1900 1925 1950 1975 1749 1774 1799 1824 1849 1874 1899 1924 1949 1974 1999 2024 --- -------- --------- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- 1 poi2t43a 1837 2004 .22B .57 .51 .53 .45 .48 .51 2 poi2t40a 1771 2004 .08B .08B .49 .64 .60 .56 .62 .63 .67 .65 3 poi2t47a 1700 2004 .40 .45 .48 .30A .29A .38 .45 .23B .47 .76 .68 .66 4 poi2t39a 1780 2004 .12B .24B .45 .65 .58 .56 .58 .61 .52 5 poi2t42a 1700 2004 .41 .50 .50 .20B .24B .39B .55 .63 .46 .49 .47 .45 6 poi2t41a 1894 2004 .25B .39 .48 .50 .50 7 poi2t45a 1907 2004 .09B .03B .10B .07A 8 poi2t44a 1893 2004 .22B .24A .37 .44 .40 9 poi2t46a 1850 2004 .03B-.02B-.18B-.16B-.11B-.10B 10 poi2t38a 1700 2004 .34 .37 .56 .45 .44 .37 .38 .44 .47 .30A .15B .16B Av segment correlation .38 .44 .41 .23 .34 .41 .46 .38 .37 .39 .40 .38 PART 7: DESCRIPTIVE STATISTICS: Poison Cove Bog 16:05 Mon 13 Nov 2017 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 poi2t43a 1837 2004 168 7 1 .418 .52 1.27 .230 .813 .194 2.73 .434 -.010 1 2 poi2t40a 1771 2004 234 10 2 .466 .43 1.06 .162 .793 .196 2.73 .414 -.032 1 3 poi2t47a 1700 2004 305 12 3 .434 .45 1.61 .279 .919 .210 2.65 .384 -.008 1 4 poi2t39a 1780 2004 225 9 2 .428 .85 1.50 .241 .705 .172 2.77 .434 .011 1 5 poi2t42a 1700 2004 305 12 3 .431 .22 .69 .125 .885 .228 2.66 .328 .018 1 6 poi2t41a 1894 2004 111 5 1 .366 1.11 2.04 .349 .755 .177 2.54 .371 -.016 1 7 poi2t45a 1907 2004 98 4 4 .079 .61 1.24 .204 .797 .144 2.68 .502 -.039 1 8 poi2t44a 1893 2004 112 5 2 .277 1.03 2.12 .362 .699 .206 2.91 .595 -.006 1 9 poi2t46a 1850 2004 155 6 6 -.068 .54 1.64 .303 .875 .214 2.75 .459 -.094 1 10 poi2t38a 1700 2004 305 12 3 .380 .37 .95 .178 .861 .197 2.50 .282 -.054 1 --- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- -- Total or mean: 2018 82 27 .359 .53 2.12 .225 .827 .199 2.91 .396 -.020