Spasskaya Pad, Yakutsk, Russia - RUSS297 Additional Site Information Stefan Klesse Notes: Cores were collected beneath the flux tower of the Spasskaya Pad Scientific Forest Station near Yakutsk, Russia. All trees within a 14m radius were tagged, recorded and cored, yet some were too decayed or suppressed to yield useable tree-ring records. Only the good trees are included here, 2 cores averaged to the tree level. For the full dataset, including metadata about tree size and relative location, contact Stefan Klesse. Keywords: Flux Tower, Larix cajanderi, Larch, Boreal Forest, Yakutsk, Siberia Larix gmelinii var. cajanderi Silba Reference: Christoforos Pappas, Flurin Babst, Simone Fatichi, Stefan Klesse, Athanasios Paschalis, Richard L. Peters. 2021 in review. A circumpolar perspective on trees' contribution to the boreal forest carbon balance. In Boreal Forests in the Face of Climate Change - Sustainable Management. Editors: Miguel Montoro Girona, Hubert Morin, Sylvie Gauthier, Yves Bergeron. Springer Nature. Abstract: Partitioned estimates of the boreal forest carbon (C) sink components are crucial for process understanding and development of science-driven adaptation and mitigation strategies under climate change. Here, we provide a concise 'tree-centered' overview of the boreal forest C balance and offer a circumpolar perspective on trees' contribution to the boreal forest C dynamics. We combine an 'ant's-eye' view, based on quantitative in-situ C balance observations, with a 'bird's-eye' perspective on C dynamics across the circumboreal region using large-scale datasets. We conclude with an outlook addressing the trajectories of the circumboreal C dynamics in response to projected environmental changes. COFECHA output: Chronology file name : RUSS297.CRN Measurement file name : RUSS297.RWL Date checked : 03OCT21 Checked by : B. Bauer Beginning year : 1779 Ending year : 2013 Principal investigators: Stefan Klesse Site name : Spasskaya Pad Site location : Russia Species information : LAGM DAHURIAN LARCH Latitude : 6215 Longitude : 12937 Elevation : 175M Series intercorrelation: 0.714 Avg mean sensitivity : 0.298 Avg standard deviation : 0.274 Avg autocorrelation : 0.800 Number dated series : 35 Segment length tested : 50 Number problem segments: 4 Pct problem segments : 2.11 PART 5: CORRELATION OF SERIES BY SEGMENTS: Spasskaya Pad 08:13 Sun 03 Oct 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 1775 1800 1825 1850 1875 1900 1925 1950 1975 1824 1849 1874 1899 1924 1949 1974 1999 2024 --- -------- --------- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- 1 SPL01b-0 1876 2010 .81 .86 .84 .76 .70 2 SPL02a-0 1861 2013 .85 .89 .83 .75 .76 .76 3 SPL03a-0 1863 1939 .85 .76 .58 4 SPL04b-0 1879 2013 .79 .79 .78 .86 .83 5 SPL05a-0 1871 1939 .69 .65 .65 6 SPL06a-0 1875 2013 .72 .66 .69 .80 .75 7 SPL07a-0 1884 2013 .73 .73 .76 .71 .66 8 SPL08m2 1874 2013 .65 .65 .66 .62 .75 .80 9 SPL09c-0 1878 2013 .70 .72 .63 .52 .55 10 SPL10c-0 1866 2013 .69 .68 .39 .44 .68 .73 11 SPL12a-0 1879 2013 .75 .75 .81 .82 .80 12 SPL13a-0 1875 2013 .72 .72 .81 .86 .86 13 SPL16a-0 1788 2013 .62 .62 .66 .77 .75 .76 .70 .71 .75 14 SPL17a-0 1841 2013 .20B .33 .65 .69 .74 .59 .34 15 SPL18a-0 1802 1998 .75 .72 .73 .78 .74 .68 .76 16 SPL19a-0 1888 2013 .78 .75 .61 .63 .63 17 SPL21a-0 1816 2013 .45 .66 .81 .78 .73 .67 .78 .81 18 SPL22a-0 1847 2013 .67 .71 .74 .82 .76 .85 .89 19 SPL23a-0 1873 2013 .62 .61 .66 .65 .67 .69 20 SPL24a-0 1878 2013 .85 .74 .75 .78 .74 21 SPL25a-0 1890 2013 .63 .70 .74 .71 .72 22 SPL26a-0 1879 2013 .64 .56 .57 .73 .74 23 SPL27a-0 1872 2013 .69 .70 .70 .74 .74 .66 24 SPL29a-0 1968 2013 .74 25 SPL30a-0 1929 2013 .61 .56 .63 26 SPL35a-0 1872 2013 .81 .79 .81 .74 .80 .80 27 SPL37a-0 1796 2013 .12B .15B .41B .74 .75 .82 .79 .80 .83 28 SPL38a-0 1952 2013 .70 .61 29 SPL39a-0 1882 2013 .64 .72 .76 .71 .70 30 SPL45mea 1886 1937 .57 .62 31 SPL46a-0 1837 2013 .80 .79 .81 .82 .75 .69 .68 32 SPL47a-0 1862 2013 .66 .73 .84 .85 .83 .83 33 SPL48-0 1865 2013 .52 .59 .64 .70 .75 .71 34 SPL49a-0 1888 2013 .55 .59 .74 .85 .81 35 SPL50a-0 1779 2013 .63 .65 .56 .63 .79 .78 .77 .77 .78 Av segment correlation .46 .52 .59 .70 .72 .71 .72 .74 .73 PART 7: DESCRIPTIVE STATISTICS: Spasskaya Pad 08:13 Sun 03 Oct 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 SPL01b-0 1876 2010 135 5 0 .784 .50 2.16 .394 .879 .285 2.48 .383 -.030 1 2 SPL02a-0 1861 2013 153 6 0 .797 .60 1.66 .379 .879 .266 2.46 .357 -.045 1 3 SPL03a-0 1863 1939 77 3 0 .653 .32 1.26 .268 .876 .299 2.61 .574 .084 1 4 SPL04b-0 1879 2013 135 5 0 .813 .37 .82 .153 .604 .291 2.67 .431 -.039 1 5 SPL05a-0 1871 1939 69 3 0 .644 .24 1.26 .196 .785 .276 2.52 .470 .006 2 6 SPL06a-0 1875 2013 139 5 0 .731 .24 .87 .191 .893 .304 2.58 .394 -.004 1 7 SPL07a-0 1884 2013 130 5 0 .712 .37 .72 .132 .378 .287 2.69 .381 -.077 3 8 SPL08m2 1874 2013 140 6 0 .697 .43 1.24 .189 .723 .266 2.68 .447 -.009 1 9 SPL09c-0 1878 2013 136 5 0 .646 .22 .58 .095 .700 .280 2.52 .381 -.028 1 10 SPL10c-0 1866 2013 148 6 0 .618 .23 2.19 .247 .897 .294 2.72 .382 .032 1 11 SPL12a-0 1879 2013 135 5 0 .803 .33 .98 .196 .766 .317 2.70 .422 -.034 1 12 SPL13a-0 1875 2013 139 5 0 .795 .50 .92 .151 .489 .263 2.50 .402 -.034 1 13 SPL16a-0 1788 2013 226 9 0 .710 .59 2.63 .512 .935 .299 2.63 .467 -.052 1 14 SPL17a-0 1841 2013 173 7 1 .525 .21 1.16 .268 .929 .382 2.51 .357 -.055 1 15 SPL18a-0 1802 1998 197 7 0 .747 .40 1.38 .290 .864 .337 2.59 .454 -.062 1 16 SPL19a-0 1888 2013 126 5 0 .712 .41 1.12 .236 .780 .327 2.55 .357 -.054 1 17 SPL21a-0 1816 2013 198 8 0 .722 .65 1.84 .370 .871 .251 2.45 .343 -.055 1 18 SPL22a-0 1847 2013 167 7 0 .801 .42 1.12 .202 .832 .250 2.60 .374 -.026 1 19 SPL23a-0 1873 2013 141 6 0 .662 .39 1.47 .326 .859 .384 2.57 .428 .003 2 20 SPL24a-0 1878 2013 136 5 0 .782 .29 .94 .196 .805 .297 2.77 .432 -.044 1 21 SPL25a-0 1890 2013 124 5 0 .715 .78 1.85 .432 .852 .259 2.69 .468 .025 1 22 SPL26a-0 1879 2013 135 5 0 .655 .56 1.18 .225 .806 .210 2.68 .436 -.087 2 23 SPL27a-0 1872 2013 142 6 0 .684 .33 1.06 .195 .779 .366 2.50 .296 -.031 1 24 SPL29a-0 1968 2013 46 1 0 .738 .42 .88 .183 .614 .300 2.62 .518 -.066 1 25 SPL30a-0 1929 2013 85 3 0 .619 .19 .44 .069 .566 .288 2.59 .335 .009 1 26 SPL35a-0 1872 2013 142 6 0 .806 .40 1.60 .299 .762 .373 2.69 .393 -.037 1 27 SPL37a-0 1796 2013 218 9 3 .656 .38 1.20 .232 .860 .272 2.59 .423 -.065 1 28 SPL38a-0 1952 2013 62 2 0 .642 .23 .52 .128 .699 .403 2.77 .490 -.081 1 29 SPL39a-0 1882 2013 132 5 0 .707 .27 .86 .156 .772 .323 2.68 .520 -.065 1 30 SPL45mea 1886 1937 52 2 0 .621 .91 3.49 .593 .801 .253 2.76 .479 -.022 3 31 SPL46a-0 1837 2013 177 7 0 .762 .88 2.96 .665 .886 .294 2.38 .341 -.029 1 32 SPL47a-0 1862 2013 152 6 0 .794 .37 1.43 .274 .862 .249 2.46 .332 -.014 1 33 SPL48-0 1865 2013 149 6 0 .682 .29 1.52 .309 .863 .369 2.64 .424 -.038 1 34 SPL49a-0 1888 2013 126 5 0 .678 .40 .91 .164 .754 .241 2.49 .407 -.090 3 35 SPL50a-0 1779 2013 235 9 0 .712 .40 1.56 .299 .824 .302 2.64 .386 -.036 1 --- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- -- Total or mean: 4877 190 4 .714 .42 3.49 .274 .800 .298 2.77 .406 -.035