Harvard Forest, Massachusetts - MA036 Additional Site Information R. Stockton Maxwell Soumaya Belmecheri Alan H. Taylor References: R. Stockton Maxwell, Soumaya Belmecheri, Alan H. Taylor, Kenneth J. Davis, Troy W. Ocheltree. 2020. Carbon isotope ratios in tree rings respond differently to climatic variations than tree-ring width in a mesic temperate forest. Agricultural and Forest Meteorology, Vol. 288-289, 108014. DOI: 10.1016/j.agrformet.2020.108014 Maxwell, R.S., Belmecheri, S., Taylor, A.H., Davis, K.J., Guerrieri, R., Moore, D.J., Rayback, S.A.. 2021 in press. Global Change Biology, in press. Notes: New England Hemlock Transect, 10 sites along a 500+ km transect stretching from CT to ME. Data collected for Project "Estimating Forest Productivity Over Regional and Multi-Decadal Time Scales Using Carbon Isotopes in Tree Rings." While the larger project focused on carbon isotopes, here we present tree-ring width data associated with the project. Keywords: carbon isotopes, climate response, dendrochronology, forest productivity Funding: US National Science Foundation BCS-1229887 COFECHA output: Chronology file name : MA036.CRN Measurement file name : MA036.RWL Date checked : 08JAN21 Checked by : B. Bauer Beginning year : 1790 Ending year : 2012 Principal investigators: R. Stockton Maxwell Soumaya Belmecheri Alan H. Taylor Site name : Harvard Forest Site location : Mass. Species information : TSCA EASTERN HEMLOCK Latitude : 4232 Longitude : -07210 Elevation : 344M Series intercorrelation: 0.600 Avg mean sensitivity : 0.225 Avg standard deviation : 0.990 Avg autocorrelation : 0.863 Number dated series : 55 Segment length tested : 50 Number problem segments: 19 Pct problem segments : 6.09 PART 5: CORRELATION OF SERIES BY SEGMENTS: Harvard Forest 07:50 Fri 08 Jan 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 1800 1825 1850 1875 1900 1925 1950 1975 1849 1874 1899 1924 1949 1974 1999 2024 --- -------- --------- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- 1 EMS27A 1909 2012 .59 .60 .61 .51 2 EMS27B 1897 2012 .41 .56 .61 .57 .31A 3 EMS28A 1925 2012 .38 .53 .57 4 EMS28B 1924 2012 .49 .49 .65 .58 5 EMS29A 1907 2012 .24B .32B .41 .62 6 EMS29B 1907 2012 .24B .38 .59 .66 7 EMS30B 1885 2012 .46 .53 .70 .71 .53 8 EMS31A 1885 2012 .53 .44 .55 .61 .66 9 EMS31B 1920 2012 .52 .55B .53 .65 10 EMS32A 1899 2012 .55 .54 .53 .65 .66 11 EMS32B 1906 2012 .43 .50 .67 .70 12 EMS36A 1896 2012 .35 .50 .35 .51 .62 13 EMS36B 1920 2012 .42 .47 .65 .69 14 HFT28A 1896 2010 .51 .60 .72 .65 .56 15 HFT28B 1888 2010 .21B .42 .71 .67 .46 16 HFT29A 1887 2010 .15B .35 .41 .40 .41 17 HFT29B 1882 2010 .29A .29A .41B .48 .38B 18 HFT30A1 1897 2010 .47 .42 .56 .43 .32A 19 HFT30B 1885 2010 .52 .51 .48 .34 .20B 20 HFT31A 1906 2010 .50 .76 .59 .50 21 HFT31B 1879 2010 .41 .49 .68 .74 .64 22 HFT32A 1897 2010 .55 .52 .58 .56 .43 23 HFT32B 1895 2010 .49 .57 .72 .79 .77 24 HFT33A 1870 2010 .56 .65 .28A .51 .65 .69 25 HFT33B 1858 2010 .76 .63 .31A .62 .50 .44 26 HFT34A 1790 2010 .56 .85 .88 .84 .78 .83 .73 .67 27 HFT34B 1835 2010 .79 .89 .86 .78 .70 .52 .40B 28 HFT35A 1837 2010 .66 .72 .67 .62 .77 .78 .67 29 HFT35B 1847 2010 .76 .76 .80 .78 .73 .67 .65 30 HFT36A 1828 2010 .60 .82 .83 .66 .68 .70 .56 31 HFT36B 1820 2010 .67 .72 .81 .87 .81 .74 .58 .52 32 HFT37A 1806 2010 .44 .52 .75 .80 .75 .73 .66 .61 33 HFT37B 1820 2010 .59 .60 .83 .80 .82 .81 .75 .67 34 HFT38A 1885 2010 .81 .73 .68 .67 .61 35 HFT38B 1882 2010 .63 .59 .72 .74 .77 36 HFT39A 1892 2010 .54 .47 .57 .52 .56 37 HFT39B 1906 2010 .37 .48 .57B .57 38 HFT40A 1807 2010 .71 .83 .85 .78 .62 .73 .80 .78 39 HFT40B 1851 2010 .64 .60 .43 .64 .72 .67 40 HFT41A 1809 2010 .68 .69 .79 .81 .74 .75 .70 .71 41 HFT41B 1812 2010 .48 .58 .77 .84 .72 .73 .66 .65 42 HFT42A 1834 2010 .68 .59 .52 .58 .57 .65 .67 43 HFT42B 1883 2010 .71 .50 .42 .54 .53 44 HFTI41 1810 2010 .64 .73 .79 .81 .73 .76 .72 .73 45 HFTR30A 1893 2012 .43 .35 .58 .67 .54 46 HFTR30B 1890 2012 .67 .68 .55 .34 .33B 47 HFTR34D 1859 2012 .41 .65 .75 .68 .57 .54 48 HFTR34E 1818 2012 .75 .76 .86 .87 .80 .81 .77 .76 49 HFTR38A 1880 2012 .56 .61 .66 .49 .21B 50 HFTR38B 1893 2012 .71 .67 .60 .61 .64 51 HFTR41A 1829 2012 .68 .73 .77 .80 .60 .45 .47 52 HFTR41B 1828 2012 .73 .78 .81 .70 .73 .76 .78 53 HFTR42A 1839 2012 .81 .79 .67 .48 .46 .49 .50 54 HFTR42B 1860 2012 .45 .51 .56 .59 .45 .42 55 HTFR34C 1899 2012 .81 .81 .71 .70 .72 Av segment correlation .61 .71 .74 .63 .56 .61 .61 .57 PART 7: DESCRIPTIVE STATISTICS: Harvard Forest 07:50 Fri 08 Jan 2021 Page 9 ----------------------------------------------------------------------------------------------------------------------------------- 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 EMS27A 1909 2012 104 4 0 .530 1.60 3.33 .529 .745 .176 2.48 .350 -.064 2 2 EMS27B 1897 2012 116 5 1 .415 1.66 4.31 .693 .815 .207 2.53 .466 -.041 3 3 EMS28A 1925 2012 88 3 0 .480 2.22 5.38 .942 .863 .159 2.57 .368 .051 3 4 EMS28B 1924 2012 89 4 0 .544 1.81 4.83 .975 .875 .211 2.46 .382 -.081 1 5 EMS29A 1907 2012 106 4 2 .451 1.62 3.37 .776 .849 .212 2.80 .314 -.105 1 6 EMS29B 1907 2012 106 4 1 .498 1.86 4.45 .876 .713 .268 2.93 .455 .020 1 7 EMS30B 1885 2012 128 5 0 .512 1.54 3.88 .727 .738 .222 2.52 .324 .010 1 8 EMS31A 1885 2012 128 5 0 .569 1.69 5.80 1.293 .904 .240 2.65 .397 -.043 1 9 EMS31B 1920 2012 93 4 1 .586 2.41 4.36 1.066 .866 .175 2.65 .437 -.059 1 10 EMS32A 1899 2012 114 5 0 .601 1.43 3.49 .738 .804 .266 2.57 .351 -.010 2 11 EMS32B 1906 2012 107 4 0 .610 1.52 3.83 .764 .812 .243 2.54 .402 -.024 2 12 EMS36A 1896 2012 117 5 0 .496 2.10 5.38 .880 .696 .227 2.79 .526 -.019 1 13 EMS36B 1920 2012 93 4 0 .582 2.23 4.54 .882 .796 .198 2.56 .381 .027 2 14 HFT28A 1896 2010 115 5 0 .586 2.37 6.32 1.619 .941 .183 2.83 .473 -.019 1 15 HFT28B 1888 2010 123 5 1 .438 1.81 4.09 .999 .907 .205 2.72 .474 -.090 1 16 HFT29A 1887 2010 124 5 1 .325 1.64 5.05 1.276 .949 .196 2.62 .457 .015 3 17 HFT29B 1882 2010 129 5 4 .335 1.62 4.98 1.291 .946 .192 2.58 .313 -.049 3 18 HFT30A1 1897 2010 114 5 1 .460 1.65 3.68 .655 .779 .230 2.75 .470 .006 2 19 HFT30B 1885 2010 126 5 1 .351 1.51 3.83 .805 .878 .229 2.50 .314 .004 1 20 HFT31A 1906 2010 105 4 0 .550 1.66 5.35 1.241 .900 .275 2.51 .391 -.058 1 21 HFT31B 1879 2010 132 5 0 .567 1.80 4.79 .987 .860 .244 2.79 .449 -.043 1 22 HFT32A 1897 2010 114 5 0 .474 1.80 5.19 1.159 .920 .190 2.68 .432 .014 1 23 HFT32B 1895 2010 116 5 0 .651 1.88 5.17 1.153 .935 .181 2.45 .440 -.042 1 24 HFT33A 1870 2010 141 6 1 .574 2.17 6.84 1.574 .951 .212 2.72 .385 -.031 3 25 HFT33B 1858 2010 153 6 1 .551 2.15 6.67 1.318 .896 .214 2.55 .347 .023 2 26 HFT34A 1790 2010 221 8 0 .714 1.41 4.86 .888 .888 .244 2.55 .396 -.037 3 27 HFT34B 1835 2010 176 7 1 .713 1.72 5.69 1.224 .923 .227 2.48 .427 -.038 1 28 HFT35A 1837 2010 174 7 0 .666 2.19 7.67 1.675 .943 .229 2.43 .267 .037 3 29 HFT35B 1847 2010 164 7 0 .736 2.06 6.13 1.399 .932 .221 2.42 .280 .003 2 30 HFT36A 1828 2010 183 7 0 .673 1.83 4.58 .929 .849 .221 2.72 .330 -.047 1 31 HFT36B 1820 2010 191 8 0 .708 1.72 4.89 .940 .882 .214 2.65 .444 -.034 1 32 HFT37A 1806 2010 205 8 0 .637 1.81 6.76 1.284 .888 .249 2.74 .439 -.024 1 33 HFT37B 1820 2010 191 8 0 .712 1.62 5.01 1.023 .886 .228 2.60 .395 -.013 1 34 HFT38A 1885 2010 126 5 0 .710 1.59 3.51 .712 .709 .252 2.95 .590 -.038 3 35 HFT38B 1882 2010 129 5 0 .679 1.51 5.39 1.043 .877 .273 2.62 .432 -.072 1 36 HFT39A 1892 2010 119 5 0 .525 1.70 4.57 .939 .809 .254 2.90 .486 -.027 1 37 HFT39B 1906 2010 105 4 1 .459 1.91 4.42 1.052 .819 .245 2.71 .452 .038 1 38 HFT40A 1807 2010 204 8 0 .747 1.30 4.96 .740 .818 .229 2.65 .503 -.042 1 39 HFT40B 1851 2010 160 6 0 .554 1.28 4.64 1.078 .910 .267 2.80 .507 .023 3 40 HFT41A 1809 2010 202 8 0 .730 1.46 4.03 .830 .851 .223 2.59 .415 -.021 1 41 HFT41B 1812 2010 199 8 0 .659 1.81 5.68 1.062 .872 .222 2.50 .411 -.053 1 42 HFT42A 1834 2010 177 7 0 .598 1.61 4.39 .876 .878 .206 2.60 .403 .011 3 43 HFT42B 1883 2010 128 5 0 .599 1.03 3.06 .704 .945 .177 2.55 .350 -.011 3 44 HFTI41 1810 2010 201 8 0 .722 1.45 4.13 .848 .864 .217 2.56 .406 -.043 1 45 HFTR30A 1893 2012 120 5 0 .503 1.59 3.57 .642 .799 .218 2.40 .311 -.010 1 46 HFTR30B 1890 2012 123 5 1 .533 1.46 3.49 .675 .792 .238 2.90 .452 -.047 1 47 HFTR34D 1859 2012 154 6 0 .574 1.47 4.53 .877 .869 .243 2.62 .446 -.043 1 48 HFTR34E 1818 2012 195 8 0 .798 1.81 6.14 1.288 .909 .248 2.69 .353 -.032 1 PART 7: DESCRIPTIVE STATISTICS: Harvard Forest 07:50 Fri 08 Jan 2021 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 () --- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- -- 49 HFTR38A 1880 2012 133 5 1 .465 1.58 4.37 .909 .870 .257 2.91 .451 .006 1 50 HFTR38B 1893 2012 120 5 0 .666 1.85 4.76 .958 .797 .242 2.74 .559 -.007 3 51 HFTR41A 1829 2012 184 7 0 .630 1.67 5.81 .903 .847 .224 2.70 .459 .017 1 52 HFTR41B 1828 2012 185 7 0 .748 1.75 5.36 1.050 .880 .225 2.70 .417 -.073 1 53 HFTR42A 1839 2012 174 7 0 .634 1.12 3.52 .798 .930 .199 2.57 .399 -.023 1 54 HFTR42B 1860 2012 153 6 0 .489 1.50 3.43 .739 .867 .197 2.61 .444 .011 1 55 HTFR34C 1899 2012 114 5 0 .759 .98 3.34 .546 .736 .277 2.87 .491 .032 1 --- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- -- Total or mean: 7791 312 19 .600 1.68 7.67 .990 .863 .225 2.95 .414 -.022