Abisko Valley, Lappland, Sweden - swed329 Additional Site Information Jan Hoogesteger Purpose of Collection: Climatology Cores are stored at: Lund, Hamburg Reference: Eckstein, D., J. Hoogesteger, and R.L. Holmes. 1991. Insect-related differences in growth of birch and pine at northern treeline in Swedish Lapland. Holarctic Ecology, Vol. 14, Issue 1, pp. 18-23. doi: 10.1111/j.1600-0587.1991.tb00628.x ABSTRACT: The tree-ring patterns of birch and pine in the Torneträsk area of Swedish Lapland were compared. In order to dendrochronologically identify years of major insect attacks on birch, pine being unaffected by these outbreaks, served as control. The sharp growth increase in birch following the historically confirmed, heavy outbreak in 1954–55 is discussed and evidence pointing to possible earlier outbreaks is presented. Notes: dry heath vegetation COFECHA output: Chronology file name : SWED329.CRN Measurement file name : SWED329.RWL Date checked : 29SEP08 Checked by : B. Bauer Beginning year : 1820 Ending year : 1983 Principal investigators: Jan Hoogesteger Site name : Abisko Valley Site location : Sweden Species information : BEPU DOWNY BIRCH var. tortuosa Latitude : 6820 Longitude : 01848 Elevation : 470M Series intercorrelation: 0.758 Avg mean sensitivity : 0.410 Avg standard deviation : 0.279 Avg autocorrelation : 0.629 Number dated series : 44 Segment length tested : 50 Number problem segments: 3 Pct problem segments : 1.86 PART 5: CORRELATION OF SERIES BY SEGMENTS: Abisko Valley 11:24 Mon 29 Sep 2008 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 1849 1874 1899 1924 1949 1974 1999 --- -------- --------- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- 1 0621000 1820 1981 .95 .96 .97 .96 .96 .95 .95 2 0621001 1820 1981 .95 .95 .95 .96 .96 .94 .94 3 0621002 1889 1983 .70 .74 .90 .90 4 0621003 1873 1983 .50 .59 .88 .91 .91 5 0621101 1842 1981 .65 .62 .79 .87 .86 .86 6 0621102 1843 1981 .59 .57 .72 .83 .83 .85 7 0621103 1844 1981 .71 .64 .74 .86 .84 .82 8 0621104 1873 1947 .89 .88 .85 9 0621105 1820 1981 .58 .56 .54 .75 .80 .79 .81 10 0621106 1883 1981 .79 .80 .81 .83 11 0621107 1859 1981 .65 .79 .81 .72 .77 12 0621108 1829 1981 .65 .78 .87 .79 .73 .79 13 0621109 1852 1981 .71 .86 .83 .79 .82 14 0621110 1840 1944 .66 .75 .82 .75 15 0621111 1853 1981 .80 .73 .79 .61 .64 16 0621112 1937 1981 .80 17 0621113 1936 1981 .78 18 0621114 1888 1981 .68 .74 .72 .77 19 0621115 1946 1981 .83 20 0621116 1884 1981 .34B .43 .67 .78 21 0621117 1939 1981 .68 22 0621118 1941 1981 .78 23 0621119 1881 1981 .71 .65 .70 .75 24 0621120 1871 1980 .65 .63 .63 .66 .75 25 0621121 1883 1981 .72 .74 .65 .66 26 0621122 1914 1981 .69 .69 .74 27 0621212 1925 1983 .63 .69 28 0621222 1921 1983 .77 .80 .81 29 0621232 1894 1983 .59 .58 .75 .78 30 0621242 1919 1983 .80 .85 .86 31 0621252 1924 1983 .73 .74 .83 32 0621262 1923 1983 .70 .76 .78 33 0621282 1889 1983 .67 .72 .80 .71 34 0621292 1927 1983 .74 .78 35 0621302 1920 1983 .74 .73 .71 36 0621312 1927 1983 .74 .76 37 0621422 1927 1983 .84 .90 38 0621432 1929 1983 .71 .73 39 0621442 1896 1983 .76 .77 .82 .86 40 0621452 1891 1983 .71 .77 .79 .76 41 0621472 1925 1983 .87 .86 42 0621482 1916 1983 .80 .83 .85 43 0621492 1873 1983 .35B .42B .67 .74 .72 44 0621512 1934 1983 .74 Av segment correlation .83 .72 .69 .73 .76 .77 .80 PART 7: DESCRIPTIVE STATISTICS: Abisko Valley 11:24 Mon 29 Sep 2008 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 0621000 1820 1981 162 7 0 .957 .45 1.09 .205 .600 .337 2.69 .555 .022 1 2 0621001 1820 1981 162 7 0 .952 .46 1.18 .212 .610 .331 2.69 .553 .015 1 3 0621002 1889 1983 95 4 0 .806 .58 1.12 .242 .540 .343 2.49 .476 .084 1 4 0621003 1873 1983 111 5 0 .745 .39 1.33 .231 .681 .375 2.69 .439 -.023 1 5 0621101 1842 1981 140 6 0 .756 .45 1.55 .295 .739 .397 2.71 .484 .028 1 6 0621102 1843 1981 139 6 0 .718 .43 1.37 .332 .789 .439 2.99 .480 .053 1 7 0621103 1844 1981 138 6 0 .770 .50 2.11 .335 .715 .374 2.86 .559 .034 1 8 0621104 1873 1947 75 3 0 .863 .39 .98 .192 .396 .427 2.81 .636 .076 1 9 0621105 1820 1981 162 7 0 .714 .47 1.64 .289 .738 .352 2.75 .479 -.034 1 10 0621106 1883 1981 99 4 0 .807 .76 2.29 .476 .646 .461 2.71 .500 .020 1 11 0621107 1859 1981 123 5 0 .720 .39 1.22 .263 .726 .530 2.52 .445 -.007 1 12 0621108 1829 1981 153 6 0 .746 .37 .95 .188 .573 .395 2.60 .516 .011 1 13 0621109 1852 1981 130 5 0 .778 .33 1.01 .218 .567 .509 2.69 .477 .036 1 14 0621110 1840 1944 105 4 0 .692 .49 1.32 .248 .604 .321 2.65 .501 -.091 1 15 0621111 1853 1981 129 5 0 .734 .42 1.41 .245 .562 .442 2.80 .565 -.026 2 16 0621112 1937 1981 45 1 0 .802 .44 .93 .214 .439 .468 2.78 .581 .110 1 17 0621113 1936 1981 46 1 0 .781 .62 1.78 .521 .752 .531 2.62 .532 .021 1 18 0621114 1888 1981 94 4 0 .734 .42 1.08 .222 .552 .388 2.69 .474 -.084 1 19 0621115 1946 1981 36 1 0 .828 .77 1.58 .384 .359 .516 2.55 .607 .081 1 20 0621116 1884 1981 98 4 1 .611 .34 1.48 .251 .817 .340 2.46 .341 -.010 4 21 0621117 1939 1981 43 1 0 .676 .69 1.32 .333 .704 .368 2.66 .632 .026 1 22 0621118 1941 1981 41 1 0 .776 .72 1.65 .418 .528 .471 2.58 .481 .029 1 23 0621119 1881 1981 101 4 0 .723 .44 1.10 .256 .722 .409 2.83 .402 -.003 1 24 0621120 1871 1980 110 5 0 .679 .41 1.72 .334 .791 .420 3.04 .564 .047 1 25 0621121 1883 1981 99 4 0 .679 .38 1.66 .251 .606 .419 2.55 .391 -.093 1 26 0621122 1914 1981 68 3 0 .714 .44 1.18 .337 .808 .419 2.63 .443 -.049 1 27 0621212 1925 1983 59 2 0 .690 .54 1.23 .249 .493 .402 2.63 .534 -.019 1 28 0621222 1921 1983 63 3 0 .781 .85 1.61 .309 .445 .305 2.54 .538 .037 1 29 0621232 1894 1983 90 4 0 .706 .48 1.23 .257 .628 .416 2.54 .395 -.023 1 30 0621242 1919 1983 65 3 0 .811 .56 1.17 .245 .532 .369 2.60 .500 .089 1 31 0621252 1924 1983 60 3 0 .780 .81 1.84 .452 .678 .384 2.60 .486 -.006 1 32 0621262 1923 1983 61 3 0 .755 .83 1.72 .333 .382 .388 2.56 .492 .072 1 33 0621282 1889 1983 95 4 0 .689 .59 1.37 .332 .569 .436 2.59 .452 .024 1 34 0621292 1927 1983 57 2 0 .757 .59 1.20 .217 .398 .339 2.56 .413 .001 1 35 0621302 1920 1983 64 3 0 .725 .63 1.08 .228 .535 .316 2.68 .572 .048 1 36 0621312 1927 1983 57 2 0 .759 .74 1.35 .290 .574 .304 2.45 .483 .066 1 37 0621422 1927 1983 57 2 0 .872 .50 1.39 .316 .691 .462 2.90 .569 -.069 1 38 0621432 1929 1983 55 2 0 .680 .50 1.33 .261 .399 .493 2.75 .608 .137 1 39 0621442 1896 1983 88 4 0 .826 .39 1.02 .251 .595 .497 2.91 .599 -.070 1 40 0621452 1891 1983 93 4 0 .739 .38 1.94 .308 .734 .430 2.83 .451 -.085 1 41 0621472 1925 1983 59 2 0 .867 .64 1.68 .365 .640 .464 2.61 .475 -.067 1 42 0621482 1916 1983 68 3 0 .832 .37 1.22 .266 .539 .579 2.81 .494 -.030 1 43 0621492 1873 1983 111 5 2 .556 .35 1.33 .236 .755 .444 2.83 .557 -.006 1 44 0621512 1934 1983 50 1 0 .743 .53 2.00 .363 .657 .481 2.85 .573 -.024 1 --- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- -- Total or mean: 3956 161 3 .758 .49 2.29 .279 .629 .410 3.04 .502 .004