Sycamore Grove Park, California, Calif. Sycamore - CA634 Additional Site Information John C. King Purpose of Collection: Sycamore mortality event Detrend method: Negative exponontial or linear regression with negative or 0 slope Cores are stored at: Lone Pine Research 2604 Westridge Drive Bozeman, MT 59715 406-522-0694 For access to samples, contact: Zone 7 Water Agency 5997 Parkside Drive Pleasanton, CA 94588-5127 925-484-2600 LARPD Livermore Area Recreation and Park District 71 Trevarno Road Livermore, California 94551-4931 925-373-5700 Reference: Technical reports regarding Sycamore Grove Park are retained by: Zone 7 Water Agency 5997 Parkside Drive Pleasanton, CA 94588-5127 925-484-2600 LARPD Livermore Area Recreation and Park District 71 Trevarno Road Livermore, California 94551-4931 925-373-5700 Tree-ring research was conducted to investigate a late 1980s sycamore mortality event at Sycamore Grove Park, Livermore, CA. The assembled sycamore chronology contains a 1985-1993 growth suppression that coincides with the mortality event, and is associated with both climatic and non-climatic factors. Cross-dating was confirmed by comparison to on-site valley oak records as well as regional ITRDB chronologies. COFECHA output: Chronology file name : CA634.CRN Measurement file name : CA634.RWL Date checked : 25MAY06 Checked by : B. Bauer Beginning year : 1816 Ending year : 2003 Principal investigators: John C. King Site name : Sycamore Grove Park Site location : California Species information : PLRA CALIF. SYCAMORE Latitude : +3738 Longitude : -12146 Elevation : 149M Series intercorrelation: 0.712 Avg mean sensitivity : 0.472 Avg standard deviation : 1.775 Avg autocorrelation : 0.564 Number dated series : 43 Segment length tested : 50 Number problem segments: 2 Pct problem segments : 1.74 PART 5: CORRELATION OF SERIES BY SEGMENTS: Sycamore Grove Park 11:16 Thu 25 May 2006 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 sg100a 1884 1976 .63 .76 .83 .81 2 sg100b 1891 1976 .62 .68 .78 .76 3 sg101a 1926 2002 .78 .74 .74 4 sg101b 1913 2002 .78 .73 .81 .82 5 sg104a 1935 1979 .77 6 sg104b 1924 1983 .84 .84 .81 7 sg105a 1918 2002 .80 .81 .79 .80 8 sg105b 1907 2002 .74 .76 .74 .74 9 sg107a 1926 2002 .67 .70 .70 10 sg107b 1926 2002 .79 .74 .73 11 sg108a 1970 2002 .54 12 sg108b1 1918 1956 .58 13 sg108b2 1967 1984 .63 14 sg109a 1897 1951 .41 .49 .53 15 sg109b 1904 1940 .65 16 sg111a 1937 2002 .68 .62 .69 17 sg111b 1932 2002 .70 .53 .60 18 sg112a1 1914 1976 .69 .47 .47 19 sg112a2 1990 2002 .43B 20 sg112b1 1920 1970 .67 .61 21 sg112b2 1990 2002 .70 22 sg114a 1898 2002 .64 .67 .77 .82 .82 23 sg114b 1912 2002 .73 .73 .86 .87 24 sg115a 1903 2002 .72 .73 .83 .83 25 sg115b 1913 1976 .83 .70 .71 26 sg116a 1945 2002 .80 .82 .82 27 sg118c 1935 1972 .83 28 sg130a 1929 1976 .64 29 sg131a1 1932 1976 .79 30 sg131a2 1990 2002 .62 31 sg132a 1940 2002 .72 .69 .70 32 sg135a 1930 2002 .86 .87 .87 33 sg135b 1952 2002 .75 .74 34 sg137a1 1920 1966 .79 35 sg137a2 1990 2002 .76 36 sg137b1 1919 1966 .77 37 sg137b2 1990 2002 .84 38 sg138a1 1915 1940 .77 39 sg138a2 1960 1976 .32B 40 sg138b 1915 1983 .69 .71 .78 41 sg141c 1872 2003 .54 .51 .33 .33 .56 .55 42 sg212b 1823 2003 .91 .91 .82 .68 .60 .63 .73 .73 43 sg212c 1816 2003 .91 .92 .85 .65 .54 .58 .68 .68 Av segment correlation .91 .91 .74 .59 .69 .71 .71 .73 PART 7: DESCRIPTIVE STATISTICS: Sycamore Grove Park 11:16 Thu 25 May 2006 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 sg100a 1884 1976 93 4 0 .730 2.77 12.50 2.344 .762 .457 2.81 .621 .052 1 2 sg100b 1891 1976 86 4 0 .669 2.17 8.14 1.915 .674 .608 2.76 .536 .106 1 3 sg101a 1926 2002 77 3 0 .766 2.66 9.30 1.850 .524 .542 2.81 .515 -.087 1 4 sg101b 1913 2002 90 4 0 .804 2.36 9.48 1.629 .449 .527 2.89 .423 .029 1 5 sg104a 1935 1979 45 1 0 .771 3.40 12.15 2.089 .440 .563 2.87 .642 .026 1 6 sg104b 1924 1983 60 3 0 .829 3.37 11.23 2.082 .481 .557 2.73 .500 -.017 1 7 sg105a 1918 2002 85 4 0 .813 3.61 9.05 2.060 .541 .491 2.75 .463 -.028 1 8 sg105b 1907 2002 96 4 0 .757 3.02 8.21 1.785 .582 .466 2.77 .483 -.006 1 9 sg107a 1926 2002 77 3 0 .728 1.51 4.20 1.104 .453 .596 3.15 .620 -.006 1 10 sg107b 1926 2002 77 3 0 .769 1.17 4.52 .935 .327 .650 3.05 .511 -.021 1 11 sg108a 1970 2002 33 1 0 .544 1.11 4.50 .966 .503 .581 2.75 .620 .194 1 12 sg108b1 1918 1956 39 1 0 .581 1.05 2.73 .600 .406 .461 2.67 .524 .101 1 13 sg108b2 1967 1984 18 1 0 .630 2.03 3.79 .902 -.067 .494 2.63 .792 -.066 1 14 sg109a 1897 1951 55 3 0 .439 3.09 16.95 3.695 .931 .472 2.60 .591 -.016 1 15 sg109b 1904 1940 37 1 0 .654 1.64 4.17 .842 .162 .543 2.63 .616 .022 2 16 sg111a 1937 2002 66 3 0 .629 1.46 9.21 1.673 .693 .501 2.74 .567 -.029 2 17 sg111b 1932 2002 71 3 0 .628 1.68 12.57 2.142 .719 .631 2.75 .502 -.163 1 18 sg112a1 1914 1976 63 3 0 .584 5.16 17.59 3.102 .649 .361 2.85 .527 -.076 1 19 sg112a2 1990 2002 13 1 1 .435 2.85 5.47 1.651 .763 .313 2.69 .904 -.197 1 20 sg112b1 1920 1970 51 2 0 .607 4.13 9.91 2.475 .729 .388 2.63 .466 -.108 1 21 sg112b2 1990 2002 13 1 0 .696 2.43 5.60 1.295 .501 .365 2.69 .749 -.217 1 22 sg114a 1898 2002 105 5 0 .733 2.89 9.17 2.157 .684 .510 2.84 .565 .032 1 23 sg114b 1912 2002 91 4 0 .778 2.04 10.74 1.855 .535 .598 2.86 .478 -.046 1 24 sg115a 1903 2002 100 4 0 .769 2.91 8.43 1.641 .612 .376 2.97 .516 .018 1 25 sg115b 1913 1976 64 3 0 .738 3.85 10.27 1.819 .667 .332 2.69 .583 -.039 1 26 sg116a 1945 2002 58 3 0 .798 2.05 6.57 1.226 .679 .352 2.68 .486 .011 1 27 sg118c 1935 1972 38 1 0 .834 1.62 5.40 1.116 .580 .449 2.69 .580 -.030 1 28 sg130a 1929 1976 48 1 0 .638 1.94 4.31 .983 -.036 .550 2.83 .701 .061 1 29 sg131a1 1932 1976 45 1 0 .786 1.76 3.43 .865 .449 .429 2.70 .521 -.003 1 30 sg131a2 1990 2002 13 1 0 .621 .89 1.86 .458 -.053 .413 2.82 .767 .400 2 31 sg132a 1940 2002 63 3 0 .695 1.89 4.94 1.088 .348 .504 2.91 .685 .066 1 32 sg135a 1930 2002 73 3 0 .862 1.89 6.33 1.263 .301 .596 2.92 .551 -.028 1 33 sg135b 1952 2002 51 2 0 .749 2.00 6.66 1.300 .187 .557 3.04 .694 .070 1 34 sg137a1 1920 1966 47 1 0 .795 1.84 5.94 1.348 .260 .634 2.94 .697 .007 1 35 sg137a2 1990 2002 13 1 0 .760 1.71 4.49 1.069 -.101 .664 2.95 .764 .161 1 36 sg137b1 1919 1966 48 1 0 .773 2.86 8.86 2.048 .276 .556 3.02 .689 .051 1 37 sg137b2 1990 2002 13 1 0 .837 2.19 5.17 1.332 -.069 .581 2.97 .967 .208 2 38 sg138a1 1915 1940 26 1 0 .770 3.90 11.54 2.525 .568 .520 2.83 .722 .040 1 39 sg138a2 1960 1976 17 1 1 .320 1.85 5.27 1.454 .482 .597 2.72 .660 .082 1 40 sg138b 1915 1983 69 3 0 .731 3.64 12.89 2.944 .696 .578 2.75 .581 .003 1 41 sg141c 1872 2003 132 6 0 .469 3.90 14.83 2.806 .833 .292 2.83 .464 -.065 1 42 sg212b 1823 2003 181 8 0 .752 2.83 7.23 1.403 .695 .310 2.83 .390 .004 1 43 sg212c 1816 2003 188 8 0 .736 3.00 7.79 1.597 .807 .278 2.68 .505 -.047 1 --- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- -- Total or mean: 2728 115 2 .712 2.63 17.59 1.775 .564 .472 3.15 .546 -.004