Interior Alaska Aspen Site SA1031, Alaska - AK178
Additional Site Information
M.Boyd L.Berner A.Foster S.Goetz B.Rogers X.Walker M.Mack
Reference:
Boyd, M.A., L.T. Berner, A.C. Foster, S.J. Goetz, B.M. Rogers, X.J. Walker, M.C. Mack. 2021.
Historic declines in growth portend trembling aspen death during a contemporary leaf miner outbreak in Alaska.
Ecosphere, Vol. 12, No. 6, e03569, June 2021. DOI: 10.1002/ecs2.3569
NOTES:
This data file contains raw ring-width chronologies of individual trees
that died (dying) and survived (living) an insect oubreak of Phyllocnistis
populiella (outbreak period: 1997 - 2013) in Interior Alaska.
Living trees have ring-width measurements up to 2015 and the tree names
are preceded by TA whereas dying tree ring-width measurements end in
1997-2013 and the tree names are preceded by TM.
Funding Sources:
NASA Terrestrial Ecology Program, Arctic Boreal and Vulnerability Experiment (ABoVE): NNX17AE44G
Strategic Environmental Research and Development Program (SERDP): RC18-C2-1183
Bonanza Creek LTER supported by the NSF: DEB-1636476
USDA Forest Service, Pacific Northwest Research Station: RJVA-PNW-01-JV-11261952-231
COFECHA output:
Chronology file name : AK178.CRN
Measurement file name : AK178.RWL
Date checked : 18DEC20
Checked by : B. Bauer
Beginning year : 1913
Ending year : 2015
Principal investigators: M.Boyd L.Berner A.Foster S.Goetz B.Rogers X.Walker M.Mack
Site name : Interior Alaska Aspen Site SA1031
Site location : Alaska
Species information : PPTR QUAKING ASPEN
Latitude : 6202
Longitude : -14525
Elevation : 116M
Series intercorrelation: 0.751
Avg mean sensitivity : 0.383
Avg standard deviation : 0.499
Avg autocorrelation : 0.701
Number dated series : 20
Segment length tested : 50
Number problem segments: 0
Pct problem segments : 0.00
PART 5: CORRELATION OF SERIES BY SEGMENTS: Interior Alaska Aspen Site SA1031 16:12 Fri 18 Dec 2020 Page 5
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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 1900 1925 1950 1975
1949 1974 1999 2024
--- -------- --------- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ----
1 TA991 1942 2015 .61 .59 .66
2 TA691 1929 2015 .87 .83 .76
3 TA391 1919 2015 .83 .88 .84 .84
4 TA291 1934 2015 .51 .75 .64
5 TA591 1923 2015 .85 .88 .85 .85
6 TA1091 1972 2015 .69
7 TA791 1919 2015 .89 .89 .86 .85
8 TA191 1937 2015 .83 .86 .83
9 TA491 1931 2015 .88 .82 .80
10 TA891 1936 2015 .78 .84 .80
11 TM1291 1930 2005 .45 .82 .81
12 TM191 1931 2002 .46 .76 .73
13 TM691 1919 2000 .77 .77 .73 .74
14 TM391 1913 2004 .89 .90 .81 .81
15 TM491 1930 2006 .84 .82 .72
16 TM791 1913 2004 .85 .87 .75 .71
17 TM891 1930 2007 .88 .88 .89
18 TM991 1930 2012 .81 .75 .70
19 TM1091 1931 2007 .60 .77 .77
20 TM291 1970 2013 .54
Av segment correlation .85 .76 .78 .77
PART 7: DESCRIPTIVE STATISTICS: Interior Alaska Aspen Site SA1031 16:12 Fri 18 Dec 2020 Page 8
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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 TA991 1942 2015 74 3 0 .618 .63 1.46 .338 .617 .408 2.59 .438 -.023 4
2 TA691 1929 2015 87 3 0 .825 .86 2.24 .488 .573 .423 2.56 .387 -.091 2
3 TA391 1919 2015 97 4 0 .826 .78 2.19 .495 .665 .362 2.50 .338 -.043 1
4 TA291 1934 2015 82 3 0 .522 .58 1.89 .409 .800 .393 2.65 .492 -.062 1
5 TA591 1923 2015 93 4 0 .833 .98 2.39 .461 .653 .324 2.42 .415 -.073 1
6 TA1091 1972 2015 44 1 0 .690 .83 1.51 .328 .343 .361 2.46 .454 .032 1
7 TA791 1919 2015 97 4 0 .871 .87 2.19 .498 .529 .459 2.57 .409 -.033 1
8 TA191 1937 2015 79 3 0 .819 .84 2.35 .509 .776 .415 2.49 .424 .009 1
9 TA491 1931 2015 85 3 0 .840 1.39 4.04 .676 .462 .415 2.65 .428 .012 2
10 TA891 1936 2015 80 3 0 .785 .89 2.09 .472 .675 .371 2.60 .537 -.056 1
11 TM1291 1930 2005 76 3 0 .550 .73 2.96 .713 .911 .391 2.61 .511 -.024 1
12 TM191 1931 2002 72 3 0 .516 .60 2.06 .575 .900 .407 2.57 .497 -.033 1
13 TM691 1919 2000 82 4 0 .736 .56 2.22 .502 .746 .363 2.53 .434 -.082 1
14 TM391 1913 2004 92 4 0 .845 .88 3.11 .703 .707 .444 2.42 .343 -.123 1
15 TM491 1930 2006 77 3 0 .800 .60 3.31 .593 .782 .412 2.51 .370 -.023 2
16 TM791 1913 2004 92 4 0 .796 .65 2.41 .420 .725 .315 2.38 .326 -.062 1
17 TM891 1930 2007 78 3 0 .879 .67 2.44 .423 .678 .382 2.56 .436 -.039 1
18 TM991 1930 2012 83 3 0 .809 .64 2.02 .518 .881 .335 2.42 .346 -.085 1
19 TM1091 1931 2007 77 3 0 .666 .89 1.87 .496 .824 .307 2.60 .572 .030 3
20 TM291 1970 2013 44 1 0 .537 .18 .42 .101 .696 .345 2.39 .399 -.138 1
--- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- --
Total or mean: 1591 62 0 .751 .77 4.04 .499 .701 .383 2.65 .424 -.046