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Holzkämper, Steffen; Tillman, Päivi Kaislahti; Kuhry, Peter; Esper, Jan (2012): (Table 1) Stable oxygen and carbon isotopic ratios of tree rings, and tree ring width of white spruce (Picea glauca), Ennadai Lake. PANGAEA, https://doi.org/10.1594/PANGAEA.811350, Supplement to: Holzkämper, S et al. (2012): Comparison of stable carbon and oxygen isotopes in Picea glauca tree rings and Sphagnum fuscum moss remains from subarctic Canada. Quaternary Research, 78(2), 295-302, https://doi.org/10.1016/j.yqres.2012.05.014

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Abstract:
Stable isotope ratios from tree rings and peatland mosses have become important proxies of past climate variations. We here compare recent stable carbon and oxygen isotope ratios in cellulose of tree rings from white spruce (Picea glauca), growing near the arctic tree line; and cellulose of Sphagnum fuscum stems, growing in a hummock of a subarctic peatland, in west-central Canada. Results show that carbon isotopes in S. fuscum correlate significantly with July temperatures over the past ~20 yr. The oxygen isotopes correlate with both summer temperature and precipitation. Analyses of the tree-ring isotopes revealed summer temperatures to be the main controlling factor for carbon isotope variations, whereas tree-ring oxygen isotope ratios are controlled by a combination of spring temperatures and precipitation totals. We also explore the potential of combining high-frequency (annual) climate signals derived from long tree-ring series with low-frequency (decadal to centennial) climate signals derived from the moss remains in peat deposits. This cross-archive comparison revealed no association between the oxygen isotopes, which likely results from the varying sensitivity of the archives to different seasons. For the carbon isotopes, common variance could be achieved through adjustments of the Sphagnum age model within dating error.
Coverage:
Latitude: 61.050000 * Longitude: -101.683000
Date/Time Start: 2005-07-01T00:00:00 * Date/Time End: 2005-07-01T00:00:00
Minimum Elevation: 350.0 m * Maximum Elevation: 350.0 m
Event(s):
Ennadai_shore * Latitude: 61.050000 * Longitude: -101.683000 * Date/Time: 2005-07-01T00:00:00 * Elevation: 350.0 m * Location: Ennadai Lake, Canada * Device: Tree ring sampling (TREE)
Comment:
Data extracted in the frame of a joint ICSTI/PANGAEA IPY effort, see http://doi.pangaea.de/10.1594/PANGAEA.150150
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethodComment
1Sample IDSample IDHolzkämper, Steffentree no.
2Picea glauca, d13C tree ringsP. glauca d13C TRper mil PDBHolzkämper, Steffenmean
3Picea glauca, d13C tree ringsP. glauca d13C TRper mil PDBHolzkämper, Steffenmin
4Picea glauca, d13C tree ringsP. glauca d13C TRper mil PDBHolzkämper, Steffenmax
5Picea glauca, standard deviationP. glauca std dev±Holzkämper, Steffend13C
6Picea glauca, d18O tree ringsP. glauca d18O TRper mil SMOWHolzkämper, Steffenmean
7Picea glauca, d18O tree ringsP. glauca d18O TRper mil SMOWHolzkämper, Steffenmin
8Picea glauca, d18O tree ringsP. glauca d18O TRper mil SMOWHolzkämper, Steffenmax
9Picea glauca, standard deviationP. glauca std dev±Holzkämper, Steffend18O
10Picea glauca, tree ring widthP. glauca TRWmmHolzkämper, Steffenmean
11Picea glauca, tree ring widthP. glauca TRWmmHolzkämper, Steffenmin
12Picea glauca, tree ring widthP. glauca TRWmmHolzkämper, Steffenmax
13Picea glauca, standard deviationP. glauca std dev±Holzkämper, SteffenTRW
Size:
39 data points

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