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Gordon Gulch - Tree Growth & Physiology (2011-2012)

Tree Growth and Physiology Data for Gordon Gulch, Boulder Creek watershed

Variables:  Latitude, Longitude, Collection Date, Tree Diameter at Breast Height (DBH) (cm), Tree Ring Width (mm), Plot Name, Species, Foliar Nitrogen Content (%), Foliar delta13C (o/oo)

Standard Variables:  Carbon-13, stable isotope ratio delta|Nitrogen, organic|Latitude|Longitude|Species|Dendrology

Date Range:  (2011-01-01 to 2012-12-31)

Dataset Creators/Authors:  Hallie R. Adams; Holly R. Barnard; Alexander K. Loomis

Contact:  Holly R. Barnard,

Field Area:   Gordon Gulch

Keywords & XML
  • Description

    Lodgepole pine and ponderosa pine tree cores and foliage (years 2011, 2012) were collected throughout Gordon Gulch (upper and lower) in the Boulder Creek watershed.

    Tree core samples

    Tree cores were mounted, sanded, and measured according to standard dendrochronological procedures (Stokes and Smiley 1968). Ring widths were measured to nearest 0.01 mm using WinDENDRO software (Regent Instruments Inc., Quebec, Canada). All cores were visually crossdated using a master chronology developed from P. ponderosa of the central Front Range.

    Multiple tree cores were collected per sample plot (spatial resolution for tree coordinates is plot level).

    Tree core data date range: 1833-2013

    Foliage samples were collected from branches exposed to full sun in the upper 1/3 of the canopy. Samples were dried (35C for 50 hrs), ground, and extracted to holocellulose (Leavitt and Danzer 1993). Holocellulose samples were combusted in an elemental analyzer (Carlo Erba EA 1110 Series, Thermo Scientific, Waltham, MA) and analyzed by continuous flow mass spectrometry (VG/Fisons SIRA Series II mass spectrometer, Thermo Scientific, Waltham, MA) to determine the 13C isotope composition at the University of Colorado.

    Stable isotope abundance of d13C is expressed relative to the Pee Dee Belemnite standard (Farquhar et al. 1989): d^13 C(‰)=(R_sample/R_standard -1)×1000 where R is the ratio of 13C to 12C of the sample or standard. Precision of analysis was 0.12 ‰ and accuracy was 0.04 ‰.

    Foliar nitrogen was measured using a Thermo Finnigan FLASH EA 1112 Series CHN Analyzer at the University of Colorado.

    Tree Foliage Data Date Range: 2011-2012

    For additional methodology information, refer to Adams, H. R., H. R. Barnard, and A. K. Loomis. 2014. Topography alters tree growth - climate relationships in a semi-arid forested catchment. Ecosphere.
  • Keywords

    dendrochronology, tree ring, tree growth, water use efficiency, 13C stable isotopes, semi-arid, ecohydrology, lodgepole pine, pinus contorta, ponderosa pine, pinus ponderosa

    XML Metadata

    XML is in ISO-19115 geographic metadata format, compatible with ESRI Geoportal Server.

  • Citation for This Dataset

    These data were collected for and used in: Adams, H. R., H. R. Barnard, and A. K. Loomis. 2014. Topography alters tree growth - climate relationships in a semi-arid forested catchment. Ecosphere. Citations referred to in the methods include: Farquhar, G., K. Hubick, A. Condon, and R. Richards. 1989. Carbon isotope fraction and water-use efficiency. In: Stable isotopes in ecological research. Eds. P.W. Rundel, J.R. Ehleringer, and K.A. Nagy. Ecological Studies 68:525. Leavitt, S.W., and S. R. Danzer. 1993. Method for batch processing small wood samples to holocellulose for stable-carbon isotope analysis. Analytical Chemistry 65:87-89. Stokes, M. A., and T. L. Smiley. 1968. An introduction to tree-ring dating. University of Chicago Press, Chicago, IL.

    Citation for This Webpage

    Hallie R. Adams; Holly R. Barnard; Alexander K. Loomis (2012). "CZO Dataset: Gordon Gulch - Tree Growth & Physiology (2011-2012)." Retrieved 28 Feb 2020, from

  • Publications

    Primary Publications


    Topography alters tree growth–climate relationships in a semi-arid forested catchment. Adams H. R., Brnard H. R., and Loomis A. K. (2014): Ecosphere, Volume 5(11) v Article 148

    Other Publications


    Ecohydrological consequences of drought- and infestation- triggered tree die-off: insights and hypotheses. Adams H.D., Luce C.H., Breshears D.D., Allen C.D., Weiler M., Hale V.C., Smith A.M.S., and Huxman T.E. (2012): Ecohydrology 5: 145-159


    Nonstructural leaf carbohydrate dynamics of Pinus edulis during drought-induced tree mortality reveal role for carbon metabolism in mortality mechanism. Adams H.A., Germino M.J., Breshears D.D., Barron-Gafford G.A., Guardiola-Claramonte M., Zou C.B., and Huxman T.E. (2013): New Phytologist 197: 1142–1151

  • Acknowledgements


    Support for data was provided by the U.S. Department of Energy’s Terrestrial Ecosystem Science Program (DOE Award #: DE-SC0006968; PI: Holly DE-SC0006968


Gordon Gulch - Tree Growth Data

(.csv)   Data Level 0

Gordon Gulch - Tree Ring Width Data (yrs. 1833-2013)

(.csv)   Data Level 0

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