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

OVERVIEW

Description/Abstract

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

Creator/Author

Hallie R. Adams|Holly R. Barnard|Alexander K. Loomis

CZOs

Boulder

Contact

Holly R. Barnard, holly.barnard@colorado.edu

Subtitle

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

SUBJECTS

Disciplines

Biology / Ecology

Topics

Tree Growth & Physiology

Keywords

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

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)

Variables ODM2

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

TEMPORAL

Date Start

2011-01-01

Date End

2012-12-31

SPATIAL

Field Areas

Gordon Gulch

Location

Gordon Gulch

North latitude

40.02198037

South latitude

40.01271479

West longitude

-105.4731535

East longitude

-105.4684182

REFERENCE

Citation

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.

Publications of this data

Adams H. R., Brnard H. R., and Loomis A. K. (2014). Topography alters tree growth–climate relationships in a semi-arid forested catchment. Ecosphere, Volume 5(11) v Article 148 http://dx.doi.org/0.1890/ES14-00296.1

Publications using this data

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). Ecohydrological consequences of drought- and infestation- triggered tree die-off: insights and hypotheses. Ecohydrology 5: 145-159 http://dx.doi.org/10.1002/eco.233

Adams H.A., Germino M.J., Breshears D.D., Barron-Gafford G.A., Guardiola-Claramonte M., Zou C.B., and Huxman T.E. (2013). Nonstructural leaf carbohydrate dynamics of Pinus edulis during drought-induced tree mortality reveal role for carbon metabolism in mortality mechanism. New Phytologist 197: 1142–1151 http://dx.doi.org/10.1111/nph.12102

CZO ID

3888

Award Grant Numbers

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

COMMENTS

Comments

Methods:

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.