Drought indicated in carbon-13/carbon-12 ratios of southwestern tree rings

Steven Leavitt, Austin Long

Research output: Contribution to journalArticle

70 Citations (Scopus)

Abstract

Stomatal closure during periods of moisture deficiency should theoretically lead to elevated 13C/12C ratios as reduction of available CO2 leads to diminished photosynthetic discrimination against 13C in favor of 12C. Stable-carbon isotope ratio chronologies developed from 5-yr tree-ring groups at 17 sites in six southwestern states were tested for a drought relationship by first fitting a spline curve to each chronology to remove the long-term trend and calculating indices as the ratio of actual to spline curve value. The time series of 'Del Indices' so developed are significantly correlated with 5-yr mean Palmer Hydrological Drought Indices (post-1930 period). These Del Index drought reconstructions may provide a useful measure of past physiological response to drought (stomatal closure).

Original languageEnglish (US)
Pages (from-to)341-347
Number of pages7
JournalWater Resources Bulletin
Volume25
Issue number2
StatePublished - Apr 1989

Fingerprint

tree ring
drought
carbon isotope
carbon
chronology
carbon isotope ratio
physiological response
time series
stable isotope
reconstruction
discrimination
moisture
index
trend
Values
Group

ASJC Scopus subject areas

  • Environmental Science(all)
  • Water Science and Technology
  • Law

Cite this

Drought indicated in carbon-13/carbon-12 ratios of southwestern tree rings. / Leavitt, Steven; Long, Austin.

In: Water Resources Bulletin, Vol. 25, No. 2, 04.1989, p. 341-347.

Research output: Contribution to journalArticle

@article{d46b4c8c28284946acd9a4fdee96e08a,
title = "Drought indicated in carbon-13/carbon-12 ratios of southwestern tree rings",
abstract = "Stomatal closure during periods of moisture deficiency should theoretically lead to elevated 13C/12C ratios as reduction of available CO2 leads to diminished photosynthetic discrimination against 13C in favor of 12C. Stable-carbon isotope ratio chronologies developed from 5-yr tree-ring groups at 17 sites in six southwestern states were tested for a drought relationship by first fitting a spline curve to each chronology to remove the long-term trend and calculating indices as the ratio of actual to spline curve value. The time series of 'Del Indices' so developed are significantly correlated with 5-yr mean Palmer Hydrological Drought Indices (post-1930 period). These Del Index drought reconstructions may provide a useful measure of past physiological response to drought (stomatal closure).",
author = "Steven Leavitt and Austin Long",
year = "1989",
month = "4",
language = "English (US)",
volume = "25",
pages = "341--347",
journal = "Journal of the American Water Resources Association",
issn = "1093-474X",
publisher = "Wiley-Blackwell",
number = "2",

}

TY - JOUR

T1 - Drought indicated in carbon-13/carbon-12 ratios of southwestern tree rings

AU - Leavitt, Steven

AU - Long, Austin

PY - 1989/4

Y1 - 1989/4

N2 - Stomatal closure during periods of moisture deficiency should theoretically lead to elevated 13C/12C ratios as reduction of available CO2 leads to diminished photosynthetic discrimination against 13C in favor of 12C. Stable-carbon isotope ratio chronologies developed from 5-yr tree-ring groups at 17 sites in six southwestern states were tested for a drought relationship by first fitting a spline curve to each chronology to remove the long-term trend and calculating indices as the ratio of actual to spline curve value. The time series of 'Del Indices' so developed are significantly correlated with 5-yr mean Palmer Hydrological Drought Indices (post-1930 period). These Del Index drought reconstructions may provide a useful measure of past physiological response to drought (stomatal closure).

AB - Stomatal closure during periods of moisture deficiency should theoretically lead to elevated 13C/12C ratios as reduction of available CO2 leads to diminished photosynthetic discrimination against 13C in favor of 12C. Stable-carbon isotope ratio chronologies developed from 5-yr tree-ring groups at 17 sites in six southwestern states were tested for a drought relationship by first fitting a spline curve to each chronology to remove the long-term trend and calculating indices as the ratio of actual to spline curve value. The time series of 'Del Indices' so developed are significantly correlated with 5-yr mean Palmer Hydrological Drought Indices (post-1930 period). These Del Index drought reconstructions may provide a useful measure of past physiological response to drought (stomatal closure).

UR - http://www.scopus.com/inward/record.url?scp=0024648110&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0024648110&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0024648110

VL - 25

SP - 341

EP - 347

JO - Journal of the American Water Resources Association

JF - Journal of the American Water Resources Association

SN - 1093-474X

IS - 2

ER -